Global Drought Hazard Frequency and Distribution
Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Distribution_Information
Metadata_Reference_Information
Identification Information
Section Index
Citation:
Citation Information:
Originator:
Center for Hazards and Risk Research - CHRR - Columbia University, Center for International Earth Science Information Network - CIESIN - Columbia University, and International Research Institute for Climate and Society - IRI - Columbia University
Publication Date: 20051231
Title: Global Drought Hazard Frequency and Distribution
Edition: 1.00
Geospatial Data Presentation Form: raster, map, map service
Publication Information:
Publication Place: Palisades, NY
Publisher: Center for Hazards and Risk Research (CHRR)/Columbia University
Online Linkage: https://doi.org/10.7927/H4VX0DFT
Larger Work Citation:
Citation Information:
Originator: Dilley, M., R.S. Chen, U. Deichmann, A.L. Lerner-Lam, M. Arnold, J. Agwe, P. Buys, O. Kjekstad, B. Lyon, and G. Yetman
Publication Date: 20050430
Title: Natural Disaster Hotspots: A Global Risk Analysis
Geospatial Data Presentation Form: report
Publication Information:
Publication Place: Washington, D.C.
Publisher: World Bank
Online Linkage: http://documents.worldbank.org/curated/en/621711468175150317/Natural-disaster-hotspots-A-global-risk-analysis
Description:
Abstract:
The Global Drought Hazard Frequency and Distribution is a 2.5 minute grid based upon the International Research Institute for Climate Prediction's (IRI) Weighted Anomaly of Standardized Precipitation (WASP). Utilizing average monthly precipitation data from 1980 through 2000 at a resolution of 2.5 degrees, WASP assesses the precipitation deficit or surplus over a three month temporal window that is weighted by the magnitude of the seasonal cyclic variation in precipitation. The three months' averages are derived from the precipitation data and the median rainfall for the 21 year period is calculated for each grid cell. Grid cells where the three month running average of precipitation is less than 1 mm per day ae excluded. Drought events are identified when the magnitude of a monthly precipitation deficit is less than or equal to 50 percent of its longterm median value for three or more consecutive months. Grid cells are then divided into 10 classes having an approximately equal number of grid cells. Higher grid cell values denote higher frequencies of drought occurrences. This data set is the result of collaboration among the Columbia University Center for Hazards and Risk Research (CHRR), Columbia University International Research Institute for Climate Prediction (IRI), and Columbia University Center for International Earth Science Information Network (CIESIN).
Purpose: To provide a means of assessing the relative distribution and frequency of global drought hazard.
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1980/01/01
Ending Date: 2000/12/31
Currentness Reference: publication date
Status:
Progress: Complete
Maintenance and Update Frequency: As needed
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -180.000000
East Bounding Coordinate: 180.000000
North Bounding Coordinate: 85.000000
South Bounding Coordinate: -58.000000
Keywords:
Theme:
Theme Keyword Thesaurus: SEDAC Theme
Theme Keyword: Agriculture
Theme Keyword: Climate
Theme Keyword: Hazards
Theme Keyword: Sustainability
Theme Keyword: Water
Theme:
Theme Keyword Thesaurus: Data Granularity
Theme Keyword: Global
Theme Keyword: Continent
Theme:
Theme Keyword Thesaurus: ISO Topic
Theme Keyword: Climatology/Meteorology/Atmosphere
Theme:
Theme Keyword Thesaurus: GCMD Science Keywords, Version 8.6
Theme Keyword: EARTH SCIENCE > HUMAN DIMENSIONS > NATURAL HAZARDS > DROUGHTS
Place:
Place Keyword Thesaurus: CIESIN Location Terms, Version 3.1
Place Keyword: Global
Access Constraints: None
Use Constraints:
The Trustees of Columbia University in the City of New York, Center for Hazards and Risk Research (CHRR), and International Research Institute for Climate and Society (IRI) hold the copyright of this data set. Users are prohibited from any commercial, non-free resale, or redistribution without explicit written permission from the CHRR, CIESIN, and IRI. Users should acknowledge CHRR, CIESIN, and IRI 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, CIESIN, and IRI also request reprints of any publications and notification of any redistribution efforts.
