“The decadal land-surface average temperature using a 10-year moving average of surface temperatures over land. Anomalies are relative to the Jan 1950 – December 1979 mean. The grey band indicates 95% statistical and spatial uncertainty interval.” A Koch-funded reanalysis of 1.6 billion temperature reports finds that “essentially all of this increase is due to the human emission of greenhouse gases.”
The Berkeley Earth Surface Temperature Study (BEST) is poised to release its findings next week on the cause of recent global warming. A forthcoming NY Times op-ed by Richard Muller, BEST’s Founder and Scientific Director, has been excerpted on a conservative website with the headline, “New Global Temperature Data Reanalysis Confirms Warming, Blames CO2.”
I have spoken with scientists and journalists familiar with BEST’s findings, and the excerpt appears genuine. Here is the money graf:
CALL me a converted skeptic. Three years ago I identified scientific issues that, in my mind, threw doubt on the very existence of global warming. Now, after organizing an intensive research effort involving a dozen scientists, I’ve concluded that global warming is real, that the prior estimates of the rate were correct, and that cause is human.
Yes, yes, I know, the finding itself is “dog bites man.” What makes this “man bites dog” is thatMuller has been a skeptic of climate science, and the single biggest funder of this study is the “Charles G. Koch Charitable Foundation ($150,000).” The Kochs are the leading funder of climate disinformation in the world!
It gets better:
Our results show that the average temperature of the Earth’s land has risen by two and a half degrees Fahrenheit over the past 250 years, and one and a half degrees Fahrenheit over the most recent 50 years. Moreover, it appears likely that essentially all of this increase is due to the human emission of greenhouse gases.These findings are stronger than those of the Intergovernmental Panel on Climate Change, the United Nations group that defines the scientific and diplomatic consensus on global warming.
In short, a Koch-funded study has found that the IPCC “consensus” underestimated both the rate of surface warming and how much could be attributed to human emissions!
Here is some background on BEST followed by a longer excerpt of the op-ed.
A group of scientists led by one well-known skeptic, Muller — and whose only climatologist listed is Judith Curry, a well-known confusionist [see Schmidt and Annan and Steig andVerheggen, and CP] — decided to reexamine all of the temperature data they could get their hands on. I broke the story of their initial findings in March 2011 (with the help of climatologist Ken Caldeira) – see Exclusive: Berkeley temperature study results “confirm the reality of global warming and support in all essential respects the historical temperature analyses of the NOAA, NASA, and HadCRU.”
The top figure is an updated chart of their findings from March of this year. They found a lot of warming.
Indeed, their key paper from 2011 found:
… our analysis suggests a degree of global land-surface warming during the anthropogenic era that is consistent with prior work (e.g. NOAA) but on the high end of the existing range of reconstructions.
So the only remaining question for BEST was: What is the cause of that warming? Of course, those who read ClimateProgress or the scientific literature already knew the answer to that question (see the 12/11 post, It’s “Extremely Likely That at Least 74% of Observed Warming Since 1950″ Was Manmade; It’s Highly Likely All of It Was).
BEST is set to release those findings this week. The excellent UK Guardian reporter, Leo Hickman, tweeted earlier today that “Significant climate-related news will be breaking on Guardian website in next 24-36 hours” and then he tweeted an hour ago the link to the excerpt of Muller’s op-ed. Here is the full excerpt:
CALL me a converted skeptic. Three years ago I identified scientific issues that, in my mind, threw doubt on the very existence of global warming. Now, after organizing an intensive research effort involving a dozen scientists, I’ve concluded that global warming is real, that the prior estimates of the rate were correct, and that cause is human.My turnaround is the result of the careful and objective analysis by the “Berkeley Earth Surface Temperature” team, founded by me and my daughter Elizabeth. Our results show that the average temperature of the Earth’s land has risen by two and a half degrees Fahrenheit over the past 250 years, and one and a half degrees Fahrenheit over the most recent 50 years. Moreover, it appears likely that essentially all of this increase is due to the human emission of greenhouse gases.These findings are stronger than those of the Intergovernmental Panel on Climate Change, the United Nations group that defines the scientific and diplomatic consensus on global warming. In its 2007 report, the IPCC concluded only that most of the warming of the prior 50 years could be attributed to humans. It was possible, according to the IPCC consensus statement, that the warming before to 1956 could be due to changes in solar activity, and that even a substantial part of the more recent warming could be natural.Our Berkeley Earth approach used sophistical statistical methods developed largely by our lead scientist Robert Rohde, and which allowed us to determine earth land temperature much further back in time. We carefully studied issues raised by skeptics: biases from urban heating (we duplicated our results using rural data alone), data selection (prior groups selected less than 20% of the available temperature stations; we used virtually 100%), poor station quality (we separately analyzed good stations and poor ones), and from human intervention and data adjustment (our work is completely automated and hands-off). In our papers we demonstrate that none of these potentially troublesome effects unduly biased our conclusions. …How definite is the attribution to humans? The carbon dioxide curve gives a better match than anything else we’ve tried. Its magnitude is consistent with the calculated greenhouse effect – extra warming from trapped heat radiation. These facts don’t prove causality and they shouldn’t end skepticism, but they raise the bar: to be considered seriously, an alternative explanation must match the data at least as well as does carbon dioxide. …
Well, in fact, to be seriously considered, an alternative explanation must match the data at least as well as does CO2 — and it must offer some mechanism that counteracts the well-known warming effect of CO2. Not bloody likely.
What about the future? As carbon dioxide emissions increase, the temperature should continue to rise. With a simple model (no tipping points, no sudden increase in cloud cover, a response to gases that is “logarithmic”) I expect the rate of warming to proceed at a steady pace, about 1.5 degree F over land in the next 50 years, less if the oceans are included. But if China continues its rapid growth (it has averaged 10% per year over the last 20 years) and its vast use of coal (typically adding one new gigawatt per month), then that same warming could take place in less than 20 years.
Ouch.
I asked Caldeira for a comment on Muller’s op-ed. He writes:
I am glad that Muller et al have taken a look at the data and have come to essentially the same conclusion that nearly everyone else had come to more than a decade ago.The basic scientific results have been established for a long time now, so I do not see the results of Muller et al as being scientifically important. However, their result may be politically important. It shows that even people who suspect climate scientists of being charlatans, when they take a hard look at the data, see that the climate scientists have been right all along.
Who’d have thunk it? Not the Kochs….
Climate Blame
ReplyDeleteWell looky here Golly Gee
this-here headline says
all the scientists agree
They say our grandkids
they will fry
and why would lab coats and politicians
ever lie
Scientists are good and really have a clue
praise be the scientists are pure and true
But the deniers throw their lies from all sides
although scientists did give us pesticides
I let the above comment through moderation in order to show readers just how mentally aberrant the deniers can be.
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