DOI: 10.1002/joc.5332
论文题名: Intensified impact of North Atlantic Oscillation in May on subsequent July Asian inland plateau precipitation since the late 1970s
作者: Piao J. ; Chen W. ; Chen S. ; Wei K.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 5 起始页码: 2605
结束页码: 2612
语种: 英语
英文关键词: Asian inland plateau
; July precipitation
; North Atlantic Oscillation
; Polar–Eurasia pattern
Scopus关键词: Atmospheric pressure
; Asian inland plateau
; Circumpolar vortex
; Dipole patterns
; Eurasia
; Geopotential height anomalies
; North Atlantic oscillations
; Northern Hemispheres
; Precipitation relationships
; Oceanography
英文摘要: The relationship between the North Atlantic Oscillation (NAO) in May and precipitation in the Asian inland plateau (AIP) in following July has experienced a significant enhancement since the late 1970s. This study investigates the factors for this inter-decadal change of the NAO–AIP precipitation connection. Before the late 1970s, geopotential height anomalies related to the May NAO exhibited a dipole pattern confined to the North Atlantic from May to June and decayed in July. As a result, the impact of the May NAO on the AIP precipitation in July is weak. In contrast, after the late 1970s, geopotential height anomalies associated with the May NAO persisted into July. The analysis in this study finds that the May NAO influences July AIP precipitation via modulating the Polar–Eurasia teleconnection (POL). After (before) the late 1970s, the connection between the May NAO and the POL was strong (weak), explaining the inter-decadal change in the May NAO–July AIP precipitation relationship. Further analysis suggests that the strengthening of the relationship between the May NAO pattern and the July POL after the late 1970s may be attributed to the inter-decadal contraction of the Northern Hemisphere circumpolar vortex. © 2017 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116948
Appears in Collections: 气候减缓与适应
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作者单位: Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; School of Earth Science, University of the Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Piao J.,Chen W.,Chen S.,et al. Intensified impact of North Atlantic Oscillation in May on subsequent July Asian inland plateau precipitation since the late 1970s[J]. International Journal of Climatology,2018-01-01,38(5)