Population Density for Africa in 1970

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Andy Nelson, University of Leeds
Publication_Date: 20041006
Title: Population Density for Africa in 1970
Edition: fourth
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: UNEP/GRID Sioux Falls, SD, USA
Publisher: UNEP/GRID Sioux Falls
Online_Linkage: <http://www.na.unep.net/datasets/datalist.php3>
Online_Linkage:
ogc:WMS-1.0.7-http-get-map <http://igskmncngs061.cr.usgs.gov/wmsconnector/com.esri.wms.Esrimap?BBOX=-54,-49,80,65&WIDTH=600&HEIGHT=400&SRS=EPSG:4326&Layers=2&version=1.1.1&service=WMS&FORMAT=JPEG&TRANSPARENT=TRUE&request=getmap&ServiceName=wms_africapop> [1970 Africa Population]
Description:
Abstract:
This documentation describes the fourth version of a database of administrative units with associated population figures for Africa. The first version was compiled for UNEP's Global Desertification Atlas (UNEP 1992, Deichmann and Eklundh 1991), while the second version represented an update and expansion of this first product (Deichmann 1994, WRI 1995), and the third was another update and expansion (Deichmann 1997).

This new version for Africa provides considerably more detail: more than 109,000 administrative units (83,000 of which are in South Africa), compared to about 800 in the first, 2,200 in the second version and 4,700 in the third. In addition, for each of these units a population estimate was compiled for 1960, 70, 80, 90 and 2000 which provides an indication of past population dynamics in Africa.

Purpose:
The African population database is part of an ongoing effort to improve global, spatially referenced demographic data holdings. Such databases are useful for a variety of applications including strategic-level agricultural research and applications in the analysis of the human dimensions of global change.
Supplemental_Information:
The population figures attached to the GIS database represent estimated totals for the standardized years 1960, 70, 80, 90 and 2000. Data sources vary by country. In general we attempted to obtain population data from each census that has been carried out at the geographical level for which boundary data were available. Where official population estimates or projections were available from the national statistical office, these were used as well.

In order to provide an indication of population dynamics and to maximize comparability across national boundaries, population estimates were produced for 1960, 70, 80, 90 and 2000.

The development of this database was supported by the:

United Nations Environment Programme / Global Resource Information Database (UNEP/GRID), Sioux Falls. Center for International Earth Science Information Network (CIESIN), Columbia University NY.

***** Spatial Reference Information (Beg) *****

Projection Parameters Geographic Units: DD Datum: WGS84

Spatial Information Raster: Number of Columns: 2160 Number of Rows: 1800 Pixel Resolution (m): 2.5km (2.5 minutes) Data Type: integer

***** Spatial Reference Information (End) *****

Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1970
Ending_Date: 1970
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -26
East_Bounding_Coordinate: 64
North_Bounding_Coordinate: 39
South_Bounding_Coordinate: -36
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Population
Theme_Keyword: población
Theme_Keyword: população
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Africa
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 1970
Access_Constraints: None
Use_Constraints:
UNEP/GRID does not place any restrictions on the use of this data, but does request that users cite UNEP/GRID (and any other sources mentioned in documentation of the data provided) as data furnisher(s). Users of data sets supplied through UNEP/GRID are requested to incorporate in output products and reports acknowledgements to the originator of the data and to the fact that they were acquired through UNEP/GRID. Please cite data as follows: Nelson, Andy, 2004. African Population Database, UNEP GRID Sioux Falls. Retrieved "date of download" from Please cite documentation as follows: Nelson, Andy, 2004. African Population Database Documentation, UNEP GRID Sioux Falls. Retrieved "date of download" from
Browse_Graphic:
Browse_Graphic_File_Name: <http://www.na.unep.net/globalpop/africa/afpopd70.gif>
Browse_Graphic_File_Description: Population Density for Africa in 1970 (low resolution PNG)
Browse_Graphic_File_Type: PNG (Portable Network Graphics)

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Customer Service
Contact_Organization: UNEP/GRID
Contact_Address:
Address_Type: Mailing and Physical Address
Address: UNEP/GRID-Sioux Falls EROS Data Center U.S. Geological Survey
City: Sioux Falls
State_or_Province: South Dakota
Postal_Code: 57198
Country: USA
Contact_Voice_Telephone: 605-594-6107
Contact_Facsimile_Telephone: 605-594-6119
Contact_Electronic_Mail_Address: info@na.unep.net
Resource_Description: Population estimates for Africa in 1970
Distribution_Liability:
The African population database was compiled from a large number of heterogeneous sources. The objective was to compile a comprehensive database from existing sources and in a fairly short time period that is suitable for regional or continental scale applications. The resources available did not allow for in-country data collection or collaboration with national census bureaus as was done, for example, in the WALTPS study. With few exceptions, the data sets do not originate from the countries themselves, and none of the input boundary data have been officially checked or endorsed by the national statistical or mapping agencies.

Metadata_Reference_Information:
Metadata_Date: 20041006
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Customer Service
Contact_Organization: UNEP/GRID
Contact_Address:
Address_Type: Mailing and Physical Address
Address: UNEP/GRID-Sioux Falls EROS Data Center U.S. Geological Survey
City: Sioux Falls
State_or_Province: South Dakota
Postal_Code: 57198
Country: USA
Contact_Voice_Telephone: 605-594-6107
Contact_Facsimile_Telephone: 605-594-6119
Contact_Electronic_Mail_Address: info@na.unep.net
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

Generated by mp version 2.6.0 on Wed Oct 06 20:51:56 2004