about river forcing files in ROMS

[xqzhang]

Hi everyone,

I am working on the river forcing files for my numerical simulations.
Since there are several rivers in the domain, I wonder
if I can have multiple river forcing files and each file
corresponds to one river in the .in file?

Thanks,

Zhang

[DongYe]

hi,maybe this will help you .In ocean_***.in files ,about the FRCNAME file,it said like this

'! Input forcing NetCDF file name(s). The USER has the option to enter
! several file names for each nested grid. For example, the USER may
! have different files for wind products, heat fluxes, rivers, tides,
! etc. The model will scan the file list and will read the needed data
! from the first file in the list containing the forcing field. Therefore,
! the order of the file names is very important. If using multiple forcing
! files per grid, first enter all the file names for grid 1, then grid 2,
! and so on. Use a single line per entry with a continuation (\) symbol
! at the each entry, except the last one.

NFFILES == 1 ! number of forcing files

FRCNAME == ocean_frc.nc ! forcing file 1, grid 1'

[arango]

Absolutely no Although there are several forcing files in ROMS, you can only have a single river forcing NetCDF file. Notice that the model will scan the forcing file list and will read the needed data from the first file in the list containing the river data. The order matters The river data is so small that you do not need to worry about the size of the NetCDF file.

What you are trying to do doesn't make any sense in ROMS because we need to know the number of rivers so everything is allocated correctly. If you want to play with the river forcing, you can build several river forcing files and carry out several runs to study their sensitivity.