Articles | Volume 15, issue 19
Research article
12 Oct 2022
Research article |  | 12 Oct 2022

Impact of 3D cloud structures on the atmospheric trace gas products from UV–Vis sounders – Part 2: Impact on NO2 retrieval and mitigation strategies

Huan Yu, Claudia Emde, Arve Kylling, Ben Veihelmann, Bernhard Mayer, Kerstin Stebel, and Michel Van Roozendael

Data sets

S5P Copernicus Open Access Hub

Comprehensive Large Array-data Stewardship System (CLASS) NOAA

Model code and software

QDOAS T. Danckaert, C. Fayt, M. Van Roozendael, I. De Smedt, V. Letocart, A. Merlaud, and G. Pinardi

Short summary
In this study, we have investigated the impact of 3D clouds on the tropospheric NO2 retrieval from UV–visible sensors. We applied standard NO2 retrieval methods including cloud corrections to synthetic data generated by the 3D radiative transfer model. A sensitivity study was done for synthetic data, and dependencies on various parameters were investigated. Possible mitigation strategies were investigated and compared based on 3D simulations and observed data.