An adjoint model is used for inverse modeling of black carbon during the Asian Pacific Regional Aerosol Characterization Experiment (ACE-Asia). We use the fourdimensional variational data assimilation (4D-Var) approach to optimally recover spatially resolved anthropogenic and biomass-burning emissions and initial and boundary conditions of black carbon. Boundary conditions and biomass-burning emissions are assigned daily scaling factors. Anthropogenic emissions are scaled by a combination of daily and mon…
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