As of today, FOIA.org released another 7zip file—which can be obtained here—containing 5000 unencypted, and an additional 250,000 encrypted, climate change emails from all the usual suspects we remember from Climategate. FOIA.org says they don’t plan on releasing the encryption keys for the remaining emails yet, but the 5,000 unencrypted emails are…interesting.
One quick take-away: Michael Mann’s temperature results may be…questionable.
I thought I’d play around with some randomly generated time-series and see if I could ‘reconstruct’ northern hemisphere temperatures.
[...] The reconstructions clearly show a ‘hockey-stick’ trend. I guess this is precisely the phenomenon that Macintyre has been going on about.
That would seem to be a pretty big vulnerability in the "hockey stick".
And the IPCC process seems…really questionable.
Observations do not show rising temperatures throughout the tropical troposphere unless you accept one single study and approach and discount a wealth of others. This is just downright dangerous. We need to communicate the uncertainty and be honest. Phil, hopefully we can find time to discuss these further if necessary [...]
I also think the science is being manipulated to put a political spin on it which for all our sakes might not be too clever in the long run.
The trick may be to decide on the main message and use that to guid[e] what’s included and what is left out.
In my [IPCC-TAR] review [...] I crit[i]cized [...] the Mann hockey[s]tick [...] My review was classified “unsignificant” even I inquired several times. Now the internationally well known newspaper SPIEGEL got the information about these early statements because I expressed my opinion in several talks, mainly in Germany, in 2002 and 2003. I just refused to give an exclusive interview to SPIEGEL because I will not cause damage for climate science.
Hence the AR4 Section 18.104.22.168.2 dismissal of the ACRIM composite to be instrumental rather than solar in origin is a bit controversial. Similarly IPCC in their discussion on solar RF since the Maunder Minimum are very dependent on the paper by Wang et al (which I have been unable to access) in the decision to reduce the solar RF significantly despite the many papers to the contrary in the ISSI workshop. All this leaves the IPCC almost entirely dependent on CO2 for the explanation of current global temperatures as in Fig 2.23. since methane CFCs and aerosols are not increasing.
I find myself in the strange position of being very skeptical of the quality of all present reconstructions, yet sounding like a pro greenhouse zealot here!
But, remember, the science is settled!
The results for 400 ppm stabilization look odd in many cases [...] As it stands we’ll have to delete the results from the paper if it is to be published.
 What if climate change appears to be just mainly a multidecadal natural fluctuation? They’ll kill us probably [...]
Although I agree that GHGs are important in the 19th/20th century (especially since the 1970s), if the weighting of solar forcing was stronger in the models, surely this would diminish the significance of GHGs.
[...] it seems to me that by weighting the solar irradiance more strongly in the models, then much of the 19th to mid 20th century warming can be explained from the sun alone.
would you agree that there is no convincing evidence for kilimanjaro glacier melt being due to recent warming (let alone man-made warming)?
[tropical glaciers] There is a small problem though with their retreat. They have retreated a lot in the last 20 years yet the MSU2LT data would suggest that temperatures haven’t increased at these levels.
There shouldn’t be someone else at UEA with different views [from "recent extreme weather is due to global warming"] – at least not a climatologist.
I am not convinced that the “truth” is always worth reaching if it is at the cost of damaged personal relationships
Phil, thanks for your thoughts – guarantee there will be no dirty laundry in the open.
He’s skeptical that the warming is as great as we show in East Antarctica — he thinks the “right” answer is more like our detrended results in the supplementary text. I cannot argue he is wrong.
<4470> Norwegian Meteorological Institute:
In Norway and Spitsbergen, it is possible to explain most of the warming after the 1960s by changes in the atmospheric circulation. The warming prior to 1940 cannot be explained in this way.
It is interesting to see the lower tropospheric warming minimum in the tropics in all three plots, which I cannot explain. I believe it is spurious but it is remarkably robust against my adjustment efforts.
You know what else is remarkably robust against adjustment efforts? Reality.
Climate scientist concludes “hide the decline” done to dishonestly hide data that didn’t support AGW conclusion
You may not know who Judith Curry is, but in my estimation she’s someone to be listened too in the world of climate change. She’s a professor and the chair of the School of Earth and Atmospheric Sciences at Georgia Tech.
She’s written a piece that’s been posted on the Climate Depot entitled “Hiding the Decline” which is a must read for anyone who has been following “Climate-gate” and especially for those ready to brush off the criticism that has been leveled at the warmists who were, in fact, engaged in hiding some data.
The question I am asking myself is what is my role as a scientist in challenging misuses of science (as per Beddington’s challenge)? Why or why not should I personally get involved in this? Is hiding the decline dishonest and/or bad science?
She concludes, after working through her questions, that it is both dishonest and bad science.
It is obvious that there has been deletion of adverse data in figures shown IPCC AR3 and AR4, and the 1999 WMO document. Not only is this misleading, but it is dishonest (I agree with Muller on this one). The authors defend themselves by stating that there has been no attempt to hide the divergence problem in the literature, and that the relevant paper was referenced. I infer then that there is something in the IPCC process or the authors’ interpretation of the IPCC process (i.e. don’t dilute the message) that corrupted the scientists into deleting the adverse data in these diagrams.
[Steve] McIntyre’s analysis is sufficiently well documented that it is difficult to imagine that his analysis is incorrect in any significant way. If his analysis is incorrect, it should be refuted. I would like to know what the heck Mann, Briffa, Jones et al. were thinking when they did this and why they did this, and how they can defend this, although the emails provide pretty strong clues. Does the IPCC regard this as acceptable? I sure don’t.
