can i combinate two parameters with different Temporal Granularity , i mean can i combinate image LST MODIS 8 days with image NDVI modis 16 days??
closed as unclear what you're asking by PolyGeo♦, Devdatta Tengshe, Jason Scheirer, BradHards, Fezter♦ Mar 24 '14 at 6:49
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You cannot do this in any reliable fashion. The reason is that every MODIS product (like LST) is created from a number of observations (basically, the MOD01 radiance product) and you do not know how that is done. The MOD11A2/MYD11A2 products do not give you the number of observations that go into each product, nor the extremes.
But if you really want to do it, it is very simply done by adding up the two images and dividing by 2 to get you the average temperature over the 16 days. Not a very solid plan though. At the very least you should check the QC_day/QC_night flags and only produce the average temperature for those pixels where the lower two bits in QC_day/QC_night are 00 or 01 in both source products.