globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2017MS000963
Scopus记录号: 2-s2.0-85019584651
论文题名:
A simple model of intraseasonal oscillations
作者: Fuchs Ž; , Raymond D; J
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期:2
起始页码: 1195
结束页码: 1211
语种: 英语
英文关键词: Atmospheric humidity ; Budget control ; Mechanical waves ; Moisture ; Tropical engineering ; Tropics ; Atmospheric science ; Intraseasonal oscillations ; Moisture budget ; Moving components ; Propagating mode ; Rossby wave ; Tropospheric humidity ; WISHE-moisture mode ; Climatology ; atmospheric moisture ; humidity ; Madden-Julian oscillation ; planetary wave ; Rossby wave ; troposphere ; wave propagation ; wavelength
英文摘要: The intraseasonal oscillations and in particular the MJO have been and still remain a “holy grail” of today's atmospheric science research. Why does the MJO propagate eastward? What makes it unstable? What is the scaling for the MJO, i.e., why does it prefer long wavelengths or planetary wave numbers 1–3? What is the westward moving component of the intraseasonal oscillation? Though linear WISHE has long been discounted as a plausible model for intraseasonal oscillations and the MJO, the version we have developed explains many of the observed features of those phenomena, in particular, the preference for large zonal scale. In this model version, the moisture budget and the increase of precipitation with tropospheric humidity lead to a “moisture mode.” The destabilization of the large-scale moisture mode occurs via WISHE only and there is no need to postulate large-scale radiatively induced instability or negative effective gross moist stability. Our WISHE-moisture theory leads to a large-scale unstable eastward propagating mode in n = −1 case and a large-scale unstable westward propagating mode in n = 1 case. We suggest that the n = −1 case might be connected to the MJO and the observed westward moving disturbance to the observed equatorial Rossby mode. © 2017. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75785
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: Physics Department, Geophysical Research Center, New Mexico Tech, Socorro, NM, United States

Recommended Citation:
Fuchs Ž,, Raymond D,J. A simple model of intraseasonal oscillations[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(2)
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