OMI/Aura NO2 Total and Tropospheric Column Daily L2 Global Gridded 0.25 degree x 0.25 degree V3 Nickolay A. Krotkov, Lok N. Lamsal, Sergey V. Marchenko, Edward A. Celarier, Eric J.Bucsela, William H. Swartz, and Joanna Joiner https://doi.org/10.5067/Aura/OMI/DATA2018

AIRS NASA Jet Propulsion Laboratory airs.jpl.nasa.gov

Overview of the AIRS Mission: Instruments, Processing Algorithms, Products, and Documentation NASA Jet Propulsion Laboratory https://docserver.gesdisc.eosdis.nasa.gov/public/project/AIRS/Overview_of_the_AIRS _Mission.pdf

CAMS global reanalysis (EAC4) Copernicus Atmosphere Monitoring Service https://ads.atmosphere.copernicus.eu/cdsapp\#!/dataset/cams-global-reanalysis-eac4?tab=overvieware

CALIPSO Lidar Level 2 Aerosol Profile, V4-20 NASA Earth Data https://doi.org/10.5067/CALIOP/CALIPSO/LID\_L2\_05KMAPRO-STANDARD-V4-20

The ERA5 global reanalysis (https://cds.climate.copernicus.eu/cdsapp\#!/dataset/reanalysis-era5-single-levels?tab=overview) Hans Hersbach, Bill Bell, Paul Berrisford, Shoji Hirahara, András Horányi, Joaquín Muñoz-Sabater, Julien Nicolas, Carole Peubey, Raluca Radu, Dinand Schepers, Adrian Simmons, Cornel Soci, Saleh Abdalla, Xavier Abellan, Gianpaolo Balsamo, Peter Bechtold, Gionata Biavati, Jean Bidlot, Massimo Bonavita, Giovanna De Chiara, Per Dahlgren, Dick Dee, Michail Diamantakis, Rossana Dragani, Johannes Flemming, Richard Forbes, Manuel Fuentes, Alan Geer, Leo Haimberger, Sean Healy, Robin J. Hogan, Elías Hólm, Marta Janisková, Sarah Keeley, Patrick Laloyaux, Philippe Lopez, Cristina Lupu, Gabor Radnoti, Patricia de Rosnay, Iryna Rozum, Freja Vamborg, Sebastien Villaume, and Jean-Noël Thépaut https://doi.org/10.1002/qj.3803