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Updated: April 23, 2002

 
Maps: Demography
Spain's and Portugal's population density: a digital elevation model (DEM) with overlay of stable night lights

Source:

 Images used with permission from CEOS GLOBE Task Team, World Data Center - A, National Geophysical Data Center (Head: David Hastings)
The colors from the original map images were edited for greater visual clarity.

Note:

 This map is a combination of two maps: (1) a Global Land One-km Base Elevation (GLOBE) map with topographic color and shaded elevation relief with bathymetry from Smith and Sandwell; 
and (2) a map of stable lights (cities, villages, gas flares, etc.) from the Defense Meteorological Satellite Program.
Please note that the colors were edited for greater visual clarity.
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European Rural Development (ERD) Project.  Copyright © 2002 by IIASA. All rights reserved.