Friday, October 7, 2005
A report released online today by Science (to be published later) validates an important aspect of climate change modeling. Soden, et al, report that satellite measurements indicate an increasing moistening of upper troposphere from 1982 to 2004. This increase in water vapor had been assumed in modeling and is a key factor in the predicted increase in global temperatures. The increase in water vapor is a positive feedback from anthropogenic greenhouse gas emissions -- accelerating and significantly increasing the effect of those emissions on global warming.