DOI: 10.1175/JCLI-D-12-00541.1
Scopus记录号: 2-s2.0-84878987485
论文题名: Mjo and convectively coupled equatorial waves simulated by CMIP5 climate models
作者: Hung M.P. ; Lin J. ; Wang W. ; Kim D. ; Shinoda T. ; Weaver S.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 17 起始页码: 6185
结束页码: 6214
语种: 英语
Scopus关键词: Coupled Model Intercomparison Project
; Diabatic heating
; Eastward propagation
; Equivalent depth
; Intergovernmental panel on climate changes
; Madden-Julian oscillation
; Static stability
; Tropical intraseasonal variability
; Climate change
; Climate models
; Computer simulation
; atmospheric circulation
; atmospheric dynamics
; climate change
; climate modeling
; equatorial wave
; Intergovernmental Panel on Climate Change
; Kelvin wave
; Madden-Julian oscillation
; precipitation (climatology)
; Rossby wave
; seasonal variation
英文摘要: This study evaluates the simulation of the Madden-Julian oscillation (MJO) and convectively coupled equatorial waves (CCEWs) in 20 models from the Coupled Model Intercomparison Project (CMIP) phase 5 (CMIP5) in the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report (AR5) and compares the results with the simulation of CMIP phase 3 (CMIP3) models in the IPCC Fourth Assessment Report (AR4). The results show that the CMIP5models exhibit an overall improvement over the CMIP3 models in the simulation of tropical intraseasonal variability, especially the MJO and several CCEWs. The CMIP5 models generally produce larger total intraseasonal (2-128 day) variance of precipitation than the CMIP3 models, as well as larger variances of Kelvin, equatorial Rossby (ER), and eastward inertio-gravity (EIG) waves. Nearly all models have signals of the CCEWs, with Kelvin and mixed Rossby-gravity (MRG) and EIG waves being especially prominent. The phase speeds, as scaled to equivalent depths, are close to the observed value in 10 of the 20 models, suggesting that these models produce sufficient reduction in their effective static stability by diabatic heating. The CMIP5 models generally produce larger MJO variance than the CMIP3 models, as well as a more realistic ratio between the variance of the eastward MJO and that of its westward counterpart. About one-third of the CMIP5 models generate the spectral peak of MJO precipitation between 30 and 70 days; however, the modelMJO period tends to be longer than observations as part of an overreddened spectrum, which in turn is associated with too strong persistence of equatorial precipitation. Only one of the 20 models is able to simulate a realistic eastward propagation of the MJO. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51693
Appears in Collections: 气候变化事实与影响
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作者单位: Climate Prediction Center, NOAA/NWS/NCEP, College Park, Maryland, and Wyle Information Systems LLC, McLean, VA, United States; Department of Geography, Ohio State University, Columbus, OH, United States; Climate Prediction Center, NOAA/NWS/NCEP, College Park, MD, United States; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Naval Research Laboratory, Stennis Space Center, Mississippi, and Department of Physical and Environmental Sciences, Texas A and M University-Corpus Christi, Corpus Christi, TX, United States
Recommended Citation:
Hung M.P.,Lin J.,Wang W.,et al. Mjo and convectively coupled equatorial waves simulated by CMIP5 climate models[J]. Journal of Climate,2013-01-01,26(17)