Lake Mead Low Water Levels, Part 2: Colorado River Inflow Variations and Trend

August 26th, 2022 by Roy W. Spencer, Ph. D.

Key Points

  • Contrary to claims that drought is causing Lake Mead water levels to fall, the Colorado River natural flows into Lake Mead show no long-term trend since 1930.
  • Decadal time scale variations in river flow do occur, though, related to the Pacific Decadal Oscillation (PDO).
  • Since about 2000, use of Lake Mead water has exceeded river inflow, causing water levels to drop. The negative phase of the PDO since that time has exacerbated the problem.

Natural Water Flows into Lake Mead: No Long-Term Trend

Record low water levels in Lake Mead are widely blamed on drought, although what “drought” means is seldom specified. The public perception is that lower precipitation amounts have reduced water supply to Lake Mead (which comes from the Colorado River), usually attributed to human-caused climate change, and that this is why water levels are falling.

But data from the U.S. Bureau of Reclamation (USBR) show that there has been no long-term trend in natural Colorado River flow into Lake Mead:

Fig. 1. Yearly “natural” water flows into Lake Mead, corrected for local human-induced changes in water flow upstream. Details of those corrections are described here. Data source here.

The flows in Fig. 1 have been slightly adjusted for local human-caused changes to the flows upstream, and provide our best answer to the question of whether long-term global climate change is responsible for a decrease of river water flow into Lake Mead.

The answer is “no”.

Does Climate Change Theory Even Predict Reduced Precipitation? No

The next question is, does climate change even predict future reductions of precipitation over the Colorado River watershed? The following plot shows an average of 183 climate model simulations of average yearly precipitation in an area approximating the Colorado River watershed. The models suggest a slight increase in total precipitation with warming.

Fig. 2. CMIP6 model average yearly precipitation 1930-2050 over an area approximating the upper Colorado River watershed. Data source here.

Most of the water entering Lake Mead is from snowmelt in the mountains; little of the water falling on lower elevations tends to be used by local vegetation with little runoff reaching the Colorado River. Fig. 3 shows there has been no long-term trend in the snowpack measurements in the upper Colorado River watershed.

Fig. 3. April snowpack measurements in the upper Colorado River watershed, 1938-2022.

So, not only has there been no observed long-term reduction in water flow into Lake Mead, or reduction in the watershed snowpack, climate change theory doesn’t even support such a change up to the current time (or even to 2050).

So, Why are Lake Mead Water Levels Falling?

What has changed since Hoover Dam was constructed in the 1930s is the amount of water being removed from Lake Mead. Since about 2000, that water use has exceeded the water input into the lake. This is the most recent available demonstration of that fact, published in 2012:

Fig. 4. The Colorado River basin water supply exceeded demand up until the year 2000 or so, and since then Lake Mead water levels have fallen due to overuse.

As long as water use exceeds supply, Lake Mead water levels will continue to fall. (This is somewhat dependent upon the regulated releases from Lake Powell, upstream. There is a “Fill Mead First” initiative that would draw down Lake Powell in an attempt to raise Lake Mead, based upon calculations that net natural water losses from combined evaporation and bank seepage from Mead and Powell would be reduced.)

The Role of the Pacific Decadal Oscillation (PDO) in the Current Problem

While the major problem with Lake Mead is overuse, there are multi-decadal fluctuations in Colorado River flows which have made matters worse since approximately 2000. If we take the river flow data in Fig. 1 and compute the accumulated departures from the long-term average flow (because this is how a reservoir like Lake Mead responds), we find that there have been periods of lesser and greater flows.

Fig. 5. As in Fig. 1, except time-accumulated departures-from-average Colorado River flows into Lake Mead.

Before the 1980s, there was somewhat reduced river flow into Lake Mead, but it made little difference because water use (Fig. 4) was still low.

Then from the 1982-83 super El Nino year to approximately 2000 there were above average flows, so Lake Mead could handle the increasing water usage. In fact, the lake reached near full-pool status.

But as usage peaked around 2000, river input to the lake was reduced once again. This put Lake Mead into an unsustainable state where more water was being extracted than the Colorado River could replenish it.

It has been long known (e.g. here) that precipitation in this region is affected by El Nino (more precip) and La Nina (less precip). Also, the Pacific Decadal Oscillation (PDO), which is basically a low-frequency manifestation of El Nino and La Nina activity is related to precipitation in this area.

I computed the cumulative average departures from the long-term mean of both the PDO index and the MEI (Multivariate ENSO Index). The PDO is somewhat higher correlated (r=0.52) with the cumulative river flow data in Fig. 5. As Fig. 6 shows, positive PDO periods are generally associated with higher stream flows, and negative PDO with lower stream flows. Most notably, the period since 2000 has seen more negative PDO activity, which is worsening the problem with Lake Mead not getting enough water. Of course, this will eventually reverse when the PDO flips back into its positive phase.

Fig. 6. Cumulative departures of the Pacific Decadal Oscillation index from its long term mean, which is r=0.52 correlated to cumulative streamflow into Lake Mead from the Colorado River (Fig. 5.)

Conclusions

The popular narrative that drought due to climate change is causing Lake Mead to have less water available to it is incorrect. Since 1930, there has been no long-term change in the Colorado River flow upstream of what is now Lake Mead.

The latest climate models do not even predict a reduction in precipitation in the upper Colorado River watershed.

Multi-decadal changes in river flow do occur, though, and are related to the Pacific Decadal Oscillation, a natural fluctuation in weather patterns over the northeast Pacific. Recent record-low water levels in Lake Mead are primarily due to record high water demand from the lake, since approximately 2000. The problem is being made somewhat worse by the negative phase of the PDO, also since approximately 2000.


235 Responses to “Lake Mead Low Water Levels, Part 2: Colorado River Inflow Variations and Trend”

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  1. dk_ says:

    Good article, thanks.

    At one time, Hoover was about flood control, water conservation, and electrical generation in that order. Lately, electrical power generation has superseded the other concerns.

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    • Charles KD says:

      The usual nonsense from fossil-fuel shills.

      Nobel Prize winner Stephan Lewandowsky DEMONSTRATES in his study:

      “NASA faked the moon landing–therefore, (climate) science is a hoax: an anatomy of the motivated rejection of science”.

      A must-read in every school in the world.

      • John Pinckney says:

        “The usual nonsense from fossil-fuel shills.” Hmm looks like factual data presented here. Of course a reservoir will loose volume if more is taken out then put in and visa versa. They actually measure river flow and reservoir out flow.

    • michael says:

      There is a glaring problem here. The last graph indicates a decreasing precipitation from 2000 due to a negative PDO. And yet, strangely the flows coming in have been stable(?) The factor that Roy seems to neglect is evaporation due to rising temperatures. Increased temperatures usually leads to greater need for water for both human consumption and agriculture https://insideclimatenews.org/news/09052018/california-climate-change-evidence-auto-emissions-standards-wildfires-heat-waves-water-drought-solar/

  2. stephen p. anderson says:

    Yes, the graph of Vegas population growth or casino occupancy versus Lake Mead level would be interesting to see.

    • Ric Werme says:

      Ditto agricultural use, and some of the water is piped to southern California.

      • dk_ says:

        Second on agricultural use, but that should have come under water conservation.
        Some of the upper Colorado watershed is also “shipped” (an aqueduct, pipeline, generating dam, and reservoir complex) to the Rio Grande valley. In the 70’s the problem at Mead was to do something with the excess outflow. Today, both are dry (or were dry before the start of about 45 days of quite normal monsoon), but with allocations much different from 50 years ago.

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      • Nabil Swedan says:

        Dr. Spencer,

        Your knowledge is outdated. You seem to forget that climate change is about deforestation and population growth “https://doi.org/10.1016/j.chnaes.2019.12.003” This has been the case since farming was invented. If water level in the lake is decreasing due to population growth or climate change it is immaterial because they are one and equal.

    • Andrew P says:

      Almost all of the water that goes down a drain in Las Vegas is treated and returned to Lake Mead. Almost all the water from showers, toilet flushes, dishwashing and such in hotels, businesses and residences is returned. The real issue for overuse is agriculture in AZ and SoCal.

  3. Nate says:

    Lees Ferry is below the Dam holding water in Lake Powell. It is primarily the human-controlled releases from the Dam that determine the water flow there into Lake Meade. During the years Lake Powell was being filled, the releases were lower.

    So not sure why you call it natural flows nor why it is a useful measure of natural.

    Here are the inflows to Lake Powell. They do seem to be reduced since ~ 2000.

    http://graphs.water-data.com/lakepowell/

    Select: Inflows (all time)

    • Nate: You can read the details of what “natural” water flows at Lees Ferry are, and what they represent.
      https://www.treeflow.info/content/lees-ferry-gaged-flow-record

    • Nate says:

      Ok so its calculated, based on assumptions and modeling.

      Meanwhile how do you account for the directly measured decreasing inflows to Lake Powell?

      The drought and warmth affects both supply and demand. Evaporation is included on demand side. The demand for irrigation is impacted by drought, which is undeniably happening.

      • Roy W Spencer says:

        Nate, I compared inflows to Lake Powell to those into Lake Mead. They are almost identical. Plus, the Upper Colorado River Basin snowpack also has no trend. You are trying too hard to support a narrative that has little to no evidence to support it.

      • Nate says:

        Almost identical.

        The average up to 1999 th inflow average was 11.67 M

        Since 2000: 8.52 M

        So 73 % of previous flow average.

      • dk_ says:

        Amazing, ain’t it, how much peaks differ from averages.

      • dk_ says:

        Comparing a short term average to a single peak is known as a false comparison. Doing it more than once is disengenuous.
        Starting from overall average to a subset is also a bait-and-switch.

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      • dk_ says:

        “Bloomberg’s journalists clearly do not understand the difference between natural weather oscillations and climate change. They compared the Sierra Nevadas heavy snowfall in 2019 with low snowfall in 2022 as evidence of a declining trend in snowfall.

