DOI: 10.1007/s00382-017-3749-z
Scopus记录号: 2-s2.0-85021124149
论文题名: The impact of stochastic parametrisations on the representation of the Asian summer monsoon
作者: Strømmen K. ; Christensen H.M. ; Berner J. ; Palmer T.N.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-05-06 起始页码: 2269
结束页码: 2282
语种: 英语
英文关键词: Asian monsoon
; Interannual variability
; Stochastic parametrisations
; Webster–Yang Index
Scopus关键词: annual variation
; climate modeling
; El Nino-Southern Oscillation
; Indian Ocean Dipole
; monsoon
; parameterization
; reaction kinetics
; stochasticity
; summer
; teleconnection
; wind shear
; Asia
英文摘要: The impact of the stochastic schemes Stochastically Perturbed Parametrisation Tendencies (SPPT) and Stochastic Kinetic Energy Backscatter Scheme (SKEBS) on the representation of interannual variability in the Asian summer monsoon is examined in the coupled climate model CCSM4. The Webster–Yang index, measuring anomalies of a specified wind-shear index in the monsoon region, is used as a metric for monsoon strength, and is used to analyse the output of three model integrations: one deterministic, one with SPPT, and one with SKEBS. Both schemes show improved variability, which we trace back to improvements in the El Niño-Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD). SPPT improves the representation of ENSO and through teleconnections thereby the monsoon, supporting previous work on the benefits of this scheme on the model climate. SKEBS also improves monsoon variability by way of improving the representation of the IOD, in particular by breaking an overly strong coupling to ENSO. © 2017, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109401
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Clarendon Laboratory, Physics Department, AOPP Building, Parks Road, Oxford, OX1 3PU, United Kingdom; NCAR, Boulder, CO 80307-3000, United States
Recommended Citation:
Strømmen K.,Christensen H.M.,Berner J.,et al. The impact of stochastic parametrisations on the representation of the Asian summer monsoon[J]. Climate Dynamics,2018-01-01,50(2018-05-06)