The Blackboard

Today’s Chicago Tribune asked Are farmers cooling Chicago’s summers? The article begins Amid one of the warmest springs on record in Chicago, and renewed worries about our warming planet, how is that late summer days across the Midwest are cooling? Evidently, David Changnon, a climatologist from UIUC NIU has been studying the changes in the [...]

Several readers, most recently Alex Heyworth, have been asking me to jump into the VS/Bart/Dave Stockwell/Tamino fray. It appears VS is making some sort of claims in comments at Bart’s blog. The claims and clarifications are spread out over 760 or so comments, with various interjections. I have been alerted that these claims all a [...]

In comments yesterday, Nathan seemed to indicate he wanted to see the result of some sort of test with data beginning in January 2001. Here’s a graph just for Nathan: Above is a graph showing how the trend of 0.2 C/decade fits into ±95% uncertainty intervals computed for NOAA observation. The uncertainty intervals are estimated [...]

GISSTemp released their land/ocean anomalies for February. It’s 0.71C, just edging out January. Rebaselined anomalies and trends since 1980 are shown below, along with with a trend of 0.2C/decade shown for reference: This is a hot start for the year. Factoids about the GISSTemp data: This is the second highest Feb. anomaly in the record; [...]

RSS, UAH (v5.2) and the new revised UAH (v5.3) February temperature anomalies for the lower troposphere have been posted; anomalies during the observational record are shown below along with the multi-model mean for the surface temperature based on 20th century simulations extended into the 21st century using A1B : Comparison of the RSS and UAH [...]

Paul Dennis of University of East Anglia has started a new blog called Harmonic Oscillator. I’ve added this to my blogroll and encourage you to visit a time or two over the next few weeks. Good luck Paul!

In a previous post, I reported trend analysis of the difference between GISSTemp observations and the model mean projection for surface temperatures from simulation from IPCC models extended into the 21st century using the A1B scenario tell us we should reject the hypothesis that the model mean simulation agrees with the observations reported by GISS. [...]

Did you know you can cherry pick without knowing it? It works like this: You speculate there “some trees” are temperature proxies, but “other trees aren’t. (So far, you’re actually ok.) Then, instead of trying to do a real calibration study to discover what sorts of trees are temperature proxies and which aren’t, you just [...]

Recently, Chip Knappenberger commented on some cherry picking by both Richard Lindzen and the fellows over at RC. Roger commented. I’m posting to add my two cents, focusing on two points: Observing that RC may have mixed an apples to oranges comparisons into their cherry pie. Evaluating a suggestion by Gavin’s that appeared in a [...]

Obama, Oprah, Michelle, and Mayor Daley all tried their best. But Rio will host the 2016 Olympics. I suspect this will please as many Chicagoans as it displeases.