        But they NEVER addressed the well-known effects of El Nino and the Pacific Decadal Oscillation that cause such variations. ”

        Jim Steele
        https://www.youtube.com/watch?v=g8udmYbXiOI
        transcript
        https://perhapsallnatural.blogspot.com/2022/08/science-of-snowfall-and-climate-snowjobs.html

      • Nate says:

        “Comparing a short term average to a single peak is known as a false comparison. Doing it more than once is disengenuous.”

        Nonsense. What ‘single peak’ are you talking about?

        “Starting from overall average to a subset is also a bait-and-switch.”

        Pffft…

        I’ve clearly stated what Ive done. Unlike Roy, I havent removed inconvenient portions of the data, such as the early 20th century rise.

        How bout applying your statistical skepticism equally to Roy’s analysis.

      • dk_ says:

        Inflow of water to Meade from before 1999 to since 2000 is as apples to oranges, and you know it. Two trend lines taken from adjacent parts of a data set will not match. You are taking advantage of this statistical fact to make a false point, and this is also deliberate.

        The Colorado watershed has been modified almost continuously for more than a century, since before the Boulder dam was completed. Inflow to Meade is controlled by other dams and reservoirs, including Glen Canyon / Powell, and inflow to all these is subject to diversion and use other than downstream, including urban, agricultural, and industrial use at higher altitudes, all uses that didn’t exist in 1936 when Boulder was complete, or even 20 years ago. Inflows are today modified by flood control and upland usage. Most of those control and limiting factors have been working at peak since before 1999.

        Mead wasn’t filled until 1944 or 45, but began producing electricity in 1936. It doesn’t need to be filled, just above dead pool state, to relese water.

        USGS and Bureau of Reclamation state that 85% of use is for agriculture, leaving the remainder for domestic and industrial purposes. ALL of water release/resource use is used for electrical production. The Colorado basin project is financed by electrical power sales, not by selling water.

        Outflows from the dams are paid to be greater than the inflows. Agricultural demand is not driving the last bit water usage, since it is for the most part needed at planting. Outflows exess to agriculture and other water demands evaporate or flow out to sea.

        “Political Science” climate alarmists agree with Dr. Spencer’s conclusion above, called oversubscription in [https://www.mdpi.com/2073-4441/14/1/2/htm#:~:text=The%20past%20three%20decades%20of,forward%20toward%20the%20finish%20line.] rather than overuse, but for this purpose meaning the same thing. The author of that November 2021 paper, while misattributing part of the forecast to a fictional megadrought without evidence, also makes well documented historical claims that the lake use has been oversubscribed since the program inception.

        Lake Mead and Powell outflows for the purpose of electical power generation have remained steady for the last several years, despite falling lake levels this year. Late 2021, Mead was at more than 45% capacity, as shown in publically available government figures I’ve already refenced (and which are easily found).

        In January 2022, had electrical generation/water usage been throttled (meaning responsibly conserved) to the available system water levels and predicted precipitation, there would be enough to get through the next couple months.

        If inflow was used to manage usage, then Hoover/Mead Glen Canyon/Powell would not have gotten close to drying out. Mead/Powell reservoir outflow was actually managed this way before 1999 and before slightly more recent overuse caused by closure and restriction of fuel and nuclear based power generation facilities without reduction of demand for power.

        A reservoir is supposed to store water and prevent flooding. These, and most U.S. hydro generation facilities, happen to be financed by the opposite purpose – to release water for electrical generation. Simply put, again, ad nauseum, inflow doesn’t matter when outflow is greater.

        The last months have been good, normal rainy seasons, colloquially “monsoons,” that have begun to fill Meade and Powell. The oncoming autumn and December-January rains, and winter snowfall, will likely complete to at least the same level as last December, around 45% MSL peak. It is a safe bet, since last year’s was a dismal monsoon and weak winter rains in the Southern, lower altitudes, but snow pack at higher altitudes was near average.

        Electrical generation was not slowed in the past month, even though Mead and Powell approached dead pool levels. If power generation/usage/outflow remains at the current level, and precipitation is not 20% (est) greater than last year, they’ll be dry again next August. There is no motivation for the Bureau of Reclamation, WAPA, or any of the political powers in play to reduce outflow. There will be even more reduction in traditional generation capacity, and no more (likely much less) than 10% increase in happy “green” non-fueled generation. Like every other government “budget,” the water resources of the Colorado, and throughout the U.S., will be overspent.

      • Nate says:

        “Inflow of water to Meade from before 1999 to since 2000 is as apples to oranges, and you know it.”

        No I dont know that. Nor have you made a reasoned argument.

        “Two trend lines taken from adjacent parts of a data set will not match.”

        I didnt draw any such trend lines, so you are very confused. I simply calculated MEANS. I see no problem with that.

        “You are taking advantage of this statistical fact to make a false point, and this is also deliberate.”

        There no statistical fact that you have found here.

      • Nate says:

        “Inflow to Meade is controlled by other dams and reservoirs, including Glen Canyon / Powell, and inflow to all these is subject to diversion and use other than downstream, including urban, agricultural, and industrial use at higher altitudes, all uses that didnt exist in 1936 when Boulder was complete, or even 20 years ago.”

        I posted Inflows to Lake Powell, not Meade.

        Roy posted ‘natural inflows’ to Meade which have been calculated at Lees Ferry.

        So you are confused.

      • Nate says:

        “Lake Mead and Powell outflows for the purpose of electical power generation have remained steady for the last several years, despite falling lake levels this year. ”

        https://www.8newsnow.com/news/local-news/hoover-dam-power-production-down-33-official-says/

        As expected, Hoover Dam power production is down 33%.

    • Nate says:

      Also, Im puzzled by your graph. The ‘natural flows’ calculated at Lees Ferry going back to 1906 are here.

      https://www.usbr.gov/lc/region/g4000/NaturalFlow/provisional.html

      The first document clearly shows that the current 22 year period is the lowest on record.

      Its flow was 12.27 Million. The 1906-2021 average is 14.7 M.

      So the Flow in the current period is 83% of average.

      • Nate says:

        “You are trying too hard to support a narrative that has little to no evidence to support it.”

        The whole system is human made for human use and destined to be unsustainable.

        But it seems you want to deny the obvious role that the enduring drought, that has much evidence to support it, plays in the current situation. It may not be happening in the high Rockies, but it is certainly happening in the entire lower basin.

        And the current drought and warmth affects evaporation losses, supply and demand.

      • stephen p. anderson says:

        How does drought affect supply and demand?

      • Swenson says:

        Stephen,

        I suppose if the drought continues severely enough for long enough, the river will cease to flow. End of supply. Demand will grow ever more strident, I guess.

        No doubt the cultists will claim that reducing the amount of CO2 in the atmosphere will cause the rain to fall again. Not too much, of course, floods can kill people, but just enough to end droughts, floods, sea level rise, sea level fall, coughs, colds, sore holes – and everything else.

        World peace will break out, there will a chicken in every pot, and free sunglasses will be provided to prevent eye damage from the dazzling brightness of eternal sunshine reflected off the gold-paved streets.

        Ah, one can only imagine the paradise to come – if only we listen to the words of the apostles of the sainted James Hansen!

        In the meantime, it looks as though quite a few innocents are condemned to starve while they freeze in the dark. Serves ’em right, wot?

      • Entropic man says:

        Swenson

        “Paradise”

        You forgot the promise of two women for every man and a faithful husband for a very woman.

      • stephen p. anderson says:

        I guess at some point drought will affect Rockies’ snowpack but still don’t get the demand part.

      • Nate says:

        Stephen,

        Drought affects demand because with dry conditions more irrigation is required.

        Warm dry air also results in more evaporation, which is oddly included on the demand side.

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  4. Ric Werme says:

    After Fig 2 you say:

    {Most of the water entering Lake Mead is from snowmelt in the mountains; little of the water falling on lower elevations tends to be used by local vegetation with little runoff reaching the Colorado River.}

    That first “little” sounds lost. Perhaps “_what_ little of the water falling….”

    ** OK – Roy

  5. Entropic man says:

    The full lake two decades ago represents decades of accumulated water capital.

    That capital is now being spent.

    The level has dropped by 150ft in 25 years, six feet per year.

    At that rate the remaining 100ft will be gone in sixteen years.

    I’m not much interested in arguing whether climate change has played a role in the decline.

    I’m much more interested in knowing what the Southwestern states and Mexico plan to do about it before levels become critical in 2038.

    It took eight years from Congressional approval to build the dam and another four years to fill the lake. This suggests that any solution needs to be at least in planning within four years.

    Having watched the US struggle to maintain its infrastructure, let alone improve it, I am not hopeful.

    ** The usual way to keep from running out of a scarce resource is to increase the price. -Roy

    • Norman says:

      Entropic man

      You make some very good points. If use would stay below average fill rate it is sustainable. The problem is that they are not. Making headlines and attributing it solely to “Climate Change” and ignoring the massive increase in use will not help the situation. A working plan needs to be developed rapidly to determine how to use water.

      Roy Spencer, I do like the research you did in creating these two blog posts. You point to the real problem and maybe you hope someone with authority and budgeting power does something before their is some massive issue like an extreme exodus of people from location trying to find homes and jobs in other areas.

  6. Entropic man says:

    ” ** The usual way to keep from running out of a scarce resource is to increase the price. -Roy”

    That raises two questions.

    How much are agriculture, industry and homes paying now?

    At what point do they shut down or move because water has become too expensive?

    • stephen p. anderson says:

      That’s kind of a silly question. At what point did taxpayers in NY and Michigan shut down and move to freer states when their states became too expensive? Every person or company has a different threshold.

      • Entropic man says:

        The Oklahoma Dust Bowl?

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  7. Terry says:

    Dr. Spencer,

    Nice article! I played a very small role in the 2012 study. My company and our partners were looking at ways to augment the Colorado River supply as it was clear back in 2010 there was a major supply crisis coming. As far as I can tell, nothing was done in response to the study recommendations. Seems they just pivoted to placing blame on climate change. As a resident of California, we have been placed on severe water restrictions, which are not acceptable as I think the solution is to develop more supply (i.e. desalination for one), a story for another day. I am sure you’ve seen the following document:
    https://wwa.colorado.edu/resources/colorado-river-resources/CRBreport#downloads
    I ask that you not publish my reply, I just wanted you to know my appreciation. I have exchanged emails with Dr. Christy on similar subjects recently. I only wish more of your materials made it into the public discourse.
    Thanks
    Terry

    • Denny says:

      I only wish more of your materials made it into the public discourse.

