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Global Drought Hazard Frequency and Distribution

Mar 4, 2011 (Last modified Mar 8, 2011)
Description
Global Drought Hazard Frequency and Distribution is a 2.5 by 2.5 minutegrid based upon the International Research Institute for ClimatePredition's (IRI) Weighted Anomaly of Standardized Precipitation (WASP).Utilizing average monthly precipitation data from 1980 through 2000 at aresolution of 2.5 degrees, WASP assesses the precipitation deficit orsurplus over a three month temporal window that is weighted by themagnitude of the seasonal cyclic variation in precipitation. The threemonths' averages are derived from the precipitation data and the medianrainfall for the 21 year period is calculated for each grid cell. Gridcells where the three month running average of precipitation is lessthan 1 mm per day ae excluded. Drought events are identified when themagnitude of a monthly precipitation deficit is less than or equal to 50percent of its longterm median value for three or more consecutivemonths. Grid cells are then divided into 10 classes having anapproximately equal number of grid cells. Higher grid cell values denotehigher frequencies of drought occurrences. The dataset is a result ofthe collaboration among the Center for Hazards and Risk Research (CHRR), International Research Institute for Climate Prediction (IRI), and the Columbia University Center for International Earth Science Information Network (CIESIN).


If you wish to download this data, please visit http://www.ldeo.columbia.edu/chrr/research/hotspots/coredata.html
Data Provided By:
Center for Hazards and Risks Research (CHRR); Center for International Earth Science Information Network (CIESIN), Columbia University; International Research Institute for Climate Prediction (IRI)
Content date:
not specified
Citation
Global Drought Hazard Frequency and Distribution. 2005. Center for Hazards and Risks Research (CHRR), Columbia University; Center for International Earth Science Information Network (CIESIN), Columbia University; International Research Institute for Climate and Society (IRI), Columbia University. Palisades, NY: CHRR, Columbia University. Available: http://www.ldeo.columbia.edu/chrr/research/hotspots/coredata.html
Spatial Resolution:
2.5 minute grid
Contact Organization:
Socioeconomic Data and Applications Center (SEDAC) User Services
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Use Constraints
The Trustees of Columbia University in the City of New York, the Center for Hazards and Risk Research (CHRR), and the Center for International Earth Science Information Network (CIESIN) hold the copyright of this dataset. Users are prohibited from any commercial, non-free resale, or redistribution without explicit written permission from CHRR or CIESIN. Use of this data set is restricted to scientific research only. Users should acknowledge CHRR and CIESIN as the source used in the creation of any reports, publications, new data sets, derived products, or services resulting from the use of this data set. CHRR and CIESIN also request reprints of any publications and notification of any redistribution efforts.
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About the Uploader

Conservation Biology Institute

The Conservation Biology Institute (CBI) provides scientific expertise to support the conservation and recovery of biological diversity in its natural state through applied research, education, planning, and community service.