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SVN $Id: README 35698 2012-03-22 23:59:57Z kauff $
SVN $URL: https://svn-ccsm-models.cgd.ucar.edu/tools/mapping/trunk_tags/mapping_121113b/gen_mapping_files/runoff_to_ocn/README $
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           How to create a runoff map for CCSM4

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 Setup a namelist file
 Build the tool
 Run the tool
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Input files are an ascii rdirc file and a script ocean grid file.
This computes an initial nearest neighbor mapping from rdirc output
  cells to active ocean grid cells.
Then a smoothing matrix is computed.
The two matrices are multipled together and a final mapping file is
  produced.

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timings
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bluefire, interactive, in /ptmp, June 29, 2008

  &input_nml
   file_rtm     = '/fs/cgd/csm/mapping/makemaps/mod_rtm_routing/rdirc.06.080627.txt'
   file_ocn     = '/fs/cgd/csm/mapping/grids/tx0.1v2_070911.nc'
   file_nn      = 'map_nn_r080627_tx01v2_080629.nc '
   file_smooth  = 'map_smoother_r080627_tx01v2_080629.nc '
   file_new     = 'map_r05_to_tx01v2_r500e1000_080620.nc'
   title        = 'runoff map: r05 -> tx01v2 '
   eFold        = 1000000.0
   rMax         =  500000.0
   step1        = .true.
   step2        = .true.
   step3        = .true.
  /

(shr_timer_print_all) print all timing info:
(shr_timer_print) timer  1:       1 calls,   114.740s, id: Step 1: Grid Read, Gen NN
(shr_timer_print) timer  2:       1 calls,   482.360s, id: Step 2: Create the smoothing map
(shr_timer_print) timer  4:       1 calls,    44.710s, id: Step 3:  Matrix Multiply