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!Environment Canada - Atmospheric Science and Technology License/Disclaimer, 
!                     version 3; Last Modified: May 7, 2008.
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***s/r hdif0_tl - TLM of hdif0 
*
#include "model_macros_f.h"
*

      subroutine hdif0_tl () 1,4
*
#include "impnone.cdk"
*
*author M.Tanguay
*
*revision
* v3_03 - Tanguay M.        - initial MPI version
* v3_20 - Tanguay M.        - Remove V4dg_oktrtl_L
*
*object
*     see id section
*
*arguments
*
*implicits
#include "glb_ld.cdk"
#include "lctl.cdk"
#include "v4dg.cdk"
*
*        Horizontal diffusion & Vertical sponge at initial timestep
*        ----------------------------------------------------------
*
         if (Lctl_step.eq.1) then
*
*           Recover TRAJ PIPT1,QPT1M (No Hyd) before HZD diffusion
*           ------------------------------------------------------
            Lctl_step  = 0
            call v4d_rwtraj (2)
            Lctl_step  = 1
*
            call   hzd_main_tl ()
            call vspng_main_tl ()
            if (.not.G_lam) call hspng_main_tl ()
*
         endif
*
      return
      end