subroutine da_radial_velocity_lin(rv,p,u,v,w,qrn,ps,x,y,z,qrn9) !----------------------------------------------------------------------- ! Purpose: TBD !----------------------------------------------------------------------- implicit none real, intent(in) :: x, y, z real, intent(in) :: p, u, v, w, qrn, ps real, intent(in) :: qrn9 real, intent(out) :: rv real :: r, alpha, vt if (trace_use) call da_trace_entry("da_radial_velocity_lin") r = sqrt(x*x+y*y+z*z) alpha = (ps/p)**0.4 if (qrn9 <= 0.0) then vt=0.0 end if if (qrn9 > 0.0) then vt=0.675*alpha*qrn9**(-0.875)*qrn end if rv = u*x+v*y+(w-vt)*z rv = rv/r if (trace_use) call da_trace_exit("da_radial_velocity_lin") end subroutine da_radial_velocity_lin