DOI: 10.1002/grl.50560
论文题名: Close interactions between the Antarctic cyclone budget and large-scale atmospheric circulation
作者: Uotila P. ; Vihma T. ; Tsukernik M.
刊名: Geophysical Research Letters
ISSN: 0094-8864
EISSN: 1944-8595
出版年: 2013
卷: 40, 期: 12 起始页码: 3237
结束页码: 3241
语种: 英语
英文关键词: Antarctic
; cyclones
Scopus关键词: Antarctic
; Antarctic coasts
; Atmospheric circulation
; Atmospheric variability
; Cyclogenesis
; Semiannual oscillations
; Southern Annular Mode
; Southern ocean
; Atmospheric pressure
; Budget control
; Climatology
; Storms
; atmospheric circulation
; cyclogenesis
; cyclone
; El Nino-Southern Oscillation
; Southern Ocean
英文摘要: For the first time, we quantify relationships between the Southern Ocean cyclones and large-scale atmospheric variability indices: the Southern Annular Mode (SAM), the El Niño-Southern Oscillation (ENSO), the Zonal Wave 3 (ZW3) pattern, and the semiannual oscillation (SAO). Using the ERA-Interim 1979-2011 results, we identify cyclones south of 40°S and calculate monthly sectoral cyclone budgets of the Southern Ocean, defined as cyclogenesis minus cyclolysis plus net movement of cyclones into each sector. The SAM index has a strong connection with cyclones across all sectors. Positive SAM values are related to decreased eastward and increased southward movement of cyclones, resulting in higher cyclone densities along the Antarctic coast. The ENSO index shows strong associations with the cyclone behavior in the Amundsen-Ross Seas, whereas other regions are less sensitive to it. The ZW3 index has a stronger association with the meridional movement of cyclones than other indices. Key Points SAM values are related to movement of cyclones Meridional movement of cyclones mostly associated with ZW3 Impact of ENSO in the Amundsen-Ross Seas is comparable to that of SAM ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880551093&doi=10.1002%2fgrl.50560&partnerID=40&md5=69f29b104d28b849b5150a0dc3a11e1f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6128
Appears in Collections: 气候减缓与适应
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作者单位: Finnish Meteorological Institute, Helsinki, Finland
Recommended Citation:
Uotila P.,Vihma T.,Tsukernik M.. Close interactions between the Antarctic cyclone budget and large-scale atmospheric circulation[J]. Geophysical Research Letters,2013-01-01,40(12).