NDLI: Differences in Spatial Patterns of Drought on Different Time Scales: An Analysis of the Iberian Peninsula

Content Provider	Springer Nature Link
Author	Vicente Serra, Sergio M.
Copyright Year	2006
Abstract	The differences in spatial patterns of drought over a range of time scales were analysed by the Standardized Precipitation Index (SPI). In a climatic area with a wide range of precipitation characteristics (the Iberian Peninsula), Pearson III distribution is flexible enough to calculate the drought index on different time scales. The Pearson III distribution was adapted to precipitation frequencies at time scales of 1, 3, 6, 12, 24 and 36 months. Spatial patterns of drought were analysed by Principal Component Analysis. The number of components found increased as the time scale did, which indicates great spatial complexity in drought analysis and uncertainty in drought classification, mainly at scales of 24 or 36 months, since the relationships between SPI series of observatories becomes more distant as the time scale increases. We concluded that there were no homogeneous regions with similar drought patterns that could be used for effective drought management or early warning.
Starting Page	37
Ending Page	60
Page Count	24
File Format	PDF
ISSN	09204741
Journal	Water Resources Management
Volume Number	20
Issue Number	1
e-ISSN	15731650
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-01-01
Publisher Institution	European Water Resources Association (EWRA)
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	drought Iberian Peninsula Pearson III distribution principal component analysis standardized precipitation index time scales Hydrogeology Meteorology/Climatology Geotechnical Engineering Civil Engineering Environment
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Civil and Structural Engineering

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