October 31, 2010
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Map Copyright
Physical map tiles (C) 2010 Jared Updike. All rights reserved.
Using custom software[1] the map combines various public domain datasets:
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2 Elevation data sets. SRTM data courtesy USGS. (Description on NASA website.) GTopo30 Digital Elevation Model data courtesy USGS.
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12 Monthly color vegetation/snow datasets (visible spectrum). Blue Marble Next Generation data courtesy NASA.
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9 Vector datasets for Water Features. Rivers, lakes, islands, shorelines courtesy Natural Earth Data. Rasterized with Mapnik and Python.
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Bathymetry data courtesy NASA.