To get an overview of global rainfall variability, a
pixel-by-pixel classification has been performed (see Figure 1).
Each of the marked 4 countries, as can be better seen in the zoomed
cut-outs of Figure 1, incorporate several different rainfall classes.
Methodology applied on the global scale is refined and applied with
higher spatial and temporal resolution in these countries in the period
1983 to 2002. The countries chosen are