      I totally agree. Except, I would expand that to almost everything published about so called impacts from climate change. Wouldnt it be great to have a more dispassionate, scientific analysis of all the climate related stories in the media. Bring back critical thinking skills to our society. It might save us from the boneheaded disaster unfolding in Europe.

  8. Roy W Spencer says:

    EM – I have no idea.

  9. Ireneusz Palmowski says:

    With La Nina underway, fluctuations in the strength of the easterly wind (and solar wind) are evident, resulting in low temperatures in the Nino 4 region.
    https://www.tropicaltidbits.com/analysis/ocean/nino4.png

  10. Ireneusz Palmowski says:

    We have a strong monsoon in Asia, which is due to the circulation in the western Pacific.
    http://tropic.ssec.wisc.edu/real-time/mtpw2/product.php?color_type=tpw_nrl_colors&prod=global2&timespan=24hrs&anim=html5

  11. gbaikie says:

    A new devil of a problem for Planet Earth: vanishing humans
    By Glenn H. Reynolds
    –When I was a kid, everyone was worried about the population explosion. Paul Ehrlichs book, The Population Bomb, was a runaway bestseller.

    This led to a lot of dystopian science fiction, like Harry Harrisons novel, Make Room, Make Room, which became the famous movie Soylent Green. It also led to a lot of policy changes, from Chinas disastrous one-child policy to many policies in industrialized nations aimed at people having fewer children later in life.

    The culture also changed. My mother reports that when she was married, even married couples werent considered fully adult until they had children. Raising kids was seen as one of the most important things people did. Now, its seen as a distraction from the pleasures and opportunities of adult life, things like promotion at work or dating.–
    https://nypost.com/2022/08/26/a-new-devil-of-a-problem-for-planet-earth-vanishing-humans/

    It is problem for China and Japan.
    But it seems mostly a problem for China and it’s slave state North Korea.
    But due to my low opinion of governments in general, it could worst than we know due to Governments inability to simply count.
    Chinese govt simply does not want anyone to know what their population is. Because they are roughly speaking, batshit crazy.
    And with other governments it’s more issue is incompetent, lazy, and could be incentives say there are more people than there are.
    And US border controlled by a few criminal Cartels and we don’t have a clue of number of people entering or leaving. But I don’t think US is alone in unawareness of who coming or going in their nations.
    Or it seems there is no nation on this planet which is actually being governed by anything one could call professional people.

    Once upon a time, one might have hoped the CIA was gathering such intel. But it seems at this point we can toss that hope out the window.
    It could be that Chinese intel might have better clue- apparently they are extensively data mining and could have AI doing the counting.
    And unlike Twitter they might know such things as the number of real vs number of bots.

    And example of a question is how many fake identities are there in the world.
    Is less than 100 million. Or can be said, that whatever the number is, that it is roughly staying the same, or reducing. Or accelerating like crazy.
    Now, say this number is known, and is a secret, and any involved with any effort of estimation of populations are unaware of this secret number.
    Instead wondering, how about goggling.
    “Fraudsters hit a gold mine several years ago. They used complex data storage and virtualization machines to combine stolen personally identifiable information (PII) names, addresses, Social Security numbers (SSNs), birthdates and the like, plus fabricated data to create humans. They used these synthesized identities to automatically open bank accounts and shell companies and to monitor bank activity, patiently waiting for opportunities to cash in.”
    https://www.fraud-magazine.com/article.aspx?id=4295019499

    That might a serious problem, but not sure it’s of effect upon counting a nation’s population {though it may grow into it, in terms of affecting it].

    [[Well, I didn’t quickly find what I was looking for.]]

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  12. Thank you, angech, for your respond.
    Here is from
    Proof of the Atmospheric Greenhouse Effect
    Arthur P. Smith∗
    American Physical Society, 1 Research Road, Ridge NY, 11961
    ” A planet without an infrared absorbing atmosphere is mathematically constrained to have an average temperature
    less than or equal to the effective radiating temperature. Observed parameters for Earth prove that
    without infrared absorp-tion by the atmosphere, the average temperature of Earths surface would
    be at least 33 K lower than what is observed.?
    Link:
    https://arxiv.org/pdf/0802.4324.pdf

    And
    “So no matter the rotation rate, no matter the surface heat capacity, the average temperature of the planet in this
    rotating example, with only radiative energy flows and no absorbing layer in the atmosphere, is always less than the
    effective radiating temperature. For very slow rotation or low heat capacity it can be significantly less; for parameters
    in the other direction it can come as close as 1% (i.e. up to 252 K on a planet like Earth).”

    My comment is:
    Both Earth and Moon rotate very-very slowly to make any claim of uniform surface temperature distribution.
    Therefore, for Earth without atmosphere, according to Arthur P. Smith theory, we should be oriented close to the measured Moon’s mean surface temperature 220K, and not “up to 252 K ” as Arthur P. Smith claims.
    https://www.cristos-vournas.com

    • Bindidon says:

      A.P. Smith correctly writes:

      ” For very slow rotation or low heat capacity it can be significantly less … ”

      But Vournas writes

      ” Both Earth and Moon rotate very-very slowly … ”

      *
      Oh. How strange.

      It’s not so terribly long time ago that Vournas based his comparisons of Earth to Moon with the hint that Earth rotates a lot faster than Moon:

      ” These obvious discrepancies can be explained only by the Earths and by the Mars much faster than Moons rotational spins.

      These obvious discrepancies can be explained only by the Planet Surface Rotational Warming Phenomenon. ”

      *
      Thus

      – when Vournas needs support from the rotation speed difference between Earth and Moon, he of course uses it;

      but

      – when Vournas wants to deny the statement of somebody who mentions the effect of that same rotational difference, the difference suddenly disappears, pretty good hidden by a ‘rotate very-very slowly’.

      Hmmmh.

      • Thank you, Bindidon, for your respond!

        “Hmmmh.”

        “But Vournas writes

        Both Earth and Moon rotate very-very slowly

        And

        These obvious discrepancies can be explained only by the Earths and by the Mars much faster than Moons rotational spins.

        These obvious discrepancies can be explained only by the Planet Surface Rotational Warming Phenomenon.

        Well, let’s see
        A man walks approximately 5 km\h.
        A car rides about 120 km\h.

        A spacecraft moves 5000 km\h.

        So, man and car are very-very slow, compared to spacecraft.

        Both Earth and Moon rotate very-very slowly, when compared to a planet rotating so fast, so to having developed a uniform surface temperature…

        https://www.cristos-vournas.com

      • Entropic man says:

        Earth’s circumference is 40,000km. In 24 hours an object at the Equator travels 40,000km at an average velocity of 1600kph.

        Is that very-very slow?

      • Bindidon says:

        Now, Vournas, you become completely ridiculous.

        Communicating with a person writing such blah blah really makes few sense.

      • stephen p. anderson says:

        Christos,
        Best not to respond to these two nitwits.

      • gbaikie says:

        –A spacecraft moves 5000 km\h.–
        1.388888889 km/sec spacecraft is pretty slow
        It might stay in low orbit around Moon, but
        but not Mars

        It’s a suborbital trajectory for Earth or Mars.
        If you are far away from Earth on Mars, you are roughly going
        30 km/sec around the Sun or if away Mars about 24 km/sec around the sun.

      • A planet cannot have uniform surface temperature also because of its spherical shape.

        Both Earth and Moon rotate very-very slowly, when compared to a planet rotating so fast, so to having developed a uniform surface temperature

        https://www.cristos-vournas.com

      • Entropic man says:

        In fact local temperature depends not on rotation rate but on exposure time.

        Consider a subsolar point X on a planet with no atmosphere tidally locked to the Sun. It is continuously exposed to sunlight and will warm until

        incoming shortwave radiation = albedo plus outgoing longwave radiation.

        This is the maximum temperature the planet can achieve.

        The unlit side will cool until

        geothermal heat flow = outward longwave radiation.

        That is the minimum temperature the planet can achieve.

        Now start the planet rotating very-very slowly. If the rotation rate is slow enough our point X is exposed to the subsolar point and to darkness long enough to allow both temperatures to reach equilibrium the maximum and minimum should stay unchanged.

        Spin it faster and there is not enough exposure time to warm point X to the equilibrium maximum, or for it to cool to the equilibrium minimum.

        The temperature range for point X will decrease as rotation rate increases.

        Now for some real world examples.

        Mercury’s day is 176 Earth days. It’s temperature ranges from 700K down to 100K, a range of 600K. It is probably rotating slowly enough to reach equilibrium.

        The Moon’s day is 28 Earth days. The equatorial temperature ranges from 400K down to 140K. That is a range of 260K.
        That is clearly too short a day to reach equilibrium.

        Earth’s day is 24 hours. In the tropics The diurnal range is about 10C.

        To summarise.

        Mercury 176 days Temperature range 600K

        Moon 28 days range 260K.

        Earth 1 day range 10K.

        The Earth is rotating fast enough that there is nowhere enough time for temperatures to reach equilibrium and the temperature range is massively lower than the others. Earth has a fast rotation rate.

      • Earth one day range 10C.
        But Earth’s temperature differences at that the very same day are from -50C to +50C.

        Earth is by far not a uniform surface temperature planet!

        And no planet or moon is!

        https://www.cristos-vournas.com

      • Entropic man says:

        Note that the diurnal 10C range is for the tropics. I’m not comparing average temperatures for Mercury, the Moon and Earth. I’m comparing temperature ranges for equivalent points in the tropics. Averages are a different problem.

        Uniform temperature is a red herring. I doubt that a planet could rotate fast enough to have a uniform temperatures away from the poles.

      • “Uniform temperature is a red herring. I doubt that a planet could rotate fast enough to have a uniform temperatures away from the poles.”

