A new dataset of global irrigation areas from 2000 to 2015

We provide global irrigation maps

README FOR GLOBAL IRRIGATION MAPS
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Prediction Maps
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v3b_combined_*.tif: GeoTIFF files with model predictions, from 2001 to
 2015.  0=not irrigated, 1=low-to-medium irrigated, 2=highly irrigated.

Two of these are available in PNG format as well: 2001, 2015

Difference Between 2001 and 2015
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diff2001vs2015.tif: 0=no difference, 1=large decrease, 2=decrease,
3=no change, 4=increase, 5=large increase

Also available in PNG format.  Dark green=large decrease,
green=decrease, grey=no change, orange=increase, red=large increase

Assessment Map
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assessment_map.tif: FN=false negatives, FP=false positives, TP=true 
positives, mask=cropland mask