Berkeley High Resolution (BEHR) OMI NO2 - Gridded pixels, monthly profiles

The BEHR OMI NO2 product reprocesses tropospheric NO2 columns from the Ozone Monitoring Instrument (OMI) satellite using high resolution a priori NO2 profiles, surface reflectivity, and surface elevation data. This product uses NO2 profiles for the day retrieved, simulated by the WRF-Chem model at 12 km spatial resolution. The use of high spatial resolution NO2 profiles has been shown to better resolve urban/rural differences in NO2 column densities, and the use of day-to-day (rather than monthly average) profiles is especially important in applications that preferentially select observations upwind or downwind of a NOx source. However, given the computation cost of simulating daily, 12 km NO2 profiles over the continental US domain and accurately representing individual lightning events, we still provide a product using monthly average profiles.