气候变化领域集成服务门户(CCPortal): Errors in top-down estimates of emissions using a known source

CCPortal

DOI	10.5194/acp-20-11855-2020
	Errors in top-down estimates of emissions using a known source
	Angevine W.M.; Peischl J.; Crawford A.; Loughner C.P.; Pollack I.B.; Thompson C.R.
发表日期	2020
ISSN	1680-7316
起始页码	11855
结束页码	11868
卷号	20 期号:20
英文摘要	Air pollutant emissions estimates by top-down methods are subject to a variety of errors and uncertainties. This work uses a known source, a coal-fired power plant, to explore those errors. The known emissions amount and location remove two major types of error, facilitating understanding of other types. Biases and random errors are distinguished. A Lagrangian dispersion model (HYSPLIT) is run forward in time from the known source, and virtual measurements of the resulting tracer plume are compared to actual measurements from research aircraft. Four flights in different years are used to illustrate a variety of conditions. The measurements are analyzed by a mass-balance method, and the assumptions of that method are discussed. Some of those assumptions can be relaxed in analysis of the modeled plume, allowing testing of their validity. Meteorological fields to drive HYSPLIT are provided by the European Centre for Medium-Range Weather Forecasts Fifth Reanalysis (ERA5). A unique feature of this work is the use of an ensemble of meteorological fields intrinsic to ERA5. This analysis supports reasonably large (30 %-40 %) uncertainties on top-down analyses. © 2020 Author(s).
语种	英语
scopus关键词	airborne survey; atmospheric pollution; emission inventory; ensemble forecasting; error analysis; Lagrangian analysis; pollutant source; tracer
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/247465
作者单位	Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, CO, United States; NOAA Chemical Sciences Laboratory, Boulder, CO, United States; Atmospheric Sciences Modeling Division, Air Resources Laboratory, NOAA, College Park, MD, United States; Cooperative Institute for Satellite Earth System Studies (CISESS), Earth System Science Interdisciplinary Center (ESSIC), University of Maryland, College Park, MD, United States; Department of Atmospheric Science, Colorado State University, Ft. Collins, CO, United States
推荐引用方式 GB/T 7714	Angevine W.M.,Peischl J.,Crawford A.,et al. Errors in top-down estimates of emissions using a known source[J],2020,20(20).
APA	Angevine W.M.,Peischl J.,Crawford A.,Loughner C.P.,Pollack I.B.,&Thompson C.R..(2020).Errors in top-down estimates of emissions using a known source.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(20).
MLA	Angevine W.M.,et al."Errors in top-down estimates of emissions using a known source".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.20(2020).