DOI: 10.1175/JCLI-D-11-00184.1
Scopus记录号: 2-s2.0-84860014017
论文题名: Monsoon regimes and processes in CCSM4. Part I: The Asian-Australian monsoon
作者: Meehl G.A. ; Arblaster J.M. ; Caron J.M. ; Annamalai H. ; Jochum M. ; Chakraborty A. ; Murtugudde R.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 8 起始页码: 2583
结束页码: 2608
语种: 英语
Scopus关键词: Annual variations
; Asia
; Australia
; Biennial oscillation
; Deep convection
; ENSO
; Indian ocean
; Inter-decadal variability
; Interannual variability
; Intraseasonal variability
; Madden-Julian oscillation
; Maritime Continent
; Model comparison
; Monsoons
; Orographic effects
; Pacific ocean
; Seasonal cycle
; Southern oscillation
; Topographic effects
; Tropical variabilty
; Walker circulation
; Atmospheric pressure
; Climate change
; Climate models
; Computer simulation
; Nickel compounds
; Oceanography
; Rain
; Tropics
; Atmospheric thermodynamics
; annual variation
; atmosphere-ocean coupling
; climate modeling
; comparative study
; decadal variation
; El Nino-Southern Oscillation
; Madden-Julian oscillation
; monsoon
; orographic effect
; sea surface temperature
; seasonal variation
; Southern Oscillation
; Walker circulation
; Asia
; Australia
; Bay of Bengal
; Indian Ocean
; Pacific Ocean
英文摘要: The simulation characteristics of theAsian-Australianmonsoon are documented for the Community Climate System Model, version 4 (CCSM4). This is the first part of a two part series examining monsoon regimes in the global tropics in theCCSM4.Comparisons aremade to anAtmosphericModel Intercomparison Project (AMIP) simulation of the atmospheric component in CCSM4 [Community Atmosphere Model, version 4, (CAM4)] to deduce differences in the monsoon simulations run with observed sea surface temperatures (SSTs) and with ocean-atmosphere coupling. These simulations are also compared to a previous version of the model (CCSM3) to evaluate progress. In general, monsoon rainfall is too heavy in the uncoupled AMIP run with CAM4, and monsoon rainfall amounts are generally better simulated with ocean coupling in CCSM4. Most aspects of the Asian-Australian monsoon simulations are improved in CCSM4 compared to CCSM3. There is a reduction of the systematic error of rainfall over the tropical Indian Ocean for the South Asian monsoon, and wellsimulated connections between SSTs in the Bay of Bengal and regional SouthAsianmonsoon precipitation. The pattern of rainfall in the Australian monsoon is closer to observations in part because of contributions from the improvements of the Indonesian Throughflow and diapycnal diffusion in CCSM4. Intraseasonal variability of the Asian-Australian monsoon is much improved in CCSM4 compared to CCSM3 both in terms of eastward and northward propagation characteristics, though it is still somewhat weaker than observed. An improved simulation of El Niño in CCSM4 contributes to more realistic connections between the Asian-Australian monsoon and El Niño-Southern Oscillation (ENSO), though there is considerable decadal and century time scale variability of the strength of the monsoon-ENSO connection. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52484
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: National Center for Atmospheric Research, Boulder, CO, United States; CAWCR, Bureau of Meteorology, Melbourne, VIC, Australia; University of Hawaii at Manoa, Honolulu, HI, United States; Centre for Atmospheric and Oceanic Sciences, Divecha Centre for Climate Change, Indian Institute of Science, Bangalore, India; University of Maryland, College Park, MD, United States
Recommended Citation:
Meehl G.A.,Arblaster J.M.,Caron J.M.,et al. Monsoon regimes and processes in CCSM4. Part I: The Asian-Australian monsoon[J]. Journal of Climate,2012-01-01,25(8)