Articles | Volume 15, issue 19
Atmos. Chem. Phys., 15, 11217–11241, 2015
https://doi.org/10.5194/acp-15-11217-2015

Special issue: East Asia emissions assessment (EA2)

Atmos. Chem. Phys., 15, 11217–11241, 2015
https://doi.org/10.5194/acp-15-11217-2015
Research article
09 Oct 2015
Research article | 09 Oct 2015

Influence of aerosols and surface reflectance on satellite NO2 retrieval: seasonal and spatial characteristics and implications for NOx emission constraints

J.-T. Lin et al.

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Short summary
We conduct an improved OMI-based retrieval of tropospheric NO2 VCDs (POMINO) over China by explicitly accounting for aerosol optical effects and surface reflectance anisotropy. Compared to the traditional implicit aerosol treatment, an explicit treatment greatly lowers NO2 VCDs and subsequently estimated NOx emissions over eastern China, but with large spatiotemporal dependence. An explicit treatment also better captures high-pollution days. Effects of surface reflectance treatments are smaller.
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