Grid Generation

Grid Generation

ROMS uses an Arakawa "C" Grid. The grid can be specified using analytical functions or with a netcdf file. To create a netcdf grid file, there are several grid generation tools.

SEAGRID

A GUI-based Matlab program for creating curvilinear orthogonal grids with 4 corners

http://woodshole.er.usgs.gov/operations/modeling/seagrid/seagrid.html

Some useful m-files for working with SEAGRID are:

 join_cst.m: turn coastline segments into land mask polygons
 read_srtm30plus.m: read SRTM30+ worldwide 30sec (~1km) topography via Web Mapping Service
 available via SVN at
 
   svn co https://svn1.hosted-projects.com/cmgsoft/m_cmg/trunk/RPSstuff rps_stuff

GRIDGEN by Pavel Sakov

A C program for creating curvilinear orthogonal grids with an arbitrary number of corners

http://www.marine.csiro.au/~sakov/ (scroll down Pavel's page to the section on "orthogonal grid generation")