U.S. Census Grids (Summary File 3), 2000: Metropolitan Statistical Areas
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https://cmr.earthdata.nasa.gov/search/concepts/C3550193270-ESDIS.html
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资源简介：
The U.S. Census Grids (Summary File 3), 2000: Metropolitan Statistical Areas data set contains grids of demographic and socioeconomic data from the year 2000 U.S. census in ASCII and GeoTIFF formats for 50 metropolitan statistical areas with at least one million in population. The grids have a resolution of 7.5 arc-seconds (0.002075 decimal degrees), or approximately 250 square meters. 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：
ESDIS
创建时间：
2006-05-31
