DOI: 10.1002/grl.50522
论文题名: Variability of central United States April-May tornado day likelihood by phase of the Madden-Julian Oscillation
作者: Barrett B.S. ; Gensini V.A.
刊名: Geophysical Research Letters
ISSN: 0094-8936
EISSN: 1944-8667
出版年: 2013
卷: 40, 期: 11 起始页码: 2790
结束页码: 2795
语种: 英语
英文关键词: intraseasonal variability
; Madden-Julian Oscillation
; tornado
Scopus关键词: Convective available potential energies
; Environmental parameter
; Extended range
; Helicities
; Intraseasonal variability
; Madden-Julian oscillation
; Tropospheric circulation
; Vertical wind shear
; Climatology
; Tornadoes
; Madden-Julian oscillation
; potential energy
; seasonal variation
; spatiotemporal analysis
; tornado
; troposphere
; wind shear
; United States
英文摘要: April-May tornado day likelihood from 1990 to 2011 was calculated for the central United States for phases of the Madden-Julian Oscillation (MJO). An April tornado day was found more likely during MJO phases 6 and 8 and less likely during phases 3, 4, and 7. A May tornado day was found more likely during phases 5 and 8 and less likely in phases 2 and 3. During phases with above-normal tornado day likelihoods, positive anomalies of convective available potential energy, bulk vertical wind shear, and storm-relative helicity were found in the central United States. Negative anomalies were found during phases with below-normal tornado day likelihoods. Anomalies of such environmental parameters were connected to the MJO via variability in tropospheric circulation. These results provide an important starting point for extended range prediction of U.S. tornado activity. © 2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879967640&doi=10.1002%2fgrl.50522&partnerID=40&md5=d9c581dabb4557abf1c6fb455e85a149
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6200
Appears in Collections: 气候减缓与适应
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作者单位: Oceanography Department, U.S. Naval Academy, 572C Holloway Rd., Annapolis, MD 21402, United States
Recommended Citation:
Barrett B.S.,Gensini V.A.. Variability of central United States April-May tornado day likelihood by phase of the Madden-Julian Oscillation[J]. Geophysical Research Letters,2013-01-01,40(11).