source: palm/trunk/SOURCE/gust_mod.f90 @ 4851

!> @file gust_mod.f90
!--------------------------------------------------------------------------------------------------!
! This file is part of the PALM model system.
!
! PALM is free software: you can redistribute it and/or modify it under the terms of the GNU General
! Public License as published by the Free Software Foundation, either version 3 of the License, or
! (at your option) any later version.
!
! PALM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
! implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
! Public License for more details.
!
! You should have received a copy of the GNU General Public License along with PALM. If not, see
! <http://www.gnu.org/licenses/>.
!
! Copyright 1997-2021 Leibniz Universitaet Hannover
!--------------------------------------------------------------------------------------------------!
!
! Current revisions:
! -----------------
!
!
! Former revisions:
! -----------------
! $Id: gust_mod.f90 4843 2021-01-15 15:22:11Z gronemeier $
! local namelist parameter added to switch off the module although the respective module namelist
! appears in the namelist file
!
! 4842 2021-01-14 10:42:28Z raasch
! reading of namelist file and actions in case of namelist errors revised so that statement labels
! and goto statements are not required any more
!
! 4828 2021-01-05 11:21:41Z Giersch
! Enable 3D data output also with 64-bit precision
!
! 4646 2020-08-24 16:02:40Z raasch
! file re-formatted to follow the PALM coding standard
!
! 4535 2020-05-15 12:07:23Z raasch
! bugfix for restart data format query
!
! 4517 2020-05-03 14:29:30Z raasch
! added restart with MPI-IO for reading local arrays
!
! 4495 2020-04-13 20:11:20Z raasch
! restart data handling with MPI-IO added
!
! 4360 2020-01-07 11:25:50Z suehring
! CASE statement for dummy variable u2_av in gust_rrd_local changed to avoid unintended
! interdependencies with user-defined variables
!
! 3837 2019-03-28 16:55:58Z knoop
! unused variable for file index removed from rrd-subroutines parameter list
!
! 3725 2019-02-07 10:11:02Z raasch
! dummy statement modified to avoid compiler warnings about unused variables
!
! 3685 2019-01-21 01:02:11Z knoop
! Some interface calls moved to module_interface + cleanup
!
! 3665 2019-01-10 08:28:24Z raasch
! dummy statements added to avoid compiler warnings about unused variables
!
! 3655 2019-01-07 16:51:22Z knoop
! Bugfix: domain bounds of local_pf corrected
!
!
! Interfaces concerning data output updated
!
!
! renamed gust_par to gust_parameters
!
!
! Initial interface definition
!
!
! Description:
! ------------
!> Gust model.
!>
!> @todo This is just a dummy module. The actual module ist not released yet.
!--------------------------------------------------------------------------------------------------!
 MODULE gust_mod

    USE control_parameters,                                                                        &
        ONLY:  restart_data_format_output

    USE indices,                                                                                   &
        ONLY:  nxl, nxlg, nxr, nxrg, nys, nysg, nyn, nyng, nzb, nzt

    USE kinds

!    USE restart_data_mpi_io_mod,                                                                   &
!        ONLY:

    IMPLICIT NONE

    INTEGER(iwp) ::  idum  !< dummy variable used to avoid compiler warnings about unused variables

    LOGICAL ::  dummy_logical = .FALSE.        !< switch to avoid compiler warnings about unused variables
    LOGICAL ::  gust_module_enabled = .FALSE.  !< switch, if the entire module is used at all

    SAVE

    PRIVATE

!
!-- Public functions
    PUBLIC                                                                                         &
       gust_parin,                                                                                 &
       gust_check_parameters,                                                                      &
       gust_check_data_output_pr,                                                                  &
       gust_check_data_output,                                                                     &
       gust_init_arrays,                                                                           &
       gust_init,                                                                                  &
       gust_define_netcdf_grid,                                                                    &
       gust_header,                                                                                &
       gust_actions,                                                                               &
       gust_prognostic_equations,                                                                  &
       gust_swap_timelevel,                                                                        &
       gust_3d_data_averaging,                                                                     &
       gust_data_output_2d,                                                                        &
       gust_data_output_3d,                                                                        &
       gust_statistics,                                                                            &
       gust_rrd_global,                                                                            &
       gust_wrd_global,                                                                            &
       gust_rrd_local,                                                                             &
       gust_wrd_local
!
!-- Public parameters, constants and initial values
    PUBLIC                                                                                         &
       gust_module_enabled


    INTERFACE gust_parin
       MODULE PROCEDURE gust_parin
    END INTERFACE gust_parin

    INTERFACE gust_check_parameters
       MODULE PROCEDURE gust_check_parameters
    END INTERFACE gust_check_parameters

