Global Rural-Urban Mapping Project (GRUMP), Alpha Version

Metadata Updated: December 18, 2017

The Global Rural-Urban Mapping Project (GRUMP), Alpha Version consists of estimates of human population for the years 1990, 1995, and 2000 by 30 arc-second (1km) grid cells and associated datasets dated circa 2000. The data products include population count grids (raw counts), population density grids (per square km), land area grids (actual area net of ice and water), mean geographic unit area grids, urban extents grids, centroids, a national identifier grid, national boundaries, coastlines, and settlement points. These products vary in GIS-compatible data formats and geographic extents (global, continent [Antarctica not included], and country levels). A proportional allocation gridding algorithm, utilizing more than 1,000,000 national and sub-national geographic units, is used to assign population values to grid cells. Additional global grids are created from the 30 arc-second grid at 1/4, 1/2, and 1 degree resolutions. The Spatial Reference metadata section information applies only to global extent, 30 arc-second resolution. This dataset is produced by the Columbia University Center for International Earth Science Information Network (CIESIN) in collaboration with the International Food Policy Research Institute (IFPRI), The World Bank, and Centro Internacional de Agricultura Tropical (CIAT). (Suggested Usage: To allow analysis of urban and rural population figures based on a consistent global dataset.)

Access & Use Information

Public: This dataset is intended for public access and use. License: U.S. Government Work

Downloads & Resources



Metadata Created Date October 8, 2014
Metadata Updated Date December 18, 2017
Data Update Frequency irregular

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date October 8, 2014
Metadata Updated Date December 18, 2017
Publisher National Aeronautics and Space Administration
Unique Identifier C179001926-SEDAC
SEDAC Services (Socioeconomic Data and Applications Center (SEDAC))
Maintainer Email
Id {$oid: 55942a63c63a7fe59b4963da}
Public Access Level public
Data Update Frequency irregular
Bureau Code 026:00
Metadata Context
Schema Version
Catalog Describedby
Harvest Object Id b7186ac2-841b-47aa-9a44-7c6a1060c63b
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2009-05-08T00:00:00.000Z
Homepage URL
Language en-US
Data Last Modified 2009-05-08T00:00:00.000Z
Program Code 026:001
Related Documents
Rights None
Source Datajson Identifier True
Source Hash 8496946f49940d2412db839d92e2198ef828ad22
Source Schema Version 1.1
Spatial -180.0, -58.0, 180.0, 85.0
Temporal 1990-07-01T00:00.000Z/1990-12-31T23:59:59Z
Category GRUMP

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