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Interpreting output from Forestry TEP Sentinel-2 Forest Change processor
Hello, new user here so apologies if this is a very simplistic question I have used the F-TEP forest change processor to generate a tiff. output but now I am struggling to work out how to interpret it using either the ESA SNAP program, QGIS or ArcGis, where can I find information on how to interpret what the default colour ramp means in terms of where forest cover change has occurred? Thanks, Ben

Dear BenBlack,

Thank you for your question and congratulations on being the first user on the forum to post an actual question!

Output from the forest change service is a GeoTIFF, which is best observed on the platform with QGIS. When you have the output product visible (e.g. you see the processing job output listed), select the QGIS service, and drag the job output from its handle to the QGIS input data parameter field. Then launch QGIS, and after a moment click the small arrow button that appears in the jobs list to open the software.

Interpretation of the forest change map - the result is a red reflectance ratio, where high (light) values reflect high change, and low (dark) values reflect little change. Cloud masks are pure white, and you may see black artifacts from any cloud shadows as well. The key in successful use is finding cloud-free data. This is more closely explained here: https://f-tep.com/?q=content/forest-change-using-sentinel-2-data

Best regards,

-Renne / Forestry TEP