        The planet blackbody effective temperature Te is a mathematical abstraction BASED ON THE UNIFORM SURFACE THE INCIDENT SOLAR FLUX DISTRIBUTION.
        It doesn’t have the right relation with physics phenomena determining the planet mean surface temperature.

        Therefore, the Earth’s Te = 255 K doesn’t exist!

        https://www.cristos-vournas.com

  13. Gary Hall says:

    Roy – also of note is How fast Lake Mead filled to capacity . .

    https://www.nps.gov/lake/learn/nature/images/average-elevation.jpg?maxwidth=1200&maxheight=1200&autorotate=false

    . . during a period of exceptional drought and heat waves.

    Also of note:

    Colorado River Basin drought 1901-2015
    https://journals.ametsoc.org/view/journals/eint/24/2/eiD200001.xml

    That’s Fig 3, from:

    https://journals.ametsoc.org/view/journals/eint/24/2/eiD200001.xml

    Great piece, Roy. LAT’s brings up the ACC fear-mongering re: Lake Powell and Mead most every week in their paper. This will come in very handy.

  14. AaronS says:

    So in summary, the ever increasing drawdown is sustainable during natural peak wet phases of PDO, but not during other dry to normal phases. What I find interesting is that the climate models predict opposite of what the mainstream climate catastrophe narrative claims. The models predict increases to precipitation for the water shed. If all this is true then it should be a illegal action by the ones spreading the narrative because the output of climate alarmist impact other aspects of the economy. It isn’t fair, there have to be consequences for lies. Personally I don’t buy the models but if we must accept then at least be consistent

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  16. Don B says:

    McCabe et al studied the drought patterns of the lower 48 during the last century and concluded that more than half of the drought patterns could be explained by the phases (cool or warm) of the PDO and the AMO (published in PNAS in 2004).

    Judith Curry, in a 2011 presentation at a NOAA workshop in Boulder, Colorado, presented the McCabe research, noted that the then (and now) cool PDO and warm AMO was the same situation as in 1946 – 1964 when the Southwestern US and the mountainous west was in drought, and predicted continued drought in those regions through about 2025.

    This is not to argue that increasing consumption of Lake Mead water is not important, but to suggest there is another factor, AMO, in the equation.

  17. Clint R says:

    We have the technology to solve water shortages. Just build desalination plants next to new nukes. Solve two problems at once.

    There are now about 21,000 desalination plants in operation around the globe. The biggest ones are in the United Arab Emirates, Saudi Arabia and Israel. The world’s largest desalination plant is located in Saudi Arabia (Ras Al-Khair Power and Desalination Plant) with a capacity of 1,401,000 cubic meters per day.

    We have the technology. We just need some adults in leadership positions.

    • Entropic man says:

      And LOTS of money!

      • gbaikie says:

        An important issue seem to me, does it give you tap water which as good as bottle water?

      • Clint R says:

        gbaikie, did you mean: An important issue seem[s] to me, does it give you tap water which [is] as good as bottle[d] water?

        If that’s close to what you meant, you should know that most bottled water is nothing more than tap water.

      • gbaikie says:

        My experience is that tap water can vary a lot in terms of how it tastes and smells. I have had tap water taste better than bottled water, but normally it isn’t.
        And it seems desalinated water could be worse than any tap water I have tasted. I don’t think ever tasted desalinated water, though it’s
        possible I have.
        I mean people can have soft water and hard water, would desalinated water be hard, soft, or neither?
        I would say all bottled I drink is neither.

      • gbaikie says:

        Well I looked around and some say desalinated needs to have minerals
        and it’s soft water.
        It’s muddle, but have this quote:
        “There are already some minerals being added to desalinated water. The desalination plants add calcium before the water is distributed to the national water carriers, because desalinated water is slightly acidic and corrosive to water pipes over time. Calcium helps combat the acidity, and is relatively inexpensive to add. Calcium, as a mineral, is also beneficial to humans and plants.”
        https://www.timesofisrael.com/deficiencies-in-desalinated-water-could-lead-to-increase-in-heart-attack-deaths/

      • gbaikie says:

        I don’t know if it’s true, some people say tap water is better to make coffee with. And I always make coffee from tap water. So I drink plenty of tap water.

      • Ken says:

        gbaikie … go to Quality Foods at Merecroft. You can buy a jug of water that has been passed through a reverse osmosis filter.

        That water would taste the same as water processed at a desalination plant.

  18. gbaikie says:

    NASA’s asteroid-deflecting test mission is just 1 month away from impact
    By Stefanie Waldek published 2 days ago
    https://www.space.com/nasa-dart-mission-asteroid-impact-one-month-away
    Linked: https://instapundit.com/

    “Although Dimorphos is not on a collision course with Earth, the mission is a test to see if “kinetic impact technology” would work to deflect any potential Earth-bound asteroids. ”

    “Didymos is the larger asteroid at 2,500 feet (780 meters) in diameter, while Dimorphos is the smaller “moonlet” asteroid at 525 feet (160 m) in diameter. For comparison, the asteroid that powerfully exploded over Chelyabinsk, Russia, in 2013 was 60 feet (18 m) in diameter.

    The choice of targeting a binary system was intentional. Because the two asteroids revolve around one another and they both can be observed by Earth-based telescopes we’ll quickly be able to see if the DART spacecraft’s impact shifted Dimorphos’ orbit.”

  19. gbaikie says:

    The Science of Snowfall and Climate Snowjobs
    https://wattsupwiththat.com/2022/08/27/the-science-of-snowfall-and-climate-snowjobs/

    All kinds of stuff about snow.

    Anyhow, I would say we living in Ice Age.

    Claiming no snow, means you are unaware that
    we are living in an Ice Age.
    And you probably failed on many other subjects in
    elementary school.

  20. Ireneusz Palmowski says:

    Autumn is approaching in the northern hemisphere. For many in Europe, it could be very cold.
    http://ocean.dmi.dk/arctic/plots/meanTarchive/meanT_2022.png

    • Milton Hathaway says:

      I find the human nature aspect of this story interesting. If there were no PDO, and otherwise less year-to-year variation in the inflows, then everyone would be focusing on the “Water Use” (red curve) in Fig 4. But complicate the picture with some variability in inflow, and that instead becomes the major focus. Independent of whether you are a “true-believer” or a “denier”, if a response is required, which curve in Fig 4 seems like a more realistic target, the red curve or the blue curve? Shades of “Everyone talks about the weather, but nobody ever does anything about it”.

      Throw in the PDO, and another interesting aspect of human nature arises, the boiling-frog behavior. The PDO (apparently) hides the problem for a while, then amplifies the problem for a while. During the periods of amplification, humans are more likely to be motivated to take some drastic action – the suggested nuclear-powered desalination plants, for example. It’s probably then easier to justify the ROI of such big actions, based on assuming the current trajectory of the problem will continue. It’s well known that humans have a much harder time planning for longer time scales.

      Since I’m all for maximum freedom, I’m with Dr. Spencer on the solution – let the price rise to the point that water usage drops to a sustainable level. In the town I live, water is on the spendy side $5 per kgal, due to local quirks in geography. Homeowners take one of three approaches: use drought-resistant grass and let it go brown in the dry season, landscape with rocks, or let the native vegetation take over. There is no law against having a year-round green lawn, but you don’t see any; the soil is very sandy, so a green lawn would mean a very big water bill. If certain agricultural uses are deemed to be important enough, they can be subsidized with a lower rate; maintaining some usage minimum rate is still important, though, to encourage best use and innovation.

      • Clint R says:

        Milton comments: “During the periods of amplification, humans are more likely to be motivated to take some drastic action — the suggested nuclear-powered desalination plants, for example.”

        That’s exactly what is being attempted with this AGW nonsense, Milton. Scare everyone to “drastic action” even though nothing is happening that is not manageable. Needed nukes and desalination plants are NOT “drastic action”. They will be sought after to support a growing population.

        New nuclear plants and desalination plants spur local economies. High paying jobs promote better standards of living. The more nuclear plants, the better, especially if you believe CO2 can “warm the planet”. It’s called a “win-win”.

      • Ireneusz Palmowski says:

        Poland is beginning to run out of gas. Fertilizer production is being halted, by the way, CO2 needed for cooling food products will start to run out. This is only a harbinger of Europe’s energy troubles. It is likely that frost will kill more people in Ukraine than war.

      • Ireneusz Palmowski says:

        There is also a shortage of coal in Poland. People stand in lines for days to buy inferior quality coal, which is not suitable for good stoves (it is heavily sulfated). If the EU does not suspend emission fees, many Polish pensioners will not be able to afford their energy payments.

      • Norman says:

        Clint R

        Your idea may be rational but it does not seem possible in California. They are trying to shut down their last Nuclear Power Plant even as demand, at times, exceeds supply. Not sure what can be done to help California.

        https://www.cnbc.com/2021/10/02/why-is-california-closing-diablo-canyon-nuclear-plant.html

      • Clint R says:

        Dang Norman, there’s not one insult or false accusation there! And, there’s no mention of your childish “bot” nonsense.

        You even touched on some reality.

        Are you finally over your year-long meltdown?

    • Bindidon says:

      Palmowski

      Don’t forget to show us this graph when we reach day 365!

      http://ocean.dmi.dk/arctic/plots/meanTarchive/meanT_2020.png

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  23. Ireneusz Palmowski says:

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  24. Bill Hunter says:

    Nate your comments are as usual not helpful. Your ignorance of Colorado River water policy appears to be completely absent.

    The Colorado River water is over allocated.

    One can measure inflows into a reservoir and mandated outflows and determine why a reservoir is dropping in level.

    But one must consider all factors that affect the inflow into each reservoir.

    Upper basin (above the Lake Powell dam) allocation use has increased several hundred thousand acre feet per year since 2000 was increasing since 1980 to 2000 at a similar rate. Wyoming and Colorado have been diverting increasing amounts of water over those times and have major plans to further increase that usage and have major projects in development to due just that. Throw in portions of Utah and New Mexico as well.

