%-----------------------------------------------------------------------
  % This is the final MERIT degree-2160 reference surface that is 
  % rigorously consistent with the artefact-repaired MERITR1 data set
  % CH 2017-11-29 
   case {'MERIT2017R1_to2160_from15secSHA'  'MERIT2160'}  % derived from a degree-43200 grid
   GGM_type    = 'TOPO'  ;
   GGMfilename = 'MERITR1.AIR.15secSHA_to2160.bshc';
   GGMpath     = 'SHCs_Topography/';
   GGM_maxdeg  = 2160;