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: NASA Socioeconomic Data and Applications Center (SEDAC)
Contact Address:
Address Type: mailing and physical address
Address: CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
City: Palisades
State or Province: New York
Postal Code: 10964
Country: USA
Contact Voice Telephone: +1 845-365-8920
Contact Facsimile Telephone: +1 845-365-8922
Contact Electronic Mail Address: ciesin.info@ciesin.columbia.edu
Browse Graphic:
Cross Reference:
Citation Information:
Originator:
Center for Hazards and Risk Research - CHRR - Columbia University, Center for International Earth Science Information Network - CIESIN - Columbia University, and International Bank for Reconstruction and Development - The World Bank
Publication Date: 20051231
Title: Global Drought Total Economic Loss Risk Deciles
Edition: 1.00
Geospatial Data Presentation Form: raster, map, map service
Publication Information:
Publication Place: Palisades, NY
Publisher: Center for Hazards and Risk Research (CHRR)/Columbia University
Online Linkage: https://doi.org/10.7927/H4GQ6VP4
Larger Work Citation:
Citation Information:
Originator: Dilley, M., R.S. Chen, U. Deichmann, A.L. Lerner-Lam, M. Arnold, J. Agwe, P. Buys, O. Kjekstad, B. Lyon, and G. Yetman
Publication Date: 20050430
Title: Natural Disaster Hotspots: A Global Risk Analysis
Geospatial Data Presentation Form: report
Publication Information:
Publication Place: Washington, D.C.
Publisher: World Bank
Online Linkage: http://documents.worldbank.org/curated/en/621711468175150317/Natural-disaster-hotspots-A-global-risk-analysis
Cross Reference:
Citation Information:
Originator:
Center for Hazards and Risk Research - CHRR - Columbia University, Center for International Earth Science Information Network - CIESIN - Columbia University, and International Bank for Reconstruction and Development - The World Bank
Publication Date: 20051231
Title: Global Drought Mortality Risks and Distribution
Edition: 1.00
Geospatial Data Presentation Form: raster, map, map service
Publication Information:
Publication Place: Palisades, NY
Publisher: Center for Hazards and Risk Research (CHRR)/Columbia University
Online Linkage: https://doi.org/10.7927/H4R49NQV
Larger Work Citation:
Citation Information:
Originator: Dilley, M., R.S. Chen, U. Deichmann, A.L. Lerner-Lam, M. Arnold, J. Agwe, P. Buys, O. Kjekstad, B. Lyon, and G. Yetman
Publication Date: 20050430
Title: Natural Disaster Hotspots: A Global Risk Analysis
Geospatial Data Presentation Form: report
Publication Information:
Publication Place: Washington, D.C.
Publisher: World Bank
Online Linkage: http://documents.worldbank.org/curated/en/621711468175150317/Natural-disaster-hotspots-A-global-risk-analysis
Cross Reference:
Citation Information:
Originator:
Center for Hazards and Risk Research - CHRR - Columbia University, Center for International Earth Science Information Network - CIESIN - Columbia University, and International Bank for Reconstruction and Development - The World Bank
Publication Date: 20051231
Title: Global Drought Proportional Economic Loss Risk Deciles
Edition: 1.00
Geospatial Data Presentation Form: raster, map, map service
Publication Information:
Publication Place: Palisades, NY
Publisher: Center for Hazards and Risk Research (CHRR)/Columbia University
Online Linkage: https://doi.org/10.7927/H4MG7MDV
Larger Work Citation:
Citation Information:
Originator: Dilley, M., R.S. Chen, U. Deichmann, A.L. Lerner-Lam, M. Arnold, J. Agwe, P. Buys, O. Kjekstad, B. Lyon, and G. Yetman
Publication Date: 20050430
Title: Natural Disaster Hotspots: A Global Risk Analysis
Geospatial Data Presentation Form: report
Publication Information:
Publication Place: Washington, D.C.
Publisher: World Bank
Online Linkage: http://documents.worldbank.org/curated/en/621711468175150317/Natural-disaster-hotspots-A-global-risk-analysis
Data Quality Information
Section Index
Lineage:
Source Information:
Source Citation:
Source Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1980
Ending Date: 2000
Source Contribution: Provided means of identifying global drought hazard.
