Extreme temperatures shock climatologists Hansen, Mann

Michael Mann is a climatologist famous for bringing together a complete chronology of warming over the last 1000 years, using both instrumental records and historical proxies. Everyone has seen his "hockey stick" chart, though not all have been able to face the facts. The attacks motivated Mann to write a fierce response, called The HockeyContinue reading “Extreme temperatures shock climatologists Hansen, Mann”

“Hockey Stick” scientist Mann’s letter in the WSJ

Michael Mann has been pilloried by climate change denialists for showing in a clear graphic form that the climate is as warm now as it has been in a thousand years. At the AGU this year, he pointed out that his critics have been refuted by numerous investigations, and mentioned a letter published today inContinue reading ““Hockey Stick” scientist Mann’s letter in the WSJ”

Mann’s latest temperature reconstruction record: Could a warming globe mean more La Ninas?

From a November paper by Michael Mann and cohorts in Science, meticulously reconstructing the temperature record over the last fifteen hundred years, from proxies including tree rings, pollen, coral, oxygen isotopes, sediments, and so on.  The end point — in black — is from the instrumental record.  This gives us a familiar conclusion — sinceContinue reading “Mann’s latest temperature reconstruction record: Could a warming globe mean more La Ninas?”