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Hi Brett, thank you so much for getting back with this info. I’ve been looking into using the Npp_QC_500m layer and using it to check values with the NPP data. I’m looking at doing the same thing for the GPP data as well, but I just wanted to double check which QC layer to use? Is the Psn_QC_500m la...

Hi, I wanted to ask a question about valid values of NPP and GPP for MOD17A3HGF files. I’ve removed some fill values ie above 30,000 as recommended in the report "User’s Guide, GPP and NPP (MOD17A2/A3) Products NASA MODIS Land Algorithm" which states that "All pixels without a GPP cal...