    INTERFACE gust_check_data_output_pr
       MODULE PROCEDURE gust_check_data_output_pr
    END INTERFACE gust_check_data_output_pr

    INTERFACE gust_check_data_output
       MODULE PROCEDURE gust_check_data_output
    END INTERFACE gust_check_data_output

    INTERFACE gust_init_arrays
       MODULE PROCEDURE gust_init_arrays
    END INTERFACE gust_init_arrays

    INTERFACE gust_init
       MODULE PROCEDURE gust_init
    END INTERFACE gust_init

    INTERFACE gust_define_netcdf_grid
       MODULE PROCEDURE gust_define_netcdf_grid
    END INTERFACE gust_define_netcdf_grid

    INTERFACE gust_header
       MODULE PROCEDURE gust_header
    END INTERFACE gust_header

    INTERFACE gust_actions
       MODULE PROCEDURE gust_actions
       MODULE PROCEDURE gust_actions_ij
    END INTERFACE gust_actions

    INTERFACE gust_prognostic_equations
       MODULE PROCEDURE gust_prognostic_equations
       MODULE PROCEDURE gust_prognostic_equations_ij
    END INTERFACE gust_prognostic_equations

    INTERFACE gust_swap_timelevel
       MODULE PROCEDURE gust_swap_timelevel
    END INTERFACE gust_swap_timelevel

    INTERFACE gust_3d_data_averaging
       MODULE PROCEDURE gust_3d_data_averaging
    END INTERFACE gust_3d_data_averaging

    INTERFACE gust_data_output_2d
       MODULE PROCEDURE gust_data_output_2d
    END INTERFACE gust_data_output_2d

    INTERFACE gust_data_output_3d
       MODULE PROCEDURE gust_data_output_3d
    END INTERFACE gust_data_output_3d

    INTERFACE gust_statistics
       MODULE PROCEDURE gust_statistics
    END INTERFACE gust_statistics

    INTERFACE gust_rrd_global
       MODULE PROCEDURE gust_rrd_global_ftn
       MODULE PROCEDURE gust_rrd_global_mpi
    END INTERFACE gust_rrd_global

    INTERFACE gust_wrd_global
       MODULE PROCEDURE gust_wrd_global
    END INTERFACE gust_wrd_global

    INTERFACE gust_rrd_local
       MODULE PROCEDURE gust_rrd_local_ftn
       MODULE PROCEDURE gust_rrd_local_mpi
    END INTERFACE gust_rrd_local

    INTERFACE gust_wrd_local
       MODULE PROCEDURE gust_wrd_local
    END INTERFACE gust_wrd_local

 CONTAINS


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Parin for &gust_parameters for gust module
!--------------------------------------------------------------------------------------------------!
 SUBROUTINE gust_parin


    IMPLICIT NONE

    CHARACTER(LEN=100)  ::  line  !< dummy string that contains the current line of the parameter
                                  !< file

    INTEGER(iwp)  ::  io_status   !< status after reading the namelist file

    LOGICAL ::  switch_off_module = .FALSE.  !< local namelist parameter to switch off the module
                                             !< although the respective module namelist appears in
                                             !< the namelist file

    NAMELIST /gust_parameters/  switch_off_module

!
!-- Move to the beginning of the namelist file and try to find and read the namelist.
    REWIND( 11 )
    READ( 11, gust_parameters, IOSTAT=io_status )

!
!-- Action depending on the READ status
    IF ( io_status == 0 )  THEN
!
!--    gust_parameters namelist was found and read correctly. Set flag that indicates that the gust
!--    module is switched on.
       IF ( .NOT. switch_off_module )  gust_module_enabled = .TRUE.

    ELSEIF ( io_status > 0 )  THEN
!
!--    gust_parameters namelist was found, but contained errors. Print an error message including
!--    the line that caused the problem.
       BACKSPACE( 11 )
       READ( 11 , '(A)') line
       CALL parin_fail_message( 'gust_parameters', line )

    ENDIF

 END SUBROUTINE gust_parin


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Check parameters routine for gust module
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_check_parameters


       IMPLICIT NONE


    END SUBROUTINE gust_check_parameters


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Check data output of profiles for gust module
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_check_data_output_pr( variable, var_count, unit, dopr_unit )


       IMPLICIT NONE

       CHARACTER (LEN=*) ::  dopr_unit !< local value of dopr_unit
       CHARACTER (LEN=*) ::  unit      !<
       CHARACTER (LEN=*) ::  variable  !<

