Identification_Information: 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: 19800101 Ending_Date: 20001231 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: Browse_Graphic_File_Name: https://sedac.ciesin.columbia.edu/downloads/maps/ndh/ndh-drought-hazard-frequency-distribution/drought-frequency-distribution-thumbnail.jpg Browse_Graphic_File_Description: Global Drought Hazard Frequency and Distribution Browse_Graphic_File_Type: JPEG 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: Lineage: Source_Information: Source_Citation: Citation_Information: Originator: International Research Institute for Climate Prediction (IRI) Title: Global WASP Analyses Online_Linkage: http://ingrid.ldeo.columbia.edu/maproom/.Global/.Precipitation/WASP_Indices.html 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: 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: 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: 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: Network_Address: Network_Resource_Name: https://sedac.ciesin.columbia.edu/data/set/ndh-drought-hazard-frequency-distribution/data-download Access_Instructions: Data accessible via the data set landing page. Digital_Form: Digital_Transfer_Information: Format_Name: PDF Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://sedac.ciesin.columbia.edu/data/set/ndh-drought-hazard-frequency-distribution/maps Access_Instructions: Maps accessible via the data set landing page. Digital_Form: Digital_Transfer_Information: Format_Name: PNG Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://sedac.ciesin.columbia.edu/data/set/ndh-drought-hazard-frequency-distribution/maps Access_Instructions: Maps accessible via the data set landing page. Digital_Form: Digital_Transfer_Information: Format_Name: WMS Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://sedac.ciesin.columbia.edu/data/set/ndh-drought-hazard-frequency-distribution/maps/services Access_Instructions: Web Map Services accessible via the data set landing page. Available_Time_Period: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20051231 Ending_Date: Present Metadata_Reference_Information: Metadata_Date: 20050929 Metadata_Review_Date: 20220413 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