    On top of those managed diversions there is a huge unknown associated with unmanaged diversions such as pumping water out of water tables and management of natural water table replenishment.
    Those are certainly on the increase as well in step with growing populations.

    While we do know that negative PDO conditions are correlated with drought in California and very likely the entire southwest lesser water supplies can be expected from both that and human water use.

    Since we really have little idea of what causes these natural climate variations seemingly connected to water and wind current changes along with a recovery from the LIA we have no way of estimating the role of anthropogenic climate change and its effects.

    But what is the case is Colorado River water usage is over allocated and that isn’t any secret. Increasing water usage in the Colorado River basins have been defacto since the beginning of the 20th Century and politics has greatly affected water availability. Thus it is not at all surprising the reservoirs would reflect that wide and sudden variation. A wide and sudden variation that can only very partially be explained by a changing climate which itself needs to be divvied up among various causes.

    • Nate says:

      OK Bill,

      Ground water is worthwhile point. The rest, not so much.

      “defacto since the beginning of the 20th Century and politics has greatly affected water availability. Thus it is not at all surprising the reservoirs would reflect that wide and sudden variation.”

      A century ago is hardly sudden.

      • RLH says:

        Precipitation has not changed in a century.

      • Nate says:

        So drought conditions throughout the Southwest, since 2000, don’t matter and can be safely ignored?

      • RLH says:

        Only since 2000! Who was it that accused me of short termism?

        “The contiguous U.S. average annual precipitation was 30.28 inches, which is 0.34 inches above the long-term average, ranking in the middle third of the historical record.”

        Issued 12 January 2021:

      • Ken says:

        There is paleo data available showing that drought is a regular occurrence. Drought conditions in the SW since 2000 are not different from droughts before 2000 and are not an indicator that climate is changing. Ignore it or not; there is nothing you can do about it except to adapt.

      • Nate says:

        Yep, since 2000 is what this discussion is all about. You seem to have lost the thread.

      • Bill Hunter says:

        Nate says:

        Ground water is worthwhile point. The rest, not so much.

        ”defacto since the beginning of the 20th Century and politics has greatly affected water availability. Thus it is not at all surprising the reservoirs would reflect that wide and sudden variation.”

        A century ago is hardly sudden.
        ———————
        A century ago we were experiencing a large cool dip in global temperatures. Drought is well associated with cooler conditions. By your own statements about evaporation above you know that to be true. What goes up must come down.

        Where you went wrong is evaporation isn’t increasing as you claim. Its decreasing. Its decreasing because the amount of water surface area is decreasing. The water agencies are reporting that. Very slightly warmer weather might mitigate that some but over all it is believed that less water is being lost to evaporation. Loss of water due to percolation goes up as water tables are lowered.

        Anybody who spends even a little attention to water politics in California understands what the problem is and has understood it for generations. Nothing new going on here. The movie ‘Chinatown’ had water politics at the center of the plot in the early 20th Century. Politics still sets the tone. California in terms of sales value is the leading agricultural state. Far far far more politically acceptable to blame California’s water problems on anything but the real cause.

      • Bill Hunter says:

        Its more than just percolation Nate. Take the Grand Ditch in Colorado finished in 1936 that diverts water from the Colorado River watershed to the Missippi River watershed primarily because Denver is in the Mississippi River watershed.

        the point here is none of your arguments hold water. Precipitation is within normal ranges of variation for the region over the past 130 years for which data is available.

        Evaporation is not increasing its decreasing because water surface area is decreasing.

        Inflows into Lake Powell have varied but the reason they are historically low is Lake Powell is a young lake and was not there when natural multi-decadal climate change would have last effected it in the early 20th Century.

        Inflows into the Colorado River have been steady because of water politics. Yet the lake is down. That was the point of Roys Article which dependedly you jumped on instantly because it doesn’t fit your false narrative of climate change. And here you have have fallen flat on your face on every argument you have raised.

      • Nate says:

        Ok Bill, you’ve had your usual fun stalking me, confusing your opinions for facts, and tossing the usual toxic melange of nonsense, politics, and ad-hom grenades.

        Now kindly go and find someone else to stalk and troll.

      • Bill Hunter says:

        Sure Nate as soon as you stop lying and making up your own science.

  25. barry says:

    Curious about average temps in the region surrounding Lake Mead:

    Arizona

    https://tinyurl.com/ykyuman7

    Nevada

    https://tinyurl.com/4u8pesst

    Looks like the states surrounding the Lake have gotten warmer.
    Doesn’t mean they’ve gotten drier, as different places have different weather effects when the temp rises – which can also mean increased rainfall, longer breaks between downpours or shorter, reduced or (more likely) increased capacity of land to absorb/retain water (faster drying in warmer temps).

    The majority of the lake’s water comes from Colorado, Wyoming, and Utah. Let’s look at average temps over time.

    https://tinyurl.com/phw4uvsc
    https://tinyurl.com/bdemj8ab
    https://tinyurl.com/4a89efbv

    All warmer since 1900.

    Responding to a comment on how do we know there has been climate change in the region. Average temps seemed like a fair indicator.

    Click on the links and you can select certain months, seasons, states and other parameters including precipitation, heating degree days, and various drought indices.

    • RLH says:

      “Average temps seemed like a fair indicator.”

      So does precipitation which has not changed at all/worth a damn.

    • barry says:

      Yes, I’m not sure rainfall strongly competes with average temps to get a sense of general climate change.

      Did you also check the drought severity indices, which seem to be pertinent to the thrust of Roy’s article?

      • RLH says:

        Drought severity indices are heavily biased towards higher temperatures so what you are seeing is that increase reflected in the figures.

        Rainfall is what fills rivers/dams/lakes.

      • barry says:

        As I said, I was looking for evidence of climate change in the regions. Figuring out whether that has an impact on dam levels and water availability would require a lot more work. There are many factors to account for.

    • Nate says:

      Rainfall in West Climate Region

      https://www.ncei.noaa.gov/cag/regional/time-series/109/pcp/12/7/1895-2022?base_prd=true&begbaseyear=1895&endbaseyear=1999

      20th century Mean

      Mean 1895-1999 17.41 inches/year

      https://www.ncei.noaa.gov/cag/regional/time-series/109/pcp/12/7/1895-2022?base_prd=true&begbaseyear=2000&endbaseyear=2022

      Mean 2000-2022 15.83 inches/year

      Is a 9% drop for 22 y ‘worth a damn’?

      Then add extra warmth.

      • RLH says:

        But as you have admitted, the century long precipitation figures show little difference.

        You use those sort of long term trends for temperature continuously. Why is it not suitable for precipitation?

        Meiv2 shows that La Nina are becoming more frequent and deeper. Will that not affect the USA rainfall?

        https://climatedatablog.files.wordpress.com/2022/08/meiv2-2.jpeg

      • barry says:

        “You use those sort of long term trends for temperature continuously. Why is it not suitable for precipitation?”

        We also use shorter mutli-decadal trends to see if anything has changed more recently. According to the science, anthropogenic influence is limited to negligible in the first half of the 20th century, when CO2 increase rises slowly compared to the following decades, where it rises 4 times faster.

        1900 – 1960: 296 to 317 ppm = 0.35 ppm/yr (21 ppm over 60 years)
        1960 – 2020: 317 to 414 ppm = 1.62 ppm/yr (97 ppm over 60 years)

        The CO2 rise has accelerated throughout. From 2000 to 2020 the rate is 2.2 ppm/yr. As long as time-periods selected are not so short that noise swamps any signal, there’s no reason not to examine various multi-decadal periods.

      • RLH says:

        Your presumption is that the rise in CO2 causes increased temperatures (but no increase in precipitation).

        But only temperatures that are not El Nino apparently.

      • Nate says:

        Let it go RLH. That argument was over last month and not relevant.

      • RLH says:

        Why? You have not explained how ‘peak’ temperatures are not affected but everything else is.

      • Nate says:

        It has been explained, repeatedly. You simply ignore what others post.

      • Bill Hunter says:

        It does appear we have or are entering into a new multi-decadal regime that has a large effect on the southwest portion of the country in terms of precipitation.

        But if you look at 20 year precipitation patterns. 1920-39 was dryer than the generation 2000-1999. With 16.2″ vs 16.4″ respectively. So the current dry spell really can’t be considered anything unnatural or unexpected.

        The difference then was earlier in the century there was an identified need to store water for year round use and actual total use was far smaller.

        The fact that that water is currently not satisfying demand is quite simply related to population and agriculture and increasing demands for water. Absolutely zero evidence of anything else.

        Now that certainly doesn’t amount to a claim nothing else might have a factor in it all. Just from a science perspective nothing else exists.

      • Nate says:

        “But as you have admitted, the century long precipitation figures show little difference.”

        Gibberish.

        So, you think a 9% drop in precipitation for 22 y is not worth a damn to reservoirs in a region with extra warmth?

        “Meiv2 shows”

        Your recurring obsession has nothing to do with this topic.

      • RLH says:

        So the trend for more La Nina recently does not affect climate going forward. Why is that?

      • RLH says:

        And the rise in human (and agricultural) uses in the same time period is what? Nothing?

      • Bill Hunter says:

        Nate says:

        So, you think a 9% drop in precipitation for 22 y is not worth a damn to reservoirs in a region with extra warmth?
        ————-
        Nate a 9% drop in precipitation for 22 years isn’t even the record drop in a measly 127 year record! The last time there was such a drought larger than this drought was 1915 to 1936 where an average annual precipitation was 15.59 inches over a 22 year period.

        A lot of global warming was occurring at the same time then also. Can we conclude that the Colorado River watershed is likely the Canary in the coalmine for natural climate change? Seems to me that is the implication.

      • Nate says:

        Yep, periods of low rainfall, similar to the present one, are a recurring theme in the West.

        But as quantified by the Palmer Drought indices, recent warming turns the same level of precipitation into more severe Drought.

        https://www.ncei.noaa.gov/cag/regional/time-series/109/pdsi/1/7/1895-2022?base_prd=true&begbaseyear=2000&endbaseyear=2022

        The reason is clear: warmer temperatures lead to more drying of soil and vegetation, and more evaporation from bodies of water.

