DOI: 10.1002/grl.50308
论文题名: How systematic is organized tropical convection within the MJO?
作者: Dias J. ; Leroux S. ; Tulich S.N. ; Kiladis G.N.
刊名: Geophysical Research Letters
ISSN: 0094-9190
EISSN: 1944-8921
出版年: 2013
卷: 40, 期: 7 起始页码: 1420
结束页码: 1425
语种: 英语
英文关键词: convectively coupled wave
; Madden-Julian oscillation
; tropical dynamics
Scopus关键词: Convective envelope
; Coupled waves
; Madden-Julian oscillation
; Multi-scale structures
; Prediction and simulations
; Propagation direction
; Tropical convection
; Tropical dynamics
; Earth sciences
; Geophysics
; Spectrum analysis
; atmospheric convection
; equatorial wave
; Madden-Julian oscillation
; numerical model
; parameterization
; seasonal variation
; wave propagation
英文摘要: Recent theories of the dynamics of the Madden-Julian Oscillation (MJO) have been building on its multiscale structure. While it is observed that much of the convection within the MJO envelope is related to higher frequency equatorial waves, it is not known to what extent this organization is systematic from one MJO event to another. For instance, it is of interest to know whether MJO favors waves of particular types and propagation direction, and how this variability changes seasonally. This work presents a wavenumber-frequency spectral analysis of the MJO convective envelope, which indicates that there is no strong preferred scale of high frequency organization that is ubiquitous to the MJO. This null finding supports the use of convective parametrizations in modeling the MJO since, while moist convection is likely critical to its initiation and maintenance, the particular details of that organization may not be critical for its prediction and simulation. Key Points Documentation of convective organization within the MJO's convective envelope The MJO does not seem to favor certain specific convective equatorial waves This observational finding supports the use of convective parametrizations ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876943484&doi=10.1002%2fgrl.50308&partnerID=40&md5=8a80cbef07e2fb3032fcff883866b562
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6454
Appears in Collections: 气候减缓与适应
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作者单位: NOAA Earth System Research Laboratory, Physical Sciences Division, Boulder, CO, United States
Recommended Citation:
Dias J.,Leroux S.,Tulich S.N.,et al. How systematic is organized tropical convection within the MJO?[J]. Geophysical Research Letters,2013-01-01,40(7).