𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Trends of precipitation over the Iberian Peninsula and the North Atlantic Oscillation under climate change conditions

✍ Scribed by Concepción Rodríguez-Puebla; Susana Nieto

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
621 KB
Volume
30
Category
Article
ISSN
0899-8418

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The trends of precipitation over the Iberian Peninsula (IP) and the North Atlantic Oscillation (NAO) index from December to March are compared using observations and model simulations from the Coupled Model Intercomparison Project phase 3 (CMIP3). The evaluation is performed in two multi‐models as derived by averaging simulations corresponding to two experiments: one represents climate in the 20th century (20C3M) and the other the scenario with medium forcing IPCC SRES A1B in the 21st century. The NAO index shows a trend to more positive phases and precipitation tends to decrease in the case of observations, with greater significance in the NAO than in precipitation. The simulations in the 20th century underestimate the trend both in the NAO and in precipitation compared to observations. The multi‐model in the 21st century indicates a change in the NAO regimes to being more positive; this leads to a reduction of precipitation over the IP. To explain the precipitation trend changes we consider the response of precipitation to the NAO, the regression between sea level pressure (SLP) over the Euro‐Atlantic area onto precipitation averaged over the IP and the composite of precipitation for years with greater and lower NAO. Copyright © 2009 Royal Meteorological Society

📜 SIMILAR VOLUMES

North Atlantic oscillation influence on
North Atlantic oscillation influence on precipitation, river flow and water resources in the Iberian Peninsula
✍ Ricardo M. Trigo; David Pozo-Vázquez; Timothy J. Osborn; Yolanda Castro-Díez; So 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 852 KB

## Abstract The Iberian Peninsula precipitation and river flow regimes are characterized by large values of inter‐annual variability, with large disparities between wet and dry years, especially in southern Iberia. This situation is a major problem for water resources management in general, and for

Precipitation and the North Atlantic Osc
Precipitation and the North Atlantic Oscillation: a study of climatic variability in northern England
✍ H. J. Fowler; C. G. Kilsby 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 256 KB

## Abstract Variations in precipitation in Yorkshire, UK, are linked to large‐scale atmospheric circulation using the North Atlantic Oscillation (NAO) index, objective Lamb weather types, and long‐term seasonal and annual precipitation indices at seven sites. Since the 1960s, a significant decrease

Long-term hydrological changes of the Se
Long-term hydrological changes of the Seine River flow (France) and their relation to the North Atlantic Oscillation over the period 1950–2008
✍ Nicolas Massei; Benoit Laignel; Julien Deloffre; Johanna Mesquita; Anne Motelay; 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 502 KB

## Abstract The variability of Seine River flow (France) was investigated using daily time series over the period of 1950–2008. The study aimed at characterizing the dominant modes explaining the variability of flow and at investigating their possible link with the North Atlantic Oscillation (NAO)