!> @file nesting_offl_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 . ! ! Copyright 1997-2020 Leibniz Universitaet Hannover !------------------------------------------------------------------------------! ! ! Current revisions: ! ------------------ ! ! ! Former revisions: ! ----------------- ! $Id: nesting_offl_mod.f90 4582 2020-06-29 09:22:11Z eckhard $ ! Remove unused variable ! ! 4581 2020-06-29 08:49:58Z suehring ! Omit explicit pressure forcing via geostrophic wind components in case of ! mesoscale nesting. ! ! 4561 2020-06-12 07:05:56Z suehring ! Adapt mass-flux correction also for the anelastic approximation ! ! 4561 2020-06-12 07:05:56Z suehring ! use statement for exchange horiz added ! ! 4360 2020-01-07 11:25:50Z suehring ! Bugfix, time coordinate is relative to origin_time rather than to 00:00:00 ! UTC. ! ! 4346 2019-12-18 11:55:56Z motisi ! Introduction of wall_flags_total_0, which currently sets bits based on static ! topography information used in wall_flags_static_0 ! ! 4329 2019-12-10 15:46:36Z motisi ! Renamed wall_flags_0 to wall_flags_static_0 ! ! 4286 2019-10-30 16:01:14Z resler ! Fix wrong checks of time from dynamic driver in nesting_offl_mod ! ! 4273 2019-10-24 13:40:54Z monakurppa ! Add a logical switch nesting_offline_chem ! ! 4270 2019-10-23 10:46:20Z monakurppa ! Implement offline nesting for salsa variables. ! ! 4231 2019-09-12 11:22:00Z suehring ! Bugfix in array deallocation ! ! 4230 2019-09-11 13:58:14Z suehring ! Update mean chemistry profiles. These are also used for rayleigh damping. ! ! 4227 2019-09-10 18:04:34Z gronemeier ! implement new palm_date_time_mod ! ! - Data input moved into nesting_offl_mod ! - check rephrased ! - time variable is now relative to time_utc_init ! - Define module specific data type for offline nesting in nesting_offl_mod ! ! 4182 2019-08-22 15:20:23Z scharf ! Corrected "Former revisions" section ! ! 4169 2019-08-19 13:54:35Z suehring ! Additional check added. ! ! 4168 2019-08-16 13:50:17Z suehring ! Replace function get_topography_top_index by topo_top_ind ! ! 4125 2019-07-29 13:31:44Z suehring ! In order to enable netcdf parallel access, allocate dummy arrays for the ! lateral boundary data on cores that actually do not belong to these ! boundaries. ! ! 4079 2019-07-09 18:04:41Z suehring ! - Set boundary condition for w at nzt+1 at the lateral boundaries, even ! though these won't enter the numerical solution. However, due to the mass ! conservation these values might some up to very large values which will ! occur in the run-control file ! - Bugfix in offline nesting of chemical species ! - Do not set Neumann conditions for TKE and passive scalar ! ! 4022 2019-06-12 11:52:39Z suehring ! Detection of boundary-layer depth in stable boundary layer on basis of ! boundary data improved ! Routine for boundary-layer depth calculation renamed and made public ! ! 3987 2019-05-22 09:52:13Z kanani ! Introduce alternative switch for debug output during timestepping ! ! 3964 2019-05-09 09:48:32Z suehring ! Ensure that veloctiy term in calculation of bulk Richardson number does not ! become zero ! ! 3937 2019-04-29 15:09:07Z suehring ! Set boundary conditon on upper-left and upper-south grid point for the u- and ! v-component, respectively. ! ! 3891 2019-04-12 17:52:01Z suehring ! Bugfix, do not overwrite lateral and top boundary data in case of restart ! runs. ! ! 3885 2019-04-11 11:29:34Z kanani ! Changes related to global restructuring of location messages and introduction ! of additional debug messages ! ! ! Do local data exchange for chemistry variables only when boundary data is ! coming from dynamic file ! ! 3737 2019-02-12 16:57:06Z suehring ! Introduce mesoscale nesting for chemical species ! ! 3705 2019-01-29 19:56:39Z suehring ! Formatting adjustments ! ! 3704 2019-01-29 19:51:41Z suehring ! Check implemented for offline nesting in child domain ! ! Initial Revision: ! - separate offline nesting from large_scale_nudging_mod ! - revise offline nesting, adjust for usage of synthetic turbulence generator ! - adjust Rayleigh damping depending on the time-depending atmospheric ! conditions ! ! ! Description: ! ------------ !> Offline nesting in larger-scale models. Boundary conditions for the simulation !> are read from NetCDF file and are prescribed onto the respective arrays. !> Further, a mass-flux correction is performed to maintain the mass balance. !--------------------------------------------------------------------------------! MODULE nesting_offl_mod USE arrays_3d, & ONLY: dzw, & e, & drho_air_zw, & diss, & pt, & pt_init, & q, & q_init, & rdf, & rdf_sc, & rho_air, & rho_air_zw, & s, & u, & u_init, & ug, & v, & v_init, & vg, & w, & zu, & zw USE basic_constants_and_equations_mod, & ONLY: g, & pi USE chem_modules, & ONLY: chem_species, nesting_offline_chem USE control_parameters, & ONLY: air_chemistry, & bc_dirichlet_l, & bc_dirichlet_n, & bc_dirichlet_r, & bc_dirichlet_s, & coupling_char, & dt_3d, & dz, & constant_diffusion, & child_domain, & debug_output_timestep, & end_time, & humidity, & initializing_actions, & message_string, & nesting_offline, & neutral, & passive_scalar, & rans_mode, & rans_tke_e, & rayleigh_damping_factor, & rayleigh_damping_height, & salsa, & spinup_time, & time_since_reference_point, & volume_flow USE cpulog, & ONLY: cpu_log, & log_point, & log_point_s USE grid_variables USE indices, & ONLY: nbgp, nx, nxl, nxlg, nxlu, nxr, nxrg, ny, nys, & nysv, nysg, nyn, nyng, nzb, nz, nzt, & topo_top_ind, & wall_flags_total_0 USE kinds USE netcdf_data_input_mod, & ONLY: check_existence, & close_input_file, & get_dimension_length, & get_variable, & get_variable_pr, & input_pids_dynamic, & inquire_num_variables, & inquire_variable_names, & input_file_dynamic, & num_var_pids, & open_read_file, & pids_id USE pegrid USE salsa_mod, & ONLY: salsa_nesting_offl_bc, & salsa_nesting_offl_init, & salsa_nesting_offl_input IMPLICIT NONE ! !-- Define data type for nesting in larger-scale models like COSMO. !-- Data type comprises u, v, w, pt, and q at lateral and top boundaries. TYPE nest_offl_type CHARACTER(LEN=16) :: char_l = 'ls_forcing_left_' !< leading substring for variables at left boundary CHARACTER(LEN=17) :: char_n = 'ls_forcing_north_' !< leading substring for variables at north boundary CHARACTER(LEN=17) :: char_r = 'ls_forcing_right_' !< leading substring for variables at right boundary CHARACTER(LEN=17) :: char_s = 'ls_forcing_south_' !< leading substring for variables at south boundary CHARACTER(LEN=15) :: char_t = 'ls_forcing_top_' !< leading substring for variables at top boundary CHARACTER(LEN=100), DIMENSION(:), ALLOCATABLE :: var_names !< list of variable in dynamic input file CHARACTER(LEN=100), DIMENSION(:), ALLOCATABLE :: var_names_chem_l !< names of mesoscale nested chemistry variables at left boundary CHARACTER(LEN=100), DIMENSION(:), ALLOCATABLE :: var_names_chem_n !< names of mesoscale nested chemistry variables at north boundary CHARACTER(LEN=100), DIMENSION(:), ALLOCATABLE :: var_names_chem_r !< names of mesoscale nested chemistry variables at right boundary CHARACTER(LEN=100), DIMENSION(:), ALLOCATABLE :: var_names_chem_s !< names of mesoscale nested chemistry variables at south boundary CHARACTER(LEN=100), DIMENSION(:), ALLOCATABLE :: var_names_chem_t !< names of mesoscale nested chemistry variables at top boundary INTEGER(iwp) :: nt !< number of time levels in dynamic input file INTEGER(iwp) :: nzu !< number of vertical levels on scalar grid in dynamic input file INTEGER(iwp) :: nzw !< number of vertical levels on w grid in dynamic input file INTEGER(iwp) :: tind !< time index for reference time in mesoscale-offline nesting INTEGER(iwp) :: tind_p !< time index for following time in mesoscale-offline nesting LOGICAL :: init = .FALSE. !< flag indicating that offline nesting is already initialized LOGICAL, DIMENSION(:), ALLOCATABLE :: chem_from_file_l !< flags inidicating whether left boundary data for chemistry is in dynamic input file LOGICAL, DIMENSION(:), ALLOCATABLE :: chem_from_file_n !< flags inidicating whether north boundary data for chemistry is in dynamic input file LOGICAL, DIMENSION(:), ALLOCATABLE :: chem_from_file_r !< flags inidicating whether right boundary data for chemistry is in dynamic input file LOGICAL, DIMENSION(:), ALLOCATABLE :: chem_from_file_s !< flags inidicating whether south boundary data for chemistry is in dynamic input file LOGICAL, DIMENSION(:), ALLOCATABLE :: chem_from_file_t !< flags inidicating whether top boundary data for chemistry is in dynamic input file REAL(wp), DIMENSION(:), ALLOCATABLE :: surface_pressure !< time dependent surface pressure REAL(wp), DIMENSION(:), ALLOCATABLE :: time !< time levels in dynamic input file REAL(wp), DIMENSION(:), ALLOCATABLE :: zu_atmos !< vertical levels at scalar grid in dynamic input file REAL(wp), DIMENSION(:), ALLOCATABLE :: zw_atmos !< vertical levels at w grid in dynamic input file REAL(wp), DIMENSION(:,:), ALLOCATABLE :: ug !