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.

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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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