Boundary Condition from HYCOM

Please refer to this page for detailed horizontal B.C. and nudging options supported by SCHISM.

Generating elev.2D.th.nc, SAL_3D.th.nc, TEM_3D.th.nc, and uv3D.th.nc:

from datetime import datetime

from pyschism.mesh.hgrid import Hgrid
from pyschism.forcing.hycom.hycom2schism import OpenBoundaryInventory

if __name__ == '__main__':
    start_date = datetime(2022, 4, 1)
    rnday = 10
    hgrid = Hgrid.open('./hgrid.gr3', crs='epsg:4326')
    vgrid = './vgrid.in'
    outdir = './'
    bnd = OpenBoundaryInventory(hgrid, vgrid)
    bnd.fetch_data(outdir, start_date, rnday, elev2D=True, TS=True, UV=True)

Generating SAL_nu.nc and TEM_nu.nc for nudging:

from datetime import datetime

from pyschism.mesh import Hgrid
from pyschism.forcing.hycom.hycom2schism import Nudge

if __name__ == '__main__':
    start_date = datetime(2022, 4, 1)
    rnday = 10
    hgrid = Hgrid.open('./hgrid.gr3', crs='epsg:4326')
    vgrid = './vgrid.in'
    outdir = './'

    nudge=Nudge()
    nudge.fetch_data(outdir, hgrid, vgrid, start_date, rnday)

This script also generates nudging coefficient files SAL_nu.gr3 and TEM_nu.gr3.