Recently, a new metric has been introduced to quantify the spatial redistribution of energy that results from regional perturbations such as land-use change (Pielke et al. 2002). This metric will be discussed and results shown to indicate a globally-averaged redistribution of heat that is larger than the globally-averaged increase of radiative heating associated with the anthropogenic input of carbon dioxide. That land-use change and other interacting effects are not yet incorporated into climate change studies such as the IPCC (2001) and the U.S. National Assessment (http://www.usgcrp.gov/usgcrp/nacc/) may help explain the failure of the GCM-generated climate change scenarios to replicate the observed tropospheric temperature changes from 1980 to the present.
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