        The Drought indices are also a better predictor of forest fire risk.

      • Bill Hunter says:

        LMAO! Nate,

        The Palmer Severity Index includes estimates of impacts on agriculture, the population (residents), and industry.

        As we have been trying to tell you that official indices of drought is a moving target that becomes more severe the more you have agriculture, the larger the population, and as industry that uses water increases. The Palmer Drought Severity Index isn’t a climate index. It is an index of impacts on consumers of water.

        Roy’s article explains that fact. ‘Drought’ isn’t a climate measure. But instead it is combination of precipitation, runoff, storage, and needs/useage.

        So Roy was just pointing out that ‘drought’ is only loosely related to climate and to make his point he broke it down to lake inputs and lake levels to show the problem is NOT the input.

        That prompted some ignorant boob to start challenging Roy’s findings.

        LMAO! What was his argument? He claimed it was due to the input to Lake Powell!!! ROTFLMAO! You need to explain why you think that amounts to anything.

        Roy showed that Lake Mead has had a quite steady input mandated by policy.

        What has affected Lake Mead levels is increased output.

        More demand, more agriculture, more population, more industry, Mexico taking down its storage, and releases related due to lawsuits regarding the environmental impacts of the long term reduction of water reaching the Sea of Cortes.

        I mentioned the great movie ‘Chinatown’ because there the politicians were playing the same game. In Chinatown they wanted more water to develop the San Fernando Valley!!! Today they want to get rid of automobiles that use fossil fuels.

        I also pointed out that from the ‘environment/climate’ perspective there is a real lack of water in the entire Colorado water system, but that climatically speaking it isn’t remarkable or different than what the region has experienced in the past. Climate changes. It has always changed and will continue to change long after we are gone.

      • Nate says:

        “challenging Roys findings.”

        Speaking of LMAO, apparently your Daddies cannot be challenged!

        Meanwhile, unlike you, Roy fully expects that scientific analysis and conclusions he posts on his blog should be challenged.

        As he noted in an earlier post last month:

        “In the meantime, I will be inviting the researchers who live and breathe this stuff to poke holes in my analysis.”

      • Nate says:

        What a croc, Bill. Where do you get these notions?

        “challenging Roys findings.”

        Speaking of LMAO, apparently your Daddies cannot be challenged!

        Meanwhile, unlike you, Roy fully expects that scientific analysis and conclusions he posts on his blog will be challenged.

        As he noted in an earlier post last month:

        “In the meantime, I will be inviting the researchers who live and breathe this stuff to poke holes in my analysis.”

      • Nate says:

        “As we have been trying to tell you that official indices of drought is a moving target that becomes more severe the more you have agriculture, the larger the population, and as industry that uses water increases.”

        Unfortunately Bill, we have all learned that your many posts like this have zero credibility.

        No matter what data or facts are shown to you, you invent some new nonsensical BS excuse.

        “The Palmer drought index, sometimes called the Palmer drought severity index (PDSI), is a regional drought index commonly used for monitoring drought events and studying areal extent and severity of drought episodes.”

        “The Palmer index is widely used operationally, with Palmer maps published weekly by the United States Government’s National Oceanic and Atmospheric Administration. It also has been used by climatologists to standardize global long-term drought analysis. Global Palmer data sets have been developed based on instrumental records beginning in the 19th century.[5] In addition, dendrochronology has been used to generate estimated Palmer index values for North America for the past 2000 years, allowing analysis of long term drought trends.[6] It has also been used as a means of explaining the Late Bronze Age collapse.”

      • Bill Hunter says:

        Nate the Palmer Drought Severity Index has several weaknesses. It is used because it is the most useful available for alerting policy makers for necessary action.

        But the PDSI isn’t comparible from region to region.

        For many of the exact same reasons, its also not comparible within a region that has undergone large hydrological changes such as the southwest. Lower water tables, massive increases in reservoir surface area creates huge changes for some of the variables in the index and thus while the PDSI is useful for recent change (and would be far more accurate if the historical comparison was to a more recent period where total agriculture, total population, and water storage facilities had not undergone orders of magnitude of change.

      • Nate says:

        Shocking, yet more backsliding from unsubstantiated Bill assertions.

        You cannot document any real problem with the PDSI. It is simply measuring the meteorological drought conditions.

        The index clearly shows the current period is one of deeper drought conditions than any other time in the record.

        Nothing you asserted there supports your silly dismissal of the data “LMAO! Nate”, nor that the current unprecedented drought conditions can be ignored.

      • Bill Hunter says:

        Its well documented Nate. Any credible scientist recognizes this there is no scientist denying it. The PDSI was developed in Kansas a region without the complexities and changes the southwest has undergone.

        It is explicitly stated its not comparible across regions. That makes it not compariable across regions with vast hydrological changes. How is soil moisture measured in the southwest, a region where the only place it existed 100 years ago was in the riparian bufferzone. Agriculture didn’t even hardly exist. It has always been accomplished via impounded water.

        Nearly all those bufferzones are now under 100’s of feet of reservoir water. Water flow is strictly controlled throughout the basin. When is the last time you heard about a Colorado River flood, something that was an annual occurrence a century ago during late spring months.

        I lived in areas where farms exist without any irrigation other than mother nature. In this zone unless you plant right along the river bank within probably a 100 feet, your agriculture is dependent upon impounded water. How can you possibly compare 100 years ago?

        Evaporations? Gee that went through the roof when the impounded the reservoirs. A slim little river is going to give you a fraction of the evaporation. Evaporation and percolation water losses are the biggest concerns regarding water loss during a drought. Not even compariable at all to 1895 when most of the dams on feeder creeks were beaver dams.

        You completely blew it when you claimed evaporation was up due to a warmer climate when the actual case is evaporation is down both due to water surfaces diminishing since the middle of the century due to water levels going down due to precipitation. . . .and pan evaporation is also down due to less sun light reaching the surface. Percolation is up due to lower water tables due mostly to new agriculture and isn’t comparible over a 100 year period of time pre development.

        Sorry but you are going to have to come up with some specific arguments to convince me that drought in the southwest has anything at all to do with anything but changes in precipitation. . . .and we know for a fact that is within the normal range over the last 100 years.

    • stephen p. anderson says:

      Those are adjusted temperatures.

      • Entropic man says:

        If you prefer we can use the raw temperature day and the faster warming rate they show.

        Much of the pre-WW2 raw data underestimated the actual temperatures.

        http://cdn.arstechnica.net/wp-content/uploads/2016/01/noaa_world_rawadj_annual.png

      • Bill Hunter says:

        Of course it did EM!

        They were trying to eliminate the 1911 to 1944 climate change that climate models couldn’t reproduce!

        Circular science is the order of the day. There was a need to put a leash on science that anoints the words from above. Instead of a science Czar or Pope, its accomplished with billions$ pumped into institutions so it can be done via a disciplined ”College of Cardinals”.

      • Bill Hunter says:

        Actually we were better off having science done by private enterprise as private enterprise pays a huge price when found out. Not so with the untouchables where there is no cost for lies unless they are politically incorrect lies.

      • Entropic man says:

        Silly Billy.

      • Bill Hunter says:

        EM is against accountability. . . .at least he is when it favors his point of view.

      • Entropic man says:

        Exxon employed scientists to study global warming. They told their bosses what the needed to know.

        The bosses didn’t like what they heard so they paid other scientists to tell them what they wanted to hear.

        The problem with company scientists is that ultimately the man who pays the piper calls the tune.

        Think of all the scientists funded via front organisations like the Heartland Instute.

        You know them, the scientists paid to tell you that leaded petrol is safe, that tobacco is good for you and that climate change is not a problem. Who are they accountable to?

      • Clint R says:

        Ent, how much were you paid to claim passenger jets fly backwards?

        Or are you just a braindead cult idiot for free, while posing as an anonymous troll?

      • Bill Hunter says:

        Entropic man says:

        Exxon employed scientists to study global warming. They told their bosses what the needed to know.

        The bosses didnt like what they heard so they paid other scientists to tell them what they wanted to hear.

        The problem with company scientists is that ultimately the man who pays the piper calls the tune.

        Think of all the scientists funded via front organisations like the Heartland Instute.

        You know them, the scientists paid to tell you that leaded petrol is safe, that tobacco is good for you and that climate change is not a problem. Who are they accountable to?
        ——————

        I didn’t say they were perfect EM. They just don’t all belong to the same corrupt organization so alternative information is certainly always available.

        Further you apparently don’t understand the role of science. Science can’t prove ‘no harm’ so one should be suspect immediately of any scientist that made any such claim: ”that leaded petrol is safe, that tobacco is good for you and that climate change is not a problem”. The role of science (and auditors) is to inspect the evidence and determine if there is harm.

        So far that hasn’t been done for climate change and for leaded gasoline and tobacco harm can arise from excessive use. Fact is you can excessively drink water to your detriment also and it isn’t that hard to do. Actually all you have to do is listen to doctors that tell you to drink a minimum of 8 glasses a day and follow their advice to a ‘T’. Certainly your mileage will change from individual to individual but so does ones tolerance to other substances. As to water one has to consider how much water one is actually losing. Are you working hard in hot weather and sweating like crazy? In that case 8 might not be enough. If you aren’t working hard, aren’t hot, and not sweating its quite likely that 8 glasses of water will do nothing but drain your body of salts and other electrolytes and harm your health that way.

        Bottom line is you should drink water when your body tells you too and not what some doctor tells you too without having a darned good additional reason why.

      • barry says:

        Research that countered the ‘science’ paid for by tobacco companies was undertaken under government and non-profit auspices.

        The tobacco industry never corrected course, they were made to comply with the science by governments.

        The tired old meme that the market prevents corporate corruption is as hollow as always. On the contrary, government regulation is the primary safeguard.

        None of it is perfect, of course.

      • Bill Hunter says:

        barry says:
        Research that countered the science paid for by tobacco companies was undertaken under government and non-profit auspices.

