Influence of the North Atlantic Oscillation on winter rainfall in Calabria (southern Italy)

被引：60
作者：
Ferrari, E. [1 ]
Caloiero, T. [2 ]
Coscarelli, R. [3 ]
机构：
[1] Univ Calabria, Dept Soil Protect, I-87036 Cosenza, Italy
[2] CNR, Inst Agr & Forest Syst Mediterranean CNR ISAFOM, I-87036 Cosenza, Italy
[3] CNR, Res Inst Geohydrol Protect CNR IRPI, I-87036 Cosenza, Italy
来源：
THEORETICAL AND APPLIED CLIMATOLOGY | 2013年 / 114卷 / 3-4期
关键词：
SEASONAL RAINFALL; TREND ANALYSIS; CLIMATIC CATEGORIES; TIME-SERIES; PRECIPITATION; CIRCULATION; PROBABILITY; REGION; FLUCTUATIONS; TEMPERATURES;
D O I：
10.1007/s00704-013-0856-6
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
Seasonal rainfall amounts, directly responsible for availability of water resources on a specified area, are strongly dependent on the climate system. In order to highlight some features of such dependence, generally circulation indexes based on the difference in the sea level pressure between two geographic areas are taken into account. In the present study, the relationships between winter rainfall series observed in the Calabria region (southern Italy) and the North Atlantic Oscillation Index (NAOI) have been analysed. Firstly, a correlation analysis between precipitation and the NAOI was performed. Subsequently, the influence of the different phases of the NAO on the winter precipitation has been detected by a composite analysis, and by identifying changes in the behaviour of the probability density functions (gamma distribution) fitted on monthly rainfall. The results evidence a clear link existing between the phases of the climatic index and the amount of winter rainfall.
引用
收藏
页码：479 / 494
页数：16
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