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Title
atmospheric model development
Authors
Yan Feng, Argonne National Laboratory; Douglas Hamilton and Natalie Mahowald, Cornell University
Abstract
One of the main improvements for dust physics in V3/V4 is to enable a close coupling between land and atmosphere for dust generation. In V1, dust emission is modelled based on the Dust Entrainment And Deposition model (DEAD), which requires a fixed soil erodibility map. We have recently updated it to include the brittle fragmentation theory of vertical dust flux on mineral size fractions during the V2 integration. In addition, dust aerosol absorption in the shortwave is improved by using observationally-based optical properties, resulting in a more negative aerosol forcing at TOA.
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