Can anyone defend “hide the decline”? I would much prefer to be wrong in my interpretation, but I fear that I am not.
That’s a pretty definitive conclusion. Take the time to read the whole thing … her reasoning and logic are solid and they support her conclusions. They also point out what many of us concluded some time ago – at least that group of “climate scientists” appear to have fudged data, hidden data or simply left it out to better use what was left to support their preconceived conclusions. In anyone’s book that should be a scandal.
Curry invites comment and rebuttal and while there’s plenty of commentary there’s very little in the way of reasonable or scientifically based rebuttal in the portion of the commentary I scanned.
Her piece, at least for me, puts the final nail in the “hide the decline” bunch’s coffin. The case she makes points to an obvious attempt to deceive. And that is not what science is or should be about. Make sure you read the whole thing.
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What was always suspected, yet never proved, has now been exposed:
The UN’s Intergovernmental Panel on Climate Change misled the press and public into believing that thousands of scientists backed its claims on manmade global warming, according to Mike Hulme, a prominent climate scientist and IPCC insider. The actual number of scientists who backed that claim was “only a few dozen experts,” he states in a paper for Progress in Physical Geography, co-authored with student Martin Mahony.
“Claims such as ‘2,500 of the world’s leading scientists have reached a consensus that human activities are having a significant influence on the climate’ are disingenuous,” the paper states unambiguously, adding that they rendered “the IPCC vulnerable to outside criticism.”
You’re shocked I’m sure. But just who is Mike Hulme that he’d have any credibility to make such a bold claim? As it turns out, he’s not only a professor at the School of Environmental Sciences at the University of East Anglia (yes, that one), and the founding Director of the Tyndall Centre for Climate Change Research, he also was a co-ordinating lead author on a portion of the IPCC
Not exactly a climate-denialist. But you do have to wonder why he’s making this claim now? Why didn’t he expose the consensus fraud while in the middle of his work on the IPCC?
Actually, if you read the paper (pdf) in which his statement appears, it seems that Hulme wasn’t so much making an accusation as he was simply making an offhand comment:
Since its origins, the IPCC has been open and explicit about seeking to generate a ‘scientific consensus’ around climate change and especially about the role of humans in climate change. Yet this has been a source of both strength and vulnerability for the IPCC. Understanding consensus as a process of ‘truth creation’ (or the more nuanced ‘knowledge production’) which marginalises dissenting voices – as has frequently been portrayed by some of the IPCC’s critics (see Edwards & Schneider, 2001; Petersen, 2010) – does not do justice to the process.
Consensus-building in fact serves several different goals. As Horst and Irwin (2010) have explained, seeking consensus can be as much about building a community identity – what Haas (1992) refers to as an epistemic community – as it is about seeking the ‘truth’. Equally, as Yearley (2009) explains, IPCC consensus-making is an exercise in collective judgement about subjective (or Bayesian) likelihoods in areas of uncertain knowledge. Consensus-making in the IPCC has been largely driven by the desire to communicate climate science coherently to a wide spectrum of policy users – ‘to construct knowledge’ (Weingart, 1999) – but in so doing communicating uncertainties have been down-played (van der Sluijs, 1998). As Oppenheimer et al. (2007: 1506) remark: “The establishment of consensus by the IPCC is no longer as critical to governments as [is] a full exploration of uncertainty.”
Without a careful explanation about what it means, this drive for consensus can leave the IPCC vulnerable to outside criticism. Claims such as ‘2,500 of the world’s leading scientists have reached a consensus that human activities are having a significant influence on the climate’ are disingenuous. That particular consensus judgement, as are many others in the IPCC reports, is reached by only a few dozen experts in the specific field of detection and attribution studies; other IPCC authors are experts in other fields. But consensus-making can also lead to criticism for being too conservative, as Hansen (2007) has most visibly argued. Was the IPCC AR4 too conservative in reaching its consensus about future sea-level rise? Many glaciologists and oceanographers think they were (Kerr, 2007; Rahmstorf, 2010), leading to what Hansen attacks as ‘scientific reticence’. Solomon et al. (2008) offer a robust defence, stating that far from reaching a premature consensus, the AR4 report stated that in fact no consensus could be reached on the magnitude of the possible fast ice-sheet melt processes that some fear could lead to 1 or 2 metres of sea-level rise this century. Hence these processes were not included in the quantitative estimates.
Incredibly, Hulme’s point here is that making completely false claims, such as that a consensus on AGW has been reached by “2,500 of the world’s leading scientists” (or maybe it’s 4,000!), is merely the aggressive flip-side to being too conservative in failing to make unsupported claims on which no one agrees. At least, he compares these two “criticisms” of the IPCC efforts to build consensus as if they were two ends of a spectrum. Sadly, when it comes to climate “science” this is exactly where the problem lies.
Instead of dealing in actual science (where hypotheses are proposed, experiments and data-collection ensue, and actual results inform us as to what is happening), we instead are offered catastrophic theories unsupported by little if any actual data but that, by golly gee, sure do have a whole lot of “consensus” behind them. After all, who are we peons to doubt the “experts”? It’s not as if a group of people has ever been persuaded to … ahem, “adjust” their arguments in order to acquire sweeping political power. One wonders if the word “cabal” exists in any dictionaries in the University of East Anglia’s libraries.
If anyone working on the IPCC wants to know why their reputation is in the tank, perhaps they’d better take a look at what the public “consensus” is regarding fraudulent claims designed to increase the fraudsters’ power. And then maybe they should reacquaint themselves with actual science.