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NEW YORK -- Water vapor and clouds are the major contributors to Earth's greenhouse effect, but a new atmosphere-ocean climate modeling study shows that the planet's temperature ultimately depends on the atmospheric level of carbon dioxide. The study, conducted by Andrew Lacis and colleagues at NASA's Goddard Institute for Space Studies (GISS) in New York, examined the nature of Earth's greenhouse effect and clarified the role that greenhouse gases and clouds play in absorbing outgoing infrared radiation. Notably, the team identified non-condensing greenhouse gases -- such as carbon dioxide, methane, nitrous oxide, ozone, and chlorofluorocarbons -- as providing the core...

Oct. 15) -- The Earth's atmosphere is a complicated place. Somewhere in that swirling, shifting mixture of air, water and other gasses is the key to keeping us earthlings alive -- or to cooking us. Carbon dioxide has always received the most media attention as the leading cause of climate change, and a new study from NASA does more than concur with this assessment: It finds CO2 is overwhelmingly responsible for raising Earth's temperature.

(Source: global-greenhouse-warming.com) Water vapor and clouds cannot sustain the greenhouse effect on their own Researchers at NASA's Goddard Institute for Space Studies (GISS) have concluded, through the use of a new atmosphere-ocean climate model, that carbon dioxide manipulates Earth's temperature.  Andrew Lacis of the GISS, along with David Rind and other colleagues, studied the Earth's greenhouse effect, and has concluded that non-condensing greenhouse gases such as carbon dioxide, ozone, chlorofluorocarbons, nitrous oxide and methane play central roles in the greenhouse effect.  While water vapor and clouds are the major players when it comes to Earth's greenhouse effect, Lacis and his colleagues...