source: palm/trunk/SOURCE/parin.f90 @ 1762

!> @file parin.f90
!--------------------------------------------------------------------------------!
! This file is part of PALM.
!
! 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 1997-2015 Leibniz Universitaet Hannover
!--------------------------------------------------------------------------------!
!
! Current revisions:
! -----------------
! Introduction of nested domain feature
! 
! Former revisions:
! -----------------
! $Id: parin.f90 1762 2016-02-25 12:31:13Z hellstea $
!
! 1691 2015-10-26 16:17:44Z maronga
! Added parameter most_method. Renamed prandtl_layer to constant_flux_layer.
! 
! 1682 2015-10-07 23:56:08Z knoop
! Code annotations made doxygen readable 
! 
! 1560 2015-03-06 10:48:54Z keck
! +recycling_yshift
! 
! 1496 2014-12-02 17:25:50Z maronga
! Renamed: "radiation -> "cloud_top_radiation"
! 
! 1484 2014-10-21 10:53:05Z kanani
! Changes due to new module structure of the plant canopy model:
!   canopy-model related parameters moved to new package canopy_par in 
!   subroutine package_parin
! 
! 1429 2014-07-15 12:53:45Z knoop
! +ensemble_member_nr to prepare the random_generator for ensemble runs
! 
! 1402 2014-05-09 14:25:13Z raasch
! location messages modified, batch_job included in envpar-NAMELIST
! 
! 1384 2014-05-02 14:31:06Z raasch
! location messages added
! 
! 1365 2014-04-22 15:03:56Z boeske
! Usage of large scale forcing enabled:
! +use_subsidence_tendencies
! 
! 1361 2014-04-16 15:17:48Z hoffmann
! +call_microphysics_at_all_substeps
! 
! 1359 2014-04-11 17:15:14Z hoffmann
! REAL constants provided with KIND-attribute 
! 
! 1353 2014-04-08 15:21:23Z heinze
! REAL constants provided with KIND-attribute 
! 
! 1327 2014-03-21 11:00:16Z raasch
! -data_output_format, do3d_compress, do3d_comp_prec
!
! 1320 2014-03-20 08:40:49Z raasch
! ONLY-attribute added to USE-statements,
! kind-parameters added to all INTEGER and REAL declaration statements,
! kinds are defined in new module kinds,
! old module precision_kind is removed,
! revision history before 2012 removed,
! comment fields (!:) to be used for variable explanations added to
! all variable declaration statements
!
! 1318 2014-03-17 13:35:16Z raasch
! +cpu_log_barrierwait in d3par
!
! 1301 2014-03-06 13:29:46Z heinze
! +large_scale_subsidence
!
! 1241 2013-10-30 11:36:58Z heinze
! +nudging
! +large_scale_forcing
!
! 1216 2013-08-26 09:31:42Z raasch
! +transpose_compute_overlap in inipar
!
! 1195 2013-07-01 12:27:57Z heinze
! Bugfix: allocate ref_state
!
! 1179 2013-06-14 05:57:58Z raasch
! +reference_state in inipar
!
! 1159 2013-05-21 11:58:22Z fricke
! +use_cmax
!
! 1128 2013-04-12 06:19:32Z raasch
! +background_communication in inipar
!
! 1115 2013-03-26 18:16:16Z hoffmann
! unused variables removed
!
! 1092 2013-02-02 11:24:22Z raasch
! unused variables removed
!
! 1065 2012-11-22 17:42:36Z hoffmann
! +nc, c_sedimentation, limiter_sedimentation, turbulence
! -mu_constant, mu_constant_value
!
! 1053 2012-11-13 17:11:03Z hoffmann
! necessary expansions according to the two new prognostic equations (nr, qr) 
! of the two-moment cloud physics scheme and steering parameters:
! +*_init, *_surface, *_surface_initial_change, *_vertical_gradient, 
! +*_vertical_gradient_level, surface_waterflux_*, 
! +cloud_scheme, drizzle, mu_constant, mu_constant_value, ventilation_effect
!
! 1036 2012-10-22 13:43:42Z raasch
! code put under GPL (PALM 3.9)
!
! 1015 2012-09-27 09:23:24Z raasch
! -adjust_mixing_length
!
! 1003 2012-09-14 14:35:53Z raasch
! -grid_matching
!
! 1001 2012-09-13 14:08:46Z raasch
! -cut_spline_overshoot, long_filter_factor, overshoot_limit_*, ups_limit_*
!
! 996 2012-09-07 10:41:47Z raasch
! -use_prior_plot1d_parameters
!
! 978 2012-08-09 08:28:32Z fricke
! -km_damp_max, outflow_damping_width
! +pt_damping_factor, pt_damping_width
! +z0h_factor
!
! 964 2012-07-26 09:14:24Z raasch
! -cross_normalized_x, cross_normalized_y, cross_xtext, z_max_do1d,
! z_max_do1d_normalized
!
! 940 2012-07-09 14:31:00Z raasch
! +neutral in inipar
!
! 927 2012-06-06 19:15:04Z raasch
! +masking_method in inipar
!
! 824 2012-02-17 09:09:57Z raasch
! +curvature_solution_effects in inipar
!
! 809 2012-01-30 13:32:58Z maronga
! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives
!
! 807 2012-01-25 11:53:51Z maronga
! New cpp directive "__check" implemented which is used by check_namelist_files
!
! Revision 1.1  1997/07/24 11:22:50  raasch
! Initial revision
!
!
! Description:
! ------------
!> This subroutine reads variables controling the run from the NAMELIST files
!------------------------------------------------------------------------------!
 SUBROUTINE parin
 

