1.  summary:
    A 60-level topography generated for the traditional POPx1
    horizontal mesh (horiz_grid_20010402.ieeer8).

2.  created by: Steve Yeager
 
3.  date and time: Dec 2006

4.  platform:   tempest
 
5.  dataset format: ieeei4
 
6.  endian: big
    
7.  archival copy location:
       /CCSM/inputdata/ocn/pop/gx1v5/grid/topography_20061229.ieeei4
       /CCSM/inputdata/ocn/pop/gx1v5/grid/topography_20061229.source
       /CCSM/inputdata/ocn/pop/gx1v5/source/mk_topo.csh
       /CCSM/inputdata/ocn/pop/gx1v5/source/pop_depths_new.f
       /CCSM/inputdata/ocn/pop/gx1v5/source/topography_e2b.f
       /CCSM/inputdata/ocn/pop/gx1v5/source/etopo_merge_bedmap.da

8.  creation details:
    ran /fis/cgd/oce/yeager/POP_grids/gx1v5.006/mk_topo.csh 
	which incorporates a new 60-level vertical discretization
	(gx1v5_vert_grid), which in turn was generated using
	/fis/cgd/oce/yeager/POP_grids/vertical_grids/pop_depths_new.f.

    mk_topo.csh invokes the fortran code
	/fis/cgd/oce/yeager/POP_grids/tools/gridgen/topography_e2b.f
        which computes ocean model bathymetry by comparing to the
	2minx2min etopo dataset:
	/project/oce/bryan/etopo_merge_bedmap.da
	
    input settings used in mk_topo.csh were 
	set nsmoothh = 1		; smooth bathymetry 1 time
	set nsmoothk = 0		; don't smooth k
	set removeisolatedpts = 1	; remove isolated points
	set removeisolatedrgs = 0	; don't remove isolated ridges
	set minh = 5.			; set minimum depth of 5m
	set minkmt = 3			; set minimum kmt of 3
    
    after running mk_topo.csh, hand edits were made to the resulting kmt
   	array using /fis/cgd/oce/yeager/POP_grids/gx1v5.006/handedit_kmt.run
 
9.  derived from:
    /fis/cgd/cseg/csm/inputdata/ocn/pop/gx1v3/grid/horiz_grid_20010402.ieeer8
    /fis/cgd/oce/yeager/POP_grids/gx1v5.006/grid/gx1v5_vert_grid
    /project/oce/bryan/etopo_merge_bedmap.da
 
10. code, scripts, namelists, etc, used to create this file:
	see # 8.