First, your file sizes are as expected. When you go from 1000m per pixel, to 30m per pixel, you get 1111-times increase in size, which is close to what you see from 2 MB to 3.4 GB, once you also consider compression etc. The calculation is: (1000 m/ 30m)^2 = 1111.1 It is squared due to the raster being a 2d array. The whole point of STARFM, or ESTARTFM (a ...


If you have gdal, you can try gdal_translate -outsize 3333.33% 3333.33% -r bilinear input.tif output.tif

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