Winter precipitation over the Iberian peninsula and its relationship to circulation indices
International audience Winter precipitation variability over the Iberian peninsula was investigated by obtaining the spatial and temporal patterns. Empirical Orthogonal Functions were used to describe the variance distribution and to compress the precipitation data into a few modes. The correspondin...
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ftccsdartic:oai:HAL:hal-00304599v1 2023-05-15T17:29:54+02:00 Winter precipitation over the Iberian peninsula and its relationship to circulation indices Rodríguez-Puebla, C. Encinas, A. H. SÁenz, J. Departamento de Física General y de la Atmósfera Salamanca Universidad de Salamanca Dept. de Matemática Aplicada Dept. de Física Aplicada II 2001 https://hal.archives-ouvertes.fr/hal-00304599 https://hal.archives-ouvertes.fr/hal-00304599/document https://hal.archives-ouvertes.fr/hal-00304599/file/hess-5-233-2001.pdf en eng HAL CCSD European Geosciences Union hal-00304599 https://hal.archives-ouvertes.fr/hal-00304599 https://hal.archives-ouvertes.fr/hal-00304599/document https://hal.archives-ouvertes.fr/hal-00304599/file/hess-5-233-2001.pdf info:eu-repo/semantics/OpenAccess ISSN: 1812-2108 EISSN: 1812-2116 Hydrology and Earth System Sciences Discussions https://hal.archives-ouvertes.fr/hal-00304599 Hydrology and Earth System Sciences Discussions, European Geosciences Union, 2001, 5 (2), pp.233-244 [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2001 ftccsdartic 2021-12-05T03:58:15Z International audience Winter precipitation variability over the Iberian peninsula was investigated by obtaining the spatial and temporal patterns. Empirical Orthogonal Functions were used to describe the variance distribution and to compress the precipitation data into a few modes. The corresponding spatial patterns divide the peninsula into climatic regions according to precipitation variations. The associated time series were related to large scale circulation indices and tropical sea surface temperature anomalies by using lag cross-correlation and cross-spectrum. The major findings are: the most influential indices for winter precipitation were the North Atlantic Oscillation and the East Atlantic/West Russian pattern; coherent oscillations were detected at about eight years between precipitation and the North Atlantic Oscillation and some dynamic consequences of the circulation on precipitation over the Iberian peninsula were examined during drought and wet spells. In the end statistical methods have been proposed to downscale seasonal precipitation prediction. Keywords: Winter precipitation, circulation indices, Iberian peninsula climate, climate variations, precipitation trend Article in Journal/Newspaper North Atlantic North Atlantic oscillation Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Rodríguez-Puebla, C. Encinas, A. H. SÁenz, J. Winter precipitation over the Iberian peninsula and its relationship to circulation indices |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience Winter precipitation variability over the Iberian peninsula was investigated by obtaining the spatial and temporal patterns. Empirical Orthogonal Functions were used to describe the variance distribution and to compress the precipitation data into a few modes. The corresponding spatial patterns divide the peninsula into climatic regions according to precipitation variations. The associated time series were related to large scale circulation indices and tropical sea surface temperature anomalies by using lag cross-correlation and cross-spectrum. The major findings are: the most influential indices for winter precipitation were the North Atlantic Oscillation and the East Atlantic/West Russian pattern; coherent oscillations were detected at about eight years between precipitation and the North Atlantic Oscillation and some dynamic consequences of the circulation on precipitation over the Iberian peninsula were examined during drought and wet spells. In the end statistical methods have been proposed to downscale seasonal precipitation prediction. Keywords: Winter precipitation, circulation indices, Iberian peninsula climate, climate variations, precipitation trend |
author2 |
Departamento de Física General y de la Atmósfera Salamanca Universidad de Salamanca Dept. de Matemática Aplicada Dept. de Física Aplicada II |
format |
Article in Journal/Newspaper |
author |
Rodríguez-Puebla, C. Encinas, A. H. SÁenz, J. |
author_facet |
Rodríguez-Puebla, C. Encinas, A. H. SÁenz, J. |
author_sort |
Rodríguez-Puebla, C. |
title |
Winter precipitation over the Iberian peninsula and its relationship to circulation indices |
title_short |
Winter precipitation over the Iberian peninsula and its relationship to circulation indices |
title_full |
Winter precipitation over the Iberian peninsula and its relationship to circulation indices |
title_fullStr |
Winter precipitation over the Iberian peninsula and its relationship to circulation indices |
title_full_unstemmed |
Winter precipitation over the Iberian peninsula and its relationship to circulation indices |
title_sort |
winter precipitation over the iberian peninsula and its relationship to circulation indices |
publisher |
HAL CCSD |
publishDate |
2001 |
url |
https://hal.archives-ouvertes.fr/hal-00304599 https://hal.archives-ouvertes.fr/hal-00304599/document https://hal.archives-ouvertes.fr/hal-00304599/file/hess-5-233-2001.pdf |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 1812-2108 EISSN: 1812-2116 Hydrology and Earth System Sciences Discussions https://hal.archives-ouvertes.fr/hal-00304599 Hydrology and Earth System Sciences Discussions, European Geosciences Union, 2001, 5 (2), pp.233-244 |
op_relation |
hal-00304599 https://hal.archives-ouvertes.fr/hal-00304599 https://hal.archives-ouvertes.fr/hal-00304599/document https://hal.archives-ouvertes.fr/hal-00304599/file/hess-5-233-2001.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766125145659801600 |