DOI: 10.1175/JCLI-D-11-00451.1
Scopus记录号: 2-s2.0-84861398947
论文题名: Projection of tropical cyclones on wavenumber-frequency-filtered equatorial waves
作者: Aiyyer A. ; Mekonnen A. ; Schreck C.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 10 起始页码: 3653
结束页码: 3658
语种: 英语
Scopus关键词: Decomposition methods
; Equatorial waves
; Global climate model simulations
; Kelvin waves
; Madden-Julian oscillation
; Outgoing longwave radiation
; Tropical cyclone
; Tropical depressions
; Tropical variabilty
; Wave amplitudes
; Western North Pacific
; Atmospherics
; Climatology
; Waves
; Hurricanes
; algorithm
; climate modeling
; climatology
; cyclogenesis
; equatorial wave
; frequency analysis
; Kelvin wave
; longwave radiation
; Madden-Julian oscillation
; Rossby wave
; tropical cyclone
; wave propagation
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: The impact of localized convection associated with tropical cyclones (TCs) on activity ascribed to equatorial waves is estimated. An algorithm is used to remove outgoing longwave radiation (OLR) signal in the vicinity of observed tropical cyclones, and equatorial wave modes are extracted using the standard wavenumber-frequency decomposition method. The results suggest that climatological activity of convection-coupled equatorial waves is overestimated where TC tracks are densest. The greatest impact is found for equatorial Rossby (ER)- and tropical depression (TD)-type waves followed by the Madden-Julian oscillation (MJO). The basins most affected are the eastern and western North Pacific Ocean where, on average, TCs may contribute up to 10%-15%of the climatological wave amplitude variance in these modes. In contrast, Kelvin waves are least impacted by the projection of TCs. The results are likely relevant for studies on the climatology of equatorial waves in observations and global climate model simulations and for those examining individual cases of TC genesis modulated by equatorial wave activity. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52404
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC, United States; Department of Energy and Environmental Systems, North Carolina A and T University, Greensboro, NC, United States; Cooperative Institute for Climate and Satellites, North Carolina State University, NOAA/National Climatic Data Center, Asheville, NC, United States
Recommended Citation:
Aiyyer A.,Mekonnen A.,Schreck C.J.. Projection of tropical cyclones on wavenumber-frequency-filtered equatorial waves[J]. Journal of Climate,2012-01-01,25(10)