Global Change Master Directory (GCMD)

Data Sets

Services / Tools

Ancillary Descriptions

Are you using a browser that doesn't support JavaScript or have you disabled JavaScript?

If you have disabled JavaScript, you must re-enable JavaScript to use this page.
Or you can view this record using the Text Only Format.

Global Rural-Urban Mapping Project, Version 1 (GRUMPv1): Urban Extents Grid

Entry ID: CIESIN_SEDAC_GRUMPv1_EXT

[ Get Data ]
[ Update this Record ]

Summary

Abstract: The Global Rural-Urban Mapping Project, Version 1 (GRUMPv1) consists of estimates of human population for the years 1990, 1995, and 2000 by 30 arc-second (1km) grid. The urban extent grids distinguish urban and rural areas based on a combination of population counts (persons), settlement points, and the presence of Nighttime Lights . Areas are defined as urban where contiguous lighted cells from ...

Purpose: To provide a raster representation of urban areas (or urban mask) for use with GRUMP population grids or other data sets.

Related URL

Link: GET DATA

Description: Data download page.

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 85.0

S: -58.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: Center for International Earth Science Information Network (CIESIN)/Columbia University, International Food Policy Research Institute (IFPRI), The World Bank, and Centro Internacional de Agricultura Tropical (CIAT)

Dataset Title: Global Rural-Urban Mapping Project, Version 1 (GRUMPv1): Urban Extents Grid

Dataset Release Date: 2011

Dataset Release Place: Palisades, NY

Dataset Publisher: NASA Socioeconomic Data and Applications Center (SEDAC)

Version: 1.00

Data Presentation Form: raster, map

Online Resource: http://sedac.ciesin.columbia.edu/data/set/grump-v1-urban-extents

Temporal Coverage

Start Date: 1995-07-01

Stop Date: 1995-07-01

Location Keywords

CONTINENT > AFRICA > NORTHERN AFRICA > ALGERIA

CONTINENT > AFRICA > CENTRAL AFRICA > ANGOLA

Science Keywords

CRYOSPHERE > SEA ICE > ICE DEFORMATION > ICE SHELF-OCEAN DYNAMICAL INTERACTIONS

CRYOSPHERE > SNOW/ICE > ICE MOTION

ISO Topic Category

GEOSCIENTIFIC INFORMATION

INLAND WATERS

OCEANS

Platform

FIELD SURVEYS

Instrument

GPS > Global Positioning System

GPS RECEIVERS

Quality The measurements were made simultaneously using four Trimble 4000 SSE and one
4000 SST GPS receivers on the five survey points. The rapid static survey was
based on 12 measurements of 30 minutes duration each, and two hours intervals.
Two different softwares were used to elaborate the data: Topas Turbo and
GPSurvey. Topas Turbo solutions has a more regular trend, that's because the
Topas Turbo algorithm is probably more appropriate where the measurements are
strongly disturbed.

Use Constraints Property of PNRA for 5 years

Ancillary Keywords

(PACS) Geodesy and gravity

3-D Point

Data Set Progress

COMPLETE

Originating Center

Data Center

Universita di Bologna, Dipartimento di Ingegneria delle Strutture, dei Trasporti, delle Acque, del Rilevamento del Territorio, Italy

Data Center URL: http://www.distart.ing.unibo.it/

Data Center Personnel
Name: ALESSANDRO CAPRA Phone: +39-51-2093104 Fax: +39-51-6448073 Email: Alessandro.capra at mail.ing.unibo.it Contact Address: Viale del Risorgimento 2 City: Bologna Province or State: Emilia-Romagna Postal Code: 40136 Country: Italy

Distribution

Distribution Media: CDROM

Distribution Format: PC - DOS - ISO 9660

Fees: Free after 5th year

Creation and Review Dates

DIF Creation Date: 2004-02-23

Last DIF Revision Date: 2008-05-30

Reformat as FGDC document

View Text Only Format

[ Update this Record ]