    USE arrays_3d,                                                             &
        ONLY:  pt_init, q_init, ref_state, sa_init, ug, u_init, v_init,        &
               vg

    USE cloud_parameters,                                                      &
        ONLY:  c_sedimentation, curvature_solution_effects,                    &
               limiter_sedimentation, nc_const, ventilation_effect

    USE control_parameters

    USE cpulog,                                                                &
        ONLY:  cpu_log_barrierwait

    USE dvrp_variables,                                                        &
        ONLY:  local_dvrserver_running

    USE grid_variables,                                                        &
        ONLY:  dx, dy

    USE indices,                                                               &
        ONLY:  nx, ny, nz

    USE model_1d,                                                              &
        ONLY:  damp_level_1d, dt_pr_1d, dt_run_control_1d, end_time_1d

    USE pegrid

    USE profil_parameter,                                                      &
        ONLY:  cross_profiles, cross_ts_uymax, cross_ts_uymin,                 &
               profile_columns, profile_rows

    USE progress_bar,                                                          &
        ONLY :  batch_job

    USE statistics,                                                            &
        ONLY:  hom, hom_sum, pr_palm, region, statistic_regions


    IMPLICIT NONE

    INTEGER(iwp) ::  i   !<


    NAMELIST /inipar/  alpha_surface, background_communication, bc_e_b, bc_lr, &
                       bc_ns, bc_p_b, bc_p_t, bc_pt_b, bc_pt_t, bc_q_b,        &
             bc_q_t,bc_s_b, bc_s_t, bc_sa_t, bc_uv_b, bc_uv_t,                 &
             bottom_salinityflux, building_height, building_length_x,          &
             building_length_y, building_wall_left, building_wall_south,       &
             call_psolver_at_all_substeps, call_microphysics_at_all_substeps,  &
             canyon_height,                                                    &
             canyon_width_x, canyon_width_y, canyon_wall_left,                 &
             canyon_wall_south, c_sedimentation, cfl_factor, cloud_droplets,   &
             cloud_physics, cloud_scheme, cloud_top_radiation,                 &
             collective_wait, conserve_volume_flow,                            &
             conserve_volume_flow_mode, constant_flux_layer,                   &
             coupling_start_time,                                              &
             curvature_solution_effects, cycle_mg, damp_level_1d,              &
             dissipation_1d,                                                   &
             dp_external, dp_level_b, dp_smooth, dpdxy,                        &
             drizzle, dt, dt_pr_1d, dt_run_control_1d, dx, dy, dz, dz_max,     & 
             dz_stretch_factor, dz_stretch_level, end_time_1d,                 &
             ensemble_member_nr,                                               &
             e_init, e_min, fft_method, galilei_transformation, humidity,      &
             inflow_damping_height, inflow_damping_width,                      &
             inflow_disturbance_begin, inflow_disturbance_end,                 &
             initializing_actions, km_constant,                                &
             large_scale_forcing, large_scale_subsidence,                      &
             limiter_sedimentation,                                            &
             loop_optimization, masking_method, mg_cycles,                     &
             mg_switch_to_pe0_level, mixing_length_1d, momentum_advec,         &
             most_method, nc_const, netcdf_precision, neutral, ngsrb,          &
             nsor, nsor_ini, nudging, nx, ny, nz, ocean, omega, omega_sor,     &
