Greenhouse gases play an important role in North American climate, but differences in regional ocean temperatures may hold a key to predicting future U.S. regional climate changes, according to a new NOAA-led scientific assessment. This assessment, Reanalysis of Historical Climate Data for Key Atmospheric Features: Implications for Attribution of Causes of Observed Change, describes what has changed—and why—in North America’s climate over the past half century. The authors address the likelihood and extent to which human activity or natural variations have driven surface warming, precipitation, droughts, and floods. The assessment is one in a series of synthesis and assessment reports coordinated by the U.S. Climate Change Science Program --
http://www.climatescience.gov/For more information, read the NOAA news release --
http://www.noaanews.noaa.gov/stories2008/20081211_climate.html