< domain-averaged geostrophic component REAL(wp), DIMENSION(:,:), ALLOCATABLE :: vg !< domain-averaged geostrophic component REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: u_left !< u-component at left boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: v_left !< v-component at left boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: w_left !< w-component at left boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: q_left !< mixing ratio at left boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: pt_left !< potentital temperautre at left boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: u_north !< u-component at north boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: v_north !< v-component at north boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: w_north !< w-component at north boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: q_north !< mixing ratio at north boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: pt_north !< potentital temperautre at north boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: u_right !< u-component at right boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: v_right !< v-component at right boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: w_right !< w-component at right boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: q_right !< mixing ratio at right boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: pt_right !< potentital temperautre at right boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: u_south !< u-component at south boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: v_south !< v-component at south boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: w_south !< w-component at south boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: q_south !< mixing ratio at south boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: pt_south !< potentital temperautre at south boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: u_top !< u-component at top boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: v_top !< v-component at top boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: w_top !< w-component at top boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: q_top !< mixing ratio at top boundary REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: pt_top !< potentital temperautre at top boundary REAL(wp), DIMENSION(:,:,:,:), ALLOCATABLE :: chem_left !< chemical species at left boundary REAL(wp), DIMENSION(:,:,:,:), ALLOCATABLE :: chem_north !< chemical species at left boundary REAL(wp), DIMENSION(:,:,:,:), ALLOCATABLE :: chem_right !< chemical species at left boundary REAL(wp), DIMENSION(:,:,:,:), ALLOCATABLE :: chem_south !< chemical species at left boundary REAL(wp), DIMENSION(:,:,:,:), ALLOCATABLE :: chem_top !< chemical species at left boundary END TYPE nest_offl_type REAL(wp) :: fac_dt !< interpolation factor REAL(wp) :: zi_ribulk = 0.0_wp !< boundary-layer depth according to bulk Richardson criterion, i.e. the height where Ri_bulk exceeds the critical !< bulk Richardson number of 0.2 TYPE(nest_offl_type) :: nest_offl !< data structure for data input at lateral and top boundaries (provided by Inifor) SAVE PRIVATE ! !-- Public subroutines PUBLIC nesting_offl_bc, & nesting_offl_calc_zi, & nesting_offl_check_parameters, & nesting_offl_geostrophic_wind, & nesting_offl_header, & nesting_offl_init, & nesting_offl_input, & nesting_offl_interpolation_factor, & nesting_offl_mass_conservation, & nesting_offl_parin ! !-- Public variables PUBLIC zi_ribulk INTERFACE nesting_offl_bc MODULE PROCEDURE nesting_offl_bc END INTERFACE nesting_offl_bc INTERFACE nesting_offl_calc_zi MODULE PROCEDURE nesting_offl_calc_zi END INTERFACE nesting_offl_calc_zi INTERFACE nesting_offl_check_parameters MODULE PROCEDURE nesting_offl_check_parameters END INTERFACE nesting_offl_check_parameters INTERFACE nesting_offl_geostrophic_wind MODULE PROCEDURE nesting_offl_geostrophic_wind END INTERFACE nesting_offl_geostrophic_wind INTERFACE nesting_offl_header MODULE PROCEDURE nesting_offl_header END INTERFACE nesting_offl_header INTERFACE nesting_offl_init MODULE PROCEDURE nesting_offl_init END INTERFACE nesting_offl_init INTERFACE nesting_offl_input MODULE PROCEDURE nesting_offl_input END INTERFACE nesting_offl_input INTERFACE nesting_offl_interpolation_factor MODULE PROCEDURE nesting_offl_interpolation_factor END INTERFACE nesting_offl_interpolation_factor INTERFACE nesting_offl_mass_conservation MODULE PROCEDURE nesting_offl_mass_conservation END INTERFACE nesting_offl_mass_conservation INTERFACE nesting_offl_parin MODULE PROCEDURE nesting_offl_parin END INTERFACE nesting_offl_parin CONTAINS !------------------------------------------------------------------------------! ! Description: ! ------------ !> Reads data at lateral and top boundaries derived from larger-scale model. !------------------------------------------------------------------------------! SUBROUTINE nesting_offl_input INTEGER(iwp) :: n !< running index for chemistry variables ! !-- Initialize INIFOR forcing in first call. IF ( .NOT. nest_offl%init ) THEN #if defined ( __netcdf ) ! !-- Open file in read-only mode CALL open_read_file( TRIM( input_file_dynamic ) // & TRIM( coupling_char ), pids_id ) ! !-- At first, inquire all variable names. CALL inquire_num_variables( pids_id, num_var_pids ) ! !-- Allocate memory to store variable names. ALLOCATE( nest_offl%var_names(1:num_var_pids) ) CALL inquire_variable_names( pids_id, nest_offl%var_names ) ! !-- Read time dimension, allocate memory and finally read time array CALL get_dimension_length( pids_id, nest_offl%nt, 'time' ) IF ( check_existence( nest_offl%var_names, 'time' ) ) THEN ALLOCATE( nest_offl%time(0:nest_offl%nt-1) ) CALL get_variable( pids_id, 'time', nest_offl%time ) ENDIF ! !-- Read vertical dimension of scalar und w grid CALL get_dimension_length( pids_id, nest_offl%nzu, 'z' ) CALL get_dimension_length( pids_id, nest_offl%nzw, 'zw' ) IF ( check_existence( nest_offl%var_names, 'z' ) ) THEN ALLOCATE( nest_offl%zu_atmos(1:nest_offl%nzu) ) CALL get_variable( pids_id, 'z', nest_offl%zu_atmos ) ENDIF IF ( check_existence( nest_offl%var_names, 'zw' ) ) THEN ALLOCATE( nest_offl%zw_atmos(1:nest_offl%nzw) ) CALL get_variable( pids_id, 'zw', nest_offl%zw_atmos ) ENDIF ! !-- Read surface pressure IF ( check_existence( nest_offl%var_names, & 'surface_forcing_surface_pressure' ) ) THEN ALLOCATE( nest_offl%surface_pressure(0:nest_offl%nt-1) ) CALL get_variable( pids_id, & 'surface_forcing_surface_pressure', & nest_offl%surface_pressure ) ENDIF ! !-- Close input file CALL close_input_file( pids_id ) #endif ENDIF ! !-- Check if dynamic driver data input is required. IF ( nest_offl%time(nest_offl%tind_p) <= & MAX( time_since_reference_point, 0.0_wp) .OR. & .NOT. nest_offl%init ) THEN CONTINUE ! !-- Return otherwise ELSE RETURN ENDIF ! !-- CPU measurement CALL cpu_log( log_point_s(86), 'NetCDF input forcing', 'start' ) ! !-- Obtain time index for current point in time. Note, the time coordinate !-- in the input file is always relative to the initial time in UTC, i.e. !-- the time coordinate always starts at 0.0 even if the initial UTC is e.g. !-- 7200.0. Further, since time_since_reference_point is negativ here when !-- spinup is applied, use MAX function to obtain correct time index. nest_offl%tind = MINLOC( ABS( nest_offl%time - & MAX( time_since_reference_point, 0.0_wp) & ), DIM = 1 ) - 1 nest_offl%tind_p = nest_offl%tind + 1 ! !-- Open file in read-only mode #if defined ( __netcdf ) CALL open_read_file( TRIM( input_file_dynamic ) // & TRIM( coupling_char ), pids_id ) ! !-- Read geostrophic wind components ! DO t = nest_offl%tind, nest_offl%tind_p ! CALL get_variable_pr( pids_id, 'ls_forcing_ug', t+1, & ! nest_offl%ug(t-nest_offl%tind,nzb+1:nzt) ) ! CALL get_variable_pr( pids_id, 'ls_forcing_vg', t+1, & ! nest_offl%vg(t-nest_offl%tind,nzb+1:nzt) ) ! ENDDO ! !-- Read data at lateral and top boundaries. Please note, at left and !-- right domain boundary, yz-layers are read for u, v, w, pt and q. !-- For the v-component, the data starts at nysv, while for the other !-- quantities the data starts at nys. This is equivalent at the north !-- and south domain boundary for the u-component. !-- Note, lateral data is also accessed by parallel IO, which is the reason !-- why different arguments are passed depending on the boundary control !-- flags. Cores that do not belong to the respective boundary just make !-- a dummy read with count = 0, just in order to participate the collective !-- operation. !