DOI: 10.1175/JCLI-D-16-0112.1
Scopus记录号: 2-s2.0-84994157544
论文题名: Influence of oceanic intraseasonal Kelvin waves on eastern Pacific hurricane activity
作者: Boucharel J. ; Jin F.-F. ; England M.H. ; Dewitte B. ; Lin I.I. ; Huang H.-C. ; Balmaseda M.A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 22 起始页码: 7941
结束页码: 7955
语种: 英语
Scopus关键词: Atmospheric pressure
; Climatology
; Dynamics
; Gravity waves
; Locks (fasteners)
; Oceanography
; Storms
; Time measurement
; Intraseasonal variability
; Ocean dynamics
; Seasonal forecasting
; Seasonal variability
; Tropical variability
; Hurricanes
英文摘要: Recent studies have highlighted the role of subsurface ocean dynamics in modulating eastern Pacific (EPac) hurricane activity on interannual time scales. In particular, the well-known El Niño-Southern Oscillation (ENSO) recharge-discharge mechanism has been suggested to provide a good understanding of the year-to-year variability of hurricane activity in this region. This paper investigates the influence of equatorial subsurface subannual and intraseasonal oceanic variability on tropical cyclone (TC) activity in the EPac. That is to say, it examines previously unexplored time scales, shorter than interannual, in an attempt to explain the variability not related to ENSO. Using ocean reanalysis products and TC best-track archive, the role of subannual and intraseasonal equatorial Kelvin waves (EKW) in modulating hurricane intensity in the EPac is examined. It is shown first that these planetary waves have a clear control on the subannual and intraseasonal variability of thermocline depth in the EPac cyclone-active region. This is found to affect ocean subsurface temperature, which in turn fuels hurricane intensification with a marked seasonal-phase locking. This mechanism of TC fueling, which explains up to 30% of the variability of TC activity unrelated to ENSO (around 15%-20% of the total variability), is embedded in the large-scale equatorial dynamics and therefore offers some predictability with lead time up to 3-4 months at seasonal and subseasonal time scales. © 2016 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50061
Appears in Collections: 气候变化事实与影响
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作者单位: ARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney, NSW, Australia; Department of Atmospheric Sciences, SOEST, University of Hawai'i at Manoa, Honolulu, HI, United States; Laboratory for Climate Studies, Beijing Climate Center, Chinese Meteorological Agency, Beijing, China; IRD/LEGOS/UPS, Toulouse, France; Department of Atmospheric Sciences, National Taiwan University, Taipei, Taiwan; European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom
Recommended Citation:
Boucharel J.,Jin F.-F.,England M.H.,et al. Influence of oceanic intraseasonal Kelvin waves on eastern Pacific hurricane activity[J]. Journal of Climate,2016-01-01,29(22)