NAO impact on the summer moisture variability across Europe

被引：37

作者：

Mares, I

Mares, C

Mihailescu, M

机构：

[1] Natl Inst Meteorol & Hydrol, Bucharest 71552, Romania

[2] Univ Agr, Bucharest 71331, Romania

来源：

PHYSICS AND CHEMISTRY OF THE EARTH | 2002年 / 27卷 / 23-24期

关键词：

D O I：

10.1016/S1474-7065(02)00135-3

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The Palmer Drought Severity Index (PDSI) for the summer time over the 1891-1991 interval as it was calculated by Briffa et al. [Int. J. Climatol 14 (1994) 475-506] is considered. PDSI is analysed in this paper for six regions. As we expected the NAO signal is evident in wintertime, but its influence is not simultaneous in the same month-but with some lags. For instance, the best significant NAO signal has been obtained by considering the NAO in January as predictor and the drought index in Romania in January-March as predictand. For this pair the highest signal-to-noise ratio has been obtained. The following result is related to the influence of NAO in January on the precipitation behaviour in February-April. The other results emphasised PDSI responses at the NAO signal in the cold half of the year with several lag months delay. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1013 / 1017

页数：5

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