Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.
The Urban Interface layer describes ambient population as approximately 11- 100 persons per square kilometer.
Urban Interface layer was used in the development of coarse scale spatial data for wildland fire and fuel management.
The LandScan Global Population Project is a worldwide population database at 30" X 30" resolution for estimating ambient populations at risk. Best available census counts are distributed to cells based on probability coefficients which, in turn, are based on road proximity, slope, land cover, and nighttime lights. Implementation will proceed region by region to complete global coverage in approximately one year. Version 1.2 has been completed for the entire world. 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.
No third party distribution of all, or parts, of the electronic files is authorized.
Oak Ridge National Laboratory http://www.ornl.gov/gist/projects/LandScan/landscan_doc.htm#Best%20Available%20Population
Internal feature number.
Area of feature in internal units squared.