DOI: 10.1002/2016GL068498
论文题名: Does the Madden-Julian Oscillation modulate stratospheric gravity waves?
作者: Moss A.C. ; Wright C.J. ; Mitchell N.J.
刊名: Geophysical Research Letters
ISSN: 0094-9094
EISSN: 1944-8825
出版年: 2016
卷: 43, 期: 8 起始页码: 3973
结束页码: 3981
语种: 英语
英文关键词: Gravity Waves
; Madden-Julian Oscillation
Scopus关键词: Gravity waves
; Molecular physics
; Potential energy
; Tropics
; Troposphere
; Anticorrelation
; Global variability
; Intraseasonal variability
; Madden-Julian oscillation
; Propagating waves
; Relative phase
; Wind anomalies
; Zonal wind
; Climatology
; anomaly
; convective system
; gravity wave
; Madden-Julian oscillation
; potential energy
; stratosphere
; tropical region
; troposphere
; zonal wind
英文摘要: The circulation of the stratosphere is strongly influenced by the fluxes of gravity waves propagating from tropospheric sources. In the tropics, these gravity waves are primarily generated by convection. The Madden-Julian Oscillation (MJO) dominates the intraseasonal variability of this convection. However, the influence of the MJO on the variability of stratospheric gravity waves is largely unknown. Here we examine gravity wave potential energy at 26 km and the upper tropospheric zonal wind anomaly of the MJO at 200 hPa, sorted by the relative phase of the MJO using the Real Multivariate MJO indices. We show that a strong anticorrelation exists between gravity wave potential energy and the MJO eastward wind anomaly. We propose that this correlation is a result of the filtering of upward propagating waves by the MJO winds. The study provides the first observational evidence that the MJO contributes significantly to the global variability of stratospheric gravity waves in the tropics. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84992301256&doi=10.1002%2f2016GL068498&partnerID=40&md5=cfd32fe51dbf70b92406784f1a3f5178
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10057
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Centre for Space, Atmospheric and Oceanic Science, University of Bath, Bath, United Kingdom
Recommended Citation:
Moss A.C.,Wright C.J.,Mitchell N.J.. Does the Madden-Julian Oscillation modulate stratospheric gravity waves?[J]. Geophysical Research Letters,2016-01-01,43(8).