The goal of the MOD17 MODIS project is to provide continuous estimates of Gross/Net Primary Production (GPP/NPP) across Earth’s entire vegetated land surface. MOD17 GPP/NPP outputs are useful for natural resource and land management, global carbon cycle analysis, ecosystem status assessment, and environmental change monitoring. MOD17 is part of the NASA Earth Observation System (EOS) program and is the first satellite-driven dataset to monitor vegetation productivity on a global scale. (source: http://www.ntsg.umt.edu/project/mod17)
National Center for Atmospheric Research Staff (Eds). Last modified 06 Aug 2014. "The Climate Data Guide: MODIS GPP/NPP Project (MOD17)." Retrieved from https://climatedataguide.ucar.edu/climate-data/modis-gppnpp-project-mod17.