气候变化领域集成服务门户(CCPortal): Tropospheric SO2 and NO2 in 2012–2018: Contrasting views of two sensors (OMI and OMPS) from space

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DOI	10.1016/j.atmosenv.2019.117214
	Tropospheric SO2 and NO2 in 2012–2018: Contrasting views of two sensors (OMI and OMPS) from space
	Wang Y.; Wang J.
发表日期	2020
ISSN	1352-2310
卷号	223
英文摘要	The global long-term Climate Data Records (CDRs) of atmospheric SO2 and NO2 have been obtained from multiple satellite sensors since 1990s, and all these CDRs show consistently decreasing trends in developed countries and increasing trends in developing countries prior to 2010. However, much less clear is the quantitative differences among these CDRs and how such differences affect the inferences for atmospheric SO2 and NO2 climatology in terms of their annual means as well as their frequency distributions. Here, we compare and contrast the CDRs from the aged OMI sensor (the flagship for measuring NO2 and SO2 since 2005) and the young OMPS sensor series (that started measuring NO2 and SO2 in 2012 and will continue in next 2-3 decades). We show that after 2012, the difference of average SO2 between OMPS and OMI is 0.12 DU and it only decreases to 0.04 DU after bias correction, despite their consistence in spatial pattern. NO2 CDRs from OMPS and OMI overall exhibit general agreement in both magnitude and spatial pattern. Furthermore, the CDR differences can lead to the opposite trend signs in developed countries and the difficulty to reconcile trend magnitude in developing countries. Notable consistence in trend signs does exist, regardless of radiative cloud fraction, mainly showing decline of SO2 and NO2 in China and increasing in India; much inconsistence is, however, found in many parts of developed countries. No SO2 trends and inconsistent NO2 trends are found over Europe, and notable differences are found over U.S. where OMI SO2 and NO2's declining trends are consistent with surface observations, but OMPS SO2, albeit its better spatial agreement with surface data, shows increasing trend. This study calls the importance to assess CDRs from different satellite sensors with the account of frequency distributions for extreme events. This importance is emergent as the atmospheric SO2 and NO2 amounts are closer to the uncertainties of satellite-based retrievals in developed countries and are or will be declining in developing countries in the coming decades, all of which make the detection of signs, magnitudes, and spatiotemporal dichotomy a challenge from space. © 2019 Elsevier Ltd
关键词	Inconsistent trends NO2 OMI OMPS SO2
语种	英语
scopus关键词	Developing countries; Satellites; Climate data records; Developed countries; Frequency distributions; Inconsistent trends; Multiple satellites; OMPS; Satellite sensors; Surface observation; Nitrogen oxides; nitric oxide; ozone; sulfur oxide; developing world; nitrogen dioxide; satellite sensor; spatiotemporal analysis; sulfur dioxide; trend analysis; troposphere; atmosphere; chemoluminescence; China; climate; developed country; Europe; exhaust gas; fluorescence; priority journal; seasonal variation; space; troposphere; United States; China; Europe; India
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249384
作者单位	Interdisciplinary Graduate Program in Informatics, The University of Iowa, Iowa City, IA 52242, United States; Department of Chemical and Biochemical Engineering, Center for Global & Regional Environmental Research, The University of Iowa, Iowa City, IA 52242, United States
推荐引用方式 GB/T 7714	Wang Y.,Wang J.. Tropospheric SO2 and NO2 in 2012–2018: Contrasting views of two sensors (OMI and OMPS) from space[J],2020,223.
APA	Wang Y.,&Wang J..(2020).Tropospheric SO2 and NO2 in 2012–2018: Contrasting views of two sensors (OMI and OMPS) from space.ATMOSPHERIC ENVIRONMENT,223.
MLA	Wang Y.,et al."Tropospheric SO2 and NO2 in 2012–2018: Contrasting views of two sensors (OMI and OMPS) from space".ATMOSPHERIC ENVIRONMENT 223(2020).