Cloudy climate change: How clouds affect Earth's temperature - Jasper Kirkby

View full lesson: http://ed.ted.com/lessons/cloudy-climate-change-how-clouds-affect-earth-s-temperature-jasper-kirkby As the Earth's surface temperature gradually rises, it has become vital...

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Cloudy climate change: How clouds affect Earth's temperature.Earth's average surface temperature has warmed by .8 Celsius since 1750.When carbon dioxide concentrations in the atmosphere have doubled,which is expected before the end of the 21st century,researchers project global temperatureswill have risen by 1.5 to 4.5 degrees Celsius.If the increase is near the low end, 1.5 Celsius,then we're already halfway there, and we should be more able to adaptwith some regions becoming drier and less productive,but others becoming warmer, wetter and more productive.On the other hand, a rise of 4.5 degrees Celsius would be similar in magnitudeto the warming that's occurred since the last glacial maximum 22,000 years ago,when most of North America ...