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What Happened to a Climate Change Denier's 10-Year Wager? 96

Slashdot reader Layzej writes: In January of 2011, Slashdot reported on AccuWeather meteorologist Joe Bastardi's wager for climate scientists. He bet the earth would "cool .1 to .2 Celsius in the next ten years, according to objective satellite data." He later backed down when the wager was accepted, saying "With the way the article is couched, which I did not know would turn into a bet, I think that if I am wrong, then I will not have the 10k to bet anyway...since it seems that 35 years of forecasting is now on the line with this. I have never bet on the weather before, and I think since it now appears I am betting my entire livelihood on this, then that is enough."

It's a good thing too. The wager would have come due in January of 2021. As it turns out, the linear trend of global mean temperatures shows the earth actually warmed by just over 0.5C over the period according to satellite data.
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What Happened to a Climate Change Denier's 10-Year Wager?

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  • by Ostracus ( 1354233 ) on Saturday March 27, 2021 @02:49PM (#61205984) Journal

    I'm sure a farmer could have told him the weather is a poor thing to bet on.

    • by Layzej ( 1976930 ) on Saturday March 27, 2021 @02:55PM (#61205998)
      "Don't bet against physics." is also good advice.
        • by Layzej ( 1976930 )

          Paywalled. You can look at figure 2 here [carbonbrief.org] to see how Hanson's 1980 projections held up: https://www.carbonbrief.org/an... [carbonbrief.org].

          Long story short, he overestimated rate of CO2 increase, but underestimated the impact of rising CO2, and came out with something about right. So, right answer but for the wrong reason. We learn from it nonetheless.

          Of course, these are projections and not predictions. We get to decide how much CO2 we will emit. The models can only say "if we do this, we should expect that." We

    • Yes? He made that point himself?

    • I'm sure a farmer could have told him the weather is a poor thing to bet on.

      He was betting on the climate not the weather [noaa.gov]. He may now be trying to pass it off as a bet on the weather but if he was betting on the global average temperature over 10 years that's most definitely climate.

      • by ceoyoyo ( 59147 )

        From reading the things he's said, I'm not sure he really understands the difference.

        His arguments mostly seem to boil down to "weather is complicated" and "CO2 is only present in tiny amounts."

    • As long as you are a major US corporate farmer, there's little risk to such a bet. [taxpayer.net]
  • by ceoyoyo ( 59147 )

    “The scientific approach is you see the other argument, you put forward predictions about where things are going to go, and you test them,” he says. “That is what I have done. I have said the earth will cool .1 to .2 Celsius in the next ten years, according to objective satellite data.”

    Well, guesses aren't really the scientific approach, but if you generously call that a hypothesis then I guess it's been rejected. Sounds like he's now going to claim it's all just chance.

  • by BytePusher ( 209961 ) on Saturday March 27, 2021 @03:05PM (#61206030) Homepage
    His whole life savings is $10k? I'm sure he got more than that from the fossil fuel industry...
  • 0.5 C? (Score:5, Interesting)

    by Qwertie ( 797303 ) on Saturday March 27, 2021 @03:27PM (#61206080) Homepage

    As someone who has followed this topic closely, this number is much higher than I would expect to see . You can see on this NOAA chart [noaa.gov] that the global average temperature of 2011-20 is only about 0.2 C higher than 2001-2010.

    Maybe a best-fit linear trend of RSS data shows 0.5 C warming in the last decade, but trend estimation on such a short time period is excessively influenced by large year-to-year variations. Also, any "climate skeptic" will have no trouble dismissing RSS data - they prefer UAH, a different interpretation of the same satellite data that has been prepared by contrarian scientists Roy Spencer and John Christy.

    Since humans live on land, I do think it's worth nothing that global warming on land is much faster than on the ocean [twimg.com] but since oceans cover 71% of the Earth, the ocean signal is weighted much higher.

    • Re: (Score:3, Insightful)

      by Anonymous Coward

      it takes more energy to heat ocean than land. That energy translates into changes in ocean currents and alters the course or periodic weather systems.

    • by Layzej ( 1976930 )

      As someone who has followed this topic closely, this number is much higher than I would expect to see . You can see on this NOAA chart [noaa.gov] that the global average temperature of 2011-20 is only about 0.2 C higher than 2001-2010. Maybe a best-fit linear trend of RSS data shows 0.5 C warming in the last decade, but trend estimation on such a short time period is excessively influenced by large year-to-year variations.

      Fair point. Either way, his prediction was the right order of magnitude, but in the wrong direction.

      • No... you don't get to claim that you're partially right when you give the wrong answer and it happens to contain one of the same digits as the correct answer. That's not how it works.

    • by Layzej ( 1976930 )

      any "climate skeptic" will have no trouble dismissing RSS data - they prefer UAH, a different interpretation of the same satellite data that has been prepared by contrarian scientists Roy Spencer and John Christy.

      They show roughly the same change over the period. 0.505 for UAH, and 0.518 for RSS. - https://woodfortrees.org/data/... [woodfortrees.org]

      • by caseih ( 160668 )

        Maybe I'm reading it wrong, but the link you provided seems to show a mean of 0.139312 for UAH, and 0.579366 for RSS. I'm not sure if that's degrees per year. As for you numbers, they appear to come from the the mean squares slope, which for UAH is 0.0504865 per year and RSS is 0.0517871 per year but I don't think that's the same thing as degree per year, and somehow your numbers are off by an order of magnitude.

        • by Layzej ( 1976930 )

          Mean doesn't have any meaning in this context since we're talking about anomalies and not absolutes. It's the slope you want to look at:

          RSS= #Least squares trend line; slope = 0.0517871 per year

          UAH= #Least squares trend line; slope = 0.0504865 per year

        • Something to keep in mind is that the climate models being discussed are air temperature at the surface, while the RSS and UAH analyses of satellite data look at measurements of radiance temperatures averaged over 0 to 12 km.

