Africa Water Balance high/lowland crops, 1987

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Africa Water Balance high/lowland crops, 1987
Description:
Abstract:
The Africa Water Balance data set which is prepared by watershed and by country, belongs to the group of "Irrigation and Water Resources Potential" study. It covers 55 countries and 25 major basins which contain 335 watersheds. The digitized data base for Africa and the World was originally prepared for an FAO/UNEP project on Desertification in 1982-1984. UNEP financed preparation and analysis of the digitized map data and FAO prepared the data and methodology. The main input maps (all in Miller Oblated Stereographic projection) are the 1975 UNESCO Geological Map of Africa (originally at a scale of 1:10 million); the FAO/UNESCO Soil Map of Africa; Mean Annual Rainfall Map from hand drawn FAO/AGS climate maps; Template; Watersheds; and Administrative Units map - all at a scale 1:5 m. The methodology was based on water balance approach. This determines the suitability of the soil for irrigation and estimates the amount of water the soil requires. Estimates of the surface and groundwater are then compared to the potential irrigation use. If use exceeds available water resources, the irrigable area is correspondingly reduced; in the event of water surplus, some of the water is routed to the downstream basin. The classification was done for two major crop types: lowland crops (flooded rice), and upland crops (for all other irrigated crops except lowland crops). For further details refer to FAO contact for the 1987 FAO Irrigation and Water Resources Potential for Africa AGL/MISC/11/87. FAO, Land and Water Development Division via Delle Terme di Caracalla, 00100, Rome, Italy Vector Member The file is in Arc/Info Export format. Reference: FAO. Irrigation and Water Resources Potential for Africa. (1987) FAO. Final Report UNEP/FAO world and Africa GIS data base (1984), unpublished publication of ESRI, FAO and UNEP. UNESCO. Geological Map of Africa (1975). Scale 1:5 000 000.
Purpose:
Not Available
Supplemental_Information:
Not Available
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -20.0
East_Bounding_Coordinate: 55.0
North_Bounding_Coordinate: 40.0
South_Bounding_Coordinate: -35.0
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: EARTH SCIENCE > AGRICULTURE > AGRICULTURAL ENGINEERING
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > AGRICULTURAL PLANT SCIENCE > IRRIGATION
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS
Theme_Keyword: EARTH SCIENCE > HUMAN DIMENSIONS > HABITAT CONVERSION/FRAGMENTATION > IRRIGATION > REGIONAL IRRIGATION
Theme_Keyword: EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL GOVERNANCE/MANAGEMENT > WATER MANAGEMENT
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GROUND WATER
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > WATERSHED CHARACTERISTICS
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > AQUATIC ECOSYSTEMS
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > AQUATIC ECOSYSTEMS > MARINE HABITAT
Theme_Keyword: GTOS > GLOBAL TERRESTRIAL OBSERVING SYSTEM
Theme_Keyword: Agriculture > Agricultural Practices > Irrigation
Theme_Keyword: Atmosphere > Climatic Issues > Agrometeorology
Theme_Keyword: Crops
Theme_Keyword: Environmental Monitoring > Monitoring Techniques > Water Flow Measurement
Theme_Keyword: Flooded Rice
Theme_Keyword: Freshwater > Drinking Water Supply > Water
Theme_Keyword: Freshwater > Freshwater Ecosystems > Watersheds
Theme_Keyword: Freshwater > Freshwater Resources > Subsurface Water
Theme_Keyword: Lowland Crops
Theme_Keyword: Terrestrial Ecosystems > Soils > Soil Capabilities
Theme_Keyword: Water Balance
Theme_Keyword: FARMING
Theme_Keyword: BIOTA
Theme_Keyword: ENVIRONMENT
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: INLAND WATERS
Theme_Keyword: OCEANS
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > AFRICA
Place_Keyword: CONTINENT > AFRICA > NORTHERN AFRICA
Place_Keyword: CONTINENT > AFRICA > WESTERN AFRICA
Access_Constraints: Public
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: JOHANNES AKIWUMI
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Head, Data and Information Management Section
Address: Division of Early Warning and Assessment (DEWA)
Address: United Nations Environment Programme
Address: P. O. Box 30552
City: Nairobi
Postal_Code: 00100
Country: Kenya
Contact_Voice_Telephone: (+254-20) 7624214
Contact_Facsimile_Telephone: (+254-20) 7624315
Contact_Electronic_Mail_Address: Johannes.Akiwumi@unep.org
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: UNEP/GRID-NAIROBI > Global Resource Information Database - Nairobi, Division of Early Warning and Assessment, United Nations Environment Programme
Contact_Person: JOHANNES AKIWUMI
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Head, Data and Information Management Section
Address: Division of Early Warning and Assessment (DEWA)
Address: United Nations Environment Programme
Address: P. O. Box 30552
City: Nairobi
Postal_Code: 00100
Country: Kenya
Contact_Voice_Telephone: (+254-20) 7624214
Contact_Facsimile_Telephone: (+254-20) 7624315
Contact_Electronic_Mail_Address: Johannes.Akiwumi@unep.org
Resource_Description: NBId0203_101
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://gridnairobi.unep.org/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date:
Metadata_Review_Date: 20120531
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
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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