       INTEGER(iwp) ::  var_count      !<

!
!--    Next line is just to avoid compiler warnings about unused variables. You may remove it.
       IF ( dummy_logical )  idum = LEN( unit ) + LEN( variable ) + LEN( dopr_unit ) + var_count

    END SUBROUTINE gust_check_data_output_pr

!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Check data output for gust module
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_check_data_output( var, unit )


       IMPLICIT NONE

       CHARACTER (LEN=*) ::  unit  !<
       CHARACTER (LEN=*) ::  var   !<

!
!--    Next line is just to avoid compiler warnings about unused variables. You may remove it.
       IF ( dummy_logical )  idum = LEN( var ) + LEN( unit )

    END SUBROUTINE gust_check_data_output


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Allocate gust module arrays and define pointers
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_init_arrays


       IMPLICIT NONE


    END SUBROUTINE gust_init_arrays


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Initialization of the gust module
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_init


       IMPLICIT NONE


    END SUBROUTINE gust_init


!--------------------------------------------------------------------------------------------------!
!
! Description:
! ------------
!> Subroutine defining appropriate grid for netcdf variables.
!> It is called out from subroutine netcdf.
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_define_netcdf_grid( var, found, grid_x, grid_y, grid_z )


       IMPLICIT NONE

       CHARACTER (LEN=*), INTENT(IN) ::  grid_x      !<
       CHARACTER (LEN=*), INTENT(IN) ::  grid_y      !<
       CHARACTER (LEN=*), INTENT(IN) ::  grid_z      !<
       CHARACTER (LEN=*), INTENT(IN) ::  var         !<

       LOGICAL, INTENT(IN)           ::  found       !<

!
!--    Next line is just to avoid compiler warnings about unused variables. You may remove it.
       IF ( found )  idum = LEN( var ) + LEN( grid_x ) + LEN( grid_y ) + LEN( grid_z )

    END SUBROUTINE gust_define_netcdf_grid


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Header output for gust module
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_header ( io )


       IMPLICIT NONE

       INTEGER(iwp), INTENT(IN) ::  io  !< Unit of the output file

!
!--    Next line is just to avoid compiler warnings about unused variables. You may remove it.
       IF ( dummy_logical )  idum = io

    END SUBROUTINE gust_header


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Call for all grid points
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_actions( location )


       IMPLICIT NONE

       CHARACTER (LEN=*) ::  location !<

!
!--    Next line is just to avoid compiler warnings about unused variables. You may remove it.
       IF ( dummy_logical )  idum = LEN( location )

    END SUBROUTINE gust_actions


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Call for grid point i,j
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_actions_ij( i, j, location )


       IMPLICIT NONE

       CHARACTER (LEN=*) ::  location

       INTEGER(iwp) ::  i
       INTEGER(iwp) ::  j

!
!--    Next line is just to avoid compiler warnings about unused variables. You may remove it.
       IF ( dummy_logical )  idum = i + j + LEN( location )

    END SUBROUTINE gust_actions_ij


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Call for all grid points
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_prognostic_equations()

!
!--    Next line is just to avoid compiler warnings about unused variables. You may remove it.
       IF ( dummy_logical )  idum = 1

    END SUBROUTINE gust_prognostic_equations


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Call for grid point i,j
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_prognostic_equations_ij( i, j, i_omp_start, tn )


       INTEGER(iwp), INTENT(IN) ::  i            !< grid index in x-direction
       INTEGER(iwp), INTENT(IN) ::  i_omp_start  !< first loop index of i-loop in prognostic_equations
       INTEGER(iwp), INTENT(IN) ::  j            !< grid index in y-direction
       INTEGER(iwp), INTENT(IN) ::  tn           !< task number of openmp task

!
!--    Next line is just to avoid compiler warnings about unused variables. You may remove it.
       IF ( dummy_logical )  idum = i + j + i_omp_start + tn

    END SUBROUTINE gust_prognostic_equations_ij


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Swapping of timelevels
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_swap_timelevel ( mod_count )


       IMPLICIT NONE

       INTEGER, INTENT(IN) ::  mod_count

!
!--    Next line is just to avoid compiler warnings about unused variables. You may remove it.
       IF ( dummy_logical )  idum = mod_count

    END SUBROUTINE gust_swap_timelevel


!--------------------------------------------------------------------------------------------------!
!
! Description:
! ------------
!> Subroutine for averaging 3D data
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_3d_data_averaging( mode, variable )


       IMPLICIT NONE

       CHARACTER (LEN=*) ::  mode    !<
       CHARACTER (LEN=*) ::  variable !<

!
!--    Next line is just to avoid compiler warnings about unused variables. You may remove it.
       IF ( dummy_logical )  idum = LEN( mode ) + LEN( variable )

