DOI: 10.1175/JCLI-D-15-0755.1
Scopus记录号: 2-s2.0-84977514156
论文题名: Does the summer arctic frontal zone influence arctic ocean cyclone activity?
作者: Crawford A.D. ; Serreze M.C.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 13 起始页码: 4977
结束页码: 4993
语种: 英语
Scopus关键词: Climate change
; Oceanography
; Arctic
; Cyclogenesis/cyclolysis
; Extratropical cyclones
; Geographic location
; Reanalysis
; Summer/warm season
; Storms
; air-sea interaction
; atmospheric circulation
; atmospheric front
; atmospheric modeling
; cyclogenesis
; storm track
; summer
; temperature gradient
; tropical cyclone
; Arctic Ocean
英文摘要: Extratropical cyclone activity over the central Arctic Ocean reaches its peak in summer. Previous research has argued for the existence of two external source regions for cyclones contributing to this summer maximum: the Eurasian continent interior and a narrow band of strong horizontal temperature gradients along the Arctic coastline known as the Arctic frontal zone (AFZ). This study incorporates data from an atmospheric reanalysis and an advanced cyclone detection and tracking algorithm to critically evaluate the relationship between the summer AFZ and cyclone activity in the central Arctic Ocean. Analysis of both individual cyclone tracks and seasonal fields of cyclone characteristics shows that the Arctic coast (and therefore the AFZ) is not a region of cyclogenesis. Rather, the AFZ acts as an intensification area for systems forming over Eurasia. As these systems migrate toward the Arctic Ocean, they experience greater deepening in situations when the AFZ is strong at midtropospheric levels. On a broader scale, intensity of the summer AFZ at midtropospheric levels has a positive correlation with cyclone intensity in the Arctic Ocean during summer, even when controlling for variability in the northern annular mode. Taken as a whole, these findings suggest that the summer AFZ can intensify cyclones that cross the coast into the Arctic Ocean, but focused modeling studies are needed to disentangle the relative importance of the AFZ, large-scale circulation patterns, and topographic controls. © 2016 American Meteorological Society. 资助项目: NSF, Norwegian Nurses Organisation
; NSF, Norwegian Nurses Organisation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50263
Appears in Collections: 气候变化事实与影响
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作者单位: Cooperative Institute for Research in Environmental Sciences, National Snow and Ice Data Center, Department of Geography, University of Colorado Boulder, Boulder, CO, United States
Recommended Citation:
Crawford A.D.,Serreze M.C.. Does the summer arctic frontal zone influence arctic ocean cyclone activity?[J]. Journal of Climate,2016-01-01,29(13)