Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 9, issue 2
Articles | Volume 9, issue 2
https://doi.org/10.5194/gmd-9-607-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/gmd-9-607-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 9, issue 2
Development and technical paper
 | 
12 Feb 2016
Development and technical paper |  | 12 Feb 2016

Quantifying the impact of sub-grid surface wind variability on sea salt and dust emissions in CAM5

Kai Zhang, Chun Zhao, Hui Wan, Yun Qian, Richard C. Easter, Steven J. Ghan, Koichi Sakaguchi, and Xiaohong Liu

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Short summary
A sub-grid treatment based on Weibull distribution is introduced to CAM5 to take into account the impact of unresolved variability of surface wind speed on sea salt and dust emissions. Simulations show that sub-grid wind variability has relatively small impacts on the global mean sea salt emissions, but considerable influence on dust emissions. Dry convective eddies and mesoscale flows associated with complex topography are the major causes of dust emission enhancement.
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