Grid Generation: Difference between revisions
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A GUI-based Matlab program for creating curvilinear orthogonal grids with 4 corners | A GUI-based Matlab program for creating curvilinear orthogonal grids with 4 corners | ||
http://woodshole.er.usgs.gov/operations/modeling/seagrid/seagrid.html | http://woodshole.er.usgs.gov/operations/modeling/seagrid/seagrid.html | ||
SEAGRID creates Matlab .mat files that can be converted into ROMS grid files using the "seagrid2roms.m" | |||
routine. | |||
* join_cst.m: Turn coastline segments (e.g. from the [http://rimmer.ngdc.noaa.gov/coast/ Coastline Extractor]) into land | Some useful additional m-files for working with SEAGRID are | ||
* join_cst.m: Turn coastline segments (e.g. from the [http://rimmer.ngdc.noaa.gov/coast/ Coastline Extractor]) into coastline polygons that will then mask land when used in SEAGRID. | |||
* read_srtm30plus.m: Read SRTM30+ worldwide 30sec (~1km) topography via Web Mapping Service. | * read_srtm30plus.m: Read SRTM30+ worldwide 30sec (~1km) topography via Web Mapping Service. | ||
Revision as of 13:32, 3 October 2007
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
SEAGRID creates Matlab .mat files that can be converted into ROMS grid files using the "seagrid2roms.m" routine.
Some useful additional m-files for working with SEAGRID are
- join_cst.m: Turn coastline segments (e.g. from the Coastline Extractor) into coastline polygons that will then mask land when used in SEAGRID.
- read_srtm30plus.m: Read SRTM30+ worldwide 30sec (~1km) topography via Web Mapping Service.
These tools are part of the RPSstuff Matlab toolbox available via SVN:
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")
