This is a great idea and reasonable proposal. However, weather satellites can be used to detect rainfall/drought conditions as well as foliage density and so on. It seems to me that if you could get access to satellite data you would have a more complete dataset to work with. In principle, it would be a lot cheaper since the satellites are already there. While I think maybe they can do it, setting up high tech devices and communicating with them in the African wilderness sounds very difficult. Have the proposers looked in to other ways of getting the climate data they need?