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Global Drought Hazard Frequency and Distribution

Federal Geographic Data Committee (FGDC) Metadata:

Identification_Information
Data_Quality_Information
Spatial_Reference_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Center for Hazards and Risks 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: 2005

Title: Global Drought Hazard Frequency and Distribution

Edition: 1.00

Geospatial_Data_Presentation_Form: raster, map

Series_Information:

Series_Name:
Issue_Identification:

Publication_Information:

Publication_Place: Palisades, NY
Publisher: Center for Hazards and Risk Research (CHRR)/Columbia University

Other_Citation_Details:

Online_Linkage: http://sedac.ciesin.columbia.edu/data/set/ndh-drought-hazard-frequency-distribution

Description:

Abstract:: 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 dataset 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). The data in American Standard Code for Information Interchange (ASCII) format and a map in Portable Document Format (PDF) and Portable Network Graphics (PNG) formats are available from the NASA Socioeconomic Data and Applications Center (SEDAC). To provide a means of assessing the relative distribution and frequency of global drought hazard.
Purpose:: Not Available
Supplemental_Information:: REFERENCE: 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 2005 Global Drought Mortality Risks and Distribution Palisades, NY Center for Hazards and Risk Research (CHRR)/Columbia University http://sedac.ciesin.columbia.edu/data/set/ndh-drought-mortality-risks-distribution
Supplemental_Information:: REFERENCE: 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 2005 Global Drought Proportional Economic Loss Risk Deciles Palisades, NY Center for Hazards and Risk Research (CHRR)/Columbia University http://sedac.ciesin.columbia.edu/data/set/ndh-drought-proportional-economic-loss-risk-deciles
Supplemental_Information:: REFERENCE: 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 2005 Global Drought Total Economic Loss Risk Deciles Palisades, NY Center for Hazards and Risk Research (CHRR)/Columbia University http://sedac.ciesin.columbia.edu/data/set/ndh-drought-total-economic-loss-risk-deciles

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19800101
Ending_Date: 20000101

Currentness_Reference:Unknown

Status:

Progress: Complete
Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: -180.0
East_Bounding_Coordinate: 180.0
North_Bounding_Coordinate: 85.0
South_Bounding_Coordinate: -58.0

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PHENOMENA > DROUGHT
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION ANOMALIES
Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: NDH > NATURAL DISASTER HOTSPOTS
Theme_Keyword: Ciesin > Environmental Protection > Disasters > Disaster Area
Theme_Keyword: Ciesin > Environmental Protection > Disasters > Disaster Preparedness
Theme_Keyword: Ciesin > Environmental Protection > Disasters > Disaster Prevention
Theme_Keyword: Ciesin > Environmental Protection > Disasters > Droughts
Theme_Keyword: Ciesin > Environmental Protection > Disasters > Natural Disasters
Theme_Keyword: Ciesin > Environmental Protection > Environmental Modeling > Disaster Modeling
Theme_Keyword: Disasters
Theme_Keyword: Distribution
Theme_Keyword: Droughts
Theme_Keyword: Frequency (time)
Theme_Keyword: Hazard Distribution
Theme_Keyword: Hazard Frequency
Theme_Keyword: Hazards
Theme_Keyword: Hotspots
Theme_Keyword: Weather Hazards
Theme_Keyword: Esip
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENGLISH

Place:

Place_Keyword_Thesaurus: GCMD
Place_Keyword: GEOGRAPHIC REGION > EQUATORIAL
Place_Keyword: GEOGRAPHIC REGION > GLOBAL
Place_Keyword: GEOGRAPHIC REGION > MID-LATITUDE
Place_Keyword: GEOGRAPHIC REGION > POLAR

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 Prediction (IRI) hold the copyright of this dataset. 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 datasets, derived products, or services resulting from the use of this dataset. CHRR, CIESIN, and IRI also request reprints of any publications and notification of any redistribution efforts.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: SEDAC USER SERVICES

Contact_Position: TECHNICAL CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address
Address: 61 Route 9W, P.O. Box 1000
City: Palisades
State_or_Province: NY
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

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:: 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.

Logical_Consistency_Report:

Not Available

Completeness_Report:

Not Available

Lineage:

Process_Step:

Process_Description:: Not Available
Process_Date: Unknown

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.0417 Decimal degrees
Longitude_Resolution: 0.0417 Decimal degrees
Geographic_Coordinate_Units: Decimal degrees

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: SEDAC > Socioeconomic Data and Applications Center
Contact_Person: SEDAC USER SERVICES

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address
Address: 61 Route 9W, P.O. Box 1000
City: Palisades
State_or_Province: NY
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

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: WDC/HIE, PALISADES > World Data Center for Human Interactions in the Environment
Contact_Person: ROBERT CHEN

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address
Address: WDC for Human Interactions in the Environment
Address: CIESIN/Columbia University
Address: P. O. Box 1000
Address: 61 Route 9W
City: Palisades
State_or_Province: NY
Postal_Code: 10964
Country: USA

Contact_Voice_Telephone: 1-845-365-8952

Contact_Facsimile_Telephone: 1-845-365-8922

Contact_Electronic_Mail_Address: bchen@ciesin.columbia.edu

Resource_Description: CIESIN_CHRR_NDH_DROUGHT_HFD

Distribution_Liability:

Not Available

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ASCII
Format_Name: PNG
Format_Name: PDF

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://sedac.ciesin.columbia.edu/

Access_Instructions:

DATA CENTER URL

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://sedac.ciesin.columbia.edu/wdc/

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://sedac.ciesin.columbia.edu/data/set/ndh-drou...

Access_Instructions:

Data download page.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://reverb.echo.nasa.gov/reverb/#utf8=%E2%9C%93...

Access_Instructions:

Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:: http://sedac.ciesin.columbia.edu/data/set/ndh-drou...

Access_Instructions:

Maps in PDF and PNG formats.

Fees: 0

Metadata_Reference_Information:

Metadata_Date: 20050929

Metadata_Review_Date: 20130213

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: CIESIN METADATA ADMINISTRATION

Contact_Position: DIF AUTHOR

Contact_Address:

Address_Type: Mailing and Physical Address
Address: 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

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