Process Step:
Process Description:
Global Drought Hazard Frequency and Distribution used the Weighted Anomaly of Standardized Precipitation (WASP) developed by IRI, computed on a 2.5 minute grid from monthly average precipitation data for 1980 through 2000. The WASP assesses the precipitation deficit or surplus over a specified number of months, weighted by the magnitude of the seasonal cyclic variation in precipitation. A three-month running average was applied to the precipitation data and the median rainfall for the 21-year period calculated for each grid point. A mask was applied to eliminate grid points where the three-month running average precipitation was less than 1 millimeter per day. This excluded both desert regions and dry seasons from analysis. For the remaining points, a drought event was identified when the magnitude of a monthly precipitation deficit was less than or equal to 50 percent of its long-term median value for three or more consecutive months.
The final surface was created by classifiying the number of drought events into deciles, 10 classes of an approximately equal number of grid cells. An additional analysis mask excluded those portions of the land surface where the population density was less than 5 persons per square kilometer and there was no significant agriculture.
Spatial Data Organization Information
Section Index
Direct Spatial Reference Method: Raster
Raster Object Information:
Raster Object Type: Grid Cell
Row Count: 3432
Column Count: 8640
Vertical Count: 1
Spatial Reference Information
Section Index
Horizontal Coordinate System Definition:
Geographic:
Latitude Resolution: 0.041700
Longitude Resolution: 0.041700
Geographic Coordinate Units: Decimal degrees
Geodetic Model:
Horizontal Datum Name: WGS84
Ellipsoid Name: WGS84
Semi-major Axis: 6378137.000000
Denominator of Flattening Ratio: 298.257224
Distribution Information
Section Index
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: NASA Socioeconomic Data and Applications Center (SEDAC)
Contact Address:
Address Type: mailing and physical address
Address: CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
City: Palisades
State or Province: New York
Postal Code: 10964
Country: USA
Contact Voice Telephone: +1 845-365-8920
Contact Facsimile Telephone: +1 845-365-8922
Contact Electronic Mail Address: ciesin.info@ciesin.columbia.edu
Resource Description: CIESIN_CHRR_NDH_DROUGHT_HFD
Distribution Liability:
CIESIN follows procedures designed to ensure that data disseminated by CIESIN are of reasonable quality. If, despite these procedures, users encounter apparent errors or misstatements in the data, they should contact SEDAC User Services at +1 845-365-8920 or via email at ciesin.info@ciesin.columbia.edu. Neither CIESIN nor NASA verifies or guarantees the accuracy, reliability, or completeness of any data provided. CIESIN provides this data without warranty of any kind whatsoever, either expressed or implied. CIESIN shall not be liable for incidental, consequential, or special damages arising out of the use of any data provided by CIESIN.
Standard Order Process:
Fees: 0
Ordering Instructions:
The data in American Standard Code for Information Interchange (.asc) format; the maps in Portable Document Format (.pdf), and Portable Network Graphics (.png) formats; and the web map services are available from the NASA Socioeconomic Data and Applications Center (SEDAC).
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: ASCII
File Decompression Technique: Unzip
Digital Transfer Option:
Online Option:
Computer Contact Information:
Access Instructions: Data accessible via the data set landing page.
Digital Form:
Digital Transfer Information:
Digital Transfer Option:
Online Option:
Computer Contact Information:
Access Instructions: Maps accessible via the data set landing page.
Digital Form:
Digital Transfer Information:
Digital Transfer Option:
Online Option:
Computer Contact Information:
Access Instructions: Maps accessible via the data set landing page.
Digital Form:
Digital Transfer Information:
Digital Transfer Option:
Online Option:
Computer Contact Information:
Access Instructions: Web Map Services accessible via the data set landing page.
Available Time Period:
Time Period Information:
Range of Dates/Times:
Beginning Date: 2005/12/31
Ending Date: Present
Metadata Reference Information
Section Index
Metadata Date: 2005/09/29
Metadata Review Date: 2022/04/13
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Center for International Earth Science Information Network (CIESIN) Metadata Administration
Contact Address:
Address Type: mailing and physical address
Address: CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
City: Palisades
State or Province: New York
Postal Code: 10964
Country: USA
Contact Voice Telephone: +1 845-365-8988
Contact Facsimile Telephone: +1 845-365-8922
Contact Electronic Mail Address: metadata@ciesin.columbia.edu
Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time
GeoMedia
Catalog report generated Wednesday, April 13, 2022