DOI: 10.1002/2017MS000913
Scopus记录号: 2-s2.0-85019909724
论文题名: Changes in the structure and propagation of the MJO with increasing CO2
作者: Adames Á ; F ; , Kim D ; , Sobel A ; H ; , Del Genio A ; , Wu J
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期: 2 起始页码: 1251
结束页码: 1268
语种: 英语
英文关键词: Carbon
; Carbon dioxide
; Climate models
; Climatology
; Moisture
; Rain
; Regression analysis
; Spectrum analysis
; Eastward propagation
; Global climate model
; Madden-Julian oscillation
; Mean state
; Mixed layer ocean models
; Pre-industrial levels
; Rainfall variability
; Variability
; Climate change
; anomaly
; carbon dioxide
; carbon dioxide enrichment
; climate change
; climate modeling
; concentration (composition)
; global climate
; Madden-Julian oscillation
; moisture
; rainfall
; regression analysis
; spectral analysis
; water vapor
英文摘要: Changes in the Madden-Julian Oscillation (MJO) with increasing CO2 concentrations are examined using the Goddard Institute for Space Studies Global Climate Model (GCM). Four simulations performed with fixed CO2 concentrations of 0.5, 1, 2, and 4 times preindustrial levels using the GCM coupled with a mixed layer ocean model are analyzed in terms of the basic state, rainfall, moisture and zonal wind variability, and the structure and propagation of the MJO. The GCM simulates basic state changes associated with increasing CO2 that are consistent with results from earlier studies: column water vapor increases at ∼7.1% K−1, precipitation also increases but at a lower rate (∼3% K−1), and column relative humidity shows little change. Moisture and rainfall variability intensify with warming while zonal wind variability shows little change. Total moisture and rainfall variability increases at a rate this is similar to that of the mean state change. The intensification is faster in the MJO-related anomalies than in the total anomalies, though the ratio of the MJO band variability to its westward counterpart increases at a much slower rate. On the basis of linear regression analysis and space-time spectral analysis, it is found that the MJO exhibits faster eastward propagation, faster westward energy dispersion, a larger zonal scale, and deeper vertical structure in warmer climates. © 2017. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75783
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: Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Department of Applied Physics and Applied Mathematics, and Department of Earth and Environmental Sciences, and Lamont-Doherty Earth Observatory, Columbia University, New York, NY, United States; NASA Goddard Institute for Space Studies, New York, NY, United States
Recommended Citation:
Adames Á,F,, Kim D,et al. Changes in the structure and propagation of the MJO with increasing CO2[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(2)