Articles | Volume 13, issue 11
https://doi.org/10.5194/amt-13-6271-2020
https://doi.org/10.5194/amt-13-6271-2020
Research article
 | 
23 Nov 2020
Research article |  | 23 Nov 2020

An improved TROPOMI tropospheric HCHO retrieval over China

Wenjing Su, Cheng Liu, Ka Lok Chan, Qihou Hu, Haoran Liu, Xiangguang Ji, Yizhi Zhu, Ting Liu, Chengxin Zhang, Yujia Chen, and Jianguo Liu

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Latest update: 23 Feb 2024
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Short summary
The paper presents an improved retrieval of the TROPOMI tropospheric HCHO column over China. The new retrieval optimized both slant column retrieval and air mass factor calculation for TROPOMI observations of HCHO over China. The improved TROPOMI HCHO is subsequently validated by MAX-DOAS observations. Compared to the operational product, the improved HCHO agrees better with the MAX-DOAS data and thus is better suited for the analysis of regional- and city-scale pollution in China.