The added value of satellite observations of methane forunderstanding the contemporary methane budget.
The added value of satellite observations of methane forunderstanding the contemporary methane budget.
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DOI：
10.1098/rsta.2021.0106
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发表时间：
2021-11-15
期刊：
影响因子：
--
通讯作者：
Borsdorff T
中科院分区：
文献类型：
--
作者：
Palmer PI;Feng L;Lunt MF;Parker RJ;Bösch H;Lan X;Lorente A;Borsdorff T
地面观测记录了大气甲烷（CH 4）本世纪的大的和不完全理解的变化。然而，由于其地理分布偏向于北方中纬度地区，因此其揭示地表源和汇的能力受到限制。自2009年发射日本温室气体观测卫星以来，专门用于测量大气甲烷的地球轨道卫星提供了数据。我们评估GOSAT的附加值，由美国国家海洋和大气管理局（NOAA），这一直是关键的知识，自20世纪80年代以来，大气甲烷收集的数据。为了实现这一目标，我们使用GEOS-Chem大气化学传输模型和逆方法来推断后验通量估计从NOAA和GOSAT数据使用共同的先验排放清单。我们发现GOSAT数据的主要好处是其对热带地区的额外覆盖，自2014/2016年厄尔尼诺以来，由于生物质燃烧，生物源排放和能源生产的推动，我们报告了大幅增加。我们使用来自欧洲对流层监测仪器的数据来展示更好的空间覆盖和分辨率测量如何使我们能够量化以前无法实现的CH 4扩散源，从而开辟了一个新的研究前沿。这篇文章是讨论会议议题“甲烷上升：变暖是变暖的饲料吗？”(part 1英尺。
Surface observations have recorded large and incompletely understood changes to atmospheric methane (CH4) this century. However, their ability to reveal the responsible surface sources and sinks is limited by their geographical distribution, which is biased towards the northern midlatitudes. Data from Earth-orbiting satellites designed specifically to measure atmospheric CH4 have been available since 2009 with the launch of the Japanese Greenhouse gases Observing SATellite (GOSAT). We assess the added value of GOSAT to data collected by the US National Oceanic and Atmospheric Administration (NOAA), which have been the lynchpin for knowledge about atmospheric CH4 since the 1980s. To achieve that we use the GEOS-Chem atmospheric chemistry transport model and an inverse method to infer a posteriori flux estimates from the NOAA and GOSAT data using common a priori emission inventories. We find the main benefit of GOSAT data is from its additional coverage over the tropics where we report large increases since the 2014/2016 El Niño, driven by biomass burning, biogenic emissions and energy production. We use data from the European TROPOspheric Monitoring Instrument to show how better spatial coverage and resolution measurements allow us to quantify previously unattainable diffuse sources of CH4, thereby opening up a new research frontier. This article is part of a discussion meeting issue ‘Rising methane: is warming feeding warming? (part 1)’.
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影响因子：
4.4
作者：
FUNG, I;JOHN, J;FRASER, PJ
通讯作者：
FRASER, PJ
影响因子：
6.3
作者：
Fraser, A.;Palmer, P. I.;Langenfelds, R. L.
通讯作者：
Langenfelds, R. L.
影响因子：
4.4
作者：
Bergamaschi, Peter;Frankenberg, Christian;Levin, Ingeborg
通讯作者：
Levin, Ingeborg
影响因子：
6.3
作者：
Fraser, A.;Palmer, P. I.;Weiss, R. F.
通讯作者：
Weiss, R. F.
影响因子：
5.1
作者：
Bloom, A. Anthony;Bowman, Kevin W.;Jacob, Daniel J.
通讯作者：
Jacob, Daniel J.