At approximately 1 km resolution (30" X 30"), LandScan is the finest resolution global population distribution data available and represents an ambient population (average over 24 hours). The LandScan algorithm uses spatial data and imagery analysis technologies and a multi-variable dasymetric modeling approach to disaggregate census counts within an administrative boundary. Since no single population distribution model can account for the differences in spatial data availability, quality, scale, and accuracy as well as the differences in cultural settlement practices, LandScan population distribution models are tailored to match the data conditions and geographical nature of each individual country and region.
"The LandScan Global Population Databases, developed at the Department of Energy's Oak Ridge National Laboratory, represent the finest resolution global population distribution databases available"--Legend on 2000 (East View Geospatial version, viewed March 22, 2013).
