! source file: /Users/oschlies/UVIC/master/testcase/updates/convect_brine.F
      subroutine convect_brine (joff, js, je, is, ie)

!-----------------------------------------------------------------------
!     solve for brine rejection for each ice category and mix S & T.
!     the brine is first rejected to some depth, defined by
!     potential density difference from the previous time step
!     between the surface and the depth. then convective mixing
!     is applied under each category to both T & S.

!     input:
!       joff = offset relating "j" in the MW to latitude "jrow"
!       js   = starting row in the MW
!       je   = ending row in the MW
!       is   = starting longitude index in the MW
!       ie   = ending longitude index in the MW
!-----------------------------------------------------------------------

      return
      end