Historical variation and trends in storminess along the Portuguese South Coast
This work investigates historical variation and trends in storm climate for the South Portugal region, using data from wave buoy measurements and from modelling, for the period 1952 to 2009. Several storm parameters (annual number of storms; annual number of days with storms; annual maximum and mean...
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ftlnec:oai:localhost:123456789/1003138 2023-05-15T17:33:32+02:00 Historical variation and trends in storminess along the Portuguese South Coast Almeida, L. P. Ferreira, Ó. Vousdoukas, M. I. Dodet, G. 2011-09-02 http://repositorio.lnec.pt:8080/jspui/handle/123456789/1003138 unknown http://repositorio.lnec.pt:8080/jspui/handle/123456789/1003138 restrictedAccess workingPaper 2011 ftlnec 2022-02-21T12:33:04Z This work investigates historical variation and trends in storm climate for the South Portugal region, using data from wave buoy measurements and from modelling, for the period 1952 to 2009. Several storm parameters (annual number of storms; annual number of days with storms; annual maximum and mean individual storm duration and annual 99.8th percentile of significant wave height) were used to analyse: (1) historical storminess trends; (2) storm parameter variability and relationships; and (3) historical storminess and its relationship to the North Atlantic Oscillation (NAO). No statistically significant linear increase or decrease was found in any of the storm parameters over the period of interest. The main pattern of storm characteristics and extreme wave heights is an oscillatory variability with intensity peaks every 7–8 yr, and the magnitude of recent variations is comparable with that of variations observed in the earlier parts of the record. In addition, the results reveal that the NAO index is able to explain only a small percentage of the variation in storm wave height, suggesting that more local factors may be of importance in controlling storminess in this region. 6 3 2407–2417 pp 11 DHA/NEC Natural Hazards and Earth System Sciences Report North Atlantic North Atlantic oscillation Repositório Cientifico do LNEC (Laboratório Nacional de Engenharia Civil) |
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Open Polar |
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Repositório Cientifico do LNEC (Laboratório Nacional de Engenharia Civil) |
op_collection_id |
ftlnec |
language |
unknown |
description |
This work investigates historical variation and trends in storm climate for the South Portugal region, using data from wave buoy measurements and from modelling, for the period 1952 to 2009. Several storm parameters (annual number of storms; annual number of days with storms; annual maximum and mean individual storm duration and annual 99.8th percentile of significant wave height) were used to analyse: (1) historical storminess trends; (2) storm parameter variability and relationships; and (3) historical storminess and its relationship to the North Atlantic Oscillation (NAO). No statistically significant linear increase or decrease was found in any of the storm parameters over the period of interest. The main pattern of storm characteristics and extreme wave heights is an oscillatory variability with intensity peaks every 7–8 yr, and the magnitude of recent variations is comparable with that of variations observed in the earlier parts of the record. In addition, the results reveal that the NAO index is able to explain only a small percentage of the variation in storm wave height, suggesting that more local factors may be of importance in controlling storminess in this region. 6 3 2407–2417 pp 11 DHA/NEC Natural Hazards and Earth System Sciences |
format |
Report |
author |
Almeida, L. P. Ferreira, Ó. Vousdoukas, M. I. Dodet, G. |
spellingShingle |
Almeida, L. P. Ferreira, Ó. Vousdoukas, M. I. Dodet, G. Historical variation and trends in storminess along the Portuguese South Coast |
author_facet |
Almeida, L. P. Ferreira, Ó. Vousdoukas, M. I. Dodet, G. |
author_sort |
Almeida, L. P. |
title |
Historical variation and trends in storminess along the Portuguese South Coast |
title_short |
Historical variation and trends in storminess along the Portuguese South Coast |
title_full |
Historical variation and trends in storminess along the Portuguese South Coast |
title_fullStr |
Historical variation and trends in storminess along the Portuguese South Coast |
title_full_unstemmed |
Historical variation and trends in storminess along the Portuguese South Coast |
title_sort |
historical variation and trends in storminess along the portuguese south coast |
publishDate |
2011 |
url |
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1003138 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1003138 |
op_rights |
restrictedAccess |
_version_ |
1766132078818099200 |