3.3 Basins
The basin shapefiles were rasterized and resampled to the same size as
the 500 m MODIS grid cells. The rasters were then re-vectorized to
provide areal information for a polygon corresponding to the grid size
of MODIS data. Based on information from the ASTER GDEM, we extracted
the hypsometry of each basin using 100 m elevation bins (see Fig. 2).