DOI: 10.1002/2016GL070349
论文题名: Toward better assessment of tornado potential in typhoons: Significance of considering entrainment effects for CAPE
作者: Sueki K. ; Niino H.
刊名: Geophysical Research Letters
ISSN: 0094-8282
EISSN: 1944-8013
出版年: 2016
卷: 43, 期: 24 起始页码: 12597
结束页码: 12604
语种: 英语
英文关键词: CAPE
; entrainment
; tornadoes
; typhoons
Scopus关键词: Air entrainment
; Hurricanes
; Potential energy
; Storms
; CAPE
; Composite analysis
; Convective available potential energies
; Entrainment effects
; Helicities
; Midtroposphere
; Reanalysis
; Tornadoes
英文摘要: The characteristics of typhoons that spawned tornadoes (tornadic typhoons: TTs) in Japan from 1991 to 2013 were investigated by composite analysis using the Japanese 55 year Reanalysis and compared with those of typhoons that did not spawn tornadoes (nontornadic typhoons: NTs). We found that convective available potential energy (CAPE), which considers the effects of entrainment (entraining CAPE: E-CAPE), and storm-relative environmental helicity (SREH) are significantly large in the northeast quadrant of TTs where tornadoes frequently occur and that E-CAPE and SREH in that quadrant for TTs are larger than those for NTs. On the other hand, ordinary CAPE without entrainment does not account for the spatial distribution of tornado occurrences nor does it distinguish TTs from NTs. E-CAPE is sensitive to humidity in the midtroposphere; thus, it is effective for detecting a conditionally unstable layer up to about 550 hPa, which is distinctive of TTs. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007400910&doi=10.1002%2f2016GL070349&partnerID=40&md5=2f8632a1f31b994ea45f809bf1306147
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9245
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: Atmosphere and Ocean Research Institute, University of Tokyo, Chiba, Japan
Recommended Citation:
Sueki K.,Niino H.. Toward better assessment of tornado potential in typhoons: Significance of considering entrainment effects for CAPE[J]. Geophysical Research Letters,2016-01-01,43(24).