Sunday, June 15, 2008
Gridded Population of the World (GPW) Data is now available for 1990, 1995, 2000, and 2015 populations.
Per the data description:
In the GPW data set, the distribution of human population is converted from national or subnational units to a series of georeferenced quadrilateral grids. Land area, population counts, and densities for each 2.5-arc-minute grid cell are available for the globe and six continental regions. Also, land data and population counts are available for each country. GPW raster (grid) data are available via FTP in three formats: ASCII text, ArcInfo interchange files (.e00), and binary band interleaved by line (BIL). Maps of administrative boundaries and population density are in portable document format (.pdf) and may be printed.
Per the SEDAC website:
The Socioeconomic Data and Applications Center (SEDAC) is operated by the Center for International Earth Science Information Network (CIESIN), a unit of the Earth Institute at Columbia University based at Lamont-Doherty Earth Observatory in Palisades, New York.
SEDAC's missions are to synthesize Earth science and socioeconomic data and information in ways useful to a wide range of decision makers and other applied users, and to provide an "Information Gateway" between the socioeconomic and Earth science data and information domains.
In addition, the Center for International Earth Science Information Network (CIESIN) has recently released the 2008 TerraViva! SEDAC Viewer.
Per the CIESIN website:
The 2008 TerraViva! SEDAC Viewer has been updated with a wide range of new SEDAC data. This map viewer and standalone software application (Microsoft Windows-based) uses a powerful data-viewing engine and tools to enable the visualization and integration of hundreds of socioeconomic and environmental variables and layers, including a range of satellite-based data.
The update encompasses 51 ready-made maps, ten GeoData indicator collections with hundreds of variables, and other features—scatter plots, tabular data display, map image production, and Web-based download of additional data layers—that make the 2008 TerraViva! SEDAC Viewer such a valuable data exploration tool.
Produced in collaboration between ISciences and the NASA Socioeconomic Data and Applications Center (SEDAC) operated by CIESIN, these data sets build on a collection that includes the flagship SEDAC data set, Gridded Population of the World (GPW), and others. The 2008 version adds the following SEDAC data collections:
• The Human Appropriation of Net Primary Productivity (HANPP)
• Natural Disaster Hotspots: A Global Risk Analysis
• Global Poverty Mapping
• The Human Footprint and Last of the Wild, Version Two
• The Population, Landscape, and Climate Estimates (PLACE II)
• The Compendium of Environmental Sustainability Indicators