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Showing results for tags 'desertification NDVI'.

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  1. Hi, I have a project to map 'Current' Desertification in Tunisia. I need to produce a 1:800,000 map. My Initial Idea is to measure desertification through an NDVI to classify desertification using LandSat 8 images as a data source. Questions: Is LandSat 8's spatial resolution suitable to map a 1:800,000 scale map? Should I use one year of images i.e monthly 2014 images or a longer time frame such as 10 years of monthly images or be even more specific i.e daily? to get a mean NDVI score, or should I not use a mean score? Would all the images I have to use need to be corrected for atmospheric variation even though I have used the same satellite? Thanks in advance!
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