气候变化领域集成服务门户(CCPortal): Measurement report: Spatiotemporal variability of peroxy acyl nitrates(PANs) over Mexico City from TES and CrIS satellite measurements

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DOI	10.5194/acp-23-2667-2023
	Measurement report: Spatiotemporal variability of peroxy acyl nitrates(PANs) over Mexico City from TES and CrIS satellite measurements
	Shogrin, Madison J.; Payne, Vivienne H.; Kulawik, Susan S.; Miyazaki, Kazuyuki; Fischer, Emily V.
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	2667
结束页码	2682
卷号	23 期号:4 页码:16
英文摘要	Peroxy acyl nitrates (PANs) are photochemical pollutants with implications for health and atmospheric oxidation capacity. PANs are formed via the oxidation of non-methane volatile organic compounds (NMVOCs) in the presence of nitrogen oxide radicals (NOx = NO + NO2). While urban environments are large sources of PANs, in situ observations in urban areas are limited. Here we use satellite measurements of PANs from the Tropospheric Emission Spectrometer (TES) and the Suomi National Polar-orbiting Partnership (S-NPP) Cross-track Infrared Sounder (CrIS) to evaluate the spatiotemporal variability of PANs over and around Mexico City. Monthly mean maxima in PANs over the Mexico City Metropolitan Area (MCMA) occur during spring months (March-May). This time of year coincides with a peak in local photochemistry and more frequent air stagnation. Local fire activity also typically peaks between February and May, which leads to strong interannual variability of PANs over the MCMA. We use S-NPP CrIS data to probe the spatial outflow pattern of PANs produced within urban Mexico City during the month with the largest mixing ratios of PANs (April). Peak outflow in April occurs to the northeast of the city and over the mountains south of the city. Outflow to the northwest appears infrequently. Using observations during 2018 versus 2019, we also show that PANs were not significantly reduced during a year, with a significant decrease in NOx over Mexico City. Our analysis demonstrates that the space-based observations provided by CrIS and TES can increase understanding of the spatiotemporal variability of PANs over and surrounding Mexico City.
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:000940490300001
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/273797
作者单位	Colorado State University; California Institute of Technology; National Aeronautics & Space Administration (NASA); NASA Jet Propulsion Laboratory (JPL)
推荐引用方式 GB/T 7714	Shogrin, Madison J.,Payne, Vivienne H.,Kulawik, Susan S.,et al. Measurement report: Spatiotemporal variability of peroxy acyl nitrates(PANs) over Mexico City from TES and CrIS satellite measurements[J],2023,23(4):16.
APA	Shogrin, Madison J.,Payne, Vivienne H.,Kulawik, Susan S.,Miyazaki, Kazuyuki,&Fischer, Emily V..(2023).Measurement report: Spatiotemporal variability of peroxy acyl nitrates(PANs) over Mexico City from TES and CrIS satellite measurements.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(4),16.
MLA	Shogrin, Madison J.,et al."Measurement report: Spatiotemporal variability of peroxy acyl nitrates(PANs) over Mexico City from TES and CrIS satellite measurements".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.4(2023):16.