    END SUBROUTINE gust_3d_data_averaging

!--------------------------------------------------------------------------------------------------!
!
! Description:
! ------------
!> Subroutine defining 2D output variables
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_data_output_2d( av, variable, found, grid, mode, local_pf, two_d, nzb_do,      &
                                    nzt_do, fill_value )


       IMPLICIT NONE

       CHARACTER (LEN=*), INTENT(INOUT) ::  grid       !< name of vertical grid
       CHARACTER (LEN=*), INTENT(IN)    ::  mode       !< either 'xy', 'xz' or 'yz'
       CHARACTER (LEN=*), INTENT(IN)    ::  variable   !< name of variable

       INTEGER(iwp), INTENT(IN) ::  av        !< flag for (non-)average output
       INTEGER(iwp), INTENT(IN) ::  nzb_do    !< vertical output index (bottom)
       INTEGER(iwp), INTENT(IN) ::  nzt_do    !< vertical output index (top)

       LOGICAL, INTENT(INOUT) ::  found   !< flag if output variable is found
       LOGICAL, INTENT(INOUT) ::  two_d !< flag parameter that indicates 2D variables (horizontal cross sections)

       REAL(wp), INTENT(IN) ::  fill_value !< value for the _FillValue attribute

       REAL(wp), DIMENSION(nxl:nxr,nys:nyn,nzb_do:nzt_do), INTENT(INOUT) ::  local_pf !< local
                                                                                      !< array to which output data is resorted to

!
!--    Next line is just to avoid compiler warnings about unused variables. You may remove it.
       IF ( found .AND. two_d )  THEN
          idum = av + LEN( variable ) + LEN( grid // mode ) + local_pf(nxl,nys,nzb_do) + fill_value
       ENDIF

    END SUBROUTINE gust_data_output_2d


!--------------------------------------------------------------------------------------------------!
!
! Description:
! ------------
!> Subroutine defining 3D output variables
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_data_output_3d( av, variable, found, local_pf, fill_value, nzb_do, nzt_do )


       IMPLICIT NONE

       CHARACTER (LEN=*), INTENT(IN) ::  variable   !< name of variable

       INTEGER(iwp), INTENT(IN) ::  av        !< flag for (non-)average output
       INTEGER(iwp), INTENT(IN) ::  nzb_do    !< lower limit of the data output (usually 0)
       INTEGER(iwp), INTENT(IN) ::  nzt_do    !< vertical upper limit of the data output (usually nz_do3d)

       LOGICAL, INTENT(INOUT) ::  found     !< flag if output variable is found

       REAL(wp), INTENT(IN) ::  fill_value !< value for the _FillValue attribute

       REAL(wp), DIMENSION(nxl:nxr,nys:nyn,nzb_do:nzt_do), INTENT(INOUT) ::  local_pf   !< local
                                                                                        !< array to which output data is resorted to

!
!--    Next line is just to avoid compiler warnings about unused variables. You may remove it.
       IF ( found )  idum = av + LEN( variable ) + fill_value + local_pf(nxl,nys,nzb_do)

    END SUBROUTINE gust_data_output_3d


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> This routine computes profile and timeseries data for the gust module.
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_statistics( mode, sr, tn, dots_max )


       IMPLICIT NONE

       CHARACTER (LEN=*) ::  mode  !<

       INTEGER(iwp) ::  dots_max   !<
       INTEGER(iwp) ::  sr         !<
       INTEGER(iwp) ::  tn         !<

!
!--    Next line is just to avoid compiler warnings about unused variables. You may remove it.
       IF ( dummy_logical )  idum = dots_max + sr + tn + LEN( mode )

    END SUBROUTINE gust_statistics


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Read module-specific global restart data (Fortran binary format).
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_rrd_global_ftn( found )


       USE control_parameters,                                                                     &
           ONLY: length, restart_string


       IMPLICIT NONE

       LOGICAL, INTENT(OUT)  ::  found


       found = .TRUE.


       SELECT CASE ( restart_string(1:length) )

          CASE ( 'global_paramter' )
!             READ ( 13 )  global_parameter

          CASE DEFAULT

             found = .FALSE.

