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Download Earth |
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landmask • This is the 16K land/water mask from Natural Earth III
by Tom Patterson. The original image
is a 4.7 MB, 16,200 x 8,100 PNG, converted here to a 2.4 MB, 4-bit
grayscale GIF. Lower resolution versions (5', 10', 15' and 30') are also
available as datasets lmask5 etc for use in masking
(cell value 0-255 is land coverage 0-100%).
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Dataset | Res | Size bz2 | Size un | |||
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landmask.tar | 80" | 2.4 MB | ||||
lmask5.tar.bz2 | 5' | 652 KB | 8.9 MB | |||
lmask10.tar.bz2 | 10' | 236 KB | 2.2 MB | |||
lmask15.tar.bz2 | 15' | 129 KB | 1.0 MB | |||
lmask30.tar.bz2 | 30' | 45 KB | 260 KB |