Hydrometeorological droughts in the Miño–Limia–Sil hydrographic demarcation (northwestern Iberian Peninsula): the role of atmospheric drivers
Drought is one of the world's primary natural hazards because of its environmental, economic, and social impacts. Therefore, monitoring and prediction for small regions, countries, or whole continents are challenging. In this work, the meteorological droughts affecting the Miño–Limia–Sil hydrog...
Published in: | Natural Hazards and Earth System Sciences |
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Copernicus Publications
2020
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Online Access: | https://doi.org/10.5194/nhess-20-1805-2020 https://www.nat-hazards-earth-syst-sci.net/20/1805/2020/nhess-20-1805-2020.pdf https://doaj.org/article/bc113cf873a447b6838167122e5ef1a7 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:bc113cf873a447b6838167122e5ef1a7 2023-05-15T15:12:58+02:00 Hydrometeorological droughts in the Miño–Limia–Sil hydrographic demarcation (northwestern Iberian Peninsula): the role of atmospheric drivers R. Sorí M. Vázquez M. Stojanovic R. Nieto M. L. R. Liberato L. Gimeno 2020-06-01 https://doi.org/10.5194/nhess-20-1805-2020 https://www.nat-hazards-earth-syst-sci.net/20/1805/2020/nhess-20-1805-2020.pdf https://doaj.org/article/bc113cf873a447b6838167122e5ef1a7 en eng Copernicus Publications doi:10.5194/nhess-20-1805-2020 1561-8633 1684-9981 https://www.nat-hazards-earth-syst-sci.net/20/1805/2020/nhess-20-1805-2020.pdf https://doaj.org/article/bc113cf873a447b6838167122e5ef1a7 undefined Natural Hazards and Earth System Sciences, Vol 20, Pp 1805-1832 (2020) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.5194/nhess-20-1805-2020 2023-01-22T18:03:26Z Drought is one of the world's primary natural hazards because of its environmental, economic, and social impacts. Therefore, monitoring and prediction for small regions, countries, or whole continents are challenging. In this work, the meteorological droughts affecting the Miño–Limia–Sil hydrographic demarcation in the northwestern Iberian Peninsula during the period of 1980–2017 were identified. For this purpose and to assess the combined effects of temperature and precipitation on drought conditions, the 1-month standardized precipitation evapotranspiration index (SPEI1) was utilized. Some of the most severe episodes occurred during June 2016–January 2017, September 2011–March 2012, and December 2014–August 2015. An empirical-orthogonal-function analysis revealed that the spatial variability of the SPEI1 shows strong homogeneity in the region, and the drought phenomenon consequently behaves in the same way. Particular emphasis was given to investigating atmospheric circulation as a driver of different drought conditions. To this aim, a daily weather type classification based on the Lamb weather type (LWT) classification was utilized for the entire Iberian Peninsula. Results showed that atmospheric circulation from the southwest, west, and northwest are directly related to wet conditions in the Miño–Limia–Sil hydrographic demarcation during the entire hydrological year. Contrastingly, weather types imposing atmospheric circulation from the northeast, east, and southeast are best associated with dry conditions. Anomalies of the integrated vertical flow of humidity and their divergence for the onset, peak, and termination of the 10 most severe drought episodes also confirmed these results. In this sense, the major atmospheric teleconnection patterns related to dry and wet conditions were the Arctic Oscillation, Scandinavian pattern, and North Atlantic Oscillation. Hydrological drought investigated through the standardized runoff index was closely related to dry and wet conditions revealed by the SPEI at shorter ... Article in Journal/Newspaper Arctic North Atlantic North Atlantic oscillation Unknown Arctic Natural Hazards and Earth System Sciences 20 6 1805 1832 |
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geo envir R. Sorí M. Vázquez M. Stojanovic R. Nieto M. L. R. Liberato L. Gimeno Hydrometeorological droughts in the Miño–Limia–Sil hydrographic demarcation (northwestern Iberian Peninsula): the role of atmospheric drivers |
topic_facet |
