DOI: 10.1175/JCLI-D-14-00103.1
Scopus记录号: 2-s2.0-84923025690
论文题名: Advanced two-moment bulk microphysics for global models. Part II: Global model solutions and aerosol-cloud interactions
作者: Gettelman A. ; Morrison H. ; Santos S. ; Bogenschutz P. ; Caldwell P.M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 3 起始页码: 1288
结束页码: 1307
语种: 英语
Scopus关键词: Climate models
; Climatology
; Aerosol emissions
; Aerosol-cloud interaction
; Anthropogenic aerosols
; Bulk microphysics
; Cloud condensation
; Cloud-resolving model simulations
; Horizontal resolution
; Liquid water paths
; Aerosols
; aerosol
; atmospheric modeling
; cloud condensation nucleus
; cloud microphysics
; ice crystal
; precipitation (climatology)
英文摘要: A modified microphysics scheme is implemented in the Community AtmosphereModel, version 5 (CAM5). The new scheme features prognostic precipitation. The coupling between the microphysics and the rest of the model is modified to make it more flexible. Single-column tests show the new microphysics can simulate a constrained drizzling stratocumulus case. Substepping the cloud condensation (macrophysics) within a time step improves single-column results. Simulations of mixed-phase cases are strongly sensitive to ice nucleation. The new microphysics alters process rates in both single-column and global simulations, even at low (200 km) horizontal resolution. Thus, prognostic precipitation can be important, even in low-resolution simulations where advection of precipitation is not important. Accretion dominates as liquid water path increases in agreement with cloud-resolving model simulations and estimates from observations. The new microphysics with prognostic precipitation increases the ratio of accretion over autoconversion. The change in process rates appears to significantly reduce aerosol-cloud interactions and indirect radiative effects of anthropogenic aerosols by up to 33% (depending on substepping) to below 1Wm-2 of cooling between simulations with preindustrial (1850) and present-day (2000) aerosol emissions. © 2015 American Meteorological Society. 资助项目: NASA, National Aeronautics and Space Administration
; NASA, National Aeronautics and Space Administration
; NASA, National Aeronautics and Space Administration
; NASA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50567
Appears in Collections: 气候变化事实与影响
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作者单位: National Center for Atmospheric Research, Boulder, CO, United States; Lawrence Livermore National Laboratory, Livermore, CA, United States
Recommended Citation:
Gettelman A.,Morrison H.,Santos S.,et al. Advanced two-moment bulk microphysics for global models. Part II: Global model solutions and aerosol-cloud interactions[J]. Journal of Climate,2015-01-01,28(3)