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是太阳超级耀斑触发了最初的地球大气化学变化吗？根据美国国家航空航天局（NASA）科学家2016年5月23日在线发表于《自然·地球科学》上的一则研究，太阳年轻时的活跃可能有助于给早期地球生命提供所需成分和气候。氮是地球生命必需的基本组成，但在地球早期，氮可能只是以氮气形式存在于地球大气中，而且是一种很少参加化学反应的惰性物质。分解大气中的氮分子是一个高耗能过程，但只有这样才能让生物可以更好地利用重组...
A new inventory of air pollutant emissions in Asia in the year 2006 is developed to support the Intercontinental Chemical Transport Experiment-Phase B (INTEX-B) funded by the National Aeronautics and ...
Asian dust outflow in the PBL and free atmosphere retrieved by NASA CALIPSO and an assimilated dust transport model
Asian dust outflow PBL free atmosphere NASA CALIPSO dust transport model
2009/3/13
Three-dimensional structures of Asian dust transport in the planetary boundary layer (PBL) and free atmosphere occurring successively during the end of May 2007 were clarified using results of space-b...
Simulations of preindustrial, present-day, and 2100 conditions in the NASA GISS composition and climate model G-PUCCINI
preindustrial present-day NASA GISS composition climate model G-PUCCINI
2009/1/15
A model of atmospheric composition and climate has been developed at the NASA Goddard Institute for Space Studies (GISS) that includes composition seamlessly from the surface to the lower mesosphere. ...
Continental outflow from the US to the upper troposphere over the North Atlantic during the NASA INTEX-NA Airborne Campaign
upper troposphere North Atlantic NASA Airborne Campaign
2008/11/4
A case of continental outflow from the United States (US) was examined using airborne measurements from NASA DC-8 flight 13 during the Intercontinental Chemical Transport Experiment – North America (...
NASA科学家解释空气污染对气候的影响
空气污染
2008/1/18
NASA的科学家最近在Science杂志在线版上撰文，解释了空气污染对气候影响这一长期让人感到迷惑的问题。空气污染和烟尘带来的大气气溶胶在一些情况下会阻止云的生成，而在另外的情形下则加速云层变厚。而云不仅在全球范围内运送水气，还会控制太阳到达地球热量的多少。科学家们认为，在这一过程中，空气污染吸收太阳能量的能力是关键所在。当气溶胶粒子的混合使得受到污染的空气吸收更多的太阳辐射时，会阻止云的生成。而...