        The tobacco industry never corrected course, they were made to comply with the science by governments.
        ————————-
        I suppose you actually believe what you wrote there. Its wrong and its wrong for the same reason that people continued to smoke after 1953 when the science came out that smoking was bad for you. Namely folks want to believe what they want to believe.

        And of course that research you speak of didn’t counter any science coming from the tobacco companies. They hadn’t done any science.

        Now the tobacco companies did continue to use marketing to sell their products and they sought out scientists with different points of view as to the causes of cancer. Perhaps maybe there was even a case of subsequent taint regarding those other opinions. But I am not aware of any wide spread abuse such as that.

        And yes you are correct that both government labs and private, public, and quasi-public corporations did the science that established the dangers of smoking. Note many were private.

        But you should know I have frequently stated my position on this matter as to conflicts of interest.

        When money is involved there is a lack of independence unless that money is coming from you to a professional provider who owes you a legal duty. Your lawyer, your accountant, your engineer, your doctor, your plumber etc. pretty much without exception owes you a duty. A duty if violated you can sue them for damages and more.

        Institutions receiving billions from governments are not independent any more than a tobacco company. Their money might come from you directly or indirectly but they don’t owe you squat as to a duty. If you think thats not true then you must have just fallen off the turnip truck.

        And the problem isn’t that the institution or corporation has billions. Its the process of allocating the money thats at issue.

        The money needs allocating in an independent manner. Instead over the past 3/4’s of century ‘expert’ committees made up of employees of the very institutions that are going to get the money makes the determinations of who gets what. So if you don’t toe the line you will be out to lunch.

        And I am not speaking of any grand conspiracy here. Its nothing different in scale or shape from individual tobacco companies running their own advertising campaigns.

        Too much is made of fake science. Science is manipulable because of its inherent uncertainty regarding any science built on statistics. And by manipulable I mean that its not pure science but opinion masquerading as science. Auditors are trained to detect that. We all have statistical training. We know how statistics can be abused to favor what one wants to favor.

        Sure if you have uniform widgets, statistics does a great job. When it doesn’t then that opens the door for opinion.

        And today most science is based on statistics and it is chock full of opinion and often far far less science.

        And you seem to want to make a big deal about tobacco companies being forced to comply with science. Doesn’t seem that way to me.

        Seems what we did was pass a lot of laws making smoking illegal depending upon where you are. Oh yes we required warning labels on packs of cigarettes. But the labels really didn’t do hardly anything.

        —————————–
        —————————–
        —————————–
        —————————–

        barry says:

        The tired old meme that the market prevents corporate corruption is as hollow as always. On the contrary, government regulation is the primary safeguard.

        None of it is perfect, of course.
        ———————-

        Indeed so.

        I have spent the last 25 years writing regulations and promoting them. And 15 years before that aiding in compliance of regulations via private auditor reports, which is a significant objective of private audits.

        there is nothing harder to write than a good regulation. All regulations have unintended consequences. Many regulations are unnecessary and even more are completely ineffective. But they all have unintended consequences.

        Of course ones opinion about that might vary some. A lot has to do whether what you are enthused about the exercise of power and/or are a proselytizer or if your primary objective is to promote good at the least cost.

        Regarding the market. You are quite wrong. Cigarettes are not illegal thus just about everybody who quit did for a reason other than regulation. the vape market (the most successful), the nicotine patch market and other aids did more than any regulation did.

        IMO, regulation is only necessary to protect others and of course children. And it seems to me most of that regulation went well overboard. Its gotten pretty ridiculous. The market does fine in regulating most things that alternatives exist for. Its biggest success story is being written right now. And I am talking about ‘certified’ goods. the market here enables a bare minimum of regulation. the regulation is still difficult as the biggest risk of regulation is conglomeration and conglomeration threatens competition. You like regulation? You think its the primary answer? Well then you are right in bed with the largest of corporations if you do. the bigger the corporations get the more stifling and less effective the regulations become and everything moves a whole lot slower and costs a lot more. But hey man some people get rich off that!!!

      • barry says:

        “I suppose you actually believe what you wrote there. Its wrong and its wrong for the same reason that people continued to smoke after 1953 when the science came out that smoking was bad for you. Namely folks want to believe what they want to believe.”

        That’s a completely different argument to the one I replied to.

        “And of course that research you speak of didnt counter any science coming from the tobacco companies. They hadn’t done any science.”

        You may not have noticed I put tobacco company ‘science’ in quotes.

        You implied the corporate world does better than governments at protecting the public from corporation. The clear counter-example of the tobacco industry is typical.

        Whether or not people heed medical advice is quite beside the point you made that I replied to. This:

        “Actually we were better off having science done by private enterprise as private enterprise pays a huge price when found out.”

        Companies generally only act when it is in their financial interests. That is the absolute core value of private enterprise. That’s why we have government regulations.

        If people ‘believe what they want to believe’, where is the ‘pressure’ for companies to do the right thing?

        “When money is involved there is a lack of independence unless that money is coming from you to a professional provider who owes you a legal duty.”

        That legal duty is enforced by government.

        “Oh yes we required warning labels on packs of cigarettes. But the labels really didn’t do hardly anything.”

        Australia’s aggressive strategy saw a significant reduction in the number of per capita smokers. While smoking was in decline throughout the 20th century, there was a steeper drop-off from the late 1980s, coinciding with increasingly dire warnings on packets, higher taxes–>prices, and government regs about where to smoke.

        https://www.tobaccoinaustralia.org.au/chapter-1-prevalence/1-3-prevalence-of-smoking-adults
        https://www.tobaccoinaustralia.org.au/chapter-12-tobacco-products/attachment-12-1-health-warnings/12a-1-history-health-warnings

        Particularly interesting is the reversal of a trend in more women smoking, which reversed in the 1980s.

        The increasing regulations were, of course, met every step of the way by strenuous opposition from the tobacco industry.

        Perhaps the biggest change to come from government regs is social attitudes towards smoking. I can tell you from experience. I smoked for 27 years.

      • Bindidon says:

        ” They were trying to eliminate the 1911 to 1944 climate change that climate models couldnt reproduce! ”

        Where is the proof for that claim?

        Who is ‘They’ ?

        Sounds like the typical paranoid, pseudoskeptic message.

      • Bill Hunter says:

        Bindidon says:
        ” They were trying to eliminate the 1911 to 1944 climate change that climate models couldnt reproduce! ”

        Where is the proof for that claim?

        Who is They ?
        ————————
        Bindidon you can play the guy that just fell off the turnip truck if you want. Fine by me.

        ‘they’ ARE the folks who had control of the money, funded the work, and found it a pressing need to go back and tell weather station managers from a 100 years ago they were stupid.

        And when did they do it? When skeptics were pointing out the models could not replicate the 1911 to 1944 rise in temperatures?

        And when did the weather station managers stop being stupid? 1944? LMAO! My how convenient!

        Looks to me to be a good topic to have a Congressional Investigation around on the integrity of public servants.

      • Bill Hunter says:

        barry says:
        ”You implied the corporate world does better than governments at protecting the public from corporation. The clear counter-example of the tobacco industry is typical.”
        ————————–
        Uh actually yes!

        But you have to take that with a grain of salt. You acknowledge that not-for-profits (technically mostly private universities) had a role in bringing science forward on the matter. Harvard University is a private corporation.

        Even most public institutions like UCLA are quasi-private a lot like the post office is quasi-private. they have a large amount of independence and their funding is mostly derived from non-government sources.

        What I object to is the expansion of government control over our education system via a large plethora of mechanisms. Your example of tobacco science is really the example of how it should work as there was no huge government involvement in it prior to when the science truly became mature. Most of the research was non-government mandated either directly or indirectly.

        Of course when I say the corporate model is better I don’t mean that we should depend on each corporation doing all the science with regards to its own impacts on public health.

        I am saying that anytime you have central control at any level on any topic the door swings wide open for corruption. What matters is power! With power comes corruption. The IPCC by its shear scale is one of the most corrupt organizations on the planet.

        When I mention a corporate model its a decentralized model.

        The proper and best science model is decentralized and protected from the influence of power from any powerful entity. Its a model of a ”free market of ideas” and not bought off by centralized power.

        Sure there is individual corruption but unless you are some kind of believer in grand conspiracies decentralized power by definition is a lack of corruption because power and corruption goes hand in hand.

        So what do you want? You want a system by where taxes are low, thus power is low. Where funds from taxes go primarily toward warding off threats arising from powers outside of the jurisdiction of government. . . .such as national disaster and combined disaster response.

        You want to emphasize education? Well rather than collecting taxes and divvying them up via non-independent commissions, committees, blue ribbon task forces, or international panels.

        Give tax exemptions for college education. Funds from the government is best managed by an independent civil service rather than the self serving panels and commissions mentioned above.

        We have to be careful as Eisenhower warned. The lesson of the MIC was well learned by others who seek power. And it seems much less so by the general population.

        Like the 1953 science on smoking that was sufficient to have educated those who paid attention, that didn’t arise from anything even remotely like the IPCC model the general population didn’t pay a lot of attention to it. And that includes both me and you.

        So what do we want to do about that? Send out a bunch of thugs to rip the cigarettes out of our mouths? Create monumental government industrial and institutional complexes? As Forrest Gump’s mother said: Stupid is what stupid does.

        Your example of smoking science arose from a far better institutional model than what we have today.

        You are actually dissatisfied with the smoking science model probably because you chose to ignore it. So why use it as support for a stupid model?

      • barry says:

        Bill,

        British research of the tobacco industry was done under the auspices of the NIH. I guess government grants didn’t corrupt the research?

        The point is – the tobacco companies fought the science. Private enterprise actively worked against the health of their customers. No surprise – the science went against their marketing.

        We’ve seen what happens without regulations. The profit motive is like water – it seeps into any crack available. This isn’t socialist ideology, it’s the nature of the beast. I’ve worked in the corporate sector. This is not controversial, it’s the bread and butter of a competitive market.

        Corruption is not some sole province of government, it is across all society. Best you can do is put mechanisms in place to reduce it. This includes oversight and competition. For the market, oversight is done by government and consumers, and the competition is other players and consumer choices. For government it is independent watchdogs and elections.

