Articles | Volume 21, issue 18
Atmos. Chem. Phys., 21, 13747–13761, 2021
https://doi.org/10.5194/acp-21-13747-2021
Atmos. Chem. Phys., 21, 13747–13761, 2021
https://doi.org/10.5194/acp-21-13747-2021
Research article
16 Sep 2021
Research article | 16 Sep 2021

A new inverse modeling approach for emission sources based on the DDM-3D and 3DVAR techniques: an application to air quality forecasts in the Beijing–Tianjin–Hebei region

Xinghong Cheng et al.

Data sets

NCEP FNL Operational Model Global Tropospheric Analyses, continuing from July 1999 National Center for Atmospheric Research https://doi.org/10.5065/D6M043C6

SO2, NO2, and O3 measurements China National Environmental Monitoring Centre (CNEMC) http://www.cnemc.cn/en/

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Short summary
We develop a new inversion method of emission sources based on sensitivity analysis and the three-dimension variational technique. The novel explicit observation operator matrix between emission sources and the receptor’s concentrations is established. Then this method is applied to a typical heavy haze episode in North China, and spatiotemporal variations of SO2, NO2, and O3 concentrations simulated using a posterior emission sources are compared with results using an a priori inventory.
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