The last chapter of my PhD dissertation was published earlier this year in the International Journal of Applied Earth Observation and Geoinformation. From conception to publication, this paper took about two-and-a-half years of work. It signifies the end of my PhD era, so to speak. The idea came from my supervisor, who suggested that testing the relatively new Plant Phenology Index (PPI) in semi-arid biomes would be a worthwhile cause because its only been evaluated in the boreal biome.
For a country that has been at the bottom of global rankings on the basis of transparency, human development, passport power, and safety, oil is seen as a source of hard currency to turn things around and fuel development.
On 2 December 2018, the United States Department of State announced the re-establishment of “permanent diplomatic presence” in Somalia nearly three decades after closing the US embassy in Mogadishu at the onset of the Somali conflict in 1991.
Somalia is mostly dry and semi-arid with the exception of few areas of greenery in the northern mountains or the riverine agricultural fields in the south. Since the acceleration of violence in the late 1980s that propelled it into civil war, two things have been occurring in Somalia on a more or less regular basis: conflicts and famines, and both have been linked, in one way or the other, to climate change
There’s a neat little function in the MODIS package called runGdal that allows, with just a few lines of code, to a) download MODIS data over particular vertical and horizontal coordinates b) extract the desired layer(s) from the HDF-EOS file c) reproject and mosaic your data, and d) save your imagery in geotiff format.
Satellite time series data are useful for studying biophysical how variables change over time and understanding what causes those changes. Recently, I was looking into correlating two time series datasets over Africa to look at the relationship between net primary production (NPP) and rainfall.After a futile attempt to find an “out-of-the-box” software package that does this, I created an R function to speed things up.