DOI: 10.1002/jgrd.50558
论文题名: Concurrent variation between the East Asian subtropical jet and polar front jet during persistent snowstorm period in 2008 winter over southern China
作者: Liao Z. ; Zhang Y.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 12 起始页码: 6360
结束页码: 6373
语种: 英语
英文关键词: concurrent variation
; polar front jet
; snowstorm
; subtropical jet
Scopus关键词: Oceanography
; concurrent variation
; Intensity variations
; Polar Front
; Possible mechanisms
; snowstorm
; Southern China
; Subtropical jet
; Tibetan Plateau
; Tropics
; cold air
; island
; jet stream
; polar front
; snowstorm
; subtropical region
; winter
; China
; Japan
; Qinghai-Xizang Plateau
英文摘要: The concurrent variation features between the East Asian subtropical jet and polar front jet were investigated during persistent snowstorm period in 2007/2008 winter over southern China. The East Asian subtropical jet was divided into two parts: (1) the plateau jet, located along the southern side of the Tibetan Plateau, and (2) the ocean jet, situated at the southeastern Japan Island. The concurrent intensity variation among the polar front jet, plateau jet, and ocean jet and the associated atmospheric anomalous signals were examined. A possible mechanism for concurrent variation among the three jets was also investigated from a perspective of synoptic-scale transient eddy activities (STEA). The enhanced plateau jet was simultaneously correlated with the weakened polar front jet, while the variation of the ocean jet lagged the variation of the plateau jet (polar front jet) about 5 days. The concurrent variation between the plateau jet and the polar front jet acted as an important bridge that linked the snowstorm to the atmospheric anomalous signals associated with the cold and warm air activities. Due to the opposite trends of STEA variation over the southern and northern sides of the Tibetan Plateau, the plateau jet and the polar front jet exhibited a significant concurrent variation feature. The STEA anomalies over the plateau jet and polar front jet regions propagated downstream to the East Asian coast as a wave train along the southern and northern sides of the Tibetan Plateau, respectively, resulting in a 5 day lag variation relationship between the ocean jet and the plateau jet (polar front jet). Key Points The enhanced plateau jet was correlated with the weakened polar front jet The concurrent variation of the jets can reflect the cold and warm air activity The concurrent variation of the jets can be attributed to the STEA variation © 2013. American Geophysical Union. All Rights Reserved. 资助项目: 41105044
; 41105045
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63641
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
There are no files associated with this item.
作者单位: School of Atmospheric Sciences, Nanjing University, Nanjing, 210093, China
Recommended Citation:
Liao Z.,Zhang Y.. Concurrent variation between the East Asian subtropical jet and polar front jet during persistent snowstorm period in 2008 winter over southern China[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(12)