紫外大气甲醛卫星遥感反演方法和研究现状

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Abstract Formaldehyde (HCHO) is a toxic trace gas and carcinogen that mainly concentrates in atmospheric planetary layer. The lifetime of HCHO is short at an order of several hours. Anthropogenic VOC gradually becomes a negligible part of air pollution in China and HCHO is an important indicator of VOC. Apparently, the investigation of HCHO is very valuable. Due to the lack of in situ observations for HCHO, satellite-based remote sensing proving frequent and large coverage measurements becomes a significant alternative. In this study, the payloads for HCHO detection and retrieval theories were discussed and analyses concerning the research status in China were provided along with corresponding shortcomings. From the last century, payloads commonly available for HCHO detection were GOME/ERS-2, SCIAMACHY/ENVISAT, OMI/Aura, GOME-2/MetOp-A(B) and OMPS/Suomi-NPP. Relative information were reviewed about satellite orbits, spatiotemporal resolution and appliance in HCHO retrieval. Because of the top-down observation of satellite platform which is different to the bottom-up of in situ observation, the retrieval algorithms are different as well. Apparently, the main focus here is two majorly adopted methods for HCHO retrieval:differential optical absorption spectroscopy (DOAS) and recently proposed principal component analysis (PCA).

Key words： HCHO remote sensing retrieval DOAS PCA OMI

Received: 29 September 2017

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	Articles by authors
	ZHU Song-yan
	YU Chao
	LI Xiao-ying
	CHEN Liang-fu
	ZHU Hao

Cite this article:

ZHU Song-yan,YU Chao,LI Xiao-ying等. An overview of satellite-based formaldehyde retrieval and present status[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(5): 1685-1694.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I5/1685

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