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| influences = James Van Allen | influenced = | awards = | religion = | signature = | footnotes = | website = }} James Edward Hansen was born on March 29, 1941 he is an American adjunct professor in the Department of Earth and Environmental Sciences at Columbia University. Hansen is best known for his research in the field of climatology, his testimony on climate change to congressional committees in 1988 that helped raise broad awareness of global warming, and his advocacy of action to avoid dangerous climate change. In recent years, Hansen has become a climate activist for action to mitigate the effects of climate change, which on a few occasions has led to his arrest.〔(【引用サイトリンク】title=Top NASA scientist arrested (again) in White House protest )〕 Hansen has advanced an alternative view of global warming wherein he argues the 0.74±0.18°C rise in average global temperatures over the last 100 years has been driven mainly by greenhouse gases other than carbon dioxide (such as methane).〔http://www.pnas.org/cgi/content/full/97/18/9875〕 ==Early life and education== Hansen was born in Denison, Iowa to James Ivan Hansen and Gladys Ray Hansen.〔Charles Sherwin Shene and Donna Hansen Stene, ''The Hansen Family,'' Decorah, IA, 2009, 56-57.〕 He was trained in physics and astronomy in the space science program of James Van Allen at the University of Iowa. He obtained a B.A. in Physics and Mathematics with highest distinction in 1963, an M.S. in Astronomy in 1965 and a Ph.D. in Physics, in 1967, all three degrees from the University of Iowa. He participated in the NASA graduate traineeship from 1962 to 1966 and, at the same time, between 1965 and 1966, he was a visiting student at the Institute of Astrophysics at the University of Kyoto and in the Department of Astronomy at the University of Tokyo. Hansen then began work at the Goddard Institute for Space Studies in 1967. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「James Hansen」の詳細全文を読む スポンサード リンク
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