The complex influence of ENSO on droughts in Ecuador

Handle URI:
http://hdl.handle.net/10754/621806
Title:
The complex influence of ENSO on droughts in Ecuador
Authors:
Vicente-Serrano, S. M.; Aguilar, E.; Martínez, R.; Martín-Hernández, N.; Azorin-Molina, C.; Sanchez-Lorenzo, A.; El Kenawy, Ahmed M. ( 0000-0001-6639-6253 ) ; Tomás-Burguera, M.; Moran-Tejeda, E.; López-Moreno, J. I.; Revuelto, J.; Beguería, S.; Nieto, J. J.; Drumond, A.; Gimeno, L.; Nieto, R.
Abstract:
In this study, we analyzed the influence of El Niño–Southern Oscillation (ENSO) on the spatio-temporal variability of droughts in Ecuador for a 48-year period (1965–2012). Droughts were quantified from 22 high-quality and homogenized time series of precipitation and air temperature by means of the Standardized Precipitation Evapotranspiration Index. In addition, the propagation of two different ENSO indices (El Niño 3.4 and El Niño 1 + 2 indices) and other atmospheric circulation processes (e.g., vertical velocity) on different time-scales of drought severity were investigated. The results showed a very complex influence of ENSO on drought behavior across Ecuador, with two regional patterns in the evolution of droughts: (1) the Andean chain with no changes in drought severity, and (2) the Western plains with less severe and frequent droughts. We also detected that drought variability in the Andes mountains is explained by the El Niño 3.4 index [sea surface temperature (SST) anomalies in the central Pacific], whereas the Western plains are much more driven by El Niño 1 + 2 index (SST anomalies in the eastern Pacific). Moreover, it was also observed that El Niño and La Niña phases enhance droughts in the Andes and Western plains regions, respectively. The results of this work could be crucial for predicting and monitoring drought variability and intensity in Ecuador. © 2016 Springer-Verlag Berlin Heidelberg
KAUST Department:
Water Desalination and Reuse Research Center (WDRC)
Citation:
Vicente-Serrano SM, Aguilar E, Martínez R, Martín-Hernández N, Azorin-Molina C, et al. (2016) The complex influence of ENSO on droughts in Ecuador. Climate Dynamics. Available: http://dx.doi.org/10.1007/s00382-016-3082-y.
Publisher:
Springer Science + Business Media
Journal:
Climate Dynamics
Issue Date:
26-Mar-2016
DOI:
10.1007/s00382-016-3082-y
Type:
Article
ISSN:
0930-7575; 1432-0894
Sponsors:
European Commission[LIFE12 ENV/ES/000536]; Ministerio de Economía y Competitividad[CGL2014-517221-REDT, CGL2011-27574-CO2-02, CGL2014-52135-C03-01]; CSIC[I-COOP H2O 2013CD0006]
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorVicente-Serrano, S. M.en
dc.contributor.authorAguilar, E.en
dc.contributor.authorMartínez, R.en
dc.contributor.authorMartín-Hernández, N.en
dc.contributor.authorAzorin-Molina, C.en
dc.contributor.authorSanchez-Lorenzo, A.en
dc.contributor.authorEl Kenawy, Ahmed M.en
dc.contributor.authorTomás-Burguera, M.en
dc.contributor.authorMoran-Tejeda, E.en
dc.contributor.authorLópez-Moreno, J. I.en
dc.contributor.authorRevuelto, J.en
dc.contributor.authorBeguería, S.en
dc.contributor.authorNieto, J. J.en
dc.contributor.authorDrumond, A.en
dc.contributor.authorGimeno, L.en
dc.contributor.authorNieto, R.en
dc.date.accessioned2016-11-03T13:25:22Z-
dc.date.available2016-11-03T13:25:22Z-
dc.date.issued2016-03-26en
dc.identifier.citationVicente-Serrano SM, Aguilar E, Martínez R, Martín-Hernández N, Azorin-Molina C, et al. (2016) The complex influence of ENSO on droughts in Ecuador. Climate Dynamics. Available: http://dx.doi.org/10.1007/s00382-016-3082-y.en
dc.identifier.issn0930-7575en
dc.identifier.issn1432-0894en
dc.identifier.doi10.1007/s00382-016-3082-yen
dc.identifier.urihttp://hdl.handle.net/10754/621806-
dc.description.abstractIn this study, we analyzed the influence of El Niño–Southern Oscillation (ENSO) on the spatio-temporal variability of droughts in Ecuador for a 48-year period (1965–2012). Droughts were quantified from 22 high-quality and homogenized time series of precipitation and air temperature by means of the Standardized Precipitation Evapotranspiration Index. In addition, the propagation of two different ENSO indices (El Niño 3.4 and El Niño 1 + 2 indices) and other atmospheric circulation processes (e.g., vertical velocity) on different time-scales of drought severity were investigated. The results showed a very complex influence of ENSO on drought behavior across Ecuador, with two regional patterns in the evolution of droughts: (1) the Andean chain with no changes in drought severity, and (2) the Western plains with less severe and frequent droughts. We also detected that drought variability in the Andes mountains is explained by the El Niño 3.4 index [sea surface temperature (SST) anomalies in the central Pacific], whereas the Western plains are much more driven by El Niño 1 + 2 index (SST anomalies in the eastern Pacific). Moreover, it was also observed that El Niño and La Niña phases enhance droughts in the Andes and Western plains regions, respectively. The results of this work could be crucial for predicting and monitoring drought variability and intensity in Ecuador. © 2016 Springer-Verlag Berlin Heidelbergen
dc.description.sponsorshipEuropean Commission[LIFE12 ENV/ES/000536]en
dc.description.sponsorshipMinisterio de Economía y Competitividad[CGL2014-517221-REDT, CGL2011-27574-CO2-02, CGL2014-52135-C03-01]en
dc.description.sponsorshipCSIC[I-COOP H2O 2013CD0006]en
dc.publisherSpringer Science + Business Mediaen
dc.subjectDroughten
dc.subjectEcuadoren
dc.subjectEl Niño 1 + 2en
dc.subjectEl Niño 3.4en
dc.subjectStandardized Precipitation Evapotranspiration Index (SPEI)en
dc.titleThe complex influence of ENSO on droughts in Ecuadoren
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalClimate Dynamicsen
dc.contributor.institutionInstituto Pirenaico de Ecología, Consejo Superior de Investigaciones Científicas (IPE–CSIC), Saragossa, Spainen
dc.contributor.institutionCenter for Climate Change, C3, Universitat Rovira i Virgili (URV), Tarragona, Spainen
dc.contributor.institutionCentro Internacional para la Investigación del Fenómeno de El Niño (CIIFEN), Guayaquil, Ecuadoren
dc.contributor.institutionDepartment of Geography, Mansoura University, Mansoura, Egypten
dc.contributor.institutionEstación Experimental Aula Dei, Consejo Superior de Investigaciones Científicas (EEAD-CSIC), Saragossa, Spainen
dc.contributor.institutionEnvironmental Physics Laboratory, Universidade de Vigo, Ourense, Spainen
kaust.authorEl Kenawy, Ahmed M.en
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