Influence of the North Atlantic Oscillation (NAO) on climatic factors and estuarine water temperature on the Basque coast (Bay of Biscay): Comparative analysis of three seasonal NAO indices

被引：18

作者：

Aravena, Guillermo ^{[1
]}

Villate, Fernando ^{[1
]}

Iriarte, Arantza ^{[1
]}

Uriarte, Ibon ^{[2
]}

Ibanez, Berta ^{[3
,4
]}

机构：

[1] Univ Basque Country, Ecol Lab, Dept Plant Biol & Ecol, Fac Sci & Technol, Bilbao 48008, Spain

[2] Univ Basque Country, Ecol Lab, Dept Plant Biol & Ecol, Fac Pharm, Gasteiz 01006, Spain

[3] Basque Fdn Hlth Innovat & Res BIOEF, Sondika 48015, Spain

[4] CIBER Epidemiol & Pupl Hlth CIBERESP, Barcelona, Spain

来源：

CONTINENTAL SHELF RESEARCH | 2009年 / 29卷 / 04期

关键词：

North Atlantic Oscillation; Climate; Water temperature; Hydrology; Bay of Biscay; Estuaries; ENVIRONMENTAL-FACTORS; WINTER PRECIPITATION; VARIABILITY; PATTERNS; MODELS; SERIES; TIME; FLOW;

D O I：

10.1016/j.csr.2008.12.001

中图分类号：

P7 [海洋学];

学科分类号：

0707 ;

摘要：

The effect of the North Atlantic Oscillation (NAO) indices on climatic conditions and their subsequent influence oil water temperature of two Basque estuaries (estuary of Bilbao and estuary of Urdaibai) were assessed by transfer Function (TF) models for the period 1997-2006. Results showed that air tempetature had all immediate (lag = 0) and significant negative response to the NAO, whereas rainfall was not correlated with this climate index. The negative correlation between NAO and air temperature was found In he stronger with the seasonal indices derived from the differences in surface pressure between Iceland and Azores than with that derived from the principal component time-series of the leading eigenvector of the sea-level pressure in all Atlantic sector. The correlations between rainfall and rivet discharge, and between air temperature and water temperature were positive and highly significant in both estuaries. The response of water temperature to air temperature was immediate in both estuaries, whereas one-quarter lagged responses were also observed in the estuary of Bilbao, which is deeper and more stratified than the estuary of Urdaibai. Our Study provides evidence that on the Basque coast the NAO plays an important role in climate variations, which in turn affect estuarine water temperature. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：750 / 758

页数：9