       END SELECT


    END SUBROUTINE gust_rrd_global_ftn


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Read module-specific global restart data (MPI-IO).
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_rrd_global_mpi


!       CALL rrd_mpi_io( 'global_parameter', global_parameter )
!             READ ( 13 )  global_parameter

    END SUBROUTINE gust_rrd_global_mpi


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Read module-specific local restart data arrays (Fortran binary format).
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_rrd_local_ftn( k, nxlf, nxlc, nxl_on_file, nxrf, nxrc, nxr_on_file, nynf, nync,&
                                   nyn_on_file, nysf, nysc, nys_on_file, tmp_2d, tmp_3d, found )


       USE control_parameters

       USE indices

       USE kinds

       USE pegrid


       IMPLICIT NONE

       INTEGER(iwp) ::  k               !<
       INTEGER(iwp) ::  nxlc            !<
       INTEGER(iwp) ::  nxlf            !<
       INTEGER(iwp) ::  nxl_on_file     !<
       INTEGER(iwp) ::  nxrc            !<
       INTEGER(iwp) ::  nxrf            !<
       INTEGER(iwp) ::  nxr_on_file     !<
       INTEGER(iwp) ::  nync            !<
       INTEGER(iwp) ::  nynf            !<
       INTEGER(iwp) ::  nyn_on_file     !<
       INTEGER(iwp) ::  nysc            !<
       INTEGER(iwp) ::  nysf            !<
       INTEGER(iwp) ::  nys_on_file     !<

       LOGICAL, INTENT(OUT)  ::  found

       REAL(wp), DIMENSION(nys_on_file-nbgp:nyn_on_file+nbgp,nxl_on_file-nbgp:nxr_on_file+nbgp) :: tmp_2d   !<
       REAL(wp), DIMENSION(nzb:nzt+1,nys_on_file-nbgp:nyn_on_file+nbgp,nxl_on_file-nbgp:nxr_on_file+nbgp) :: tmp_3d   !<


!
!--    Next lins are just to avoid compiler warnings about unused variables in case of empty user interface routine.
!--    You may remove them.
       IF ( dummy_logical )  THEN
          idum = k + nxlc + nxlf + nxrc + nxrf + nync + nynf + nysc + nysf +                       &
                 tmp_2d(nys_on_file,nxl_on_file) + tmp_3d(nzb,nys_on_file,nxl_on_file)
       ENDIF

!
!--    Here the reading of user-defined restart data follows:
!--    Sample for user-defined output
       found = .TRUE.

       SELECT CASE ( restart_string(1:length) )

          CASE ( '.......' )
!             IF ( .NOT. ALLOCATED( u2_av ) ) THEN
!                  ALLOCATE( u2_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
!             ENDIF
!             IF ( k == 1 )  READ ( 13 )  tmp_3d
!                u2_av(:,nysc-nbgp:nync+nbgp,nxlc-nbgp:nxrc+nbgp) =         &
!                   tmp_3d(:,nysf-nbgp:nynf+nbgp,nxlf-nbgp:nxrf+nbgp)
!
          CASE DEFAULT

             found = .FALSE.

          END SELECT


    END SUBROUTINE gust_rrd_local_ftn


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> Read module-specific local restart data arrays (MPI-IO).
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_rrd_local_mpi


!       CALL rrd_mpi_io( 'local_array', local_array )

    END SUBROUTINE gust_rrd_local_mpi


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> This routine writes the respective restart data for the gust module.
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_wrd_global


       IMPLICIT NONE


       IF ( TRIM( restart_data_format_output ) == 'fortran_binary' )  THEN

!          CALL wrd_write_string( 'global_parameter' )
!          WRITE ( 14 )  global_parameter

!          IF ( ALLOCATED( inflow_damping_factor ) )  THEN
!             CALL wrd_write_string( 'inflow_damping_factor' )
!             WRITE ( 14 )  inflow_damping_factor
!          ENDIF

       ELSEIF ( restart_data_format_output(1:3) == 'mpi' )  THEN

!          CALL wrd_mpi_io( 'global_parameter', global_parameter )
!          IF ( ALLOCATED( inflow_damping_factor ) )  THEN
!             CALL wrd_mpi_io_global_array( 'inflow_damping_factor', inflow_damping_factor )
!          ENDIF

       ENDIF

    END SUBROUTINE gust_wrd_global


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> This routine writes the respective restart data for the gust module.
!--------------------------------------------------------------------------------------------------!
    SUBROUTINE gust_wrd_local


       IMPLICIT NONE


       IF ( TRIM( restart_data_format_output ) == 'fortran_binary' )  THEN

!          IF ( ALLOCATED( u2_av ) )  THEN
!             CALL wrd_write_string( 'u2_av' )
!             WRITE ( 14 )  u2_av
!          ENDIF

       ELSEIF ( restart_data_format_output(1:3) == 'mpi' )  THEN

!          IF ( ALLOCATED( u2_av ) )  CALL wrd_mpi_io( 'u2_av', u2_av )

       ENDIF

    END SUBROUTINE gust_wrd_local



 END MODULE gust_mod