Approach: I just read the data from the original data file and flip the latitude arrange from original 90N->90S to 90S->90N.

  Temporal resolution: yearly

  General information: This product was derived from Harmonized World Soil Database (HWSD) v1.2 dataset.

  Spatial resolution: 0.5x0.5 degree

  Derived data code: http://redwood.ess.uci.edu/mingquan/www/ILAMB/Download/CODES/CODES/subroutines/convert/convert-soilc-HWSD.ncl