Reader Michael Smith asked about the provenance of Figure 1.1 in the SPM for the AR4 Synthesis Report. While we’ve had some discussions of WG1, we’ve not discussed the Synthesis Report before. While following up the references for this Figure, I encountered the WG1 FAQ – a document which I had previously not noticed. The […]
Roy Spencer has an interesting post on cloud feedback at Pielke Sr (which doesn’t permit comments.) He observes: On August 8, 2007, I posted here a guest blog entry on the possibility that our observational estimates of feedbacks might be biased in the positive direction. Danny Braswell and I built a simple time-dependent energy balance […]
Michael Smith asks: Since we are discussing uncertainty intervals, I have a question — probably a dumb one, but what the heck. In the Summary for Policy Makers, IPCC 4th AR, there is a graph “Figure SPM.1” on page 3. See here: http://www.ipcc.ch/pdf/assessment-report/ar4/syr/ar4_syr_spm.pdf The graph show “Global average surface temperature” since 1850. It includes individual […]
Pierrehumbert recently made the following statement about the truncation of data: Whatever the source of the purported … data, there is no legitimate reason in a paper published in 2007 for truncating the … record … as they did. There is, however, a very good illegitimate reason, in that truncating the curve in this way […]
It is a red-letter rule in business that transactions between a company and its insiders or employees must be disclosed. Some of the most egregious breaches by Enron were its attempts to avoid disclosure of writeoffs by selling worthless assets to the infamous limited partnerships organized by company insiders for equally worthless paper issued by […]
continued from Svalgaard #1 here. . Continued at Svalggard #3.
Former Virginia State Climatologist Patrick J. Michaels wrote an op-ed about his paper with Ross McKitrick from Canada’s University of Guelph in an American Spectator column today about the surface temperature record. This paragraph really caught my eye: “Weather equipment is very high-maintenance. The standard temperature shelter is painted white. If the paint wears or […]
Over Christmas, I thought good thoughts. It is disappointing to be dragged back to reality by another stunt at realclimate. Pierrehumbert made a number of very strong allegations about the integrity of the Courtillot et al analysis, and, in particular, contested whether Courtillot had even used Phil Jones data in their analysis. Pierrehumbert said: there […]
Back from a very pleasant Christmas. A little while ago, I threaded an interesting comment by UC on Tamino’s criticism of Schwartz. As a blog management aside, I like having this kind of thread by others as it was a good comment and it was based on a careful analysis of third party literature. I […]
Climate Audit 