!-------------------------------------- LICENCE BEGIN ------------------------------------
!Environment Canada - Atmospheric Science and Technology License/Disclaimer, 
!                     version 3; Last Modified: May 7, 2008.
!This is free but copyrighted software; you can use/redistribute/modify it under the terms 
!of the Environment Canada - Atmospheric Science and Technology License/Disclaimer 
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#if defined (DOC)
*
***comdeck vtwm.cdk
*
*author M.Tanguay
*
* revision
* v3_31 - Tanguay M.    - initial MPI version
*
*______________________________________________________________________
*                                                                      |
*  TRAJ VMM variables at TIME tw (t2 work space)                       |
*______________________________________________________________________|
*                    |                                                 |
* NAME               | DESCRIPTION                                     |
*--------------------|-------------------------------------------------|
* utwm               | x component of velocity                         |
* vtwm               | y component of velocity                         |
* wtwm               | z component of velocity                         |
* ttwm               | T (temperature)                                 |
* tdtw               | total divergence (dpi* dot / dpi* + D )         |
* fitwm              | phi (geopotential)                              |
* qtwm               | q = ln p                                        |
*--------------------|-------------------------------------------------|
* tptwm              | T'       \                                      |
* fiptwm             | phi'      \  perturbations                      |
* qptwm              | q'        /                                     |
* piptwm             | pi'      /                                      |
*--------------------|-------------------------------------------------|
* tpltwm             | T'  linear                                      |
*--------------------|-------------------------------------------------|
* mutwm              | nonhydro index mu=dp/dpi-1 [= 0 if hydro]       |
* psdtwm             | pi* dot (vert. vel. in pi* coord.)              |
* stwm               | ln (pi_s/z_s)                                   |
*--------------------|-------------------------------------------------|
* trtwm              | passive tracer(s)                               |
*--------------------|-------------------------------------------------|
*
#endif
*
      MARK_COMMON_BEG(vtwm)
      DCL_VMMVAR( vtwm,   utwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm,   vtwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm,   wtwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm,   ttwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm,  tdtwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm,  fitwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm,   qtwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm,  tptwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm, fiptwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm,  qptwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm, piptwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm, tpltwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm,  mutwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm, psdtwm, real, (LDIST_SHAPE,l_nk) )
      DCL_VMMVAR( vtwm,   stwm, real, (LDIST_SHAPE)      )
      DCL_VMMVAR( vtwm,  trtwm, real, (LDIST_SHAPE,l_nk,*) )
      MARK_COMMON_END(vtwm)

      character*8 vtwm_n_first(1)
      equivalence (vtwm_n_first,VMM_NAM(utwm))