气候变化领域集成服务门户(CCPortal): Anthropogenic and volcanic point source SO2 emissions derived from TROPOMI on board Sentinel-5 Precursor: First results

CCPortal

DOI	10.5194/acp-20-5591-2020
	Anthropogenic and volcanic point source SO2 emissions derived from TROPOMI on board Sentinel-5 Precursor: First results
	Fioletov V.; Mclinden C.A.; Griffin D.; Theys N.; Loyola D.G.; Hedelt P.; Krotkov N.A.; Li C.
发表日期	2020
ISSN	16807316
起始页码	5591
结束页码	5607
卷号	20 期号:9
英文摘要	The paper introduces the first TROPOMI-based sulfur dioxide (span classCombining double low line"inline-formula"SO2/span) emissions estimates for point sources. A total of about 500 continuously emitting point sources releasing about 10 kt yrspan classCombining double low line"inline-formula"-1/span to more than 2000 kt yrspan classCombining double low line"inline-formula"-1/span of span classCombining double low line"inline-formula"SO2/span, previously identified from Ozone Monitoring Instrument (OMI) observations, were analyzed using TROPOMI (TROPOspheric Monitoring Instrument) measurements for 1 full year from April 2018 to March 2019. The annual emissions from these sources were estimated and compared to similar estimates from OMI and Ozone Mapping Profiling Suite (OMPS) measurements. Note that emissions from many of these 500 sources have declined significantly since 2005, making their quantification more challenging. We were able to identify 274 sources where annual emissions are significant and can be reliably estimated from TROPOMI. The standard deviations of TROPOMI vertical column density data, about 1 Dobson unit (DU, where 1 DU span classCombining double low line"inline-formula"math xmlnsCombining double low line"http://www.w3.org/1998/Math/MathML" idCombining double low line"M7" displayCombining double low line"inline" overflowCombining double low line"scroll" dspmathCombining double low line"mathml"mrowmoCombining double low line/momn mathvariantCombining double low line"normal"2.69/mnmo×/momsupmn mathvariantCombining double low line"normal"10/mnmn mathvariantCombining double low line"normal"16/mn/msup/mrow/mathspansvg:svg xmlns:svgCombining double low line"http://www.w3.org/2000/svg" widthCombining double low line"66pt" heightCombining double low line"14pt" classCombining double low line"svg-formula" dspmathCombining double low line"mathimg" md5hashCombining double low line"dc2d706a2ff317b1f8ca0af7c77163bf"svg:image xmlns:xlinkCombining double low line"http://www.w3.org/1999/xlink" xlink:hrefCombining double low line"acp-20-5591-2020-ie00001.svg" widthCombining double low line"66pt" heightCombining double low line"14pt" srcCombining double low line"acp-20-5591-2020-ie00001.png"//svg:svg/span/span molecules cmspan classCombining double low line"inline-formula"-2/span) over the tropics and 1.5 DU over high latitudes, are larger than those of OMI (0.6-1 DU) and OMPS (0.3-0.4 DU). Due to its very high spatial resolution, TROPOMI produces 12-20 times more observations over a certain area than OMI and 96 times more than OMPS. Despite higher uncertainties of individual TROPOMI observations, TROPOMI data averaged over a large area have roughly 2-3 times lower uncertainties compared to OMI and OMPS data. Similarly, TROPOMI annual emissions can be estimated with uncertainties that are 1.5-2 times lower than the uncertainties of annual emissions estimates from OMI. While there are area biases in TROPOMI data over some regions that have to be removed from emission calculations, the absolute magnitude of these are modest, typically within span classCombining double low line"inline-formula"±0.25/span DU, which can be comparable with span classCombining double low line"inline-formula"SO2/span values over large sources. © Author(s) 2020.
关键词	annual variation point source pollution quantitative analysis satellite data Sentinel spatial resolution sulfur dioxide sulfur emission
语种	英语
来源机构	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132042
推荐引用方式 GB/T 7714	Fioletov V.,Mclinden C.A.,Griffin D.,et al. Anthropogenic and volcanic point source SO2 emissions derived from TROPOMI on board Sentinel-5 Precursor: First results[J]. Atmospheric Chemistry and Physics,2020,20(9).
APA	Fioletov V..,Mclinden C.A..,Griffin D..,Theys N..,Loyola D.G..,...&Li C..(2020).Anthropogenic and volcanic point source SO2 emissions derived from TROPOMI on board Sentinel-5 Precursor: First results.,20(9).
MLA	Fioletov V.,et al."Anthropogenic and volcanic point source SO2 emissions derived from TROPOMI on board Sentinel-5 Precursor: First results".20.9(2020).