U.S. Census Grids (Summary File 1), 2000
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https://earthdata.nasa.gov/data/catalog/sedac-ciesin-sedac-uscg-sf1-1.00
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资源简介：
The U.S. Census Grids (Summary File 1), 2000 contain grids of demographic and socioeconomic data from the year 2000 U.S. Census in ASCII and geotiff formats. The grids have a resolution of 30 arc-seconds (0.0083 decimal degrees), or approximately 1 square km. The gridded variables are based on census block geography from Census 2000 TIGER/Line Files and census variables (population, households, and housing variables). This data set is produced by the Columbia University Center for International Earth Science Information Network (CIESIN).
提供机构：
Palisades, NY: NASA Socioeconomic Data and Applications Center (SEDAC)
创建时间：
2014-04-03
