气候变化领域集成服务门户(CCPortal): Evaluating current satellite capability to observe diurnal change in nitrogen oxides in preparation for geostationary satellite missions

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DOI	10.1088/1748-9326/ab6b36
	Evaluating current satellite capability to observe diurnal change in nitrogen oxides in preparation for geostationary satellite missions
	Penn E.; Holloway T.
发表日期	2020
ISSN	17489318
卷号	15 期号:3
英文摘要	This study characterizes the degree to which current polar-orbiting satellites can evaluate the daytime change in NO2 vertical column density (VCD) in urban, suburban, and rural areas. We examine these issues by considering the diurnal cycle of NO2 over the United States, using the large NO2 monitoring network supported by states, tribes, and the US Environmental Protection Agency (EPA). Through this analysis, we identify the potential opportunities and limitations of current space-based NO2 data in capturing diurnal change. Ground-based monitoring data from the US EPA are compared with satellite retrievals of NO2 from the KNMI Tropospheric Emissions Monitoring Internet Service (TEMIS) for two instruments: GOME-2 with a mid-morning overpass, and OMI with an early afternoon overpass. Satellite data show evidence of higher morning NO2 in the vicinity of large urban areas. Both satellites and ground monitors show ∼1.5-2x greater NO2 abundance between morning and afternoon in urban areas. Despite differences in horizontal resolution and overpass time, the two satellite retrievals show similar agreement with ground-based NO2 measurements. When analyzed on a pixel-by-pixel basis, we find evidence for spatial structure in the diurnal change in NO2 between city center and surrounding areas in Southern California. Wider analysis of urban-suburban structure in diurnal NO2 change is hindered by resolution differences in the two satellite instruments, which have the potential to create data artefacts. This study highlights the value of future geostationary instruments to provide comparable satellite retrievals for NO2 over the course of a day, and research needs related to the effective utilization of NO2 satellite data for air quality applications. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	air pollution; air quality; remote sensing
语种	英语
scopus关键词	Air pollution; Air quality; Environmental Protection Agency; Nitrogen oxides; Orbits; Overpasses; Pixels; Remote sensing; Ground-based monitoring; Horizontal resolution; Polar-orbiting satellites; Satellite instruments; Southern California; Tropospheric emissions; US Environmental Protection Agency; Vertical column densities; Geostationary satellites; air quality; artifact; diurnal variation; geostationary satellite; GOME; ground-based measurement; nitrogen dioxide; remote sensing; rural area; satellite data; urban area; California; United States
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154167
作者单位	Nelson Institute Center for Sustainability and the Global Environment (SAGE), University of Wisconsin - Madison, Madison, WI 53726, United States; Geological Engineering, College of Engineering, University of Wisconsin - Madison, Madison, WI 53706, United States; Atmospheric and Oceanic Sciences, University of Wisconsin - Madison, Madison, WI 53706, United States
推荐引用方式 GB/T 7714	Penn E.,Holloway T.. Evaluating current satellite capability to observe diurnal change in nitrogen oxides in preparation for geostationary satellite missions[J],2020,15(3).
APA	Penn E.,&Holloway T..(2020).Evaluating current satellite capability to observe diurnal change in nitrogen oxides in preparation for geostationary satellite missions.Environmental Research Letters,15(3).
MLA	Penn E.,et al."Evaluating current satellite capability to observe diurnal change in nitrogen oxides in preparation for geostationary satellite missions".Environmental Research Letters 15.3(2020).