Evaluation of version 3.0B of the BEHR OMI NO2 product

Laughner, Joshua L.; Zhu, Qindan; Cohen, Ronald C.

Version 3.0B of the Berkeley High Resolution (BEHR) Ozone Monitoring Instrument (OMI) NO2 product is designed to accurately retrieve daily variation in the high-spatial-resolution mapping of tropospheric column NO2 over continental North America between 25 and 50∘ N. To assess the product, we compare against in situ aircraft profiles and Pandora vertical column densities (VCDs). We also compare the WRF-Chem simulation used to generate the a priori NO2 profiles against observations. We find that using daily NO2 profiles improves the VCDs retrieved in urban areas relative to low-resolution or monthly a priori NO2 profiles by amounts that are large compared to current uncertainties in NOx emissions and chemistry (of the order of 10 % to 30 %). Based on this analysis, we offer suggestions to consider when designing retrieval algorithms and validation procedures for upcoming geostationary satellites.

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Laughner, Joshua L. / Zhu, Qindan / Cohen, Ronald C.: Evaluation of version 3.0B of the BEHR OMI NO2 product. 2019. Copernicus Publications.

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Rechteinhaber: Joshua L. Laughner et al.

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