             passive_scalar, phi,                                              &
             prandtl_number, precipitation, psolver, pt_damping_factor,        &
             pt_damping_width, pt_reference, pt_surface,                       &
             pt_surface_initial_change, pt_vertical_gradient,                  &
             pt_vertical_gradient_level, q_surface, q_surface_initial_change,  &
             q_vertical_gradient, q_vertical_gradient_level,                   &
             random_generator, random_heatflux,                                &
             rayleigh_damping_factor, rayleigh_damping_height,                 &
             recycling_width, recycling_yshift,                                &
             reference_state, residual_limit,                                  &
             roughness_length, sa_surface,                                     &
             sa_vertical_gradient, sa_vertical_gradient_level, scalar_advec,   &
             scalar_rayleigh_damping,                                          &
             statistic_regions, subs_vertical_gradient,                        &
             subs_vertical_gradient_level, surface_heatflux, surface_pressure, &
             surface_scalarflux, surface_waterflux,                            &
             s_surface, s_surface_initial_change, s_vertical_gradient,         &
             s_vertical_gradient_level, timestep_scheme,                       &
             topography, topography_grid_convention, top_heatflux,             &
             top_momentumflux_u, top_momentumflux_v, top_salinityflux,         &
             transpose_compute_overlap, turbulence, turbulent_inflow,          &
             use_subsidence_tendencies, ug_surface, ug_vertical_gradient,      &
             ug_vertical_gradient_level, use_surface_fluxes, use_cmax,         &
             use_top_fluxes, use_ug_for_galilei_tr, use_upstream_for_tke,      &
             uv_heights, u_bulk, u_profile, vg_surface, vg_vertical_gradient,  &
             vg_vertical_gradient_level, v_bulk, v_profile, ventilation_effect,&
             wall_adjustment, wall_heatflux, wall_humidityflux,                &
             wall_scalarflux, zeta_max, zeta_min, z0h_factor
      
    NAMELIST /d3par/  averaging_interval, averaging_interval_pr,               &
             cpu_log_barrierwait, create_disturbances,                         &
             cross_profiles, cross_ts_uymax, cross_ts_uymin,                   &
             data_output, data_output_masks,                                   &
             data_output_pr, data_output_2d_on_each_pe, disturbance_amplitude, &
             disturbance_energy_limit, disturbance_level_b,                    &
             disturbance_level_t, do2d_at_begin, do3d_at_begin,                &
             dt, dt_averaging_input, dt_averaging_input_pr,                    &
             dt_coupling, dt_data_output, dt_data_output_av, dt_disturb,       &
             dt_domask, dt_dopr, dt_dopr_listing, dt_dots, dt_do2d_xy,         &
             dt_do2d_xz, dt_do2d_yz, dt_do3d, dt_max, dt_restart,              &
             dt_run_control,end_time, force_print_header, mask_scale_x,        &
             mask_scale_y, mask_scale_z, mask_x, mask_y, mask_z, mask_x_loop,  &
             mask_y_loop, mask_z_loop, netcdf_data_format, normalizing_region, &
             npex, npey, nz_do3d, precipitation_amount_interval,               &
             profile_columns, profile_rows, restart_time, section_xy,          &
             section_xz, section_yz, skip_time_data_output,                    &
             skip_time_data_output_av, skip_time_dopr, skip_time_do2d_xy,      &
             skip_time_do2d_xz, skip_time_do2d_yz, skip_time_do3d,             &
             skip_time_domask, synchronous_exchange, termination_time_needed,  &
             z_max_do2d


