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For the topic, please choose on or more from the list:

  • water cycle, BGC, cryosphere, atmospheric model development, ocean/ice model development, land/energy model development, computing, infrastructure, software tools, E3SM evaluation, applied E3SM

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Poster TitleInvestigation of a New Dust Emission Scheme in E3SM
First AuthorYan Feng
Topicatmospheric model development
AffiliationNGD atmospheric physics
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Title

Investigation of a New Dust Emission Scheme in E3SM: High Latitude Dust

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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