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An improved TROPOMI tropospheric HCHO retrieval over China

文献类型：期刊论文

作者Su, Wenjing8; Liu, Cheng1,2,3,4,5; Chan, Ka Lok6; Hu, Qihou1; Liu, Haoran3; Ji, Xiangguang1,7; Zhu, Yizhi1; Liu, Ting8; Zhang, Chengxin8; Chen, Yujia1
刊名ATMOSPHERIC MEASUREMENT TECHNIQUES
出版日期2020-11-23
卷号13
ISSN号1867-1381
DOI10.5194/amt-13-6271-2020
通讯作者Liu, Cheng(chliu81@ustc.edu.cn) ; Chan, Ka Lok(ka.chan@dlr.de)
英文摘要We present an improved TROPOspheric Monitoring Instrument (TROPOMI) retrieval of formaldehyde (HCHO) over China. The new retrieval optimizes the slant column density (SCD) retrieval and air mass factor (AMF) calculation for TROPOMI observations of HCHO over China. Retrieval of HCHO differential SCDs (DSCDs) is improved using the basic optical differential spectroscopy (BOAS) technique resulting in lower noise and smaller random error, while AMFs are improved with a priori HCHO profiles from a higher resolution regional chemistry transport model. Compared to the operational product, the new TROPOMI HCHO retrieval shows better agreement with ground-based Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) measurements in Beijing. The improvements are mainly related to the AMF calculation with more precise a priori profiles in winter. Using more precise a priori profiles in general reduces HCHO vertical column densities (VCDs) by 52.37 % (+/- 27.09 %) in winter. Considering the aerosol effect in AMF calculation reduces the operational product by 11.46 % (+/- 1.48 %) and our retrieval by 17.61 % (+/- 1.92 %) in winter. The improved and operational HCHO are also used to investigate the spatial-temporal characteristics of HCHO over China. The result shows that both improved and operational HCHO VCDs reach maximum in summer and minimum in winter. High HCHO VCDs mainly located over populated areas, i.e., Sichuan Basin and central and eastern China, indicate a significant contribution of anthropogenic emissions. The hotspots are more obvious on the map of the improved HCHO retrieval than the operational product. The result indicates that the improved TROPOMI HCHO retrieval is more suitable for the analysis of regional- and city-scale pollution in China.
WOS关键词ABSORPTION CROSS-SECTIONS ; VOLATILE ORGANIC-COMPOUNDS ; MAX-DOAS MEASUREMENTS ; YANGTZE-RIVER DELTA ; EMISSION INVENTORY ; FORMALDEHYDE RETRIEVALS ; SECONDARY AEROSOL ; GLOBAL-MODEL ; HONG-KONG ; NO2
资助项目National Key Research and Development Program of China[2018YFC0213104] ; National Key Research and Development Program of China[2017YFC0210002] ; National Key Research and Development Program of China[2016YFC0203302] ; Anhui Science and Technology Major Project[18030801111] ; National Natural Science Foundation of China[41722501] ; National Natural Science Foundation of China[51778596] ; National Natural Science Foundation of China[41977184] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23020301] ; National Key Project for Causes and Control of Heavy Air Pollution[DQGG0102] ; National Key Project for Causes and Control of Heavy Air Pollution[DQGG0205] ; National High-Resolution Earth Observation Project of China[05-Y20A16-9001-15/17-2] ; Natural Science Foundation of Guangzhou Province[2016A030310115] ; Civil Aerospace Technology Advance Research Project[Y7K00100KJ] ; China Postdoctoral Science Foundation[2020TQ0320]
WOS研究方向Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000593006300001
出版者COPERNICUS GESELLSCHAFT MBH
资助机构National Key Research and Development Program of China ; Anhui Science and Technology Major Project ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key Project for Causes and Control of Heavy Air Pollution ; National High-Resolution Earth Observation Project of China ; Natural Science Foundation of Guangzhou Province ; Civil Aerospace Technology Advance Research Project ; China Postdoctoral Science Foundation
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/105469]  
专题中国科学院合肥物质科学研究院
通讯作者Liu, Cheng; Chan, Ka Lok
作者单位1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
3.Univ Sci & Technol China, Dept Precis Machinery & Precis Instrumentat, Hefei 230027, Peoples R China
4.Univ Sci & Technol China, Key Lab Precis Sci Instrumentat Anhui Higher Educ, Hefei 230027, Peoples R China
5.USTC, Anhui Prov Key Lab Polar Environm & Global Change, Hefei 230026, Peoples R China
6.German Aerosp Ctr DLR, Remote Sensing Technol Inst IMF, Oberpfaffenhofen, Germany
7.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Peoples R China
8.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Su, Wenjing,Liu, Cheng,Chan, Ka Lok,et al. An improved TROPOMI tropospheric HCHO retrieval over China[J]. ATMOSPHERIC MEASUREMENT TECHNIQUES,2020,13.
APA Su, Wenjing.,Liu, Cheng.,Chan, Ka Lok.,Hu, Qihou.,Liu, Haoran.,...&Liu, Jianguo.(2020).An improved TROPOMI tropospheric HCHO retrieval over China.ATMOSPHERIC MEASUREMENT TECHNIQUES,13.
MLA Su, Wenjing,et al."An improved TROPOMI tropospheric HCHO retrieval over China".ATMOSPHERIC MEASUREMENT TECHNIQUES 13(2020).

入库方式： OAI收割

来源：合肥物质科学研究院

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