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Poster Title

Dust Life Cycle and Direct Radiative Effects in E3SMv1

Authors

Yan Feng, Hailong Wang, Richard Easter (Unlicensed),Wuyin Lin, Kai Zhang,Po-Lun Ma,Phil Rasch (pnl.gov), Shaocheng Xie, Jasper Kok, Natalie Mahowald, and Hongbin Yu

Session TypeE3SM session
Session IDE9
Submission Type'poster' or 'presentation'
GroupWater cycle
ExperimentWater cycle, BGC
Poster Link




Abstract

A recent study of CMIP5 models (Kok et al., 2018) shows the direct climate feedback by dust aerosols is about -0.04 to +0.02 Wm-2K-1, which accounts for a significant fraction of the direct climate feedback by all aerosols (-0.09 to -0.02 Wm-2K-1). In addition, dust is a major source of ice nuclei for aerosol indirect effects and supplies the key nutrients (iron/phosphorus) to the open ocean for ocean primary productivity. Therefore, quantification of dust life cycle and radiative effects in E3SMv1 has important implications on the water cycle and biogeochemical simulations in response to climate change. In the present work, we focused on evaluation of the simulated dust distributions and estimation of the dust direct radiative effects under the present-day conditions. The impact of increasing model resolution on dust simulations is also examined.

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