DOI: 10.1002/2016MS000765
Scopus记录号: 2-s2.0-84995968692
论文题名: CGILS Phase 2 LES intercomparison of response of subtropical marine low cloud regimes to CO2 quadrupling and a CMIP3 composite forcing change
作者: Blossey P ; N ; , Bretherton C ; S ; , Cheng A ; , Endo S ; , Heus T ; , Lock A ; P ; , van der Dussen J ; J
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2016
卷: 8, 期: 4 起始页码: 1714
结束页码: 1726
语种: 英语
英文关键词: Boundary layers
; Carbon
; Carbon dioxide
; Clouds
; Large eddy simulation
; Precipitation (meteorology)
; Cloud feedbacks
; Cloud radiative effects
; Composite climate
; Equilibrium conditions
; Global climate model
; Marine boundary layer clouds
; Perturbation results
; Shallow cumulus clouds
; Climate models
; boundary layer
; carbon dioxide
; climate modeling
; cloud cover
; cloud radiative forcing
; global climate
; large eddy simulation
; marine environment
; precipitation (climatology)
; stratocumulus
; Pacific Ocean
; Pacific Ocean (Northeast)
英文摘要: Phase 1 of the CGILS large-eddy simulation (LES) intercomparison is extended to understand if subtropical marine boundary-layer clouds respond to idealized climate perturbations consistently in six LES models. Here the responses to quadrupled carbon dioxide (“fast adjustment”) and to a composite climate perturbation representative of CMIP3 multimodel mean 2×CO2 near-equilibrium conditions are analyzed. As in Phase 1, the LES is run to equilibrium using specified steady summertime forcings representative of three locations in the Northeast Pacific Ocean in shallow well-mixed stratocumulus, decoupled stratocumulus, and shallow cumulus cloud regimes. The results are generally consistent with a single-LES study of Bretherton et al. () on which this intercomparison was based. Both quadrupled CO2 and the composite climate perturbation result in less cloud and a shallower boundary layer for all models in well-mixed stratocumulus and for all but a single LES in decoupled stratocumulus and shallow cumulus, corroborating similar findings from global climate models (GCMs). For both perturbations, the amount of cloud reduction varies across the models, but there is less intermodel scatter than in GCMs. The cloud radiative effect changes are much larger in the stratocumulus-capped regimes than in the shallow cumulus regime, for which precipitation buffering may damp the cloud response. In the decoupled stratocumulus and cumulus regimes, both the CO2 increase and CMIP3 perturbations reduce boundary-layer decoupling, due to the shallowing of inversion height. © 2016. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75842
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: Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Science Systems and Applications, Inc., Hampton, VA, United States; Climate Science Branch, NASA Langley Research Center, Hampton, VA, United States; Brookhaven National Laboratory, Upton, NY, United States; Department of Physics, Cleveland State University, Cleveland, OH, United States; Met Office, Exeter, United Kingdom; Delft University of Technology, Delft, Netherlands
Recommended Citation:
Blossey P,N,, Bretherton C,et al. CGILS Phase 2 LES intercomparison of response of subtropical marine low cloud regimes to CO2 quadrupling and a CMIP3 composite forcing change[J]. Journal of Advances in Modeling Earth Systems,2016-01-01,8(4)