| DOI: | 10.1002/2014GL062301
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| 论文题名: | Free-tropospheric moisture convergence and tropical convective regimes |
| 作者: | Masunaga H.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9553
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| EISSN: | 1944-9284
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| 出版年: | 2014
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| 卷: | 41, 期:23 | | 起始页码: | 8611
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| 结束页码: | 8618
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| 语种: | 英语
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| 英文关键词: | tropical convection
; tropical dynamics
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| Scopus关键词: | Budget control
; Clouds
; Precipitation (meteorology)
; Time series analysis
; Tropical engineering
; Tropics
; Troposphere
; Moisture budget
; Moisture convergence
; Precipitation efficiency
; Satellite measurements
; Tropical atmospheres
; Tropical convection
; Tropical dynamics
; Tropospheric moisture
; Moisture
; atmospheric circulation
; atmospheric convection
; cumulus
; moisture content
; satellite imagery
; thermodynamics
; time series
; troposphere
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| 英文摘要: | This work searches for the key elements separating the dynamic and quiescent phases characterizing the tropical atmosphere. The analysis is performed with satellite measurements that are composited into statistical time series individually for the isolated cumulus and organized system regimes. Free-tropospheric (FT) moisture convergence, cloud-base (CB) moisture updraft, and FT precipitation efficiency (FTPE) are then derived under large-scale moisture budget constraints. Precipitation is fed primarily by FT moisture convergence while FTPE and CB moisture updraft amplify in tandem as organized systems develop. In the isolated cumulus regime, FT moisture remains weakly diverging over time accompanying little change of FTPE. A thermodynamic budget consideration suggests that organized systems develop under a self-sustaining growth of large-scale updraft in the dynamic phase, while the quiescent phase is maintained by stable, shallow circulation accompanying isolated cumuli. © 2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921554744&doi=10.1002%2f2014GL062301&partnerID=40&md5=90487189713d3d224f3f09c2241db6e0
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/6817
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Hydrospheric Atmospheric Research Center, Nagoya University, Nagoya, Japan
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| Recommended Citation: | |
Masunaga H.. Free-tropospheric moisture convergence and tropical convective regimes[J]. Geophysical Research Letters,2014-01-01,41(23).
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