气候变化领域集成服务门户(CCPortal): Constraining Fossil Fuel CO2 Emissions From Urban Area Using OCO-2 Observations of Total Column CO2

CCPortal

DOI	10.1029/2019JD030528
	Constraining Fossil Fuel CO2 Emissions From Urban Area Using OCO-2 Observations of Total Column CO2
	Ye X.; Lauvaux T.; Kort E.A.; Oda T.; Feng S.; Lin J.C.; Yang E.G.; Wu D.
发表日期	2020
ISSN	2169897X
卷号	125 期号:8
英文摘要	Satellite observations of the total column dry-air CO2 (XCO2) are expected to support the quantification and monitoring of fossil fuel CO2 (ffCO2) emissions from urban areas. We evaluate the utility of the Orbiting Carbon Observatory 2 (OCO-2) XCO2 retrievals to optimize whole-city emissions, using a Bayesian inversion system and high-resolution transport modeling. The uncertainties of constrained emissions related to transport model, satellite measurements, and local biospheric fluxes are quantified. For the first two uncertainty sources, we examine cities of different landscapes: “plume city” located in relatively flat terrain, represented by Riyadh and Cairo; and “basin city” located in basin terrain, represented by Los Angeles (LA). The retrieved scaling factors of emissions and their uncertainties show prominent variabilities from track to track, due to the varying meteorological conditions and relative locations of the tracks transecting plumes. To explore the performance of multiple tracks in retrieving emissions, pseudo data experiments are carried out. The estimated least numbers of tracks required to constrain the total emissions for Riyadh (<10% uncertainty), Cairo (<10%), and LA (<5%) are 8, 5, and 7, respectively. Additionally, to evaluate the impact of biospheric fluxes on derivation of the ffXCO2 enhancements, we conduct simulations for Pearl River Delta metropolitan area. Significant fractions of local XCO2 enhancements associated with local biospheric XCO2 variations are shown, which potentially lead to biased estimates of ffCO2 emissions. We demonstrate that satellite measurements can be used to improve urban ffCO2 emissions with a sufficient amount of measurements and appropriate representations of the uncertainty components. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	fossil fuel carbon emissions; inverse modeling; satellite measurements
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/186043
作者单位	Department of Meteorology and Atmospheric Science, Pennsylvania State University, University Park, PA, United States; Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States; Laboratoire des Sciences du Climat et de l'Environnement, CEA, CNRS, UVSQ/IPSL, Université Paris-Saclay, Gif-sur-Yvette, France; Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, United States; Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Goddard Earth Sciences Technology and Research, Universities Space Research Association, Columbia, MD, United States; Department of Atmospheric Sciences, University of Utah, Salt Lake City, UT, United States
推荐引用方式 GB/T 7714	Ye X.,Lauvaux T.,Kort E.A.,et al. Constraining Fossil Fuel CO2 Emissions From Urban Area Using OCO-2 Observations of Total Column CO2[J],2020,125(8).
APA	Ye X..,Lauvaux T..,Kort E.A..,Oda T..,Feng S..,...&Wu D..(2020).Constraining Fossil Fuel CO2 Emissions From Urban Area Using OCO-2 Observations of Total Column CO2.Journal of Geophysical Research: Atmospheres,125(8).
MLA	Ye X.,et al."Constraining Fossil Fuel CO2 Emissions From Urban Area Using OCO-2 Observations of Total Column CO2".Journal of Geophysical Research: Atmospheres 125.8(2020).