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Документ ВМО-1090. Standardized Precipitation Index. User Guide
World Meteorological Organisation, Geneva, WMO/TD-No 1090, 2012, 23 pp.
Over the years, there has been much discussion on what drought indices should be used in a particular climate and for what application. Many drought definitions and indices have been developed and attempts have been made to provide some guidance on this issue.
With this in mind, the Interregional Workshop on Indices and Early Waing Systems for Drought was organized and held at the University of Nebraska-Lincoln, United States of America, from 8 to 11 December 2009. The experts at the meeting elaborated and approved the Lincoln Declaration on Drought Indices, which recommended that the Standardized Precipitation Index (SPI) be used by all National Meteorological and Hydrological Services (NMHSs) around the world to characterize meteorological droughts, in addition to other drought indices that were in use in their service.
Contents.
Preface.
Background.
Introduction to the Standardized Precipitation Index.
Description of the Standardized Precipitation Index.
Strengths and weaknesses.
Interpretation: spatial and temporal flexibility described.
Computational methodology.
How to obtain the program.
How to run the program in Windows.
Mapping capabilities.
References.
Other online resources.