气候变化领域集成服务门户(CCPortal): Regional-Scale, Sector-Specific Evaluation of Global CO2 Inversion Models Using Aircraft Data From the ACT-America Project

CCPortal

DOI	10.1029/2020JD033623
	Regional-Scale, Sector-Specific Evaluation of Global CO2 Inversion Models Using Aircraft Data From the ACT-America Project
	Gaudet B.J.; Davis K.J.; Pal S.; Jacobson A.R.; Schuh A.; Lauvaux T.; Feng S.; Browell E.V.
发表日期	2021
ISSN	2169897X
卷号	126 期号:4
英文摘要	We use 148 airborne vertical profiles of CO2 for frontal cases from the summer 2016 Atmospheric Carbon and Transport—America (ACT-America) campaign to evaluate the skill of 10 global CO2 in situ inversion models from the version 7 Orbiting Carbon Observatory–2 (OCO-2) Model Intercomparison Project (MIP). Model errors (model posterior—observed CO2 dry air mole fractions) were categorized by region (Mid-Atlantic, Midwest, and South), frontal sector (warm or cold), and transport model (predominantly Tracer Model 5 (TM5) and Goddard Earth Observing System—Chemistry [GEOS-Chem]). All inversions assimilated the same CO2 observations. Overall, the median inversion profiles reproduce the general structures of the observations (enhanced/depleted low-level CO2 in warm/cold sectors), but 1) they underestimate the magnitude of the warm/cold sector mole fraction difference, and 2) the spread among individual inversions can be quite large (>5 ppm). Uniquely in the Mid-Atlantic, inversion biases segregated according to atmospheric transport model, where TM5 inversions biases were −3 to −4 ppm in warm sectors, while those of GEOS-Chem were +2 to +3 ppm in cold sectors. The large spread among the mean posterior CO2 profiles is not explained by the different atmospheric transport models. These results show that the inversion systems themselves are the dominant cause of this spread, and that the aircraft campaign data are clearly able to identify these large biases. Future controlled experiments should identify which inversions best reproduce mid-latitude CO2 mole fractions, and how inversion system components are linked to system performance. © 2021. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185461
作者单位	Department of Meteorology and Atmospheric Science, The Pennsylvania State University, University Park, PA, United States; Pacific Northwest National Laboratory, Richland, WA, United States; Earth and Environmental Systems Institute, The Pennsylvania State University, University Park, PA, United States; Department of Geosciences, Atmospheric Science Division, Texas Tech University, Lubbock, TX, United States; CIRES, University of Colorado Boulder and NOAA Earth System Research Laboratory, Global Monitoring Laboratory, Boulder, CO, United States; CIRA, Colorado State University, Fort Collins, CO, United States; Laboratoire des Sciences du Climat et de l'Environnement, Gif-sur-Yvette, France; STARSS-III Affiliate, NASA Langley Research Center, Hampton, VA, United States
推荐引用方式 GB/T 7714	Gaudet B.J.,Davis K.J.,Pal S.,et al. Regional-Scale, Sector-Specific Evaluation of Global CO2 Inversion Models Using Aircraft Data From the ACT-America Project[J],2021,126(4).
APA	Gaudet B.J..,Davis K.J..,Pal S..,Jacobson A.R..,Schuh A..,...&Browell E.V..(2021).Regional-Scale, Sector-Specific Evaluation of Global CO2 Inversion Models Using Aircraft Data From the ACT-America Project.Journal of Geophysical Research: Atmospheres,126(4).
MLA	Gaudet B.J.,et al."Regional-Scale, Sector-Specific Evaluation of Global CO2 Inversion Models Using Aircraft Data From the ACT-America Project".Journal of Geophysical Research: Atmospheres 126.4(2021).