DOI: 10.1002/joc.5835
Scopus记录号: 2-s2.0-85052886671
论文题名: A 30–35-year cycle period in cyclonic activity and rainfall regime for southeast Europe in 1948–2013 interval modulated by Atlantic Multidecadal Oscillation, North Atlantic Oscillation and Arctic Oscillation
作者: Cărbunaru D. ; Burcea S. ; Ştefănescu V.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
卷: 39, 期: 2 起始页码: 687
结束页码: 700
语种: 英语
英文关键词: correlation
; eigenvectors
; EOF
; geopotential fields
; large-scale oscillation
Scopus关键词: Atmospheric pressure
; Correlation methods
; Orthogonal functions
; Rain
; Time series analysis
; Atlantic multidecadal oscillations
; Different pressures
; Empirical Orthogonal Function
; Geopotentials
; Large scale oscillations
; North Atlantic oscillations
; South Eastern Europe
; Vertical oscillations
; Eigenvalues and eigenfunctions
; Arctic Oscillation
; Atlantic Multidecadal Oscillation
; climate change
; correlation
; empirical orthogonal function analysis
; geopotential
; North Atlantic Oscillation
; rainfall
; Europe
英文摘要: The main goal of this study was to investigate the cyclonic activity and rainfall regime for the southeastern Europe in relation with large-scale oscillations like Atlantic Multidecadal Oscillation (AMO), North Atlantic Oscillation (NAO) and Arctic Oscillation (AO), between 1948 and 2013. Using the empirical orthogonal functions (EOF) analysis, simultaneously applied to daily average geopotential field time series at four different pressure levels (200, 300, 500 and 850 hPa) during warm (April–September) seasons and over a synoptic spatial domain centred on Europe, the principal dynamic trait of the four mean geopotential fields was obtained. The analysis has shown that the first four eigenvectors describe about 81% of explained variance. The first eigenvector describes a positive relation between the upper and the lower geopotential fields in the western part of Europe and a negative relation in the southeastern part, in direct relation with the AMO. His projections evolution shows that, each year, the AMO phase modulates the changes in the geopotential fields from spring to summer and from summer to autumn. Positive AMO increases the summer period and negative AMO decreases it. NAO is being reflected in the second eigenvector, which describes a strong phase vertical oscillation of upper and lower geopotential field in northwestern Europe coupled with a smaller one in northeastern Europe in the first part of considered period and in both the second and third eigenvectors in the last part. The AO influence appears in the combination of the third and fourth eigenvectors in the middle part of the period. The combined dynamics of these four eigenvectors highlight a different dynamics of cyclonic activity and rainfall regime for Europe between 1948 and 1983, 1973 and 2006 and 1981 and 2013. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116593
Appears in Collections: 全球变化的国际研究计划
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作者单位: National Meteorological Administration, Bucharest, Romania
Recommended Citation:
Cărbunaru D.,Burcea S.,Ştefănescu V.. A 30–35-year cycle period in cyclonic activity and rainfall regime for southeast Europe in 1948–2013 interval modulated by Atlantic Multidecadal Oscillation, North Atlantic Oscillation and Arctic Oscillation[J]. International Journal of Climatology,2019-01-01,39(2)