| Site Index |
|
|
Digital Spatial DataLandScan LandScan
has been developed as part of the Oak
Ridge National Laboratory (ORNL) Global Population Project for
estimating ambient populations at risk. The ORNL has developed an
automated procedure to allocate rural and urban population
distributions worldwide on a 30" X 30" latitude/longitude
grid. The resulting population distribution can
Overview of the 1998 dataset: LandScan 1998 CD includes additional files; i.e. basemaps & ArcView Legend files. The major project file (landscan.apr) can be loaded directly from the CD, which requires ArcView 3.x with Spatial Analyst extension to run. In addition, the grids and shape files can be loaded individually into your own ArcView projects. Legend files (*.avl) are provided. For example, LandScan 1998 has WORLD GRIDS (30-second cells) files and Legend files:
Comments for the AGSL? Send them to agsl@uwm.edu. |
be used for (a)
emergency response to natural disasters, terrorist incidents, or other
threats; (b) humanitarian relief in famines and other long term
disasters; (c) protection of civilian populations; (d) estimation of
populations affected by global sea level rise; and (e) numerous other
environmental and demographic applications. Global coverage has been
completed. Verification and validation (V&V) studies have been
conducted routinely for all regions and more extensively for portions
of the Middle East and the Southwestern United States Census counts (at
sub-national level) were apportioned to each grid cell based on
likelihood coefficients, which are based on proximity to roads, slope,
land cover, nighttime lights, and other data sets. The LandScan files are
available via the internet in ESRI grid format by continent and for the world,
and in
ESRI raster binary format for the world.
The LandScan data is updated by the ORNL. For
more information, please visit to