DOI: 10.1002/2014GL061584
论文题名: Slow translation speed causes rapid collapse of northeast Pacific Hurricane Kenneth over cold core eddy
作者: Walker N.D. ; Leben R.R. ; Pilley C.T. ; Shannon M. ; Herndon D.C. ; Pun I.-F. ; Lin I.-I. ; Gentemann C.L.
刊名: Geophysical Research Letters
ISSN: 0094-9649
EISSN: 1944-9380
出版年: 2014
卷: 41, 期: 21 起始页码: 7595
结束页码: 7601
语种: 英语
英文关键词: air-sea interactions
; eddies and mesoscale processes
; enthalpy flux
; microwave SST
; satellite altimetry
; tropical cyclones and hurricanes
Scopus关键词: Atmospheric temperature
; Enthalpy
; Hurricanes
; Storms
; Surface waters
; Air sea interactions
; Enthalpy fluxes
; Mesoscale process
; Satellite altimetry
; Tropical cyclone
; Oceanography
; collapse
; eddy
; energy flux
; estimation method
; hurricane
; mixed layer
; sea surface temperature
; tropical cyclone
; upper ocean
; wind shear
; Hawaii [United States]
; United States
英文摘要: Category 4 Hurricane Kenneth (HK) experienced unpredicted rapid weakening when it stalled over a cold core eddy (CCE) on 19-20 September 2005, 2800 km SE of Hawaii. Maximum sea surface temperature (SST) cooling of 8-9°C and a minimum aerially averaged SST of 18.3°C (over 8750 km2) characterized its cool wake. A 3-D mixed-layer model enabled estimation of enthalpy fluxes (latent and sensible heat), as well as the relative importance of slow translation speed (Uh ) compared with the preexisting CCE. As Uh dropped below 1.5 m s-1, enthalpy fluxes became negative, cutting off direct ocean energy flux to HK. Although HK's weakening was attributed to wind shear, our results indicate that slow Uh and consequent intense SST cooling were the main causes. The tropical cyclone-intensified CCE experienced rapid growth in magnitude (-6 to -40 cm), increased diameter (60 to 350 km), elevated chlorophyll a for 4 months, and 12 month longevity. Key Points Slow translation speed caused hurricane collapseCold core eddy contributed to collapseHurricane produced long-lived changes to upper ocean ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912118629&doi=10.1002%2f2014GL061584&partnerID=40&md5=6b89608a951df535ad834abb2a7d9c93
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6913
Appears in Collections: 气候减缓与适应
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作者单位: Department of Oceanography and Coastal Sciences, Coastal Studies Institute, Louisiana State University and A. and M. C., Baton Rouge, LA, United States
Recommended Citation:
Walker N.D.,Leben R.R.,Pilley C.T.,et al. Slow translation speed causes rapid collapse of northeast Pacific Hurricane Kenneth over cold core eddy[J]. Geophysical Research Letters,2014-01-01,41(21).