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The subroutine SUPERBEEUV is called from the main program after the call to
INTERNAL. SUPERBEEUV estimates
contributions to and due to the terms
in equations
(56) and (57) describing advection of
momentum and add these to the contributions estimated by INTERNAL.
SUPERBEEUV applies an combination of a 1th orher upwind method and a 2nd order Lax-Wendroff method to compute the advective
fluxes. The method is implemented following the description in Yang and
Przekwas [46].
If RIVLOG is .TRUE. , fluxes of the momentum from rivers are also included.

Helge Avlesen
2004-05-10