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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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AMT | Articles | Volume 11, issue 7
Atmos. Meas. Tech., 11, 3955–3967, 2018
https://doi.org/10.5194/amt-11-3955-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Meas. Tech., 11, 3955–3967, 2018
https://doi.org/10.5194/amt-11-3955-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 06 Jul 2018

Research article | 06 Jul 2018

Comparing OMI-based and EPA AQS in situ NO2 trends: towards understanding surface NOx emission changes

Ruixiong Zhang et al.
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This study focuses on how to improve OMI NO2 retrievals for trend analysis. We retrieve OMI tropospheric NO2 vertical column densities (VCDs) and obtain the NO2 seasonal trends over the United States, which are compared with coincident in situ surface NO2 measurements from the Air Quality System network. We find that three procedures are essential in comparing both datasets, including the ocean trend removal, the albedo update, and the lightning filter.
This study focuses on how to improve OMI NO2 retrievals for trend analysis. We retrieve OMI...
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