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 NO_x source. Given the computational cost of simulating daily 12 km resolution profiles over the continental US and the challenge of simulating individual lightning events accuractly, we still provide a product using monthly average NO₂ profiles.

The methods for the BEHR product are described in detail in Laughner et al. (in prep).