ROMSTOOLS A toolbox for ROMS pre and postprocessing

ROMS_TOOLS: A toolbox for ROMS pre- and post-processing Pierrick Penven, IRD http: //www. brest. ird. fr/Roms_tools/index. html Goal: to simplify the design and analysis of ROMS model configurations

In general, to run a ROMS simulation we must: - build a grid - find topography data - find a way to do the interpolations - put everything in a correct format - generate a "forcing" file - find wind data, heat flux , . . . - generate a "initial" file - find Temperature data, Salinity data, currents data - generate a "climatology" file - compile the netcdf library - compile roms - run roms - look at the results etc. . . Very time consuming task

ROMS_TOOLS: - integrated set of matlab tools to generate and visualize ROMS simulations - generate quickly a "standard" ROMS configuration - provides the necessary data sets - possibility of new developments (nesting, tides, etc. . )

Contents : . /Roms_tools/Roms_Agrif/. /Roms_tools/COADS 05/. /Roms_tools/Diagnostic_tools/. /Roms_tools/Documentation/. /Roms_tools/mask/. /Roms_tools/Mercator_interp/. /Roms_tools/m_map/. /Roms_tools/Nesting_tools/. /Roms_tools/netcdf_g 77/. /Roms_tools/netcdf_ifc/. /Roms_tools/netcdf_matlab/. /Roms_tools/Preprocessing_tools/. /Roms_tools/Quickscat_wind/. /Roms_tools/Run/. /Roms_tools/SST_pathfinder/. /Roms_tools/Tides/. /Roms_tools/Topo/. /Roms_tools/Visualization_tools/. /Roms_tools/WOA 2001/

STEP 1: the grid file (make_grid. m) ROMS_TOOLS choices: Informations to give: - rectangular grid - Title='VENISE #1'; - dx=dy (i. e. delta phi = cos(phi). delta G ) - grdname='roms_grd. nc'; - etopo 2 - mask (h>0) - selective smoothing of the topography - lonmin=9; - lonmax=21; - latmin=36; - latmax=46; - dl=1/5; - hmin=50; - rtarget=0. 3; - topofile='. . /Topo/etopo 2. nc'

STEP 2: the forcing file (make_forcing. m) ROMS_TOOLS choices: Informations to give: - Dasilva climatology - title=['Forcing (COADS)']; - extrapolation : OA or 'nearest' - grdname='roms_grd. nc'; - interpolation : 'cubic' - frcname='roms_frc. nc';

STEP 3: the climatology and initial files (make_clim. m) Informations to give: ROMS_TOOLS choices: - title='Climatology'; - makeclim=1; - WOA 2001 hydrographic data - extrapolations and interpolations along z levels - intermediates (z-coordinates) oa files - makeoa=1; - makeini=1; - grdname='roms_grd. nc'; - frcname='roms_frc. nc'; - geostrophy - mass conservation enforcement - equator - clmname='roms_clm. nc'; - ininame='roms_ini. nc'; - oaname ='roms_oa. nc'; - theta_s=6. ; - theta_b=0. ; - hc=10. ; - N=32; - obc=[1 1 0 1]; [S E N W]

Compile and run: edit cppdefs. h and param. h compile by jobcomp edit roms. in

Visualization (roms_gui. m) :

Add tides (make_tides. m) ROMS_TOOLS choices: - TPX 06 global model - tidal ellipse parameters in the ROMS forcing file Informations to give: - tidename='. . /Tides/TPXO 6. nc'; - gname='roms_grd. nc'; - fname='roms_frc. nc'; - Ntides=5; - year=2000; - month=1; - day=15; - hr=0. ; - minute=0. ; - second=0. ; % % Choose order from the rank in the TPXO file : % "M 2 S 2 N 2 K 1 O 1 P 1 Q 1 Mf Mm" tidalrank=[1 2 3 4 5 6 7 8 9 10];

Nesting (nestgui. m)

To summarize: ROMS_TOOLS might be useful as a first step before making more complex experiments and analysis