Limits on CO2 Climate Forcing From Recent Temperature Data Of Earth

David H. Douglassa and John R. Christyb



Accepted by Energy and Environment Aug 2008





Abstract

The global atmospheric temperature anomalies of Earth reached a maximum
in 1998 which has not been exceeded during the subsequent 10 years. The
global anomalies are calculated from the average of climate effects
occurring in the tropical and the extratropical latitude bands. El
Niño/La Niña effects in the tropical band are shown to explain the 1998
maximum while variations in the background of the global anomalies
largely come from climate effects in the northern extratropics. These
effects do not have the signature associated with CO2 climate forcing.
However, the data show a small underlying positive trend that is
consistent with CO2 climate forcing with no-feedback.



aDepartment of Physics and Astronomy, University of Rochester,
Rochester, NY 14627, USA



bDepartment of Atmospheric Science and Earth System Science Center,
University of Alabama in Huntsville, Huntsville, AL 35899, USA




--


Warmest Regards

Bonzo

"The whole problem with the world is that fools and fanatics are always
so certain of themselves, but wiser people so full of doubts" Bertrand
Russell