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dc.contributor.authorVicente Serrano, Sergio M.-
dc.contributor.authorBeguería, Santiago-
dc.contributor.authorLópez-Moreno, Juan I.-
dc.date.accessioned2010-03-15T15:56:27Z-
dc.date.available2010-03-15T15:56:27Z-
dc.date.issued2010-
dc.identifier.citationVicente SM, Beguería S, López-Moreno JI. A multi-scalar drought index sensitive to global warming: the standardized precipitation evapotranspiration index – SPEI. Journal of Climate 23(7): 1696 (2010)en_US
dc.identifier.issn1520-0442-
dc.identifier.urihttp://hdl.handle.net/10261/22405-
dc.description.abstractWe propose a new climatic drought index: the Standardized Precipitation Evapotranspiration Index (SPEI). The SPEI is based on precipitation and temperature data, and has the advantage of combining a multi-scalar character with the capacity to include the effects of temperature variability on drought assessment. The procedure to calculate the index is detailed, and involves a climatic water balance, the accumulation of deficit/surplus at different time scales, and adjustment to a Log-logistic probability distribution. Mathematically, the SPEI is similar to the Standardized Precipitation Index (SPI), but includes the role of temperature. As the SPEI is based on a water balance, it can be compared to the self-calibrated Palmer Drought Severity Index (sc-PDSI). We compared time series of the three indices for a set of observatories with different climate characteristics, located in different parts of the world. Under global warming conditions only the sc-PDSI and SPEI identified an increase in drought severity associated with higher water demand due to evapotranspiration. Relative to the sc-PDSI, the SPEI has the advantage of being multi-scalar, which is crucial for drought analysis and monitoring.en_US
dc.description.sponsorshipThis work has been supported by the research projects CGL2006-11619/HID, CGL2008- 01189/BTE, and CGL2008-1083/CLI financed by the Spanish Commission of Science and Technology and FEDER, EUROGEOSS (FP7-ENV-2008-1-226487) and ACQWA (FP7- ENV-2007-1-212250) financed by the VII Framework Programme of the European Commission, “Las sequías climáticas en la cuenca del Ebro y su respuesta hidrológica” and “La nieve en el Pirineo Aragonés: distribución espacial y su respuesta a las condiciones climáticas” Financed by “Obra Social La Caixa” and the Aragón Government and the “Programa de grupos de investigación consolidados” financed by the Aragón Government.ÿen_US
dc.format.extent9389607 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoengen_US
dc.publisherAmerican Meteorological Societyen_US
dc.relationinfo:eu-repo/grantAgreement/EC/FP7/226487-
dc.rightsopenAccess-
dc.subjectDroughten_US
dc.subjectDrought indexen_US
dc.subjectLog-logistic distributionen_US
dc.subjectGlobal warmingen_US
dc.subjectStandardized Precipitation Indexen_US
dc.subjectPalmer Drought Severity Indexen_US
dc.subjectPrecipitationen_US
dc.subjectEvapotranspirationen_US
dc.titleA multi-scalar drought index sensitive to global warming: the standardized precipitation evapotranspiration index – SPEIen_US
dc.typeartículoen_US
dc.identifier.doi10.1175/2009JCLI2909.1-
dc.description.peerreviewedPeer revieweden_US
dc.relation.publisherversionhttp://dx.doi.org/10.1175/2009JCLI2909.1en_US
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.grantfulltextopen-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.languageiso639-1en-
item.fulltextWith Fulltext-
item.openairetypeartículo-
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