-- Read data for western boundary CALL get_variable( pids_id, 'ls_forcing_left_u', & nest_offl%u_left, & ! array to be read MERGE( nys+1, 1, bc_dirichlet_l), & ! start index y direction MERGE( nzb+1, 1, bc_dirichlet_l), & ! start index z direction MERGE( nest_offl%tind+1, 1, bc_dirichlet_l), & ! start index time dimension MERGE( nyn-nys+1, 0, bc_dirichlet_l), & ! number of elements along y MERGE( nest_offl%nzu, 0, bc_dirichlet_l), & ! number of elements alogn z MERGE( 2, 0, bc_dirichlet_l), & ! number of time steps (2 or 0) .TRUE. ) ! parallel IO when compiled accordingly CALL get_variable( pids_id, 'ls_forcing_left_v', & nest_offl%v_left, & MERGE( nysv, 1, bc_dirichlet_l), & MERGE( nzb+1, 1, bc_dirichlet_l), & MERGE( nest_offl%tind+1, 1, bc_dirichlet_l), & MERGE( nyn-nysv+1, 0, bc_dirichlet_l), & MERGE( nest_offl%nzu, 0, bc_dirichlet_l), & MERGE( 2, 0, bc_dirichlet_l), & .TRUE. ) CALL get_variable( pids_id, 'ls_forcing_left_w', & nest_offl%w_left, & MERGE( nys+1, 1, bc_dirichlet_l), & MERGE( nzb+1, 1, bc_dirichlet_l), & MERGE( nest_offl%tind+1, 1, bc_dirichlet_l), & MERGE( nyn-nys+1, 0, bc_dirichlet_l), & MERGE( nest_offl%nzw, 0, bc_dirichlet_l), & MERGE( 2, 0, bc_dirichlet_l), & .TRUE. ) IF ( .NOT. neutral ) THEN CALL get_variable( pids_id, 'ls_forcing_left_pt', & nest_offl%pt_left, & MERGE( nys+1, 1, bc_dirichlet_l), & MERGE( nzb+1, 1, bc_dirichlet_l), & MERGE( nest_offl%tind+1, 1, bc_dirichlet_l), & MERGE( nyn-nys+1, 0, bc_dirichlet_l), & MERGE( nest_offl%nzu, 0, bc_dirichlet_l), & MERGE( 2, 0, bc_dirichlet_l), & .TRUE. ) ENDIF IF ( humidity ) THEN CALL get_variable( pids_id, 'ls_forcing_left_qv', & nest_offl%q_left, & MERGE( nys+1, 1, bc_dirichlet_l), & MERGE( nzb+1, 1, bc_dirichlet_l), & MERGE( nest_offl%tind+1, 1, bc_dirichlet_l), & MERGE( nyn-nys+1, 0, bc_dirichlet_l), & MERGE( nest_offl%nzu, 0, bc_dirichlet_l), & MERGE( 2, 0, bc_dirichlet_l), & .TRUE. ) ENDIF IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND(nest_offl%var_names_chem_l, 1) IF ( check_existence( nest_offl%var_names, & nest_offl%var_names_chem_l(n) ) ) THEN CALL get_variable( pids_id, & TRIM( nest_offl%var_names_chem_l(n) ), & nest_offl%chem_left(:,:,:,n), & MERGE( nys+1, 1, bc_dirichlet_l), & MERGE( nzb+1, 1, bc_dirichlet_l), & MERGE( nest_offl%tind+1, 1, bc_dirichlet_l), & MERGE( nyn-nys+1, 0, bc_dirichlet_l), & MERGE( nest_offl%nzu, 0, bc_dirichlet_l), & MERGE( 2, 0, bc_dirichlet_l), & .TRUE. ) nest_offl%chem_from_file_l(n) = .TRUE. ENDIF ENDDO ENDIF ! !-- Read data for eastern boundary CALL get_variable( pids_id, 'ls_forcing_right_u', & nest_offl%u_right, & MERGE( nys+1, 1, bc_dirichlet_r), & MERGE( nzb+1, 1, bc_dirichlet_r), & MERGE( nest_offl%tind+1, 1, bc_dirichlet_r), & MERGE( nyn-nys+1, 0, bc_dirichlet_r), & MERGE( nest_offl%nzu, 0, bc_dirichlet_r), & MERGE( 2, 0, bc_dirichlet_r), & .TRUE. ) CALL get_variable( pids_id, 'ls_forcing_right_v', & nest_offl%v_right, & MERGE( nysv, 1, bc_dirichlet_r), & MERGE( nzb+1, 1, bc_dirichlet_r), & MERGE( nest_offl%tind+1, 1, bc_dirichlet_r), & MERGE( nyn-nysv+1, 0, bc_dirichlet_r), & MERGE( nest_offl%nzu, 0, bc_dirichlet_r), & MERGE( 2, 0, bc_dirichlet_r), & .TRUE. ) CALL get_variable( pids_id, 'ls_forcing_right_w', & nest_offl%w_right, & MERGE( nys+1, 1, bc_dirichlet_r), & MERGE( nzb+1, 1, bc_dirichlet_r), & MERGE( nest_offl%tind+1, 1, bc_dirichlet_r), & MERGE( nyn-nys+1, 0, bc_dirichlet_r), & MERGE( nest_offl%nzw, 0, bc_dirichlet_r), & MERGE( 2, 0, bc_dirichlet_r), & .TRUE. ) IF ( .NOT. neutral ) THEN CALL get_variable( pids_id, 'ls_forcing_right_pt', & nest_offl%pt_right, & MERGE( nys+1, 1, bc_dirichlet_r), & MERGE( nzb+1, 1, bc_dirichlet_r), & MERGE( nest_offl%tind+1, 1, bc_dirichlet_r), & MERGE( nyn-nys+1, 0, bc_dirichlet_r), & MERGE( nest_offl%nzu, 0, bc_dirichlet_r), & MERGE( 2, 0, bc_dirichlet_r), & .TRUE. ) ENDIF IF ( humidity ) THEN CALL get_variable( pids_id, 'ls_forcing_right_qv', & nest_offl%q_right, & MERGE( nys+1, 1, bc_dirichlet_r), & MERGE( nzb+1, 1, bc_dirichlet_r), & MERGE( nest_offl%tind+1, 1, bc_dirichlet_r), & MERGE( nyn-nys+1, 0, bc_dirichlet_r), & MERGE( nest_offl%nzu, 0, bc_dirichlet_r), & MERGE( 2, 0, bc_dirichlet_r), & .TRUE. ) ENDIF IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND(nest_offl%var_names_chem_r, 1) IF ( check_existence( nest_offl%var_names, & nest_offl%var_names_chem_r(n) ) ) THEN CALL get_variable( pids_id, & TRIM( nest_offl%var_names_chem_r(n) ), & nest_offl%chem_right(:,:,:,n), & MERGE( nys+1, 1, bc_dirichlet_r), & MERGE( nzb+1, 1, bc_dirichlet_r), & MERGE( nest_offl%tind+1, 1, bc_dirichlet_r), & MERGE( nyn-nys+1, 0, bc_dirichlet_r), & MERGE( nest_offl%nzu, 0, bc_dirichlet_r), & MERGE( 2, 0, bc_dirichlet_r), & .TRUE. ) nest_offl%chem_from_file_r(n) = .TRUE. ENDIF ENDDO ENDIF ! !-- Read data for northern boundary CALL get_variable( pids_id, 'ls_forcing_north_u', & ! array to be read nest_offl%u_north, & ! start index x direction MERGE( nxlu, 1, bc_dirichlet_n ), & ! start index z direction MERGE( nzb+1, 1, bc_dirichlet_n ), & ! start index time dimension MERGE( nest_offl%tind+1, 1, bc_dirichlet_n ), & ! number of elements along x MERGE( nxr-nxlu+1, 0, bc_dirichlet_n ), & ! number of elements alogn z MERGE( nest_offl%nzu, 0, bc_dirichlet_n ), & ! number of time steps (2 or 0) MERGE( 2, 0, bc_dirichlet_n ), & ! parallel IO when compiled accordingly .TRUE. ) CALL get_variable( pids_id, 'ls_forcing_north_v', & ! array to be read nest_offl%v_north, & ! start index x direction MERGE( nxl+1, 1, bc_dirichlet_n ), & ! start index z direction MERGE( nzb+1, 1, bc_dirichlet_n ), & ! start index time dimension MERGE( nest_offl%tind+1, 1, bc_dirichlet_n ), & ! number of elements along x MERGE( nxr-nxl+1, 0, bc_dirichlet_n ), & ! number of elements alogn z MERGE( nest_offl%nzu, 0, bc_dirichlet_n ), & ! number of time steps (2 or 0) MERGE( 2, 0, bc_dirichlet_n ), & ! parallel IO when compiled accordingly .TRUE. ) CALL get_variable( pids_id, 'ls_forcing_north_w', & ! array to be read nest_offl%w_north, & ! start index x direction MERGE( nxl+1, 1, bc_dirichlet_n ), & ! start index z direction MERGE( nzb+1, 1, bc_dirichlet_n ), & ! start index time dimension MERGE( nest_offl%tind+1, 1, bc_dirichlet_n ), & ! number of elements along x MERGE( nxr-nxl+1, 0, bc_dirichlet_n ), & ! number of elements alogn z MERGE( nest_offl%nzw, 0, bc_dirichlet_n ), & ! number of time steps (2 or 0) MERGE( 2, 0, bc_dirichlet_n ), & ! parallel IO when compiled accordingly .TRUE. ) IF ( .NOT. neutral ) THEN CALL get_variable( pids_id, 'ls_forcing_north_pt', & ! array to be read nest_offl%pt_north, & ! start index x direction MERGE( nxl+1, 1, bc_dirichlet_n ), & ! start index z direction MERGE( nzb+1, 1, bc_dirichlet_n ), & ! start index time dimension MERGE( nest_offl%tind+1, 1, bc_dirichlet_n ), & ! number of elements along x MERGE( nxr-nxl+1, 0, bc_dirichlet_n ), & ! number of elements alogn z MERGE( nest_offl%nzu, 0, bc_dirichlet_n ), & ! number of time steps (2 or 0) MERGE( 2, 0, bc_dirichlet_n ), & ! parallel IO when compiled accordingly .TRUE. ) ENDIF IF ( humidity ) THEN CALL get_variable( pids_id, 'ls_forcing_north_qv', & ! array to be read nest_offl%q_north, & ! start index x direction MERGE( nxl+1, 1, bc_dirichlet_n ), & ! start index z direction MERGE( nzb+1, 1, bc_dirichlet_n ), & ! start index time dimension MERGE( nest_offl%tind+1, 1, bc_dirichlet_n ), & ! number of elements along x MERGE( nxr-nxl+1, 0, bc_dirichlet_n ), & ! number of elements alogn z MERGE( nest_offl%nzu, 0, bc_dirichlet_n ), & ! number of time steps (2 or 0) MERGE( 2, 0, bc_dirichlet_n ), & ! parallel IO when compiled accordingly .TRUE. ) ENDIF IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND(nest_offl%var_names_chem_n, 1) IF ( check_existence( nest_offl%var_names, & nest_offl%var_names_chem_n(n) ) ) THEN CALL get_variable( pids_id, & TRIM( nest_offl%var_names_chem_n(n) ), & nest_offl%chem_north(:,:,:,n), & MERGE( nxl+1, 1, bc_dirichlet_n ), & MERGE( nzb+1, 1, bc_dirichlet_n ), & MERGE( nest_offl%tind+1, 1, bc_dirichlet_n ), & MERGE( nxr-nxl+1, 0, bc_dirichlet_n ), & MERGE( nest_offl%nzu, 0, bc_dirichlet_n ), & MERGE( 2, 0, bc_dirichlet_n ), & .TRUE. ) nest_offl%chem_from_file_n(n) = .TRUE. ENDIF ENDDO ENDIF ! !