          (I'll also note that both of these are microwave radiance measurements. There are also infrared satellite temperature measurements, which somehow don't get discussed since they're not controversial).

          The Wikipedia article has a good overview explanation of satellite temperature measurem

    • by gtall ( 79522 )

      You can look at stats or you can look at Greenland. Greenland is melting. I'm guessing it isn't getting cooler up there.

      • Greenland is melting. I'm guessing it isn't getting cooler up there.

        Well according to this chart, it was in fact getting cooler [tradingeconomics.com] over the last ten years in Greenland before 2015... and I can't find anything year-wise since then, just a lot of articles about ice sheet melting (which is based a lot of warmer oceans) but very little actual climate data since then. Hmm!

        From the report that we had, we see the maximum lows were a little warmer, but the maximum highs are a bit cooler. But what I can't find, is if

        • Greenland is melting. I'm guessing it isn't getting cooler up there.

          Well according to this chart, it was in fact getting cooler [tradingeconomics.com] over the last ten years in Greenland before 2015... .

          I'm not sure that "tradingeconomics.com" is a site I'd go to first for science data, but I went to the link and about all I can see is that the annual variation is so high that it's hard to see the trend.

          The person you're responding to, however, talked about Greenland melting. Turns out that the gravity measurement satellites (primarily GRACE and GRACE-Follow on) can measure the total mass of ice on Greenland pretty well.

          The answer is, yes, Greenland is melting.

          2002-2020 data article here: https://svs.gsfc. [nasa.gov]

    • Going from the averages of "2001-2010" to "2011-2020" is a difference between data points separated by ten years, not twenty. It makes sense that the 20-year difference from 2001 to 2021 would be at least twice the magnitude (turns out to be more because it's accelerating).

  • He backed down from the bet, the bastardi.

  • by thegarbz ( 1787294 ) on Saturday March 27, 2021 @04:55PM (#61206298)

    I'm still waiting for Mcafee to eat his own dick on national television.

  • If a meteorologist is not willing to bet on his expert opinion, that tells you something. It would be like a civil engineer building a bridge and saying "I'm not willing to bet anything that the bridge will not fall apart in the next 5 years".

  • Hold the press! Someone almost made a bet, and now we learned he would have lost! This has nothing to do with putting up another headline about global warming, it's about the bet. If it were an article about global warming the title would have been, "The earth has warmed .5 degrees in ten years". The bet, that's the thing.
  • I'm so happy things are warming up. Let's keep it going!

  • Bursting bubbles (Score:3, Interesting)

    by theendlessnow ( 516149 ) * on Saturday March 27, 2021 @11:40PM (#61207206)
    Climate "scientists" were telling us in college in the 80's that the polar ice caps would melt by the year 2000 and with help, could last as long as 2020 (but no later than that). And that the coastline of Texas would go through downtown Houston in 2020.

    Not a wager. It was presented as fact.

    History's sword slices both ways.
    • Re:Bursting bubbles (Score:5, Interesting)

      by Uberbah ( 647458 ) on Sunday March 28, 2021 @01:56AM (#61207458)

      Uh huh. Kinda like how climate change denialists insist scientists were warning about a new ice age in the 70's - except that didn't happen either.

    • by amorsen ( 7485 )

      You had climate scientists as teachers in college?

      Wow.

    • by ceoyoyo ( 59147 )

      Says something about the college you went to, tbh. Or maybe how well you paid attention in class.

      Here are some assessments of how old climate models actually did. tl;dr: pretty well.

      https://www.carbonbrief.org/an... [carbonbrief.org]

    • Climate "scientists" were telling us in college in the 80's that the polar ice caps would melt by the year 2000

      No, they weren't. We know what climate scientists were telling us in the 1980s. We have records. In the 1980s they were predicting "4 to 17 centimeters" of sea level rise by 2020.

      Yes, that's a very large set of error bars. That's how you can tell real science from popular bullshit: real science has error bars.

      Ref: https://books.google.com/books... [google.com]

      • by Layzej ( 1976930 )

        I think that reads 4 to 17 centimeters by 2000, not 2020. It looks like we tracked towards the low end of that projection: https://www.climate.gov/news-f... [climate.gov]

        IPCC AR1 projected SLR 8.7 to 28.9 cm between 1985 and 2030 (see chart on page 20: https://www.ipcc.ch/site/asset... [www.ipcc.ch] ). We're at ~10 cm with 10 years left on the clock, but it seems we'll come up short of the best estimate of 18.3 cm

        I suppose that's how science advances. Assumptions can be reviewed and refined and better projections developed.

  • Follow the link to the actual data and you’ll see only 2 samples. Was one sample from summer and the other from winter? What does the data from an 11 year span show? As an engineer with many years of experience analyzing data, and as somebody who believes CO2 is warming the planet, it gives me no pleasure to point out that as presented this data doesn’t tell us anything useful.
    • The two "samples" are actually just the start and end of the least squares trend line. The least spares trend line is calculated from 120 monthly global mean temperature measurements. Here's the full dataset: https://woodfortrees.org/plot/... [woodfortrees.org] .

      Click "raw data" at the bottom to get at the data.

    • God Bless You.

      Plot all of the data. The point of me suggesting that someone plot the data is multipurpose. It isn't just to get them to look at the actual data. It is to get them to look at all of the data and to start asking questions about the data they find. I did a heat map of the planet from 1750 to the present. It was for a website called FreeCodeCamp. I followed the instructions and learned how to use D3.js. It was useful.

      I have downloaded and plotted ALL of the data. Anyone who has knows about 1750.

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