Of Warm Poles and Cold Tropics

Why are the poles warm and the tropics cold, and compared to what? An equivalent question is: what determines the difference in temperature between tropics and poles, and can we…

Tropical lizards safe from climate change forced extinction

Some good news from Dartmouth College Climate change may have little impact on tropical lizards Dartmouth study contradicts predictions of widespread extinction A new Dartmouth College study finds human-caused climate…

Tropical Crime and Punishment

Guest Post by Willis Eschenbach People sometimes ask how I learned so much about coral atolls and islands. It’s because for three years in the late ’80s I lived in…

Natural Variability in the Widths of the Tropics

Guest Post by Willis Eschenbach In my previous post, “Does This Analysis Make My Tropics Look Big?“I discussed a paper called “Recent Northern Hemisphere tropical expansion primarily driven by black…

UAH Global temperature, up in April

UAH Global Temperature Update for April 2012: +0.30°C By Dr. Roy Spencer The global average lower tropospheric temperature anomaly increased again in April, 2012, to +0.30°C., with warming in both…

UAH global temperature anomaly – still below the zero line

UAH Global Temperature Update for February 2012: -0.12 deg. C By Dr. Roy Spencer The global average lower tropospheric temperature anomaly cooled a little more in February, 2012, again not…

CO2 Sensitivity is Multi-Modal – All bets are off

Guest Post by Ira Glickstein A multi-modal probability distribution, such as the graphic below [from Schmittner 2011], cries out “MULTIPLE POPULATIONS”. Equilibrium Climate Sensitivity (expected temperature increase due to a…