-- Read data for southern boundary CALL get_variable( pids_id, 'ls_forcing_south_u', & ! array to be read nest_offl%u_south, & ! start index x direction MERGE( nxlu, 1, bc_dirichlet_s ), & ! start index z direction MERGE( nzb+1, 1, bc_dirichlet_s ), & ! start index time dimension MERGE( nest_offl%tind+1, 1, bc_dirichlet_s ), & ! number of elements along x MERGE( nxr-nxlu+1, 0, bc_dirichlet_s ), & ! number of elements alogn z MERGE( nest_offl%nzu, 0, bc_dirichlet_s ), & ! number of time steps (2 or 0) MERGE( 2, 0, bc_dirichlet_s ), & ! parallel IO when compiled accordingly .TRUE. ) CALL get_variable( pids_id, 'ls_forcing_south_v', & ! array to be read nest_offl%v_south, & ! start index x direction MERGE( nxl+1, 1, bc_dirichlet_s ), & ! start index z direction MERGE( nzb+1, 1, bc_dirichlet_s ), & ! start index time dimension MERGE( nest_offl%tind+1, 1, bc_dirichlet_s ), & ! number of elements along x MERGE( nxr-nxl+1, 0, bc_dirichlet_s ), & ! number of elements alogn z MERGE( nest_offl%nzu, 0, bc_dirichlet_s ), & ! number of time steps (2 or 0) MERGE( 2, 0, bc_dirichlet_s ), & ! parallel IO when compiled accordingly .TRUE. ) CALL get_variable( pids_id, 'ls_forcing_south_w', & ! array to be read nest_offl%w_south, & ! start index x direction MERGE( nxl+1, 1, bc_dirichlet_s ), & ! start index z direction MERGE( nzb+1, 1, bc_dirichlet_s ), & ! start index time dimension MERGE( nest_offl%tind+1, 1, bc_dirichlet_s ), & ! number of elements along x MERGE( nxr-nxl+1, 0, bc_dirichlet_s ), & ! number of elements alogn z MERGE( nest_offl%nzw, 0, bc_dirichlet_s ), & ! number of time steps (2 or 0) MERGE( 2, 0, bc_dirichlet_s ), & ! parallel IO when compiled accordingly .TRUE. ) IF ( .NOT. neutral ) THEN CALL get_variable( pids_id, 'ls_forcing_south_pt', & ! array to be read nest_offl%pt_south, & ! start index x direction MERGE( nxl+1, 1, bc_dirichlet_s ), & ! start index z direction MERGE( nzb+1, 1, bc_dirichlet_s ), & ! start index time dimension MERGE( nest_offl%tind+1, 1, bc_dirichlet_s ), & ! number of elements along x MERGE( nxr-nxl+1, 0, bc_dirichlet_s ), & ! number of elements alogn z MERGE( nest_offl%nzu, 0, bc_dirichlet_s ), & ! number of time steps (2 or 0) MERGE( 2, 0, bc_dirichlet_s ), & ! parallel IO when compiled accordingly .TRUE. ) ENDIF IF ( humidity ) THEN CALL get_variable( pids_id, 'ls_forcing_south_qv', & ! array to be read nest_offl%q_south, & ! start index x direction MERGE( nxl+1, 1, bc_dirichlet_s ), & ! start index z direction MERGE( nzb+1, 1, bc_dirichlet_s ), & ! start index time dimension MERGE( nest_offl%tind+1, 1, bc_dirichlet_s ), & ! number of elements along x MERGE( nxr-nxl+1, 0, bc_dirichlet_s ), & ! number of elements alogn z MERGE( nest_offl%nzu, 0, bc_dirichlet_s ), & ! number of time steps (2 or 0) MERGE( 2, 0, bc_dirichlet_s ), & ! parallel IO when compiled accordingly .TRUE. ) ENDIF IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND(nest_offl%var_names_chem_s, 1) IF ( check_existence( nest_offl%var_names, & nest_offl%var_names_chem_s(n) ) ) THEN CALL get_variable( pids_id, & TRIM( nest_offl%var_names_chem_s(n) ), & nest_offl%chem_south(:,:,:,n), & MERGE( nxl+1, 1, bc_dirichlet_s ), & MERGE( nzb+1, 1, bc_dirichlet_s ), & MERGE( nest_offl%tind+1, 1, bc_dirichlet_s ), & MERGE( nxr-nxl+1, 0, bc_dirichlet_s ), & MERGE( nest_offl%nzu, 0, bc_dirichlet_s ), & MERGE( 2, 0, bc_dirichlet_s ), & .TRUE. ) nest_offl%chem_from_file_s(n) = .TRUE. ENDIF ENDDO ENDIF ! !-- Top boundary CALL get_variable( pids_id, 'ls_forcing_top_u', & nest_offl%u_top(0:1,nys:nyn,nxlu:nxr), & nxlu, nys+1, nest_offl%tind+1, & nxr-nxlu+1, nyn-nys+1, 2, .TRUE. ) CALL get_variable( pids_id, 'ls_forcing_top_v', & nest_offl%v_top(0:1,nysv:nyn,nxl:nxr), & nxl+1, nysv, nest_offl%tind+1, & nxr-nxl+1, nyn-nysv+1, 2, .TRUE. ) CALL get_variable( pids_id, 'ls_forcing_top_w', & nest_offl%w_top(0:1,nys:nyn,nxl:nxr), & nxl+1, nys+1, nest_offl%tind+1, & nxr-nxl+1, nyn-nys+1, 2, .TRUE. ) IF ( .NOT. neutral ) THEN CALL get_variable( pids_id, 'ls_forcing_top_pt', & nest_offl%pt_top(0:1,nys:nyn,nxl:nxr), & nxl+1, nys+1, nest_offl%tind+1, & nxr-nxl+1, nyn-nys+1, 2, .TRUE. ) ENDIF IF ( humidity ) THEN CALL get_variable( pids_id, 'ls_forcing_top_qv', & nest_offl%q_top(0:1,nys:nyn,nxl:nxr), & nxl+1, nys+1, nest_offl%tind+1, & nxr-nxl+1, nyn-nys+1, 2, .TRUE. ) ENDIF IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND(nest_offl%var_names_chem_t, 1) IF ( check_existence( nest_offl%var_names, & nest_offl%var_names_chem_t(n) ) ) THEN CALL get_variable( pids_id, & TRIM( nest_offl%var_names_chem_t(n) ), & nest_offl%chem_top(0:1,nys:nyn,nxl:nxr,n), & nxl+1, nys+1, nest_offl%tind+1, & nxr-nxl+1, nyn-nys+1, 2, .TRUE. ) nest_offl%chem_from_file_t(n) = .TRUE. ENDIF ENDDO ENDIF ! !-- Close input file CALL close_input_file( pids_id ) #endif ! !-- Set control flag to indicate that boundary data has been initially !-- input. nest_offl%init = .TRUE. ! !-- Call offline nesting for salsa IF ( salsa ) CALL salsa_nesting_offl_input ! !-- End of CPU measurement CALL cpu_log( log_point_s(86), 'NetCDF input forcing', 'stop' ) END SUBROUTINE nesting_offl_input !------------------------------------------------------------------------------! ! Description: ! ------------ !> In this subroutine a constant mass within the model domain is guaranteed. !> Larger-scale models may be based on a compressible equation system, which is !> not consistent with PALMs incompressible equation system. In order to avoid !> a decrease or increase of mass during the simulation, non-divergent flow !> through the lateral and top boundaries is compensated by the vertical wind !> component at the top boundary. !------------------------------------------------------------------------------! SUBROUTINE nesting_offl_mass_conservation INTEGER(iwp) :: i !< grid index in x-direction INTEGER(iwp) :: j !< grid index in y-direction INTEGER(iwp) :: k !< grid index in z-direction REAL(wp) :: d_area_t !< inverse of the total area of the horizontal model domain REAL(wp) :: w_correct !< vertical velocity increment required to compensate non-divergent flow through the boundaries REAL(wp), DIMENSION(1:3) :: volume_flow_l !< local volume flow IF ( debug_output_timestep ) CALL debug_message( 'nesting_offl_mass_conservation', 'start' ) CALL cpu_log( log_point(58), 'offline nesting', 'start' ) volume_flow = 0.0_wp volume_flow_l = 0.0_wp d_area_t = 1.0_wp / ( ( nx + 1 ) * dx * ( ny + 1 ) * dy ) IF ( bc_dirichlet_l ) THEN i = nxl DO j = nys, nyn DO k = nzb+1, nzt volume_flow_l(1) = volume_flow_l(1) + u(k,j,i) * dzw(k) * dy & * rho_air(k) & * MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,j,i), 1 ) ) ENDDO ENDDO ENDIF IF ( bc_dirichlet_r ) THEN i = nxr+1 DO j = nys, nyn DO k = nzb+1, nzt volume_flow_l(1) = volume_flow_l(1) - u(k,j,i) * dzw(k) * dy & * rho_air(k) & * MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,j,i), 1 ) ) ENDDO ENDDO ENDIF IF ( bc_dirichlet_s ) THEN j = nys DO i = nxl, nxr DO k = nzb+1, nzt volume_flow_l(2) = volume_flow_l(2) + v(k,j,i) * dzw(k) * dx & * rho_air(k) & * MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,j,i), 2 ) ) ENDDO ENDDO ENDIF IF ( bc_dirichlet_n ) THEN j = nyn+1 DO i = nxl, nxr DO k = nzb+1, nzt volume_flow_l(2) = volume_flow_l(2) - v(k,j,i) * dzw(k) * dx & * rho_air(k) & * MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,j,i), 2 ) ) ENDDO ENDDO ENDIF ! !-- Top boundary k = nzt DO i = nxl, nxr DO j = nys, nyn volume_flow_l(3) = volume_flow_l(3) - rho_air_zw(k) * w(k,j,i) * dx * dy ENDDO ENDDO #if defined( __parallel ) IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) CALL MPI_ALLREDUCE( volume_flow_l, volume_flow, 3, MPI_REAL, MPI_SUM, & comm2d, ierr ) #else volume_flow = volume_flow_l #endif w_correct = SUM( volume_flow ) * d_area_t * drho_air_zw(nzt) DO i = nxl, nxr DO j = nys, nyn DO k = nzt, nzt + 1 w(k,j,i) = w(k,j,i) + w_correct & * MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,j,i), 3 ) ) ENDDO ENDDO ENDDO CALL cpu_log( log_point(58), 'offline nesting', 'stop' ) IF ( debug_output_timestep ) CALL debug_message( 'nesting_offl_mass_conservation', 'end' ) END SUBROUTINE nesting_offl_mass_conservation !------------------------------------------------------------------------------! ! Description: ! ------------ !> Set the lateral and top boundary conditions in case the PALM domain is !> nested offline in a mesoscale model. Further, average boundary data and !> determine mean profiles, further used for correct damping in the sponge !> layer. !------------------------------------------------------------------------------! SUBROUTINE nesting_offl_bc USE exchange_horiz_mod, & ONLY: exchange_horiz INTEGER(iwp) :: i !< running index x-direction INTEGER(iwp) :: j !< running index y-direction INTEGER(iwp) :: k !< running index z-direction INTEGER(iwp) :: n !< running index for chemical species REAL(wp), DIMENSION(nzb:nzt+1) :: pt_ref !< reference profile for potential temperature REAL(wp), DIMENSION(nzb:nzt+1) :: pt_ref_l !< reference profile for potential temperature on subdomain REAL(wp), DIMENSION(nzb:nzt+1) :: q_ref !< reference profile for mixing ratio REAL(wp), DIMENSION(nzb:nzt+1) :: q_ref_l !< reference profile for mixing ratio on subdomain REAL(wp), DIMENSION(nzb:nzt+1) :: u_ref !< reference profile for u-component REAL(wp), DIMENSION(nzb:nzt+1) :: u_ref_l !< reference profile for u-component on subdomain REAL(wp), DIMENSION(nzb:nzt+1) :: v_ref !< reference profile for v-component REAL(wp), DIMENSION(nzb:nzt+1) :: v_ref_l !< reference profile for v-component on subdomain REAL(wp), DIMENSION(:,:), ALLOCATABLE :: ref_chem !< reference profile for chemical species REAL(wp), DIMENSION(:,:), ALLOCATABLE :: ref_chem_l !< reference profile for chemical species on subdomain IF ( debug_output_timestep ) CALL debug_message( 'nesting_offl_bc', 'start' ) CALL cpu_log( log_point(58), 'offline nesting', 'start' ) ! !-- Initialize mean profiles, derived from boundary data, to zero pt_ref = 0.0_wp q_ref = 0.0_wp u_ref = 0.0_wp v_ref = 0.0_wp pt_ref_l = 0.0_wp q_ref_l = 0.0_wp u_ref_l = 0.0_wp v_ref_l = 0.0_wp ! !