Nada Posted April 5, 2019 Report Share Posted April 5, 2019 Hi all, I am a remote sensing beginner and was hoping to find an answer to my question here. I am trying to use MODIS GPP product 8-day composite for yearly calculation. I need this specific product to figure out the GPP of an area in an annual time series but not sure how to use the 8-day composite as yearly. Please help. Thank you. Quote Link to comment Share on other sites More sharing options...
Nada Posted April 5, 2019 Author Report Share Posted April 5, 2019 Since the fractions represent the daily average rates of GPP for an 8-day period, do I multiply the sum of 8-day composite fractions of GPP by 8? Quote Link to comment Share on other sites More sharing options...
sigologo Posted May 13, 2019 Report Share Posted May 13, 2019 Hi Nada!!!! Before All!!! You know the handbook Modis GPP? https://modis.gsfc.nasa.gov/data/dataprod/mod17.php Now. What do you want to do with your data for an annual time series? and sorted by months? the image that you download is a composite of the maximum value of GPP for that period, which should be added month by month as appropriate!! Tell me! What do think about this now. Reagrds! Quote Link to comment Share on other sites More sharing options...
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