Mediterranean-Scale Drought: Regional Datasets for Exceptional Meteorological Drought Events during 1975-2019

Drought is one of the most complex climate-related phenomena and is expected to progressively affect our lives by causing very serious environmental and socioeconomic damage by the end of the 21st century. In this study, we have extracted a dataset of exceptional meteorological drought events betwee...

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Autores: Mathbout, Shifa, López Bustins, Joan Albert, Royé, Dominic, Martín Vide, Javier
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2021
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositório:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/180947
Acesso em linha:https://hdl.handle.net/2445/180947
Access Level:Acceso aberto
Palavra-chave:Sequeres
Canvi climàtic
Mediterrània (Regió)
Droughts
Climatic change
Mediterranean Region
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spelling Mediterranean-Scale Drought: Regional Datasets for Exceptional Meteorological Drought Events during 1975-2019Mathbout, ShifaLópez Bustins, Joan AlbertRoyé, DominicMartín Vide, JavierSequeresCanvi climàticMediterrània (Regió)DroughtsClimatic changeMediterranean RegionDrought is one of the most complex climate-related phenomena and is expected to progressively affect our lives by causing very serious environmental and socioeconomic damage by the end of the 21st century. In this study, we have extracted a dataset of exceptional meteorological drought events between 1975 and 2019 at the country and subregional scales. Each drought event was described by its start and end date, intensity, severity, duration, areal extent, peak month and peak area. To define such drought events and their characteristics, separate analyses based on three drought indices were performed at 12-month timescale: the Standardized Precipitation Index (SPI), the Standardized Precipitation Evapotranspiration Index (SPEI), and the Reconnaissance Drought Index (RDI). A multivariate combined drought index (DXI) was developed by merging the previous three indices for more understanding of droughts' features at the country and subregional levels. Principal component analysis (PCA) was used to identify five different drought subregions based on DXI-12 values for 312 Mediterranean stations and a new special score was defined to classify the multi-subregional exceptional drought events across the Mediterranean Basin (MED). The results indicated that extensive drought events occurred more frequently since the late 1990s, showing several drought hotspots in the last decades in the southeastern Mediterranean and northwest Africa. In addition, the results showed that the most severe events were more detected when more than single drought index was used. The highest percentage area under drought was also observed through combining the variations of three drought indices. Furthermore, the drought area in both dry and humid areas in the MED has also experienced a remarkable increase since the late 1990s. Based on a comparison of the drought events during the two periods 1975-1996 and 1997-2019 we find that the current dry conditions in the MED are more severe, intense, and frequent than the earlier period; moreover, the strongest dry conditions occurred in last two decades. The SPEI-12 and RDI-12 have a higher capacity in providing a more comprehensive description of the dry conditions because of the inclusion of temperature or atmospheric evaporative demand in their scheme. A complex range of atmospheric circulation patterns, particularly the Western Mediterranean Oscillation (WeMO) and East Atlantic/West Russia (EATL/WRUS), appear to play an important role in severe, intense and region-wide droughts, including the two most severe droughts, 1999-2001 and 2007-2012, with lesser influence of the NAO, ULMO and SCAND.MDPI2021202120212021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion41 p.application/pdfhttps://hdl.handle.net/2445/180947Articles publicats en revistes (Geografia)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.3390/atmos12080941Atmosphere, 2021, vol. 12, num. 8, p. 2-42https://doi.org/10.3390/atmos12080941cc-by (c) Mathbout, Shifa et al., 2021https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1809472026-05-29T05:05:01Z
dc.title.none.fl_str_mv Mediterranean-Scale Drought: Regional Datasets for Exceptional Meteorological Drought Events during 1975-2019
title Mediterranean-Scale Drought: Regional Datasets for Exceptional Meteorological Drought Events during 1975-2019
spellingShingle Mediterranean-Scale Drought: Regional Datasets for Exceptional Meteorological Drought Events during 1975-2019
