A new TROPOMI product for tropospheric NO2 columns over East Asia with explicit aerosol corrections

Mengyao Liu, Jintai Lin*, Hao Kong, K.F. Boersma, Henk Eskes, Yugo Kanaya, Qin He, Xin Tian, Kai Qin, Pinhua Xie, Robert Spurr, Ruijing Ni, Yingying Yan, Hongjian Weng, Jingxu Wang

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

38 Citations (Scopus)


We present a new product with explicit aerosol corrections, POMINO-TROPOMI, for tropospheric nitrogen dioxide (NO2) vertical column densities (VCDs) over East Asia, based on the newly launched TROPOspheric Monitoring Instrument with an unprecedented high horizontal resolution. Compared to the official TM5-MP-DOMINO (OFFLINE) product, POMINO-TROPOMI shows stronger concentration gradients near emission source locations and better agrees with MAX-DOAS measurements (R2 D 0:75; NMB D 0:8% versus R2 D 0:68, NMB D 41:9 %). Sensitivity tests suggest that implicit aerosol corrections, as in TM5-MP-DOMINO, lead to underestimations of NO2 columns by about 25%over the polluted northern East China region. Reducing the horizontal resolution of a priori NO2 profiles would underestimate the retrieved NO2 columns over isolated city clusters in western China by 35% but with overestimates of more than 50% over many offshore coastal areas. The effect of a priori NO2 profiles is more important under calm conditions.

Original languageEnglish
Article number228
Pages (from-to)4247-4259
Number of pages13
JournalAtmospheric Measurement Techniques
Issue number8
Publication statusPublished - 13 Aug 2020


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