    NAMELIST /envpar/  batch_job, host, local_dvrserver_running,               &
                       maximum_cpu_time_allowed, maximum_parallel_io_streams,  &
                       revision, return_addres, return_username,               &
                       run_identifier, tasks_per_node, write_binary

!
!-- First read values of environment variables (this NAMELIST file is
!-- generated by mrun)
    CALL location_message( 'reading environment parameters from ENVPAR', .FALSE. )
    OPEN ( 90, FILE='ENVPAR', STATUS='OLD', FORM='FORMATTED', ERR=30 )
    READ ( 90, envpar, ERR=31, END=32 )
    CLOSE ( 90 )
    CALL location_message( 'finished', .TRUE. )

!
!-- Calculate the number of groups into which parallel I/O is split.
!-- The default for files which are opened by all PEs (or where each
!-- PE opens his own independent file) is, that all PEs are doing input/output
!-- in parallel at the same time. This might cause performance or even more
!-- severe problems depending on the configuration of the underlying file
!-- system.
!-- First, set the default:
    IF ( maximum_parallel_io_streams == -1  .OR.                               &
         maximum_parallel_io_streams > numprocs )  THEN
       maximum_parallel_io_streams = numprocs
    ENDIF
!
!-- Now calculate the number of io_blocks and the io_group to which the
!-- respective PE belongs. I/O of the groups is done in serial, but in parallel
!-- for all PEs belonging to the same group.
!-- These settings are repeated in init_pegrid for the communicator comm2d,
!-- which is not available here
    io_blocks = numprocs / maximum_parallel_io_streams
    io_group  = MOD( myid+1, io_blocks )

    CALL location_message( 'reading NAMELIST parameters from PARIN', .FALSE. )
!
!-- Data is read in parallel by groups of PEs
    DO  i = 0, io_blocks-1
       IF ( i == io_group )  THEN

!
!--       Open the NAMELIST-file which is send with this job
          CALL check_open( 11 )

!
!--       Read the control parameters for initialization.
!--       The namelist "inipar" must be provided in the NAMELIST-file.
          READ ( 11, inipar, ERR=10, END=11 )

#if defined ( PMC_ACTIVE )
!
!--       In nested domains, npex or npey must not be given in \$inipar
!--       because here the PE-grids are always defined in the nestpar-NAMELIST
          IF ( ( npex /= -1 ) .OR. ( npey /= -1 ) )  THEN
             message_string = 'npex or npey must not be given in \$inipar ' // &
                              'in nested domains'
             CALL message( 'parin', 'PAXXXX', 1, 2, 0, 6, 0 )
          ENDIF
#else
!
!--       Make sure that no nesting boundary conditions are defined if
!--       PMC_ACTIVE is not defined. Otherwise initiate abort.
          IF ( ( bc_lr == 'nested' ) .OR. ( bc_ns == 'nested' ) .OR. ( bc_uv_t == 'nested' ) .OR. &
               ( bc_pt_t ==  'nested' ) .OR. ( bc_q_t == 'nested') .OR. ( bc_sa_t == 'nested') .OR. &
               ( bc_p_t == 'nested' ) ) THEN
             message_string = 'Nested boundary conditions are not allowed ' // &
                              'since the cpp flag PMC_ACTIVE is not set'
             CALL message( 'parin', 'PAXXXX', 1, 2, 0, 6, 0 )
          ENDIF
#endif

#if defined ( __check )
!
!--       In case of a namelist file check, &inipar from the p3d file is
!--       used. The p3d file here must be closed and the p3df file for reading 
!--       3dpar is opened.
          IF ( check_restart == 1 )  THEN
             CALL close_file( 11 )
             check_restart = 2
             CALL check_open( 11 )             
             initializing_actions = 'read_restart_data'
          ENDIF
#endif
          GOTO 12