geo envir |
description |
Drought is one of the world's primary natural hazards because of its environmental, economic, and social impacts. Therefore, monitoring and prediction for small regions, countries, or whole continents are challenging. In this work, the meteorological droughts affecting the Miño–Limia–Sil hydrographic demarcation in the northwestern Iberian Peninsula during the period of 1980–2017 were identified. For this purpose and to assess the combined effects of temperature and precipitation on drought conditions, the 1-month standardized precipitation evapotranspiration index (SPEI1) was utilized. Some of the most severe episodes occurred during June 2016–January 2017, September 2011–March 2012, and December 2014–August 2015. An empirical-orthogonal-function analysis revealed that the spatial variability of the SPEI1 shows strong homogeneity in the region, and the drought phenomenon consequently behaves in the same way. Particular emphasis was given to investigating atmospheric circulation as a driver of different drought conditions. To this aim, a daily weather type classification based on the Lamb weather type (LWT) classification was utilized for the entire Iberian Peninsula. Results showed that atmospheric circulation from the southwest, west, and northwest are directly related to wet conditions in the Miño–Limia–Sil hydrographic demarcation during the entire hydrological year. Contrastingly, weather types imposing atmospheric circulation from the northeast, east, and southeast are best associated with dry conditions. Anomalies of the integrated vertical flow of humidity and their divergence for the onset, peak, and termination of the 10 most severe drought episodes also confirmed these results. In this sense, the major atmospheric teleconnection patterns related to dry and wet conditions were the Arctic Oscillation, Scandinavian pattern, and North Atlantic Oscillation. Hydrological drought investigated through the standardized runoff index was closely related to dry and wet conditions revealed by the SPEI at shorter ... |
format |
Article in Journal/Newspaper |
author |
R. Sorí M. Vázquez M. Stojanovic R. Nieto M. L. R. Liberato L. Gimeno |
author_facet |
R. Sorí M. Vázquez M. Stojanovic R. Nieto M. L. R. Liberato L. Gimeno |
author_sort |
R. Sorí |
title |
Hydrometeorological droughts in the Miño–Limia–Sil hydrographic demarcation (northwestern Iberian Peninsula): the role of atmospheric drivers |
title_short |
Hydrometeorological droughts in the Miño–Limia–Sil hydrographic demarcation (northwestern Iberian Peninsula): the role of atmospheric drivers |
title_full |
Hydrometeorological droughts in the Miño–Limia–Sil hydrographic demarcation (northwestern Iberian Peninsula): the role of atmospheric drivers |
title_fullStr |
Hydrometeorological droughts in the Miño–Limia–Sil hydrographic demarcation (northwestern Iberian Peninsula): the role of atmospheric drivers |
title_full_unstemmed |
Hydrometeorological droughts in the Miño–Limia–Sil hydrographic demarcation (northwestern Iberian Peninsula): the role of atmospheric drivers |
title_sort |
hydrometeorological droughts in the miño–limia–sil hydrographic demarcation (northwestern iberian peninsula): the role of atmospheric drivers |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/nhess-20-1805-2020 https://www.nat-hazards-earth-syst-sci.net/20/1805/2020/nhess-20-1805-2020.pdf https://doaj.org/article/bc113cf873a447b6838167122e5ef1a7 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic North Atlantic oscillation |
genre_facet |
Arctic North Atlantic North Atlantic oscillation |
op_source |
Natural Hazards and Earth System Sciences, Vol 20, Pp 1805-1832 (2020) |
op_relation |
doi:10.5194/nhess-20-1805-2020 1561-8633 1684-9981 https://www.nat-hazards-earth-syst-sci.net/20/1805/2020/nhess-20-1805-2020.pdf https://doaj.org/article/bc113cf873a447b6838167122e5ef1a7 |
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undefined |
op_doi |
https://doi.org/10.5194/nhess-20-1805-2020 |
container_title |
Natural Hazards and Earth System Sciences |
container_volume |
20 |
container_issue |
6 |
container_start_page |
1805 |
op_container_end_page |
1832 |
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