DOI: 10.1175/JCLI-D-16-0789.1
Scopus记录号: 2-s2.0-85020055353
论文题名: Madden-Julian oscillation Pacific teleconnections: The impact of the basic state and MJO representation in general circulation models
作者: Henderson S.A. ; Maloney E.D. ; Son S.-W.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 12 起始页码: 4567
结束页码: 4587
语种: 英语
Scopus关键词: Atmospheric pressure
; Climate models
; Earth atmosphere
; Fighter aircraft
; Tropics
; Baroclinic models
; Coupled Model Intercomparison Project
; Extratropical circulation
; General circulation model
; Madden-Julian oscillation
; North Atlantic oscillations
; Teleconnection patterns
; Teleconnections
; Climatology
; air-sea interaction
; atmospheric circulation
; atmospheric general circulation model
; atmospheric structure
; climate modeling
; CMIP
; jet
; Madden-Julian oscillation
; teleconnection
; Pacific Ocean
英文摘要: Teleconnection patterns associated with the Madden-Julian oscillation (MJO) significantly alter extratropical circulations, impacting weather and climate phenomena such as blocking, monsoons, the North Atlantic Oscillation, and the Pacific-North American pattern. However, the MJO has been extremely difficult to simulate in many general circulation models (GCMs), and many GCMs contain large biases in the background flow, presenting challenges to the simulation of MJO teleconnection patterns and associated extratropical impacts. In this study, the database from phase 5 of the Coupled Model Intercomparison Project (CMIP5) is used to assess the impact of model MJO and basic state quality on MJO teleconnection pattern quality, and a simple dry linear baroclinic model is employed to understand the results. Even in GCMs assessed to have good MJOs, large biases in the MJO teleconnection patterns are produced as a result of errors in the zonal extent of the Pacific subtropical jet. The horizontal structure of Indo-Pacific MJO heating in good MJO models is found to have modest impacts on the teleconnection pattern skill, in agreement with previous studies that have demonstrated little sensitivity to the location of tropical heating near the subtropical jet. However, MJO heating east of the date line can alter the teleconnection pathways over North America. Results show that GCMs with poor basic states can have equally low skill in reproducing the MJO teleconnection patterns as GCMs with poor MJO quality, suggesting that both the basic state and the MJO must be well represented in order to reproduce the correct teleconnection patterns. © 2017 American Meteorological Society. 资助项目: NSF, National Science Foundation
; NOAA, National Oceanic and Atmospheric Administration
; NOAA, National Oceanic and Atmospheric Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48871
Appears in Collections: 气候变化与战略
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作者单位: Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea
Recommended Citation:
Henderson S.A.,Maloney E.D.,Son S.-W.. Madden-Julian oscillation Pacific teleconnections: The impact of the basic state and MJO representation in general circulation models[J]. Journal of Climate,2017-01-01,30(12)