1.  summary:		gx3v5 topography

2.  created by:		Steve Yeager
 
3.  date and time:	August 6, 2003

4.  created on: 	dataproc
 
5.  dataset format: 	ieeei4
 
6.  endian:		big
 
7.  archival copy location:
    archival read password: CCSMPOP
 
    also
 
    /CCSM/inputdata/ocn/pop/gx3v5/grid/topography_20030806.ieeei4
    /CCSM/inputdata/ocn/pop/gx3v5/grid/topography_20030806.readme
    with write password "rusure"
 
 
8.  creation summary:
	cd /fs/cgd/data0/yeager/POP_GRIDS/gx3v5.012
        mk_grid.csh

        (Actual code invoked is /fs/cgd/data0/yeager/POP_GRIDS/bin/topography
        from a pwd of /fs/cgd/data0/yeager/POP_GRIDS/gx3v5.012 with input:
	cat >! input.topography << EOF
	100 116 25
	grid.plot.da
	L25_vert_grid
	1
	h.da
	5.
	5
	1
	0
	3
	1
	kmt.da
	EOF
	)

 	This generates a 'kmt.da' topography file given the inputs
	grid.plot.da AND L25_vert_grid.  However, a significant effort
	was expended to hand-modify the kmt.da generated for test
	case gx3v5.010 (same grid.plot.da as gx3v5.012, but with 40	
	vertical levels rather than 25).  In order to avoid redoing
	the hand-editing of kmt following the switch to L25_vert_grid,
	wrote the idl routine kmt_diff_same_horiz_grid.run to modify
	the gx3v5.012 kmt.da based on the gx3v5.010 kmt.da.

	idl < /fs/cgd/data0/yeager/POP_GRIDS/idl_tools/kmt_diff_same_horiz_grid.run
	mv kmt.da.new kmt.da
 
9.  derived from:
	/fs/cgd/data0/yeager/POP_GRIDS/gx3v5.012/grid.plot.da 
        /fs/cgd/data0/yeager/POP_GRIDS/gx3v5.012/L25_vert_grid
            (generated using /home/dataproc/yeager/CCSM/lowres/pop_depths.f
            with settings 
                &  km = 25             ! number of vertical levels
                &  zmax    = 5000.0,   ! max depth in meters
                &  dz_sfc  =   8.0,   ! thickness of surface layer
                &  dz_deep =  500.0,   ! thickness of deep ocean layers
                &  eps     = 1.e-6     ! convergence criterion
            )
	AND a previous gx3v5 topography array
	/fs/cgd/data0/yeager/POP_GRIDS/gx3v5.010/kmt.da
 
10. code, scripts, namelists, etc, used to create this file:
	/fs/cgd/data0/yeager/POP_GRIDS/gx3v5.012/mk_grid.csh
	/fs/cgd/data0/yeager/POP_GRIDS/idl_tools/kmt_diff_same_horiz_grid.run