DOI: 10.1175/JCLI-D-14-00213.1
Scopus记录号: 2-s2.0-84944128249
论文题名: An analysis of the environmental moisture impacts of western North Pacific tropical cyclones
作者: Schenkel B.A. ; Hart R.E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 7 起始页码: 2600
结束页码: 2622
语种: 英语
Scopus关键词: Budget control
; Climatology
; Hurricanes
; Mechanical waves
; Storms
; Tropics
; Troposphere
; Atmospheric environment
; Equatorial Rossby waves
; Hurricanes/typhoons
; Madden-Julian oscillation
; Moisture/moisture budgets
; Reanalysis
; Secondary circulation
; Storm environments
; Moisture
; climatology
; hurricane
; Madden-Julian oscillation
; moisture
; precipitable water
; Rossby wave
; tropical cyclone
; typhoon
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: The present study examines the environmental moisture anomalies present during western North Pacific tropical cyclone (TC) passage using storm-relative composites. Composited precipitable water anomalies reveal asymmetric anomalies with dry anomalies to the northwest and southwest of the TC and moist anomalies to the east of the TC. Precipitable water anomalies filtered in space and time suggest that the moisture anomalies in the northwest, southwest, and east regions (NWR, SWR, and ER, respectively) are partially due to the TC, while the anomalies in the SWR are also forced by a convectively suppressed Madden-Julian oscillation (MJO) and equatorial Rossby wave (ERW). Composited vertically integrated moisture budgets and backward parcel trajectories reveal that the moisture anomalies in the NWR, SWR, and ER are primarily due to the convergence of climatological mean moisture by the anomalous meridional wind. This convergence is induced by the secondary circulation of the TC in the NWR and ER and by inertial instability induced by the TC, MJO, and ERW in the SWR and ER as also suggested by prior work. Dry anomalies in the NWR are also forced by the advection of moisture by lower-tropospheric northerly wind anomalies associated with the primary circulation of the TC. Together with prior work, these results suggest that TCs can have significant impacts on their large-scale atmospheric environment extending well beyond the spatiotemporal scales of the lower-tropospheric cyclonic circulation of the TC. © 2015 American Meteorological Society. 资助项目: NSF, Norsk Sykepleierforbund
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50646
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric and Environmental Sciences, University at Albany, State University of New York, Albany, NY, United States; Department of Earth, Ocean and Atmospheric Science, The Florida State University, Tallahassee, FL, United States
Recommended Citation:
Schenkel B.A.,Hart R.E.. An analysis of the environmental moisture impacts of western North Pacific tropical cyclones[J]. Journal of Climate,2015-01-01,28(7)