轨道碳天文台-2对区域二氧化碳通量的早期科学调查。
The Orbiting Carbon Observatory-2 early science investigations of regional carbon dioxide fluxes.
作者信息
Eldering A, Wennberg P O, Crisp D, Schimel D S, Gunson M R, Chatterjee A, Liu J, Schwandner F M, Sun Y, O'Dell C W, Frankenberg C, Taylor T, Fisher B, Osterman G B, Wunch D, Hakkarainen J, Tamminen J, Weir B
机构信息
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.
Division of Geology and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA.
出版信息
Science. 2017 Oct 13;358(6360). doi: 10.1126/science.aam5745.
Abstract
NASA's Orbiting Carbon Observatory-2 (OCO-2) mission was motivated by the need to diagnose how the increasing concentration of atmospheric carbon dioxide (CO) is altering the productivity of the biosphere and the uptake of CO by the oceans. Launched on 2 July 2014, OCO-2 provides retrievals of the column-averaged CO dry-air mole fraction ([Formula: see text]) as well as the fluorescence from chlorophyll in terrestrial plants. The seasonal pattern of uptake by the terrestrial biosphere is recorded in fluorescence and the drawdown of [Formula: see text] during summer. Launched just before one of the most intense El Niños of the past century, OCO-2 measurements of [Formula: see text] and fluorescence record the impact of the large change in ocean temperature and rainfall on uptake and release of CO by the oceans and biosphere.
摘要
美国国家航空航天局的轨道碳观测站-2（OCO-2）任务的动机是需要查明大气二氧化碳（CO₂）浓度不断增加是如何改变生物圈生产力以及海洋对CO₂的吸收情况的。OCO-2于2014年7月2日发射，可获取柱平均CO₂干空气摩尔分数（[公式：见正文]）以及陆地植物中叶绿素的荧光数据。陆地生物圈吸收的季节性模式记录在荧光以及夏季[公式：见正文]的减少中。OCO-2在过去一个世纪最强烈的厄尔尼诺现象之一即将发生之前发射，对[公式：见正文]和荧光的测量记录了海洋温度和降雨量的巨大变化对海洋和生物圈吸收与释放CO₂的影响。
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