Authored by Andy Nelson, University of Leeds, Leeds, UK. a.d.nelson@leeds.ac.uk and based on previous documentation and methods by Uwe Deichmann, The World Bank, Washington D.C. udeichmann@worldbank.org
Contents
Introduction
Part I: Boundary and population data
Boundaries
Population data
Estimation of population figures
Census data
Additional sources of error
Part II: Raster data
Summary description of the method
Construction of the transportation network
Setting up urban data
Run accessibility calculation
Interpolation
Adjustment of the accessibility measure
Distribution of population
References
Download Data
Appendixes
1. Illustrative example of the stability of population estimates
2. Africa population database - summary table
3. Attribute item definitions
4. Country-specific documentation
5. Map of administrative units in Africa
6. Population density maps for 1960, 1970, 1980, 1990 and 2000
7. Roads used in the accessibility model
8. Populated places used in the accessibility model
Acknowledgments 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.