Mathbout, Shifa
Sequeres
Canvi climàtic
Mediterrània (Regió)
Droughts
Climatic change
Mediterranean Region
title_short Mediterranean-Scale Drought: Regional Datasets for Exceptional Meteorological Drought Events during 1975-2019
title_full Mediterranean-Scale Drought: Regional Datasets for Exceptional Meteorological Drought Events during 1975-2019
title_fullStr Mediterranean-Scale Drought: Regional Datasets for Exceptional Meteorological Drought Events during 1975-2019
title_full_unstemmed Mediterranean-Scale Drought: Regional Datasets for Exceptional Meteorological Drought Events during 1975-2019
title_sort Mediterranean-Scale Drought: Regional Datasets for Exceptional Meteorological Drought Events during 1975-2019
dc.creator.none.fl_str_mv Mathbout, Shifa
López Bustins, Joan Albert
Royé, Dominic
Martín Vide, Javier
author Mathbout, Shifa
author_facet Mathbout, Shifa
López Bustins, Joan Albert
Royé, Dominic
Martín Vide, Javier
author_role author
author2 López Bustins, Joan Albert
Royé, Dominic
Martín Vide, Javier
author2_role author
author
author
dc.subject.none.fl_str_mv Sequeres
Canvi climàtic
Mediterrània (Regió)
Droughts
Climatic change
Mediterranean Region
topic Sequeres
Canvi climàtic
Mediterrània (Regió)
Droughts
Climatic change
Mediterranean Region
description Drought is one of the most complex climate-related phenomena and is expected to progressively affect our lives by causing very serious environmental and socioeconomic damage by the end of the 21st century. In this study, we have extracted a dataset of exceptional meteorological drought events between 1975 and 2019 at the country and subregional scales. Each drought event was described by its start and end date, intensity, severity, duration, areal extent, peak month and peak area. To define such drought events and their characteristics, separate analyses based on three drought indices were performed at 12-month timescale: the Standardized Precipitation Index (SPI), the Standardized Precipitation Evapotranspiration Index (SPEI), and the Reconnaissance Drought Index (RDI). A multivariate combined drought index (DXI) was developed by merging the previous three indices for more understanding of droughts' features at the country and subregional levels. Principal component analysis (PCA) was used to identify five different drought subregions based on DXI-12 values for 312 Mediterranean stations and a new special score was defined to classify the multi-subregional exceptional drought events across the Mediterranean Basin (MED). The results indicated that extensive drought events occurred more frequently since the late 1990s, showing several drought hotspots in the last decades in the southeastern Mediterranean and northwest Africa. In addition, the results showed that the most severe events were more detected when more than single drought index was used. The highest percentage area under drought was also observed through combining the variations of three drought indices. Furthermore, the drought area in both dry and humid areas in the MED has also experienced a remarkable increase since the late 1990s. Based on a comparison of the drought events during the two periods 1975-1996 and 1997-2019 we find that the current dry conditions in the MED are more severe, intense, and frequent than the earlier period; moreover, the strongest dry conditions occurred in last two decades. The SPEI-12 and RDI-12 have a higher capacity in providing a more comprehensive description of the dry conditions because of the inclusion of temperature or atmospheric evaporative demand in their scheme. A complex range of atmospheric circulation patterns, particularly the Western Mediterranean Oscillation (WeMO) and East Atlantic/West Russia (EATL/WRUS), appear to play an important role in severe, intense and region-wide droughts, including the two most severe droughts, 1999-2001 and 2007-2012, with lesser influence of the NAO, ULMO and SCAND.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/180947
url https://hdl.handle.net/2445/180947
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.3390/atmos12080941
Atmosphere, 2021, vol. 12, num. 8, p. 2-42
https://doi.org/10.3390/atmos12080941
dc.rights.none.fl_str_mv cc-by (c) Mathbout, Shifa et al., 2021
https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Mathbout, Shifa et al., 2021
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 41 p.
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv Articles publicats en revistes (Geografia)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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