SUMMARY: New research funded by NASA indicates that some models of climate change might be overestimating what impact water vapour will have in raising average temperatures. This new study, based on data gathered by the Upper Atmosphere Research Satellite (UARS), verified that water vapour increases in the atmosphere as surface temperatures rise, but not as much as previously theorized. Water vapour is a significant greenhouse gas, so this new research will help scientists make much better predictions about future climate changes.

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