DOI: 10.1175/JCLI-D-12-00210.1
Scopus记录号: 2-s2.0-84877657867
论文题名: Modulation of western north pacific tropical cyclone activity by the ISO. Part I: Genesis and intensity
作者: Li R.C.Y. ; Zhou W.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 9 起始页码: 2904
结束页码: 2918
语种: 英语
Scopus关键词: Accumulated cyclone energies
; Intensity distribution
; Intraseasonal oscillations
; Intraseasonal variability
; Madden-Julian oscillation
; Propagation characteristics
; Significant differences
; Tropical cyclone activity
; Climate change
; Hurricanes
; Modulation
; Storms
; Tropical engineering
; cyclogenesis
; Madden-Julian oscillation
; monsoon
; precipitation intensity
; tropical cyclone
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: This study investigates the intraseasonal variability of tropical cyclones (TCs) by systematically examining the two major components of the intraseasonal oscillation (ISO), the 30-60-day Madden-Julian oscillation (MJO) and the 10-20-day quasi-biweekly oscillation (QBWO). Results suggest that these two ISO modes exhibit different origins, spatial scales, and propagation characteristics, which result in distinctive TC modulation in the western North Pacific Ocean (WNP). The northeastward-propagating MJO predominantly controls the basinwide TC frequency. The significant increase (reduction) in cyclogenesis in the convective (nonconvective) phase is found to be associated with the concomitant strengthening (weakening) of themonsoon trough. In addition, the large contrast in TC frequency also results in a significant difference in daily accumulated cyclone energy (ACE) between the convective and nonconvectiveMJOphases. The northwestward-propagating QBWO, in contrast, is characterized by alternating signals of positive and negative convection. It leads to the opposite TC modulation in the WNP1 (0°-30°N, 120°-150°E) and WNP2 (0°-30°N, 150°E-180°) regions and results in a northwestward shift in TC genesis locations, which in turn causes substantial differences in intensity distribution and daily ACE for differentQBWOphases. Finally, a brief examination of the dual mode situation suggests that the QBWO generally exerts modulation upon the background MJO, and the modulation seems to vary under different MJO conditions. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51898
Appears in Collections: 气候变化事实与影响
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作者单位: Guy Carpenter Asia-Pacific Climate Impact Center, School of Energy and Environment, City University of Hong Kong, Hong Kong
Recommended Citation:
Li R.C.Y.,Zhou W.. Modulation of western north pacific tropical cyclone activity by the ISO. Part I: Genesis and intensity[J]. Journal of Climate,2013-01-01,26(9)