-- If required, allocate temporary arrays to compute chemistry mean profiles IF ( air_chemistry .AND. nesting_offline_chem ) THEN ALLOCATE( ref_chem(nzb:nzt+1,1:UBOUND( chem_species, 1 ) ) ) ALLOCATE( ref_chem_l(nzb:nzt+1,1:UBOUND( chem_species, 1 ) ) ) ref_chem = 0.0_wp ref_chem_l = 0.0_wp ENDIF ! !-- Set boundary conditions of u-, v-, w-component, as well as q, and pt. !-- Note, boundary values at the left boundary: i=-1 (v,w,pt,q) and !-- i=0 (u), at the right boundary: i=nxr+1 (all), at the south boundary: !-- j=-1 (u,w,pt,q) and j=0 (v), at the north boundary: j=nyn+1 (all). !-- Please note, at the left (for u) and south (for v) boundary, values !-- for u and v are set also at i/j=-1, since these values are used in !-- boundary_conditions() to restore prognostic values. !-- Further, sum up data to calculate mean profiles from boundary data, !-- used for Rayleigh damping. IF ( bc_dirichlet_l ) THEN DO j = nys, nyn DO k = nzb+1, nzt u(k,j,0) = interpolate_in_time( nest_offl%u_left(0,k,j), & nest_offl%u_left(1,k,j), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,j,0), 1 ) ) u(k,j,-1) = u(k,j,0) ENDDO u_ref_l(nzb+1:nzt) = u_ref_l(nzb+1:nzt) + u(nzb+1:nzt,j,0) ENDDO DO j = nys, nyn DO k = nzb+1, nzt-1 w(k,j,-1) = interpolate_in_time( nest_offl%w_left(0,k,j), & nest_offl%w_left(1,k,j), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,j,-1), 3 ) ) ENDDO w(nzt,j,-1) = w(nzt-1,j,-1) ENDDO DO j = nysv, nyn DO k = nzb+1, nzt v(k,j,-1) = interpolate_in_time( nest_offl%v_left(0,k,j), & nest_offl%v_left(1,k,j), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,j,-1), 2 ) ) ENDDO v_ref_l(nzb+1:nzt) = v_ref_l(nzb+1:nzt) + v(nzb+1:nzt,j,-1) ENDDO IF ( .NOT. neutral ) THEN DO j = nys, nyn DO k = nzb+1, nzt pt(k,j,-1) = interpolate_in_time( nest_offl%pt_left(0,k,j), & nest_offl%pt_left(1,k,j), & fac_dt ) ENDDO pt_ref_l(nzb+1:nzt) = pt_ref_l(nzb+1:nzt) + pt(nzb+1:nzt,j,-1) ENDDO ENDIF IF ( humidity ) THEN DO j = nys, nyn DO k = nzb+1, nzt q(k,j,-1) = interpolate_in_time( nest_offl%q_left(0,k,j), & nest_offl%q_left(1,k,j), & fac_dt ) ENDDO q_ref_l(nzb+1:nzt) = q_ref_l(nzb+1:nzt) + q(nzb+1:nzt,j,-1) ENDDO ENDIF IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND( chem_species, 1 ) IF ( nest_offl%chem_from_file_l(n) ) THEN DO j = nys, nyn DO k = nzb+1, nzt chem_species(n)%conc(k,j,-1) = interpolate_in_time( & nest_offl%chem_left(0,k,j,n),& nest_offl%chem_left(1,k,j,n),& fac_dt ) ENDDO ref_chem_l(nzb+1:nzt,n) = ref_chem_l(nzb+1:nzt,n) & + chem_species(n)%conc(nzb+1:nzt,j,-1) ENDDO ENDIF ENDDO ENDIF ENDIF IF ( bc_dirichlet_r ) THEN DO j = nys, nyn DO k = nzb+1, nzt u(k,j,nxr+1) = interpolate_in_time( nest_offl%u_right(0,k,j), & nest_offl%u_right(1,k,j), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,j,nxr+1), 1 ) ) ENDDO u_ref_l(nzb+1:nzt) = u_ref_l(nzb+1:nzt) + u(nzb+1:nzt,j,nxr+1) ENDDO DO j = nys, nyn DO k = nzb+1, nzt-1 w(k,j,nxr+1) = interpolate_in_time( nest_offl%w_right(0,k,j), & nest_offl%w_right(1,k,j), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,j,nxr+1), 3 ) ) ENDDO w(nzt,j,nxr+1) = w(nzt-1,j,nxr+1) ENDDO DO j = nysv, nyn DO k = nzb+1, nzt v(k,j,nxr+1) = interpolate_in_time( nest_offl%v_right(0,k,j), & nest_offl%v_right(1,k,j), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,j,nxr+1), 2 ) ) ENDDO v_ref_l(nzb+1:nzt) = v_ref_l(nzb+1:nzt) + v(nzb+1:nzt,j,nxr+1) ENDDO IF ( .NOT. neutral ) THEN DO j = nys, nyn DO k = nzb+1, nzt pt(k,j,nxr+1) = interpolate_in_time( & nest_offl%pt_right(0,k,j), & nest_offl%pt_right(1,k,j), & fac_dt ) ENDDO pt_ref_l(nzb+1:nzt) = pt_ref_l(nzb+1:nzt) + pt(nzb+1:nzt,j,nxr+1) ENDDO ENDIF IF ( humidity ) THEN DO j = nys, nyn DO k = nzb+1, nzt q(k,j,nxr+1) = interpolate_in_time( & nest_offl%q_right(0,k,j), & nest_offl%q_right(1,k,j), & fac_dt ) ENDDO q_ref_l(nzb+1:nzt) = q_ref_l(nzb+1:nzt) + q(nzb+1:nzt,j,nxr+1) ENDDO ENDIF IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND( chem_species, 1 ) IF ( nest_offl%chem_from_file_r(n) ) THEN DO j = nys, nyn DO k = nzb+1, nzt chem_species(n)%conc(k,j,nxr+1) = interpolate_in_time(& nest_offl%chem_right(0,k,j,n),& nest_offl%chem_right(1,k,j,n),& fac_dt ) ENDDO ref_chem_l(nzb+1:nzt,n) = ref_chem_l(nzb+1:nzt,n) & + chem_species(n)%conc(nzb+1:nzt,j,nxr+1) ENDDO ENDIF ENDDO ENDIF ENDIF IF ( bc_dirichlet_s ) THEN DO i = nxl, nxr DO k = nzb+1, nzt v(k,0,i) = interpolate_in_time( nest_offl%v_south(0,k,i), & nest_offl%v_south(1,k,i), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,0,i), 2 ) ) v(k,-1,i) = v(k,0,i) ENDDO v_ref_l(nzb+1:nzt) = v_ref_l(nzb+1:nzt) + v(nzb+1:nzt,0,i) ENDDO DO i = nxl, nxr DO k = nzb+1, nzt-1 w(k,-1,i) = interpolate_in_time( nest_offl%w_south(0,k,i), & nest_offl%w_south(1,k,i), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,-1,i), 3 ) ) ENDDO w(nzt,-1,i) = w(nzt-1,-1,i) ENDDO DO i = nxlu, nxr DO k = nzb+1, nzt u(k,-1,i) = interpolate_in_time( nest_offl%u_south(0,k,i), & nest_offl%u_south(1,k,i), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,-1,i), 1 ) ) ENDDO u_ref_l(nzb+1:nzt) = u_ref_l(nzb+1:nzt) + u(nzb+1:nzt,-1,i) ENDDO IF ( .NOT. neutral ) THEN DO i = nxl, nxr DO k = nzb+1, nzt pt(k,-1,i) = interpolate_in_time( & nest_offl%pt_south(0,k,i), & nest_offl%pt_south(1,k,i), & fac_dt ) ENDDO pt_ref_l(nzb+1:nzt) = pt_ref_l(nzb+1:nzt) + pt(nzb+1:nzt,-1,i) ENDDO ENDIF IF ( humidity ) THEN DO i = nxl, nxr DO k = nzb+1, nzt q(k,-1,i) = interpolate_in_time( & nest_offl%q_south(0,k,i), & nest_offl%q_south(1,k,i), & fac_dt ) ENDDO q_ref_l(nzb+1:nzt) = q_ref_l(nzb+1:nzt) + q(nzb+1:nzt,-1,i) ENDDO ENDIF IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND( chem_species, 1 ) IF ( nest_offl%chem_from_file_s(n) ) THEN DO i = nxl, nxr DO k = nzb+1, nzt chem_species(n)%conc(k,-1,i) = interpolate_in_time( & nest_offl%chem_south(0,k,i,n),& nest_offl%chem_south(1,k,i,n),& fac_dt ) ENDDO ref_chem_l(nzb+1:nzt,n) = ref_chem_l(nzb+1:nzt,n) & + chem_species(n)%conc(nzb+1:nzt,-1,i) ENDDO ENDIF ENDDO ENDIF ENDIF IF ( bc_dirichlet_n ) THEN DO i = nxl, nxr DO k = nzb+1, nzt v(k,nyn+1,i) = interpolate_in_time( nest_offl%v_north(0,k,i), & nest_offl%v_north(1,k,i), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,nyn+1,i), 2 ) ) ENDDO v_ref_l(nzb+1:nzt) = v_ref_l(nzb+1:nzt) + v(nzb+1:nzt,nyn+1,i) ENDDO DO i = nxl, nxr DO k = nzb+1, nzt-1 w(k,nyn+1,i) = interpolate_in_time( nest_offl%w_north(0,k,i), & nest_offl%w_north(1,k,i), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,nyn+1,i), 3 ) ) ENDDO w(nzt,nyn+1,i) = w(nzt-1,nyn+1,i) ENDDO DO i = nxlu, nxr DO k = nzb+1, nzt u(k,nyn+1,i) = interpolate_in_time( nest_offl%u_north(0,k,i), & nest_offl%u_north(1,k,i), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(k,nyn+1,i), 1 ) ) ENDDO u_ref_l(nzb+1:nzt) = u_ref_l(nzb+1:nzt) + u(nzb+1:nzt,nyn+1,i) ENDDO IF ( .NOT. neutral ) THEN DO i = nxl, nxr DO k = nzb+1, nzt pt(k,nyn+1,i) = interpolate_in_time( & nest_offl%pt_north(0,k,i), & nest_offl%pt_north(1,k,i), & fac_dt ) ENDDO pt_ref_l(nzb+1:nzt) = pt_ref_l(nzb+1:nzt) + pt(nzb+1:nzt,nyn+1,i) ENDDO ENDIF IF ( humidity ) THEN DO i = nxl, nxr DO k = nzb+1, nzt q(k,nyn+1,i) = interpolate_in_time( & nest_offl%q_north(0,k,i), & nest_offl%q_north(1,k,i), & fac_dt ) ENDDO q_ref_l(nzb+1:nzt) = q_ref_l(nzb+1:nzt) + q(nzb+1:nzt,nyn+1,i) ENDDO ENDIF IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND( chem_species, 1 ) IF ( nest_offl%chem_from_file_n(n) ) THEN DO i = nxl, nxr DO k = nzb+1, nzt chem_species(n)%conc(k,nyn+1,i) = interpolate_in_time(& nest_offl%chem_north(0,k,i,n),& nest_offl%chem_north(1,k,i,n),& fac_dt ) ENDDO ref_chem_l(nzb+1:nzt,n) = ref_chem_l(nzb+1:nzt,n) & + chem_species(n)%conc(nzb+1:nzt,nyn+1,i) ENDDO ENDIF ENDDO ENDIF ENDIF ! !-- Top boundary DO i = nxlu, nxr DO j = nys, nyn u(nzt+1,j,i) = interpolate_in_time( nest_offl%u_top(0,j,i), & nest_offl%u_top(1,j,i), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(nzt+1,j,i), 1 ) ) u_ref_l(nzt+1) = u_ref_l(nzt+1) + u(nzt+1,j,i) ENDDO ENDDO ! !-- For left boundary set boundary condition for u-component also at top !-- grid point. !-- Note, this has no effect on the numeric solution, only for data output. IF ( bc_dirichlet_l ) u(nzt+1,:,nxl) = u(nzt+1,:,nxlu) DO i = nxl, nxr DO j = nysv, nyn v(nzt+1,j,i) = interpolate_in_time( nest_offl%v_top(0,j,i), & nest_offl%v_top(1,j,i), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(nzt+1,j,i), 2 ) ) v_ref_l(nzt+1) = v_ref_l(nzt+1) + v(nzt+1,j,i) ENDDO ENDDO ! !-- For south boundary set boundary condition for v-component also at top !-- grid point. !