气候变化领域集成服务门户(CCPortal): Four years of global carbon cycle observed from the Orbiting Carbon Observatory 2 (OCO-2) version 9 and in situ data and comparison to OCO-2 version 7

CCPortal

DOI	10.5194/acp-22-1097-2022
	Four years of global carbon cycle observed from the Orbiting Carbon Observatory 2 (OCO-2) version 9 and in situ data and comparison to OCO-2 version 7
	Peiro, Helene; Crowell, Sean; Schuh, Andrew; Baker, David F.; O'Dell, Chris; Jacobson, Andrew R.; Chevallier, Frederic; Liu, Junjie; Eldering, Annmarie; Crisp, David; Deng, Feng; Weir, Brad; Basu, Sourish; Johnson, Matthew S.; Philip, Sajeev; Baker, Ian
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	1097
结束页码	1130
卷号	22 期号:2 页码:34
英文摘要	The Orbiting Carbon Observatory 2 (OCO-2) satellite has been providing information to estimate carbon dioxide (CO2) fluxes at global and regional scales since 2014 through the combination of CO2 retrievals with top-down atmospheric inversion methods. Column average CO2 dry-air mole fraction retrievals have been constantly improved. A bias correction has been applied in the OCO-2 version 9 retrievals compared to the previousOCO-2 version 7r improving data accuracy and coverage. We study an ensemble of 10 atmospheric inversions all characterized by different transport models, data assimilation algorithms, and prior fluxes using first OCO-2 v7 in 2015-2016 and then OCO-2 version 9 land observations for the longer period 2015-2018. Inversions assimilating in situ (IS) measurements have also been used to provide a baseline against which the satellite-driven results are compared. The time series at different scales (going from global to regional scales) of the models emissions are analyzed and compared to each experiment using either OCO-2 or IS data. We then evaluate the inversion ensemble based on the dataset from the Total Carbon Column Observing Network (TCCON), aircraft, and in situ observations, all independent from assimilated data. While we find a similar constraint of global total carbon emissions between the ensemble spread using IS and both OCO-2 retrievals, differences between the two retrieval versions appear over regional scales and particularly in tropical Africa. A difference in the carbon budget between v7 and v9 is found over this region, which seems to show the impact of corrections applied in retrievals. However, the lack of data in the tropics limits our conclusions, and the estimation of carbon emissions over tropical Africa require further analysis.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000748745600001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273027
作者单位	University of Oklahoma System; University of Oklahoma - Norman; Colorado State University; University of Colorado System; University of Colorado Boulder; National Oceanic Atmospheric Admin (NOAA) - USA; UDICE-French Research Universities; Universite Paris Saclay; CEA; Centre National de la Recherche Scientifique (CNRS); California Institute of Technology; National Aeronautics & Space Administration (NASA); NASA Jet Propulsion Laboratory (JPL); University of Toronto; Universities Space Research Association (USRA); National Aeronautics & Space Administration (NASA); NASA Goddard Space Flight Center; National Aeronautics & Space Administration (NASA); NASA Goddard Space Flight Center; National Aeronautics & Space Administration (NASA); NASA Ames Research Center; National Aeronautics & Space Administration (NASA); NASA Goddard Space Flight Center; Colorado State University; Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Delhi
推荐引用方式 GB/T 7714	Peiro, Helene,Crowell, Sean,Schuh, Andrew,et al. Four years of global carbon cycle observed from the Orbiting Carbon Observatory 2 (OCO-2) version 9 and in situ data and comparison to OCO-2 version 7[J],2022,22(2):34.
APA	Peiro, Helene.,Crowell, Sean.,Schuh, Andrew.,Baker, David F..,O'Dell, Chris.,...&Baker, Ian.(2022).Four years of global carbon cycle observed from the Orbiting Carbon Observatory 2 (OCO-2) version 9 and in situ data and comparison to OCO-2 version 7.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(2),34.
MLA	Peiro, Helene,et al."Four years of global carbon cycle observed from the Orbiting Carbon Observatory 2 (OCO-2) version 9 and in situ data and comparison to OCO-2 version 7".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.2(2022):34.