Custom Query (964 matches)

The current trunk revision (-r 550) is quite stable so we are tagging this as ROMS/TOMS Version 3.4. Please check the following forum ​message for information about this release.

This is a major update of ROMS nonlinear, tangent linear, representer, and adjoint models to include the multiple grid nesting (refinement, composed, and mosaics) infra-structure. The nesting capabilities are not still available and will be released in the near future, I hope. There is is still some work ahead. The changes that will be required for full nesting capabilities are very minimal and will involve changes to main2d/main3d, open boundary conditions, and additional new files for the actual nesting.

However, the current update is very important since it includes changes to the ROMS kernel. I have been working on this for the last two years. I have extensively tested ROMS's NLM, TLM, RPM, and ADM kernels and their associated algorithms. This was difficult and time intensive. It required months in the debugger and a very systematic test of all ROMS algorithms and C-preprocessing options.

The technical description of the changes is elaborated and will be reported in the ROMS ​forum.

We are releasing this update a this time to allow time to the Users to assimilate and test play with the new structure. This new version has very new nice capabilities that some of you have been asking for long time.

Many many thank to John Warner for his help in developing and testing this capability. We have been working on this on and off for several years.

Happy Earth Day!

Updated the ROMS Test Cases input scripts (ocean_*.in) and build (build.bash and build.sh) scripts to ROMS 3.5.

Notice that now we have logic to splitting input fields time records into several NetCDF files. This is useful when splitting input data (climatology, boundary, forcing) time records into several files (say monthly, annual, etc). In this case, each multiple file entry line needs to be ended by the vertical bar (|) symbol. For example:

    NFFILES == 8                          ! number of forcing files

    FRCNAME == my_rivers.nc      \
               my_tides.nc       \
               my_lwrad_year1.nc |
               my_lwrad_year2.nc \
               my_swrad_year1.nc |
               my_swrad_year2.nc \
               my_winds_year1.nc |
               my_winds_year2.nc \
               my_Pair_year1.nc  |
               my_Pair_year2.nc  \
               my_Qair_year1.nc  |
               my_Qair_year2.nc  \
               my_Tair_year1.nc  |
               my_Tair_year2.nc

Notice that NFFILES is 8 and not 14. There are 8 uniquely different fields in the file list, we do not count file entries followed by the vertical bar symbol. This is because multiple file entries are processed in ROMS with derived type structures.

Also notice that in ROMS 3.5 we don't longer have the environmental variable NestedGrids in the makefile or the build script. The number of nested grids are now specified in ocean.in:

! Number of nested grids.

      Ngrids =  1

This required a substantial change of all parameters that depends on the Ngrids dimension. We need to allocate them.

Also notice that in order to use the build scripts from version 3.5 with older versions of ROMS, you need to set the following environmental variable in your login .cshrc or .tcshrc:

setenv NestedGrids 1

Recall that in the Test Cases you can specify different versions of ROMS in the build script.