-- Note, this has no effect on the numeric solution, only for data output. IF ( bc_dirichlet_s ) v(nzt+1,nys,:) = v(nzt+1,nysv,:) DO i = nxl, nxr DO j = nys, nyn w(nzt,j,i) = interpolate_in_time( nest_offl%w_top(0,j,i), & nest_offl%w_top(1,j,i), & fac_dt ) * & MERGE( 1.0_wp, 0.0_wp, & BTEST( wall_flags_total_0(nzt,j,i), 3 ) ) w(nzt+1,j,i) = w(nzt,j,i) ENDDO ENDDO IF ( .NOT. neutral ) THEN DO i = nxl, nxr DO j = nys, nyn pt(nzt+1,j,i) = interpolate_in_time( nest_offl%pt_top(0,j,i), & nest_offl%pt_top(1,j,i), & fac_dt ) pt_ref_l(nzt+1) = pt_ref_l(nzt+1) + pt(nzt+1,j,i) ENDDO ENDDO ENDIF IF ( humidity ) THEN DO i = nxl, nxr DO j = nys, nyn q(nzt+1,j,i) = interpolate_in_time( nest_offl%q_top(0,j,i), & nest_offl%q_top(1,j,i), & fac_dt ) q_ref_l(nzt+1) = q_ref_l(nzt+1) + q(nzt+1,j,i) ENDDO ENDDO ENDIF IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND( chem_species, 1 ) IF ( nest_offl%chem_from_file_t(n) ) THEN DO i = nxl, nxr DO j = nys, nyn chem_species(n)%conc(nzt+1,j,i) = interpolate_in_time( & nest_offl%chem_top(0,j,i,n), & nest_offl%chem_top(1,j,i,n), & fac_dt ) ref_chem_l(nzt+1,n) = ref_chem_l(nzt+1,n) + & chem_species(n)%conc(nzt+1,j,i) ENDDO ENDDO ENDIF ENDDO ENDIF ! !-- Moreover, set Neumann boundary condition for subgrid-scale TKE, !-- passive scalar, dissipation, and chemical species if required IF ( rans_mode .AND. rans_tke_e ) THEN IF ( bc_dirichlet_l ) diss(:,:,nxl-1) = diss(:,:,nxl) IF ( bc_dirichlet_r ) diss(:,:,nxr+1) = diss(:,:,nxr) IF ( bc_dirichlet_s ) diss(:,nys-1,:) = diss(:,nys,:) IF ( bc_dirichlet_n ) diss(:,nyn+1,:) = diss(:,nyn,:) ENDIF ! IF ( .NOT. constant_diffusion ) THEN ! IF ( bc_dirichlet_l ) e(:,:,nxl-1) = e(:,:,nxl) ! IF ( bc_dirichlet_r ) e(:,:,nxr+1) = e(:,:,nxr) ! IF ( bc_dirichlet_s ) e(:,nys-1,:) = e(:,nys,:) ! IF ( bc_dirichlet_n ) e(:,nyn+1,:) = e(:,nyn,:) ! e(nzt+1,:,:) = e(nzt,:,:) ! ENDIF ! IF ( passive_scalar ) THEN ! IF ( bc_dirichlet_l ) s(:,:,nxl-1) = s(:,:,nxl) ! IF ( bc_dirichlet_r ) s(:,:,nxr+1) = s(:,:,nxr) ! IF ( bc_dirichlet_s ) s(:,nys-1,:) = s(:,nys,:) ! IF ( bc_dirichlet_n ) s(:,nyn+1,:) = s(:,nyn,:) ! ENDIF CALL exchange_horiz( u, nbgp ) CALL exchange_horiz( v, nbgp ) CALL exchange_horiz( w, nbgp ) IF ( .NOT. neutral ) CALL exchange_horiz( pt, nbgp ) IF ( humidity ) CALL exchange_horiz( q, nbgp ) IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND( chem_species, 1 ) ! !-- Do local exchange only when necessary, i.e. when data is coming !-- from dynamic file. IF ( nest_offl%chem_from_file_t(n) ) & CALL exchange_horiz( chem_species(n)%conc, nbgp ) ENDDO ENDIF ! !-- Set top boundary condition at all horizontal grid points, also at the !-- lateral boundary grid points. w(nzt+1,:,:) = w(nzt,:,:) ! !-- Offline nesting for salsa IF ( salsa ) CALL salsa_nesting_offl_bc ! !-- In case of Rayleigh damping, where the profiles u_init, v_init !-- q_init and pt_init are still used, update these profiles from the !-- averaged boundary data. !-- But first, average these data. #if defined( __parallel ) CALL MPI_ALLREDUCE( u_ref_l, u_ref, nzt+1-nzb+1, MPI_REAL, MPI_SUM, & comm2d, ierr ) CALL MPI_ALLREDUCE( v_ref_l, v_ref, nzt+1-nzb+1, MPI_REAL, MPI_SUM, & comm2d, ierr ) IF ( humidity ) THEN CALL MPI_ALLREDUCE( q_ref_l, q_ref, nzt+1-nzb+1, MPI_REAL, MPI_SUM, & comm2d, ierr ) ENDIF IF ( .NOT. neutral ) THEN CALL MPI_ALLREDUCE( pt_ref_l, pt_ref, nzt+1-nzb+1, MPI_REAL, MPI_SUM,& comm2d, ierr ) ENDIF IF ( air_chemistry .AND. nesting_offline_chem ) THEN CALL MPI_ALLREDUCE( ref_chem_l, ref_chem, & ( nzt+1-nzb+1 ) * SIZE( ref_chem(nzb,:) ), & MPI_REAL, MPI_SUM, comm2d, ierr ) ENDIF #else u_ref = u_ref_l v_ref = v_ref_l IF ( humidity ) q_ref = q_ref_l IF ( .NOT. neutral ) pt_ref = pt_ref_l IF ( air_chemistry .AND. nesting_offline_chem ) ref_chem = ref_chem_l #endif ! !-- Average data. Note, reference profiles up to nzt are derived from lateral !-- boundaries, at the model top it is derived from the top boundary. Thus, !-- number of input data is different from nzb:nzt compared to nzt+1. !-- Derived from lateral boundaries. u_ref(nzb:nzt) = u_ref(nzb:nzt) / REAL( 2.0_wp * ( ny + 1 + nx ), & KIND = wp ) v_ref(nzb:nzt) = v_ref(nzb:nzt) / REAL( 2.0_wp * ( ny + nx + 1 ), & KIND = wp ) IF ( humidity ) & q_ref(nzb:nzt) = q_ref(nzb:nzt) / REAL( 2.0_wp * & ( ny + 1 + nx + 1 ), & KIND = wp ) IF ( .NOT. neutral ) & pt_ref(nzb:nzt) = pt_ref(nzb:nzt) / REAL( 2.0_wp * & ( ny + 1 + nx + 1 ), & KIND = wp ) IF ( air_chemistry .AND. nesting_offline_chem ) & ref_chem(nzb:nzt,:) = ref_chem(nzb:nzt,:) / REAL( 2.0_wp * & ( ny + 1 + nx + 1 ), & KIND = wp ) ! !-- Derived from top boundary. u_ref(nzt+1) = u_ref(nzt+1) / REAL( ( ny + 1 ) * ( nx ), KIND = wp ) v_ref(nzt+1) = v_ref(nzt+1) / REAL( ( ny ) * ( nx + 1 ), KIND = wp ) IF ( humidity ) & q_ref(nzt+1) = q_ref(nzt+1) / REAL( ( ny + 1 ) * ( nx + 1 ), & KIND = wp ) IF ( .NOT. neutral ) & pt_ref(nzt+1) = pt_ref(nzt+1) / REAL( ( ny + 1 ) * ( nx + 1 ), & KIND = wp ) IF ( air_chemistry .AND. nesting_offline_chem ) & ref_chem(nzt+1,:) = ref_chem(nzt+1,:) / & REAL( ( ny + 1 ) * ( nx + 1 ),KIND = wp ) ! !-- Write onto init profiles, which are used for damping. Also set lower !-- boundary condition for scalars (not required for u and v as these are !-- zero at k=nzb. u_init = u_ref v_init = v_ref IF ( humidity ) THEN q_init = q_ref q_init(nzb) = q_init(nzb+1) ENDIF IF ( .NOT. neutral ) THEN pt_init = pt_ref pt_init(nzb) = pt_init(nzb+1) ENDIF IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND( chem_species, 1 ) IF ( nest_offl%chem_from_file_t(n) ) THEN chem_species(n)%conc_pr_init(:) = ref_chem(:,n) chem_species(n)%conc_pr_init(nzb) = & chem_species(n)%conc_pr_init(nzb+1) ENDIF ENDDO ENDIF IF ( ALLOCATED( ref_chem ) ) DEALLOCATE( ref_chem ) IF ( ALLOCATED( ref_chem_l ) ) DEALLOCATE( ref_chem_l ) ! !-- Further, adjust Rayleigh damping height in case of time-changing conditions. !-- Therefore, calculate boundary-layer depth first. CALL nesting_offl_calc_zi CALL adjust_sponge_layer CALL cpu_log( log_point(58), 'offline nesting', 'stop' ) IF ( debug_output_timestep ) CALL debug_message( 'nesting_offl_bc', 'end' ) END SUBROUTINE nesting_offl_bc !------------------------------------------------------------------------------! ! Description: !------------------------------------------------------------------------------! !> Update of the geostrophic wind components. Note, currently this routine is !> not invoked. !------------------------------------------------------------------------------! SUBROUTINE nesting_offl_geostrophic_wind INTEGER(iwp) :: k ! !-- Update geostrophic wind components from dynamic input file. DO k = nzb+1, nzt ug(k) = interpolate_in_time( nest_offl%ug(0,k), nest_offl%ug(1,k), & fac_dt ) vg(k) = interpolate_in_time( nest_offl%vg(0,k), nest_offl%vg(1,k), & fac_dt ) ENDDO ug(nzt+1) = ug(nzt) vg(nzt+1) = vg(nzt) END SUBROUTINE nesting_offl_geostrophic_wind !------------------------------------------------------------------------------! ! Description: !------------------------------------------------------------------------------! !> Determine the interpolation constant for time interpolation. The !> calculation is separated from the nesting_offl_bc and !> nesting_offl_geostrophic_wind in order to be independent on the order !> of calls. !------------------------------------------------------------------------------! SUBROUTINE nesting_offl_interpolation_factor ! !-- Determine interpolation factor and limit it to 1. This is because !-- t+dt can slightly exceed time(tind_p) before boundary data is updated !-- again. fac_dt = ( time_since_reference_point & - nest_offl%time(nest_offl%tind) + dt_3d ) / & ( nest_offl%time(nest_offl%tind_p) - nest_offl%time(nest_offl%tind) ) fac_dt = MIN( 1.0_wp, fac_dt ) END SUBROUTINE nesting_offl_interpolation_factor !------------------------------------------------------------------------------! ! Description: !------------------------------------------------------------------------------! !> Calculates the boundary-layer depth from the boundary data, according to !> bulk-Richardson criterion. !------------------------------------------------------------------------------! SUBROUTINE nesting_offl_calc_zi INTEGER(iwp) :: i !< loop index in x-direction INTEGER(iwp) :: j !< loop index in y-direction INTEGER(iwp) :: k !< loop index in z-direction INTEGER(iwp) :: k_max_loc !< index of maximum wind speed along z-direction INTEGER(iwp) :: k_surface !< topography top index in z-direction INTEGER(iwp) :: num_boundary_gp_non_cyclic !< number of non-cyclic boundaries, used for averaging ABL depth INTEGER(iwp) :: num_boundary_gp_non_cyclic_l !< number of non-cyclic boundaries, used for averaging ABL depth REAL(wp) :: ri_bulk !< bulk Richardson number REAL(wp) :: ri_bulk_crit = 0.25_wp !< critical bulk Richardson number REAL(wp) :: topo_max !< maximum topography level in model domain REAL(wp) :: topo_max_l !< maximum topography level in subdomain REAL(wp) :: vpt_surface !< near-surface virtual potential temperature REAL(wp) :: zi_l !< mean boundary-layer depth on subdomain REAL(wp) :: zi_local !< local boundary-layer depth REAL(wp), DIMENSION(nzb:nzt+1) :: vpt_col !< vertical profile of virtual potential temperature at (j,i)-grid point REAL(wp), DIMENSION(nzb:nzt+1) :: uv_abs !< vertical profile of horizontal wind speed at (j,i)-grid point ! !-- Calculate mean boundary-layer height from boundary data. !