Articles | Volume 16, issue 8
Atmos. Chem. Phys., 16, 5283–5298, 2016

Special issue: East Asia emissions assessment (EA2)

Special issue: Ten years of Ozone Monitoring Instrument (OMI) observations...

Atmos. Chem. Phys., 16, 5283–5298, 2016

Research article 28 Apr 2016

Research article | 28 Apr 2016

NOx lifetimes and emissions of cities and power plants in polluted background estimated by satellite observations

Fei Liu et al.

Data sets

Tropospheric NO2 TVCDs (DOMINO v2.0) Tropospheric Emission Monitoring Internet Service (TEMIS)

ERA-Interim wind reanalysis data European Centre for Medium-Range Weather Forecasts (ECMWF)

Emission data for US power plants United States Environmental Protection Agency, Emissions & Generation Resource Integrated Database (eGRID)

Emission data for Chinese cities Multi-resolution Emission Inventory for China (MEIC)

Emission data for US cities Joint Research Centre, Emission Database for Global Atmospheric Research (EDGAR)

Sounding measurements University of Wyoming, Department of Atmospheric Science

GTOPO30 elevation data US Geological Survey

Short summary
We present a new method to quantify NOx emissions and corresponding atmospheric lifetimes from OMI NO2 observations together with ECMWF wind fields without further model input for sources located in polluted background. The derived NOx emissions show generally good agreement with bottom-up inventories for power plants and cities. Global inventory significantly underestimated NOx emissions in Chinese cities, most likely due to uncertainties associated with downscaling approaches.
Final-revised paper