Satellite-derived ground level NO2 concentrations, 2005-2019

<p>Ground level NO2 concentrations derived from OMI and TROPOMI satellite NO2 observations, as presented in Cooper et al 2021 (DOI: 10.1038/s41586-021-04229-0). NO2 column densities for the given year are determined using OMI observations, and downscaled to finer resolution using TROPOMI observations. Ground level concentrations are derived from downscaled column densities using the GEOS-Chem chemical transport model constrained with ground monitor observations following the method outlined in Cooper et al 2020 (https://doi.org/10.1088/1748-9326/aba3a5) and Cooper et al 2021.</p> <p>&nbsp;</p> <p>Annual mean data are provided at ~1x1 km2 resolution at satellite overpass time (~1:30 PM local). Datasets are in netcdf (.nc) format.</p> <p>&nbsp;</p>