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Impacts & Adaptation

Impacts & Adaptation

Download and resampling of MODIS images - spatial-analyst.net his article explains how to automate download, mosaicking, resampling and import of MODIS product to a GIS. We focus on the one of the most known MODIS products for terrestrial environmental applications: the Enhanced Vegetation Index (EVI), which is the improved NDVI (Huete et al., 2002; see the complete list of MODIS products). EVI corrects distortions in the reflected light caused by the particles in the air as well as the ground cover below the vegetation. The EVI also does not become saturated as easily as the NDVI when viewing rainforests and other areas with large amounts of chlorophyll. EVI can be directly related to the photosynthetic production of plants, and indirectly to the green biomass (Huete et al., 2002). By observing dynamics of EVI for an area of Earth's surface, we can infer about the vegetation dynamics within season, but also detect long-term trends and sudden changes in the biomass (e.g. due to forest fires, deforestation, urban growth and similar). References

Hypoxia Resources/Publications/Press | PISCO Resources Handouts Videos Images Publications Committee on Environment and Natural Resources. 2010. Chan, F., J.A. Grantham, B. Barth, J.A., B.A. Glenn,G., R. Buck, . (Disclaimer: Due to Copyright law, not all publications have public access) Selected Press

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