厄尔尼诺对热带太平洋上空大气二氧化碳的影响：美国国家航空航天局（NASA）的OCO - 2任务的研究结果
Influence of El Niño on atmospheric CO over the tropical Pacific Ocean: Findings from NASA's OCO-2 mission.
作者信息
Chatterjee A, Gierach M M, Sutton A J, Feely R A, Crisp D, Eldering A, Gunson M R, O'Dell C W, Stephens B B, Schimel D S
机构信息
Universities Space Research Association, Columbia, MD, USA.
NASA Global Modeling and Assimilation Office, Greenbelt, MD, USA.
出版信息
Science. 2017 Oct 13;358(6360). doi: 10.1126/science.aam5776.
Abstract
Spaceborne observations of carbon dioxide (CO) from the Orbiting Carbon Observatory-2 are used to characterize the response of tropical atmospheric CO concentrations to the strong El Niño event of 2015-2016. Although correlations between the growth rate of atmospheric CO concentrations and the El Niño-Southern Oscillation are well known, the magnitude of the correlation and the timing of the responses of oceanic and terrestrial carbon cycle remain poorly constrained in space and time. We used space-based CO observations to confirm that the tropical Pacific Ocean does play an early and important role in modulating the changes in atmospheric CO concentrations during El Niño events-a phenomenon inferred but not previously observed because of insufficient high-density, broad-scale CO observations over the tropics.
摘要
轨道碳天文台-2对二氧化碳（CO₂）的星载观测被用于描述热带大气中CO₂浓度对2015 - 2016年强厄尔尼诺事件的响应。尽管大气CO₂浓度增长率与厄尔尼诺-南方涛动之间的相关性已为人熟知，但这种相关性的大小以及海洋和陆地碳循环响应的时间在空间和时间上仍受到很大限制。我们利用天基CO₂观测来证实，热带太平洋在厄尔尼诺事件期间调节大气CO₂浓度变化方面确实发挥了早期且重要的作用——这是一种此前因热带地区缺乏高密度、大范围的CO₂观测而只是推断但未被观测到的现象。
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