Winter precipitation in Western Italian Alps (1926-2010)

被引：41

作者：

Terzago, S. ^{[1
]}

Fratianni, S. ^{[1
]}

Cremonini, R. ^{[2
]}

机构：

[1] Univ Turin, Dept Earth Sci, I-10125 Turin, Italy

[2] Reg Agcy Environm Protect ARPA Piemonte, I-10135 Turin, Italy

来源：

METEOROLOGY AND ATMOSPHERIC PHYSICS | 2013年 / 119卷 / 3-4期

关键词：

SINGULAR-SPECTRUM ANALYSIS; SNOW COVER; CLIMATE VARIABILITY; IBERIAN PENINSULA; EUROPEAN ALPS; TRENDS; SENSITIVITY; TEMPERATURES; REGION; SCALE;

D O I：

10.1007/s00703-012-0231-7

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

Six snow depth and total precipitation time series recorded in Western Italian Alps between 960 and 2,177 m a.s.l. have been analyzed to investigate variability and trends over the period 1926-2010. The results outline a significant decrease of snow depth in the period 1951-2010 ranging from -0.2 cm/year in the lowest station up to -1.4 cm/year in the highest one. The contribution to this negative trend comes mainly from spring. These results have been related to the changes in the amount/frequency of total precipitation and to the temperatures analyzed in former studies. The connections between winter precipitation and large-scale atmospheric forcings have been investigated by looking for regular oscillations embedded in the time series. Two different techniques have been used, the MultiTaperMethod and the Monte Carlo Singular Spectral Analysis. Both highlight oscillations corresponding to 2.4-2.7 year periods which are found to be driven by the North Atlantic Oscillation.

引用

页码：125 / 136

页数：12

共 53 条

[1] On the continuity and climatic variability of the meteorological stations in Torino, Asti, Vercelli and Oropa [J].