-- Start with the left and right boundaries. zi_l = 0.0_wp num_boundary_gp_non_cyclic_l = 0 IF ( bc_dirichlet_l .OR. bc_dirichlet_r ) THEN ! !-- Sum-up and store number of boundary grid points used for averaging !-- ABL depth num_boundary_gp_non_cyclic_l = num_boundary_gp_non_cyclic_l + & nxr - nxl + 1 ! !-- Determine index along x. Please note, index indicates boundary !-- grid point for scalars. i = MERGE( -1, nxr + 1, bc_dirichlet_l ) DO j = nys, nyn ! !-- Determine topography top index at current (j,i) index k_surface = topo_top_ind(j,i,0) ! !-- Pre-compute surface virtual temperature. Therefore, use 2nd !-- prognostic level according to Heinze et al. (2017). IF ( humidity ) THEN vpt_surface = pt(k_surface+2,j,i) * & ( 1.0_wp + 0.61_wp * q(k_surface+2,j,i) ) vpt_col = pt(:,j,i) * ( 1.0_wp + 0.61_wp * q(:,j,i) ) ELSE vpt_surface = pt(k_surface+2,j,i) vpt_col = pt(:,j,i) ENDIF ! !-- Calculate local boundary layer height from bulk Richardson number, !-- i.e. the height where the bulk Richardson number exceeds its !-- critical value of 0.25 (according to Heinze et al., 2017). !-- Note, no interpolation of u- and v-component is made, as both !-- are mainly mean inflow profiles with very small spatial variation. !-- Add a safety factor in case the velocity term becomes zero. This !-- may happen if overhanging 3D structures are directly located at !-- the boundary, where velocity inside the building is zero !-- (k_surface is the index of the lowest upward-facing surface). uv_abs(:) = SQRT( MERGE( u(:,j,i+1), u(:,j,i), & bc_dirichlet_l )**2 + & v(:,j,i)**2 ) ! !-- Determine index of the maximum wind speed k_max_loc = MAXLOC( uv_abs(:), DIM = 1 ) - 1 zi_local = 0.0_wp DO k = k_surface+1, nzt ri_bulk = zu(k) * g / vpt_surface * & ( vpt_col(k) - vpt_surface ) / & ( uv_abs(k) + 1E-5_wp ) ! !-- Check if critical Richardson number is exceeded. Further, check !-- if there is a maxium in the wind profile in order to detect also !-- ABL heights in the stable boundary layer. IF ( zi_local == 0.0_wp .AND. & ( ri_bulk > ri_bulk_crit .OR. k == k_max_loc ) ) & zi_local = zu(k) ENDDO ! !-- Assure that the minimum local boundary-layer depth is at least at !-- the second vertical grid level. zi_l = zi_l + MAX( zi_local, zu(k_surface+2) ) ENDDO ENDIF ! !-- Do the same at the north and south boundaries. IF ( bc_dirichlet_s .OR. bc_dirichlet_n ) THEN num_boundary_gp_non_cyclic_l = num_boundary_gp_non_cyclic_l + & nxr - nxl + 1 j = MERGE( -1, nyn + 1, bc_dirichlet_s ) DO i = nxl, nxr k_surface = topo_top_ind(j,i,0) IF ( humidity ) THEN vpt_surface = pt(k_surface+2,j,i) * & ( 1.0_wp + 0.61_wp * q(k_surface+2,j,i) ) vpt_col = pt(:,j,i) * ( 1.0_wp + 0.61_wp * q(:,j,i) ) ELSE vpt_surface = pt(k_surface+2,j,i) vpt_col = pt(:,j,i) ENDIF uv_abs(:) = SQRT( u(:,j,i)**2 + & MERGE( v(:,j+1,i), v(:,j,i), & bc_dirichlet_s )**2 ) ! !-- Determine index of the maximum wind speed k_max_loc = MAXLOC( uv_abs(:), DIM = 1 ) - 1 zi_local = 0.0_wp DO k = k_surface+1, nzt ri_bulk = zu(k) * g / vpt_surface * & ( vpt_col(k) - vpt_surface ) / & ( uv_abs(k) + 1E-5_wp ) ! !-- Check if critical Richardson number is exceeded. Further, check !-- if there is a maxium in the wind profile in order to detect also !-- ABL heights in the stable boundary layer. IF ( zi_local == 0.0_wp .AND. & ( ri_bulk > ri_bulk_crit .OR. k == k_max_loc ) ) & zi_local = zu(k) ENDDO zi_l = zi_l + MAX( zi_local, zu(k_surface+2) ) ENDDO ENDIF #if defined( __parallel ) CALL MPI_ALLREDUCE( zi_l, zi_ribulk, 1, MPI_REAL, MPI_SUM, & comm2d, ierr ) CALL MPI_ALLREDUCE( num_boundary_gp_non_cyclic_l, & num_boundary_gp_non_cyclic, & 1, MPI_INTEGER, MPI_SUM, comm2d, ierr ) #else zi_ribulk = zi_l num_boundary_gp_non_cyclic = num_boundary_gp_non_cyclic_l #endif zi_ribulk = zi_ribulk / REAL( num_boundary_gp_non_cyclic, KIND = wp ) ! !-- Finally, check if boundary layer depth is not below the any topography. !-- zi_ribulk will be used to adjust rayleigh damping height, i.e. the !-- lower level of the sponge layer, as well as to adjust the synthetic !-- turbulence generator accordingly. If Rayleigh damping would be applied !-- near buildings, etc., this would spoil the simulation results. topo_max_l = zw(MAXVAL( topo_top_ind(nys:nyn,nxl:nxr,0) )) #if defined( __parallel ) CALL MPI_ALLREDUCE( topo_max_l, topo_max, 1, MPI_REAL, MPI_MAX, & comm2d, ierr ) #else topo_max = topo_max_l #endif ! zi_ribulk = MAX( zi_ribulk, topo_max ) END SUBROUTINE nesting_offl_calc_zi !------------------------------------------------------------------------------! ! Description: !------------------------------------------------------------------------------! !> Adjust the height where the rayleigh damping starts, i.e. the lower level !> of the sponge layer. !------------------------------------------------------------------------------! SUBROUTINE adjust_sponge_layer INTEGER(iwp) :: k !< loop index in z-direction REAL(wp) :: rdh !< updated Rayleigh damping height IF ( rayleigh_damping_height > 0.0_wp .AND. & rayleigh_damping_factor > 0.0_wp ) THEN ! !-- Update Rayleigh-damping height and re-calculate height-depending !-- damping coefficients. !-- Assure that rayleigh damping starts well above the boundary layer. rdh = MIN( MAX( zi_ribulk * 1.3_wp, 10.0_wp * dz(1) ), & 0.8_wp * zu(nzt), rayleigh_damping_height ) ! !-- Update Rayleigh damping factor DO k = nzb+1, nzt IF ( zu(k) >= rdh ) THEN rdf(k) = rayleigh_damping_factor * & ( SIN( pi * 0.5_wp * ( zu(k) - rdh ) & / ( zu(nzt) - rdh ) ) & )**2 ENDIF ENDDO rdf_sc = rdf ENDIF END SUBROUTINE adjust_sponge_layer !------------------------------------------------------------------------------! ! Description: ! ------------ !> Performs consistency checks !------------------------------------------------------------------------------! SUBROUTINE nesting_offl_check_parameters ! !-- Check if offline nesting is applied in nested child domain. IF ( nesting_offline .AND. child_domain ) THEN message_string = 'Offline nesting is only applicable in root model.' CALL message( 'offline_nesting_check_parameters', 'PA0622', 1, 2, 0, 6, 0 ) ENDIF END SUBROUTINE nesting_offl_check_parameters !------------------------------------------------------------------------------! ! Description: ! ------------ !> Reads the parameter list nesting_offl_parameters !------------------------------------------------------------------------------! SUBROUTINE nesting_offl_parin CHARACTER (LEN=80) :: line !< dummy string that contains the current line of the parameter file NAMELIST /nesting_offl_parameters/ nesting_offline line = ' ' ! !-- Try to find stg package REWIND ( 11 ) line = ' ' DO WHILE ( INDEX( line, '&nesting_offl_parameters' ) == 0 ) READ ( 11, '(A)', END=20 ) line ENDDO BACKSPACE ( 11 ) ! !-- Read namelist READ ( 11, nesting_offl_parameters, ERR = 10, END = 20 ) GOTO 20 10 BACKSPACE( 11 ) READ( 11 , '(A)') line CALL parin_fail_message( 'nesting_offl_parameters', line ) 20 CONTINUE END SUBROUTINE nesting_offl_parin !------------------------------------------------------------------------------! ! Description: ! ------------ !> Writes information about offline nesting into HEADER file !------------------------------------------------------------------------------! SUBROUTINE nesting_offl_header ( io ) INTEGER(iwp), INTENT(IN) :: io !< Unit of the output file WRITE ( io, 1 ) IF ( nesting_offline ) THEN WRITE ( io, 3 ) ELSE WRITE ( io, 2 ) ENDIF 1 FORMAT (//' Offline nesting in COSMO model:'/ & ' -------------------------------'/) 2 FORMAT (' --> No offlince nesting is used (default) ') 3 FORMAT (' --> Offlince nesting is used. Boundary data is read from dynamic input file ') END SUBROUTINE nesting_offl_header !------------------------------------------------------------------------------! ! Description: ! ------------ !> Allocate arrays used to read boundary data from NetCDF file and initialize !> boundary data. !------------------------------------------------------------------------------! SUBROUTINE nesting_offl_init INTEGER(iwp) :: n !< running index for chemical species !-- Allocate arrays for geostrophic wind components. Arrays will !-- incorporate 2 time levels in order to interpolate in between. ALLOCATE( nest_offl%ug(0:1,1:nzt) ) ALLOCATE( nest_offl%vg(0:1,1:nzt) ) ! !-- Allocate arrays for reading left/right boundary values. Arrays will !-- incorporate 2 time levels in order to interpolate in between. If the core has !-- no boundary, allocate a dummy array, in order to enable netcdf parallel !