1.  summary:		conservative runoff mapping between r05 and gx3v6

2.  created by:		Steve Yeager
 
3.  date and time:	Dec 16, 2004

4.  created on: 	dave
 
5.  dataset format: 	nc
 
6.  endian:		n/a
 
7.  archival copy location:
 
8.  creation summary:
 
The following is a description of how the netcdf mapping file
between r05 and gx3v6 grids was produced.

run /fis/cgd/oce/yeager/POP_grids/gx3v6/mk_runoff_remap.csh

	(Use r05_nomask.nc grid which has had the poles clipped
	 to 89.99 using POP_GRIDS/idl_tools/polecut_atmgrid.run)

This generates a 'raw' r05 to gx3v6 mapping, map_r05_to_gx3v6.nc,
and an output runoffmap.out which has NO problem links (!).

Then, use Yeager's runoff mapping tools to correct/smooth/test
the runoff mapping (see /fis/cgd/oce/yeager/POP_tools/runoff/README).
I compiled and ran main.F90 with the following settings:

   file_orig   = '/fs/cgd/data0/yeager/map_r05_to_gx3v6.nc'     ! scripv1.4
   file_corr   =  'r2o.nc'
   file_smooth =  'smoother.nc'
   file_new =   'map_r05_to_gx3v6_roff_e2000r500.nc'
   title = "conservative r05 to gx3v6 runoff map with smoothing"
   efold = 2000000.                             ! efold in meters
   rmax = 500000.

This generated the file map_r05_to_gx3v6_roff_e2000r500.nc, and the output
log /fis/cgd/oce/yeager/POP_grids/gx3v6/coupled.gx3v6