        A mixed economy seems like the best answer currently, a balance of capitalism and government regulation.

        “The IPCC by its shear scale is one of the most corrupt organizations on the planet.”

        1) How large is the IPCC?

        2) What is its structure?

        3) How does this lead to it being “one of the most corrupt organizations on the planet?”

        No idea what you mean by being dissatisfied by the “tobacco science model.” My point was that you cannot trust private enterprise to provide honest health and safety (and quality) assessments of their products, and that we need more oversight than consumer choices. The history on that is quite clear.

      • barry says:

        I’d also like to see some link or something for the claim about model deficits for early 20th century. Where does this come from?

      • Nate says:

        “The proper and best science model is decentralized and protected from the influence of power from any powerful entity. Its a model of a ‘free market of ideas’ and not bought off by centralized power.”

        That is certainly how most science is accomplished these days.

        It is mistake to to portray the IPCC as the director or funder of science. It isn’t.

        All the science in the IPCC reports is carried out by multiple independent researchers, who are often competitors.

      • Bill Hunter says:

        barry says:

        ”British research of the tobacco industry was done under the auspices of the NIH. I guess government grants didnt corrupt the research?

        The point is the tobacco companies fought the science. Private enterprise actively worked against the health of their customers. No surprise the science went against their marketing.”
        ————————–
        Of course they did. Good science arises out of a healthy debate among experts.

        The fact there was a debate should be sufficient warning to users. So I suppose you blame your own addiction on the tobacco companies and favored their arguments over those that arose from neutral sources. Right?
        ——————————-
        ——————————-
        ——————————-
        ——————————-
        ——————————-
        ——————————-

        barry says:

        ”Weve seen what happens without regulations.”
        ————————-
        Erecting strawmen doesn’t help your argument. I clearly said some regulation was necessary and that I am involved in creating hopefully smart regulation.
        ——————————-
        ——————————-
        ——————————-
        ——————————-
        ——————————-
        ——————————-

        barry says:

        Corruption is not some sole province of government, it is across all society. Best you can do is put mechanisms in place to reduce it. This includes oversight and competition. For the market, oversight is done by government and consumers, and the competition is other players and consumer choices. For government it is independent watchdogs and elections.
        ———————–
        You think there is disagreement on that? Did we elect Dr. Fauci? Nope! Should persons paid by corporations be the ones deciding what science gets done? Nope! But thats what we have got!!! And as you point out correctly corruption rules from every perspective. Thus you need processes whereby if Congress delegates its authority it is only to persons who are independent regarding the decisions they make. As you do agree that is a huge problem.

        ——————————-
        ——————————-
        ——————————-
        ——————————-
        ——————————-
        ——————————-

        barry says:

        ”How does this lead to it being one of the most corrupt organizations on the planet?”
        ———————-
        An independent review was made of the IPCC by an expert and neutral group. They wrote them up on several problems. However, the IPCC rejected the recommendations that Head Authors be independent. There you have it! The most primary control of corruption openly and transparently rejected! Thats some kutzpah!
        ——————————-
        ——————————-
        ——————————-
        ——————————-
        ——————————-
        ——————————-

        barry says:

        No idea what you mean by being dissatisfied by the ”tobacco science model.”

        My point was that you cannot trust private enterprise to provide honest health and safety (and quality) assessments of their products, and that we need more oversight than consumer choices. The history on that is quite clear.
        ———————–
        Yet you condone putting private enterprise people on panels that provide public reports and dole out public dollars for research?

        You think you are not aware of it, yet you are, and haven’t connected the dots yet.

        What we have today is decidedly not what we had a half century ago.

      • Bill Hunter says:

        barry says:

        ”Id also like to see some link or something for the claim about model deficits for early 20th century. Where does this come from?”

        Your questions seems to be out of place in this subthread. But if you are referring to the inability of the models to reproduce the early 20th century warming. . . .that is very well known. There was a significant warming event that occurred from 1911 to 1944. However, since the main guy that funds climate science, Kevin Trenberth, declared the instruments must be wrong subsequently was answered by funding requests for reviewing the station manager entries which resulted in some but not all of the temperature bump. Made to order science. . . .why wouldn’t you expect that when the main funder guy declared it must be true before the work was even started. LMAO!

      • Nate says:

        “An independent review was made of the IPCC by an expert and neutral group. They wrote them up on several problems.”

        Yep the IAC report.

        https://www.google.com/url?sa=t&source=web&rct=j&url=https://archive.ipcc.ch/pdf/IAC_report/IAC%2520Report.pdf&ved=2ahUKEwjZ6LiXtPf5AhXCFmIAHazfA8wQFnoECCIQAQ&usg=AOvVaw2j6rqjH3XmvEi-t79bHahs

        They did not seem to agree with your assessment that the IPCC ” is one of the most corrupt organizations on the planet.”

        On the contrary, they simply suggested improvements.

      • Bill Hunter says:

        They were being polite Nate.

        The finding was promoting ones own work rather than what the mission of the IPCC was.

        For a CPA that would be a career ending violation.

        But thats just where the corruption starts. Political editing of the final documents is even worse. The summary for policy makers is edited by policy makers to provide false scientific cover for policy makers to select outcomes.

  26. Jessica Rich says:

    this

  27. Ireneusz Palmowski says:

    Average number of sunspots very stable.
    https://i.ibb.co/0fbJNBR/EISNcurrent-1.png

  28. Ireneusz Palmowski says:

    European Commission President Ursula von der Leyen on Tuesday rejected the Polish government’s demand for a temporary suspension of the EU Emissions Trading System (EU ETS). Such a move would have helped stop energy price hikes. – We need the ETS to reduce carbon emissions, von der Leyen announced in Copenhagen.

    Ursula von der Leyen said that it is “CO2 that causes climate change. – We know how catastrophic the impact of climate change is. We only need to look at this summer’s drought,” the European Commission president reasoned.

    • Clint R says:

      “…the European Commission president reasoned”

      Unfortunately, there is NO “reasoning”. EVERYTHING they see is “proof” that “carbon emissions” are causing climate change. Drought, flooding, cold waves, hot waves, clouds, clear skies, fall, winter, spring, summer — all due to “carbon emissions”!

      That’s what “braindead” looks like.

  29. Norman says:

    Clint R

    Did you take a rational pill? Your posts are actually sounding valid. Your point is my major complaint with Climate reporting. Every extreme weather event is tied to climate change (a noted rise of global temperature the last 100 years) but no science explanations are given. Europe had a drought why is that climate change and not some annual variation in precipitation? Cliff Mass does the science and has the knowledge to do so and he finds no justification to continually link weather extremes to “climate change” what is lacking is any attempt to find underlying mechanisms that would demonstrate climate change. The currentethod relies on waiting for some extreme event and then running millions of simulations on super computers and finding a statistical probability that a given event was climate change. Not the best scientific process. Like randomly throwing darts at a board and seeing if they land in the climate change spot.

    • Fred M. Cain says:

      Norman,

      I believe your comments are spot on. The extreme weather events of the last couple of years and “global warming” are an association, not cause-and-effect. They have never proven cause and effect nor are they likely too.

      Sadly, the American public does not understand the difference between “climate” and “weather” and our wonderful news media is getting them even more confused on the issue.

  30. Ireneusz Palmowski says:

    Who knows when the ongoing La Nina and climate “anomalies” will end?
    https://www.tropicaltidbits.com/analysis/ocean/nino4.png

  31. Brett says:

    Thank you for your research.
    Quite honestly it’s about time that somebody published the true story of what is happening.in the West. Most articlesabout this subject are telling the story of the megadrought and not the facts of overuse. The story that is unfolding in front of us is a true representation of how our society and our culture blame something other than themselves. We won’t become successful if we keep pointing the finger. Bottom line, there too many straws in the Big Gulp.

  32. DUANE MORISON says:

    For the people like us your blogs helps to get ideal information and knowledge. Thanks for providing such blogs. https://www.usajacket.com/category/movie-merchandise/halloween-kills-outfit/

  33. Fred M. Cain says:

    Dear Professor Roy,

    Thank you so much for these most interesting posts on Lake Mead. What you are telling us here is what Id already suspected: Since the population of the West has simply exploded, the demand for water is outstripping the carrying capacity of the watersheds in the West. It’s just that simple; is it not? These watersheds can provide sufficient water for the population during wet years, but we simply cannot count on a wet year every year, nor should we.

    What about the 20-year drought since the year 2000 that, according to some “scientists”, is “the worst in 1,200 years”? How did “scientists” manage to come up with that figure?

    Sometimes I wonder if there even is a 20-year drought. It all depends on how you look at it. Looking at 20-year averages for Arizona, yes, I can see that precipitation over the last 20 years has been below normal at least in Arizona. But not every year during that time frame had below normal precipitation. Some years were above average.

    Furthermore, the year 2020 in Arizona was the driest in the States history. That’s not exactly unprecedented since records only go back to the mid 1890s. There were actually a couple of years in the 1950s that were almost as dry.

    If we were to treat 2020 as somewhat of an anomaly, average precipitation since the year 2K is even closer to normal. So, is there really a 20-year drought? Maybe. It all depends on how we look at the figures.

    I am a strong believer in the old statistical law of “reversion to the mean”. After a series of dry years there will probably a series of wet years. Actually, it would only take a couple of wet years to boost the 20- or 25-year average back to above normal.

    When the wet years come with their accompanying heavy snowfall and flooding, I predict that the news media will point their fingers directly at “climate change”. Right.

    As one reader wrote in to a Tucson daily, when it doesn’t rain, that’s due to climate change. But then when it does rain, that’s due to climate change as well.

    Regards,
    Fred M. Cain,
    Topeka, IN

  34. aaron says:

    Check out the bizarre title of this paper showing a large increase in water stored on land. Something is wrong in climate science.

    Talk about burying the lede!

    More water is being stored on land. “Land water storage trends, summed over all basins, are positive for GRACE (∼7182 km3/y) but negative for models (−450 to −12 km3/y), contributing opposing trends to global mean sea level change.”

    https://www.pnas.org/doi/full/10.1073/pnas.1704665115