DOI: 10.1002/2015GL064822
论文题名: Dynamic Potential Intensity: An improved representation of the ocean's impact on tropical cyclones
作者: Balaguru K. ; Foltz G.R. ; Leung L.R. ; Asaro E.D. ; Emanuel K.A. ; Liu H. ; Zedler S.E.
刊名: Geophysical Research Letters
ISSN: 0094-9341
EISSN: 1944-9072
出版年: 2015
卷: 42, 期: 16 起始页码: 6739
结束页码: 6746
语种: 英语
英文关键词: ocean stratification
; potential intensity
; sea surface temperature
; tropical cyclones
Scopus关键词: Atmospheric temperature
; Hurricanes
; Mixing
; Storms
; Submarine geophysics
; Surface properties
; Surface waters
; Tropics
; Dynamic potential
; Eastern pacific
; Northern Hemispheres
; Ocean stratification
; Potential intensity
; Sea surface temperature (SST)
; Stratified fluid
; Tropical cyclone
; Oceanography
; atmosphere-ocean coupling
; basin evolution
; Northern Hemisphere
; sea surface temperature
; storm
; stratification
; thermocline
; tropical cyclone
; turbulence
; turbulent mixing
; upper ocean
; Pacific Ocean
英文摘要: To incorporate the effects of tropical cyclone (TC)-induced upper ocean mixing and sea surface temperature (SST) cooling on TC intensification, a vertical average of temperature down to a fixed depth was proposed as a replacement for SST within the framework of air-sea coupled Potential Intensity (PI). However, the depth to which TC-induced mixing penetrates may vary substantially with ocean stratification and storm state. To account for these effects, here we develop a "Dynamic Potential Intensity" (DPI) based on considerations of stratified fluid turbulence. For the Argo period 2004-2013 and the three major TC basins of the Northern Hemisphere, we show that the DPI explains 11-32% of the variance in TC intensification, compared to 0-16% using previous methods. The improvement obtained using the DPI is particularly large in the eastern Pacific where the thermocline is shallow and ocean stratification effects are strong. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84941731322&doi=10.1002%2f2015GL064822&partnerID=40&md5=44b090bf8425351d4311174f4497648f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8956
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Marine Sciences Laboratory, Pacific Northwest National Laboratory, Seattle, WA, United States
Recommended Citation:
Balaguru K.,Foltz G.R.,Leung L.R.,et al. Dynamic Potential Intensity: An improved representation of the ocean's impact on tropical cyclones[J]. Geophysical Research Letters,2015-01-01,42(16).