I have been trying to download 4 bands of the Hansen forest change data from GEE, and need the rasters to span the entire world. I have been using the following code to do so:

var myStringArrayGFW = ['treecover2000','loss','gain','lossyear'];
var dataset_name = "UMD/hansen/global_forest_change_2020_v1_8"; 
var dataset = ee.Image(dataset_name);
var myStringArray = myStringArrayGFW;
myStringArray.forEach(function(s) {
  var name = dataset_name.replace(new RegExp('/', 'gi'),'-');
  var data = dataset.select(s); 
    image: data,
    description: name+"-"+s, 
    scale:5000, //5x5km
    maxPixels: 1e13,

Running this seems to work, as I can then save the files to my google drive, but the tifs I get are only a fraction of the size I need them to be (see picture below).This is what I get for example, a 125ko file.

How would I go about fixing my code such that it downloads the entire rasters?

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    – Vince
    Mar 27, 2022 at 18:13
  • Thanks @Vince, updated my question to reflect this.
    – Alex
    Mar 28, 2022 at 13:52

1 Answer 1


Specify a region spanning the whole world (easiest way is as a non-geodesic polygon that doesn't touch the poles); you're just getting whatever the code editor happens to be looking at when you start the Export.

    image: data,
    region: ee.Geometry.Polygon([
        -180, 88, 
           0, 88, 
         180, 88, 
         180, -60, 
           0, -60,
        -180, -60], null, false]),
  • Ah that does it, great thank you!
    – Alex
    Mar 28, 2022 at 18:39

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