Climate Change Update: “Human activities” cited as contributing to climate change, agriculturally related “land surface changes” were notable. “Humans alter land surface characteristics by carrying out irrigation, removing and introducing forests, changing vegetative land cover through agriculture, and building cities and reservoirs

 "Updating a 2007 position statement, the American Meteorological Society released an updated Statement on Climate Change Aug. 27. In addition to providing background and a brief overview on how and why the global climate has changed in recent decades, the statement names human activities as the main cause of atmospheric and oceanic warming. “There is unequivocal evidence that Earth’s lower atmosphere, ocean and land surface warming; sea level is rising; and snow cover, mountain glaciers, and Arctic sea ice are shrinking,” the statement concludes. “The dominant cause of the warming since the 1950s is human activities. This scientific finding is based on a large and persuasive body of research.”"

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