 10       message_string = 'errors in \$inipar &or no \$inipar-namelist ' //   &
                           'found (CRAY-machines only)'
          CALL message( 'parin', 'PA0271', 1, 2, 0, 6, 0 )

 11       message_string = 'no \$inipar-namelist found'
          CALL message( 'parin', 'PA0272', 1, 2, 0, 6, 0 )

!
!--       If required, read control parameters from restart file (produced by
!--       a prior run). All PEs are reading from file created by PE0 (see
!--       check_open)
 12       IF ( TRIM( initializing_actions ) == 'read_restart_data' )  THEN
#if ! defined ( __check )
             CALL read_var_list
!
!--          The restart file will be reopened when reading the subdomain data
             CALL close_file( 13 )

!
!--          Increment the run count
             runnr = runnr + 1
#endif
          ENDIF

!
!--       Definition of names of areas used for computing statistics. They must
!--       be defined at this place, because they are allowed to be redefined by
!--       the user in user_parin.
          region = 'total domain'

!
!--       Read runtime parameters given by the user for this run (namelist
!--       "d3par"). The namelist "d3par" can be omitted. In that case, default
!--       values are used for the parameters.
          READ ( 11, d3par, END=20 )

!
!--       Read control parameters for optionally used model software packages
 20       CALL package_parin

!
!--       Read user-defined variables
          CALL user_parin

!
!--       Check in case of initial run, if the grid point numbers are well
!--       defined and allocate some arrays which are already needed in
!--       init_pegrid or check_parameters. During restart jobs, these arrays
!--       will be allocated in read_var_list. All other arrays are allocated
!--       in init_3d_model.
          IF ( TRIM( initializing_actions ) /= 'read_restart_data' )  THEN

             IF ( nx <= 0 )  THEN
                WRITE( message_string, * ) 'no value or wrong value given',    &
                                           ' for nx: nx=', nx
                CALL message( 'parin', 'PA0273', 1, 2, 0, 6, 0 )
             ENDIF
             IF ( ny <= 0 )  THEN
                WRITE( message_string, * ) 'no value or wrong value given',    &
                                           ' for ny: ny=', ny
                CALL message( 'parin', 'PA0274', 1, 2, 0, 6, 0 )
             ENDIF
             IF ( nz <= 0 )  THEN
                WRITE( message_string, * ) 'no value or wrong value given',    &
                                           ' for nz: nz=', nz
                CALL message( 'parin', 'PA0275', 1, 2, 0, 6, 0 )
             ENDIF
!
!--          ATTENTION: in case of changes to the following statement please
!--                  also check the allocate statement in routine read_var_list
             ALLOCATE( pt_init(0:nz+1), q_init(0:nz+1),                       &
                       ref_state(0:nz+1), sa_init(0:nz+1), ug(0:nz+1),         &
                       u_init(0:nz+1), v_init(0:nz+1), vg(0:nz+1),             &
                       hom(0:nz+1,2,pr_palm+max_pr_user,0:statistic_regions),  &
                       hom_sum(0:nz+1,pr_palm+max_pr_user,0:statistic_regions) )

             hom = 0.0_wp

          ENDIF

!
!--       NAMELIST-file is not needed anymore
          CALL close_file( 11 )

       ENDIF
#if defined( __parallel ) && ! ( __check )
       CALL MPI_BARRIER( MPI_COMM_WORLD, ierr )
#endif
    ENDDO

    CALL location_message( 'finished', .TRUE. )

    RETURN

 30 message_string = 'local file ENVPAR not found' //                          &
                     '&some variables for steering may not be properly set'
    CALL message( 'parin', 'PA0276', 0, 1, 0, 6, 0 )
    RETURN

 31 message_string = 'errors in local file ENVPAR' //                          &
                     '&some variables for steering may not be properly set'
    CALL message( 'parin', 'PA0277', 0, 1, 0, 6, 0 )
    RETURN

 32 message_string = 'no envpar-NAMELIST found in local file ENVPAR'  //       &
                     '&some variables for steering may not be properly set'
    CALL message( 'parin', 'PA0278', 0, 1, 0, 6, 0 )

 END SUBROUTINE parin