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Nada

MODIS GPP calculation

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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.

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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?

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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!

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