DOI: 10.1002/2015GL066353
论文题名: Cloud regime evolution in the Indian monsoon intraseasonal oscillation: Connection to large-scale dynamical conditions and the atmospheric water budget
作者: Wang T. ; Wong S. ; Fetzer E.J.
刊名: Geophysical Research Letters
ISSN: 0094-8500
EISSN: 1944-8231
出版年: 2015
卷: 42, 期: 21 起始页码: 9465
结束页码: 9472
语种: 英语
英文关键词: cloud regimes
; deep convection
; Indian monsoon ISO
; large-scale dynamics
; moisture advection
; moisture convergence
Scopus关键词: Advection
; Atmospheric thermodynamics
; Budget control
; Clouds
; Moisture
; Natural convection
; Rain
; Deep convection
; Indian monsoon
; Large-scale dynamics
; Moisture advection
; Moisture convergence
; Tropical engineering
; advection
; cirrus
; climate oscillation
; cloud cover
; cumulus
; equatorial wave
; moisture transfer
; monsoon
; precipitation (climatology)
; seasonal variation
; water budget
; India
; Indian Ocean
英文摘要: We examine the intraseasonal oscillation (ISO) of the Indian summer monsoon to establish the connections of cloud regimes to large-scale dynamical states defined by dynamical convergence and moisture advection. Over the Indian subcontinent, the developing phase toward ISO peaks (rainfall maximum) is associated with positive anomalies of moisture advection leading in 4-6 days to positive anomalies of dynamical convergence, triggering abrupt transitions from shallow cumulus to deep convections in 1-2 days. The decaying phase toward ISO troughs (rainfall minima) is associated with negative anomalies of moisture advection and decreasing dynamical convergence, accompanying opposite transitions in cloud regimes. Due to northward propagation of anomalies, processes over the Indian Ocean are similar but lead those over the subcontinent by ~10 days. During the transitions cirrus clouds always accompany but lag deep convective clouds by ~10 days. Over the equatorial Indian Ocean cirrus clouds are modulated by equatorial waves. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955209801&doi=10.1002%2f2015GL066353&partnerID=40&md5=d4db20b1ddd5391cf31ad8b309ca030f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8116
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: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Recommended Citation:
Wang T.,Wong S.,Fetzer E.J.. Cloud regime evolution in the Indian monsoon intraseasonal oscillation: Connection to large-scale dynamical conditions and the atmospheric water budget[J]. Geophysical Research Letters,2015-01-01,42(21).