DOI: 10.1002/2016MS000676
Scopus记录号: 2-s2.0-84983268201
论文题名: Coupling spectral-bin cloud microphysics with the MOSAIC aerosol model in WRF-Chem: Methodology and results for marine stratocumulus clouds
作者: Gao W ; , Fan J ; , Easter R ; C ; , Yang Q ; , Zhao C ; , Ghan S ; J
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2016
卷: 8, 期: 3 起始页码: 1289
结束页码: 1309
语种: 英语
英文关键词: Aerosols
; Bins
; Chemical activation
; Clouds
; Weather forecasting
; Activation approaches
; Aerosol-cloud interaction
; Aircraft measurement
; Cloud microphysical properties
; Cloud microphysics
; Marine stratocumulus clouds
; Spectral bin cloud microphysics
; Weather Research and Forecast models
; Precipitation (meteorology)
; aerosol
; airborne survey
; climate modeling
; cloud microphysics
; coupling
; parameterization
; precipitation (climatology)
; resuspension
; stratocumulus
; weather forecasting
; Pacific Ocean
; Pacific Ocean (Southeast)
英文摘要: Aerosol-cloud interaction processes can be represented more physically with bin cloud microphysics relative to bulk microphysical parameterizations. However, due to computational power limitations in the past, bin cloud microphysics was often run with very simple aerosol treatments. The purpose of this study is to represent better aerosol-cloud interaction processes in the Chemistry version of Weather Research and Forecast model (WRF-Chem) at convection-permitting scales by coupling spectral-bin cloud microphysics (SBM) with the MOSAIC sectional aerosol model. A flexible interface is built that exchanges cloud and aerosol information between them. The interface contains a new bin aerosol activation approach, which replaces the treatments in the original SBM. It also includes the modified aerosol resuspension and in-cloud wet removal processes with the droplet loss tendencies and precipitation fluxes from SBM. The newly coupled system is evaluated for two marine stratocumulus cases over the Southeast Pacific Ocean with either a simplified aerosol setup or full-chemistry. We compare the aerosol activation process in the newly coupled SBM-MOSAIC against the SBM simulation without chemistry using a simplified aerosol setup, and the results show consistent activation rates. A longer time simulation reinforces that aerosol resuspension through cloud drop evaporation plays an important role in replenishing aerosols and impacts cloud and precipitation in marine stratocumulus clouds. Evaluation of the coupled SBM-MOSAIC with full-chemistry using aircraft measurements suggests that the new model works realistically for the marine stratocumulus clouds, and improves the simulation of cloud microphysical properties compared to a simulation using MOSAIC coupled with the Morrison two-moment microphysics. © 2016. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75887
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China; Pacific Northwest National Laboratory, Richland, WA, United States
Recommended Citation:
Gao W,, Fan J,, Easter R,et al. Coupling spectral-bin cloud microphysics with the MOSAIC aerosol model in WRF-Chem: Methodology and results for marine stratocumulus clouds[J]. Journal of Advances in Modeling Earth Systems,2016-01-01,8(3)