Population Related Activities


Global Demography Project

Population Data for Africa

UNEP/CGIAR Initiative - Pop data for Asia

Interesting links

The Global Demography Project

[click on the map for a larger version]

The global demography project is an effort to generate consistent, spatially referenced global population data sets for global and regional environmental analysis, demographic research, etc. This project has been supported by the Consortium for International Earth Science Information Network (CIESIN) , the Environmental Systems Research Institute (ESRI) and NCGIA. Output from the first stage of the project includes a set of raster data sets of population density and total population figures. For each, a smoothed and an unsmoothed version exists. The smoothed images were produced using Waldo Tobler's pycnophylactic interpolation. These images have a resolution of 5 minutes and are based on source population and boundary data for more than 15,000 administrative units. The project is described in detail in NCGIA Technical Report 95-6 "The Global Demography Project" by Waldo Tobler, Uwe Deichmann, Jon Gottsegen, and Kelly Maloy. The full report including maps and illustrations can be obtained from NCGIA Publications ncgiapub@ncgia.ucsb.edu. The raster images are distributed by CIESIN and can be viewed on CIESIN's website.

Population Data for Africa

Several population databases for Africa have been compiled. A first, medium resolution database for Africa had been compiled for a related project on African farming systems which was supported by the Rockefeller Foundation and NCGIA.
A more recent, updated database consists of boundaries for about 4500 administrative units and population estimates for 1960, 70, 80 and 90. Again regular raster grids of population density have been developed from these data sets which are distributed from the UNEP/GRID Sioux Falls website. This work was supported by UNEP/GRID Sioux Falls and the World Resources Institute.

UNEP/CGIAR Initiative - Pop data for Asia

Use of Geographic Information Systems in Agricultural Research

This is a joint project of the United Nations Environment Programme / Global Resource Information Database (UNEP/GRID) and the Consultative Group for International Agricultural Research (CGIAR), implemented by UNEP/GRID-Arendal, with three major objectives:

The third objective has led to a number of initiatives to improve global demographic data holdings. This includes updating of data holdings for Latin America by CIAT , and an update and enhancement of the Asian data compiled for the global demography project by NCGIA and UNEP/GRID-Geneva. The documentation and data sets for are available at UNEP/GRID Geneva, Switzerland and UNEP/GRID Sioux Falls, South Dakota, USA.

Some sample maps for Asia:

Note: the surfaces are slightly smoothed for visual presentation; the actual resolution is higher.

Also, a review paper on population databases and modeling has been published as NCGIA Technical Report TR 96-3.

For more information about the UNEP/CGIAR Initiative contact GRID Arendal (heberlein@grida.no) .

Other sites of interest