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The Sun Both Ways

机译:双向的太阳

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摘要

The A Train of Earth-observing satellites that NASA leads is set to get a new member with the Feb. 23 launch of Glory. The $424 million mission focuses on the subtle ways solar radiance influences the planet's climate. While climatologists have developed an increasingly sophisticated understanding of the role that greenhouse gases such as carbon dioxide play in climate change, they are less certain about how solar variability and aerosols factor into the climate-change equation. "The range of uncertainty associated with the climate impact of aerosols is three to four times that of greenhouse gases," says Glory scientist James Han- sen, director of NASAfc Goddard Institute of Space Studies (GISS) in New York.
机译:随着2月23日“荣耀”号的发射,由美国国家航空航天局(NASA)领导的“地球观测卫星系列”将获得新的成员。这项耗资4.24亿美元的任务的重点是太阳辐射影响地球气候的微妙方式。尽管气候学家对二氧化碳等温室气体在气候变化中所起的作用有了越来越深入的了解,但他们对太阳的可变性和气溶胶如何影响气候变化方程式仍不确定。 “与气溶胶对气候的影响相关的不确定性范围是温室气体的三至四倍,”位于纽约的美国宇航局戈达德空间研究所(GISS)主任,荣耀科学家詹姆斯·汉森(James Hansen)说。

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