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A new global 0.5° gridded dataset (1901-2006) of a multiscalar drought index: comparison with current drought index datasets based on the Palmer Drought Severity Index

AuthorsVicente Serrano, Sergio M. CSIC ORCID ; Beguería, Santiago CSIC ORCID ; López-Moreno, Juan I. CSIC ORCID ; Angulo-Martínez, Marta CSIC ORCID ; El Kenawy, Ahmed M. CSIC ORCID
Drought index
Standardized precipitation evapotranspiration index
Palmer drought severity index
Climate datat
Global dataset
Standardized precipitation index
Issue Date2010
PublisherAmerican Meteorological Society
CitationJournal of Hydrometeorology 11(4): 1033-1043 (2010)
AbstractA monthly global dataset of a multiscalar drought index is presented and compared in terms of spatial and temporal variability with the existing continental and global drought datasets based on the Palmer drought severity index (PDSI). The presented dataset is based on the standardized precipitation evapotranspiration index (SPEI). The index was obtained using the CRU TS3.0 dataset at a spatial resolution of 0.5°. The advantages of the new dataset are that; i) it improves the spatial resolution of the unique global drought dataset at a global scale; ii) it is spatially and temporally comparable to other datasets, given the probabilistic nature of the SPEI, and, in particular; iii) it enables identification of various drought types, given the multiscalar character of the SPEI. The dataset is freely available on the web page of the Spanish National Research Council (CSIC) in three different formats (NetCDF, binary raster, and plain text).
Publisher version (URL)http://dx.doi.org/10.1175/2010JHM1224.1
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(IPE) Artículos
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