Woody vegetation and land cover changes in the Sahel of Mali (1967–2011)

Another very interesting publication using object based methods to detect single trees on very high resolution imagery is online.Raphael Spiekermann, Martin Brandt, Cyrus Samimi, Woody vegetation and land cover changes inthe Sahel of Mali (1967–2011), International Journal of Applied Earth Observation and Geoinformation, Volume 34, February 2015, Pages 113-121.It can be downloaded for free until … Continue reading Woody vegetation and land cover changes in the Sahel of Mali (1967–2011)

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Climate, Environment and Vegetation in the West African Sahel

Here's a press release summarizing parts of my PhD. It was released by the University of Bayreuth (http://www.uni-bayreuth.de/pressemitteilungen-html/121-Sahelzone/index.html) and IDW (http://idwf.de/-CREwAA) in German (thanks to Pierre Gosselin for translating). As I got many emails on this, we want to make clear at this point that we do not aim to question climate change with this article! It shall give background … Continue reading Climate, Environment and Vegetation in the West African Sahel

Converting GPCC gridded rainfall 1901-2010@0.5° to monthly Geotiffs

GPCC rainfall data contains the largest database worldwide, with over 90 000 weather-stations interpolated to a 0.5° grid. It includes S. Nicholsons dataset for Africa and is thus a good source for gridded monthly precipitation. It covers the period 1901-2010, however, it comes in a strange dataformat and it is a long way until we get … Continue reading Converting GPCC gridded rainfall 1901-2010@0.5° to monthly Geotiffs