North Atlantic oscillation influence and weather types associated with winter total and extreme precipitation events in Spain
An analysis of winter intensity and frequency of precipitation is presented, based on 102 daily precipitation stations over Spain and the Balearic Islands for the 1997-2006 decade. Precipitation stations have been merged in the eight different regions which compose the analyzed area by the use of an...
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Language: | English |
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Elsevier Science INC
2009
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Online Access: | https://eprints.ucm.es/id/eprint/24432/ https://eprints.ucm.es/id/eprint/24432/1/barriopedro15.pdf https://doi.org/10.1016/j.atmosres.2009.09.005 |
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ftunivcmadrid:oai:www.ucm.es:24432 2023-05-15T17:35:02+02:00 North Atlantic oscillation influence and weather types associated with winter total and extreme precipitation events in Spain Queralt, S. Barriopedro Cepero, David Hernández, E. Gallego, D. Ribera, P. Casanova, C. 2009-12 application/pdf https://eprints.ucm.es/id/eprint/24432/ https://eprints.ucm.es/id/eprint/24432/1/barriopedro15.pdf https://doi.org/10.1016/j.atmosres.2009.09.005 en eng Elsevier Science INC https://eprints.ucm.es/id/eprint/24432/1/barriopedro15.pdf info:eu-repo/semantics/restrictedAccess Astrofísica Astronomía Física atmosférica info:eu-repo/semantics/article PeerReviewed 2009 ftunivcmadrid https://doi.org/10.1016/j.atmosres.2009.09.005 2022-05-12T19:56:04Z An analysis of winter intensity and frequency of precipitation is presented, based on 102 daily precipitation stations over Spain and the Balearic Islands for the 1997-2006 decade. Precipitation stations have been merged in the eight different regions which compose the analyzed area by the use of an EOF analysis. NAO influence on the intensity and frequency of precipitation of each region is described in terms of mean precipitation, mean rain frequency, the number of extreme events, changes in the precipitation distribution and the prevalent synoptic configuration. Results indicate a non-stationary response; NAO signal being more evident in mid-late winter. Strong regional differences in the response to NAO are also found, which vary according to the specific character of the precipitation under analysis. Thus, NAO exerts a clear effect on the intensity of total and extreme precipitation rates in northern and westernmost Spanish regions, whereas the frequency of precipitation is clearly affected by NAO in central and southwestern areas. While the correlation between NAO and precipitation is negative for most of the analyzed area, two regions reveal positive responses to NAO in total precipitation occurrence and intensity for specific months. Further analyses reveal asymmetric responses to opposite phases of NAO in the precipitation distributions of some regions. The complex regional relationship between NAO and precipitation is also revealed through the modulation of the former in the preferred Circulation Weather Types associated to precipitation in each region. This spatially non-homogeneous NAO signal stresses the need of caution when employing Iberian precipitation as a proxy for NAO. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Universidad Complutense de Madrid (UCM): E-Prints Complutense Atmospheric Research 94 4 675 683 |
institution |
Open Polar |
collection |
Universidad Complutense de Madrid (UCM): E-Prints Complutense |
op_collection_id |
ftunivcmadrid |
language |
English |
topic |
Astrofísica Astronomía Física atmosférica |
spellingShingle |
Astrofísica Astronomía Física atmosférica Queralt, S. Barriopedro Cepero, David Hernández, E. Gallego, D. Ribera, P. Casanova, C. North Atlantic oscillation influence and weather types associated with winter total and extreme precipitation events in Spain |
topic_facet |
Astrofísica Astronomía Física atmosférica |
description |
An analysis of winter intensity and frequency of precipitation is presented, based on 102 daily precipitation stations over Spain and the Balearic Islands for the 1997-2006 decade. Precipitation stations have been merged in the eight different regions which compose the analyzed area by the use of an EOF analysis. NAO influence on the intensity and frequency of precipitation of each region is described in terms of mean precipitation, mean rain frequency, the number of extreme events, changes in the precipitation distribution and the prevalent synoptic configuration. Results indicate a non-stationary response; NAO signal being more evident in mid-late winter. Strong regional differences in the response to NAO are also found, which vary according to the specific character of the precipitation under analysis. Thus, NAO exerts a clear effect on the intensity of total and extreme precipitation rates in northern and westernmost Spanish regions, whereas the frequency of precipitation is clearly affected by NAO in central and southwestern areas. While the correlation between NAO and precipitation is negative for most of the analyzed area, two regions reveal positive responses to NAO in total precipitation occurrence and intensity for specific months. Further analyses reveal asymmetric responses to opposite phases of NAO in the precipitation distributions of some regions. The complex regional relationship between NAO and precipitation is also revealed through the modulation of the former in the preferred Circulation Weather Types associated to precipitation in each region. This spatially non-homogeneous NAO signal stresses the need of caution when employing Iberian precipitation as a proxy for NAO. |
format |
Article in Journal/Newspaper |
author |
Queralt, S. Barriopedro Cepero, David Hernández, E. Gallego, D. Ribera, P. Casanova, C. |
author_facet |
Queralt, S. Barriopedro Cepero, David Hernández, E. Gallego, D. Ribera, P. Casanova, C. |
author_sort |
Queralt, S. |
title |
North Atlantic oscillation influence and weather types associated with winter total and extreme precipitation events in Spain |
title_short |
North Atlantic oscillation influence and weather types associated with winter total and extreme precipitation events in Spain |
title_full |
North Atlantic oscillation influence and weather types associated with winter total and extreme precipitation events in Spain |
title_fullStr |
North Atlantic oscillation influence and weather types associated with winter total and extreme precipitation events in Spain |
title_full_unstemmed |
North Atlantic oscillation influence and weather types associated with winter total and extreme precipitation events in Spain |
title_sort |
north atlantic oscillation influence and weather types associated with winter total and extreme precipitation events in spain |
publisher |
Elsevier Science INC |
publishDate |
2009 |
url |
https://eprints.ucm.es/id/eprint/24432/ https://eprints.ucm.es/id/eprint/24432/1/barriopedro15.pdf https://doi.org/10.1016/j.atmosres.2009.09.005 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
https://eprints.ucm.es/id/eprint/24432/1/barriopedro15.pdf |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.atmosres.2009.09.005 |
container_title |
Atmospheric Research |
container_volume |
94 |
container_issue |
4 |
container_start_page |
675 |
op_container_end_page |
683 |
_version_ |
1766134061092306944 |