-- access. Dummy arrays will be allocated with dimension length zero. IF ( bc_dirichlet_l ) THEN ALLOCATE( nest_offl%u_left(0:1,nzb+1:nzt,nys:nyn) ) ALLOCATE( nest_offl%v_left(0:1,nzb+1:nzt,nysv:nyn) ) ALLOCATE( nest_offl%w_left(0:1,nzb+1:nzt-1,nys:nyn) ) IF ( humidity ) ALLOCATE( nest_offl%q_left(0:1,nzb+1:nzt,nys:nyn) ) IF ( .NOT. neutral ) ALLOCATE( nest_offl%pt_left(0:1,nzb+1:nzt,nys:nyn) ) IF ( air_chemistry .AND. nesting_offline_chem ) & ALLOCATE( nest_offl%chem_left(0:1,nzb+1:nzt,nys:nyn,1:UBOUND( chem_species, 1 )) ) ELSE ALLOCATE( nest_offl%u_left(1:1,1:1,1:1) ) ALLOCATE( nest_offl%v_left(1:1,1:1,1:1) ) ALLOCATE( nest_offl%w_left(1:1,1:1,1:1) ) IF ( humidity ) ALLOCATE( nest_offl%q_left(1:1,1:1,1:1) ) IF ( .NOT. neutral ) ALLOCATE( nest_offl%pt_left(1:1,1:1,1:1) ) IF ( air_chemistry .AND. nesting_offline_chem ) & ALLOCATE( nest_offl%chem_left(1:1,1:1,1:1,1:UBOUND( chem_species, 1 )) ) ENDIF IF ( bc_dirichlet_r ) THEN ALLOCATE( nest_offl%u_right(0:1,nzb+1:nzt,nys:nyn) ) ALLOCATE( nest_offl%v_right(0:1,nzb+1:nzt,nysv:nyn) ) ALLOCATE( nest_offl%w_right(0:1,nzb+1:nzt-1,nys:nyn) ) IF ( humidity ) ALLOCATE( nest_offl%q_right(0:1,nzb+1:nzt,nys:nyn) ) IF ( .NOT. neutral ) ALLOCATE( nest_offl%pt_right(0:1,nzb+1:nzt,nys:nyn) ) IF ( air_chemistry .AND. nesting_offline_chem ) & ALLOCATE( nest_offl%chem_right(0:1,nzb+1:nzt,nys:nyn,1:UBOUND( chem_species, 1 )) ) ELSE ALLOCATE( nest_offl%u_right(1:1,1:1,1:1) ) ALLOCATE( nest_offl%v_right(1:1,1:1,1:1) ) ALLOCATE( nest_offl%w_right(1:1,1:1,1:1) ) IF ( humidity ) ALLOCATE( nest_offl%q_right(1:1,1:1,1:1) ) IF ( .NOT. neutral ) ALLOCATE( nest_offl%pt_right(1:1,1:1,1:1) ) IF ( air_chemistry .AND. nesting_offline_chem ) & ALLOCATE( nest_offl%chem_right(1:1,1:1,1:1,1:UBOUND( chem_species, 1 )) ) ENDIF ! !-- Allocate arrays for reading north/south boundary values. Arrays will !-- incorporate 2 time levels in order to interpolate in between. If the core has !-- no boundary, allocate a dummy array, in order to enable netcdf parallel !-- access. Dummy arrays will be allocated with dimension length zero. IF ( bc_dirichlet_n ) THEN ALLOCATE( nest_offl%u_north(0:1,nzb+1:nzt,nxlu:nxr) ) ALLOCATE( nest_offl%v_north(0:1,nzb+1:nzt,nxl:nxr) ) ALLOCATE( nest_offl%w_north(0:1,nzb+1:nzt-1,nxl:nxr) ) IF ( humidity ) ALLOCATE( nest_offl%q_north(0:1,nzb+1:nzt,nxl:nxr) ) IF ( .NOT. neutral ) ALLOCATE( nest_offl%pt_north(0:1,nzb+1:nzt,nxl:nxr) ) IF ( air_chemistry .AND. nesting_offline_chem ) & ALLOCATE( nest_offl%chem_north(0:1,nzb+1:nzt,nxl:nxr,1:UBOUND( chem_species, 1 )) ) ELSE ALLOCATE( nest_offl%u_north(1:1,1:1,1:1) ) ALLOCATE( nest_offl%v_north(1:1,1:1,1:1) ) ALLOCATE( nest_offl%w_north(1:1,1:1,1:1) ) IF ( humidity ) ALLOCATE( nest_offl%q_north(1:1,1:1,1:1) ) IF ( .NOT. neutral ) ALLOCATE( nest_offl%pt_north(1:1,1:1,1:1) ) IF ( air_chemistry .AND. nesting_offline_chem ) & ALLOCATE( nest_offl%chem_north(1:1,1:1,1:1,1:UBOUND( chem_species, 1 )) ) ENDIF IF ( bc_dirichlet_s ) THEN ALLOCATE( nest_offl%u_south(0:1,nzb+1:nzt,nxlu:nxr) ) ALLOCATE( nest_offl%v_south(0:1,nzb+1:nzt,nxl:nxr) ) ALLOCATE( nest_offl%w_south(0:1,nzb+1:nzt-1,nxl:nxr) ) IF ( humidity ) ALLOCATE( nest_offl%q_south(0:1,nzb+1:nzt,nxl:nxr) ) IF ( .NOT. neutral ) ALLOCATE( nest_offl%pt_south(0:1,nzb+1:nzt,nxl:nxr) ) IF ( air_chemistry .AND. nesting_offline_chem ) & ALLOCATE( nest_offl%chem_south(0:1,nzb+1:nzt,nxl:nxr,1:UBOUND( chem_species, 1 )) ) ELSE ALLOCATE( nest_offl%u_south(1:1,1:1,1:1) ) ALLOCATE( nest_offl%v_south(1:1,1:1,1:1) ) ALLOCATE( nest_offl%w_south(1:1,1:1,1:1) ) IF ( humidity ) ALLOCATE( nest_offl%q_south(1:1,1:1,1:1) ) IF ( .NOT. neutral ) ALLOCATE( nest_offl%pt_south(1:1,1:1,1:1) ) IF ( air_chemistry .AND. nesting_offline_chem ) & ALLOCATE( nest_offl%chem_south(1:1,1:1,1:1,1:UBOUND( chem_species, 1 )) ) ENDIF ! !-- Allocate arrays for reading data at the top boundary. In contrast to the !-- lateral boundaries, every core reads these data so that no dummy !-- arrays need to be allocated. ALLOCATE( nest_offl%u_top(0:1,nys:nyn,nxlu:nxr) ) ALLOCATE( nest_offl%v_top(0:1,nysv:nyn,nxl:nxr) ) ALLOCATE( nest_offl%w_top(0:1,nys:nyn,nxl:nxr) ) IF ( humidity ) ALLOCATE( nest_offl%q_top(0:1,nys:nyn,nxl:nxr) ) IF ( .NOT. neutral ) ALLOCATE( nest_offl%pt_top(0:1,nys:nyn,nxl:nxr) ) IF ( air_chemistry .AND. nesting_offline_chem ) & ALLOCATE( nest_offl%chem_top(0:1,nys:nyn,nxl:nxr,1:UBOUND( chem_species, 1 )) ) ! !-- For chemical species, create the names of the variables. This is necessary !-- to identify the respective variable and write it onto the correct array !-- in the chem_species datatype. IF ( air_chemistry .AND. nesting_offline_chem ) THEN ALLOCATE( nest_offl%chem_from_file_l(1:UBOUND( chem_species, 1 )) ) ALLOCATE( nest_offl%chem_from_file_n(1:UBOUND( chem_species, 1 )) ) ALLOCATE( nest_offl%chem_from_file_r(1:UBOUND( chem_species, 1 )) ) ALLOCATE( nest_offl%chem_from_file_s(1:UBOUND( chem_species, 1 )) ) ALLOCATE( nest_offl%chem_from_file_t(1:UBOUND( chem_species, 1 )) ) ALLOCATE( nest_offl%var_names_chem_l(1:UBOUND( chem_species, 1 )) ) ALLOCATE( nest_offl%var_names_chem_n(1:UBOUND( chem_species, 1 )) ) ALLOCATE( nest_offl%var_names_chem_r(1:UBOUND( chem_species, 1 )) ) ALLOCATE( nest_offl%var_names_chem_s(1:UBOUND( chem_species, 1 )) ) ALLOCATE( nest_offl%var_names_chem_t(1:UBOUND( chem_species, 1 )) ) ! !-- Initialize flags that indicate whether the variable is on file or !-- not. Please note, this is only necessary for chemistry variables. nest_offl%chem_from_file_l(:) = .FALSE. nest_offl%chem_from_file_n(:) = .FALSE. nest_offl%chem_from_file_r(:) = .FALSE. nest_offl%chem_from_file_s(:) = .FALSE. nest_offl%chem_from_file_t(:) = .FALSE. DO n = 1, UBOUND( chem_species, 1 ) nest_offl%var_names_chem_l(n) = nest_offl%char_l // & TRIM(chem_species(n)%name) nest_offl%var_names_chem_n(n) = nest_offl%char_n // & TRIM(chem_species(n)%name) nest_offl%var_names_chem_r(n) = nest_offl%char_r // & TRIM(chem_species(n)%name) nest_offl%var_names_chem_s(n) = nest_offl%char_s // & TRIM(chem_species(n)%name) nest_offl%var_names_chem_t(n) = nest_offl%char_t // & TRIM(chem_species(n)%name) ENDDO ENDIF ! !-- Offline nesting for salsa IF ( salsa ) CALL salsa_nesting_offl_init ! !-- Before initial data input is initiated, check if dynamic input file is !-- present. IF ( .NOT. input_pids_dynamic ) THEN message_string = 'nesting_offline = .TRUE. requires dynamic ' // & 'input file ' // & TRIM( input_file_dynamic ) // TRIM( coupling_char ) CALL message( 'nesting_offl_init', 'PA0546', 1, 2, 0, 6, 0 ) ENDIF ! !-- Read COSMO data at lateral and top boundaries CALL nesting_offl_input ! !-- Check if sufficient time steps are provided to cover the entire !-- simulation. Note, dynamic input is only required for the 3D simulation, !-- not for the soil/wall spinup. However, as the spinup time is added !-- to the end_time, this must be considered here. IF ( end_time - spinup_time > nest_offl%time(nest_offl%nt-1) ) THEN message_string = 'end_time of the simulation exceeds the ' // & 'time dimension in the dynamic input file.' CALL message( 'nesting_offl_init', 'PA0183', 1, 2, 0, 6, 0 ) ENDIF ! !-- Initialize boundary data. Please note, do not initialize boundaries in !-- case of restart runs. This case the boundaries are already initialized !-- and the boundary data from file would be on the wrong time level. IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN IF ( bc_dirichlet_l ) THEN u(nzb+1:nzt,nys:nyn,0) = nest_offl%u_left(0,nzb+1:nzt,nys:nyn) v(nzb+1:nzt,nysv:nyn,-1) = nest_offl%v_left(0,nzb+1:nzt,nysv:nyn) w(nzb+1:nzt-1,nys:nyn,-1) = nest_offl%w_left(0,nzb+1:nzt-1,nys:nyn) IF ( .NOT. neutral ) pt(nzb+1:nzt,nys:nyn,-1) = & nest_offl%pt_left(0,nzb+1:nzt,nys:nyn) IF ( humidity ) q(nzb+1:nzt,nys:nyn,-1) = & nest_offl%q_left(0,nzb+1:nzt,nys:nyn) IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND( chem_species, 1 ) IF( nest_offl%chem_from_file_l(n) ) THEN chem_species(n)%conc(nzb+1:nzt,nys:nyn,-1) = & nest_offl%chem_left(0,nzb+1:nzt,nys:nyn,n) ENDIF ENDDO ENDIF ENDIF IF ( bc_dirichlet_r ) THEN u(nzb+1:nzt,nys:nyn,nxr+1) = nest_offl%u_right(0,nzb+1:nzt,nys:nyn) v(nzb+1:nzt,nysv:nyn,nxr+1) = nest_offl%v_right(0,nzb+1:nzt,nysv:nyn) w(nzb+1:nzt-1,nys:nyn,nxr+1) = nest_offl%w_right(0,nzb+1:nzt-1,nys:nyn) IF ( .NOT. neutral ) pt(nzb+1:nzt,nys:nyn,nxr+1) = & nest_offl%pt_right(0,nzb+1:nzt,nys:nyn) IF ( humidity ) q(nzb+1:nzt,nys:nyn,nxr+1) = & nest_offl%q_right(0,nzb+1:nzt,nys:nyn) IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND( chem_species, 1 ) IF( nest_offl%chem_from_file_r(n) ) THEN chem_species(n)%conc(nzb+1:nzt,nys:nyn,nxr+1) = & nest_offl%chem_right(0,nzb+1:nzt,nys:nyn,n) ENDIF ENDDO ENDIF ENDIF IF ( bc_dirichlet_s ) THEN u(nzb+1:nzt,-1,nxlu:nxr) = nest_offl%u_south(0,nzb+1:nzt,nxlu:nxr) v(nzb+1:nzt,0,nxl:nxr) = nest_offl%v_south(0,nzb+1:nzt,nxl:nxr) w(nzb+1:nzt-1,-1,nxl:nxr) = nest_offl%w_south(0,nzb+1:nzt-1,nxl:nxr) IF ( .NOT. neutral ) pt(nzb+1:nzt,-1,nxl:nxr) = & nest_offl%pt_south(0,nzb+1:nzt,nxl:nxr) IF ( humidity ) q(nzb+1:nzt,-1,nxl:nxr) = & nest_offl%q_south(0,nzb+1:nzt,nxl:nxr) IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND( chem_species, 1 ) IF( nest_offl%chem_from_file_s(n) ) THEN chem_species(n)%conc(nzb+1:nzt,-1,nxl:nxr) = & nest_offl%chem_south(0,nzb+1:nzt,nxl:nxr,n) ENDIF ENDDO ENDIF ENDIF IF ( bc_dirichlet_n ) THEN u(nzb+1:nzt,nyn+1,nxlu:nxr) = nest_offl%u_north(0,nzb+1:nzt,nxlu:nxr) v(nzb+1:nzt,nyn+1,nxl:nxr) = nest_offl%v_north(0,nzb+1:nzt,nxl:nxr) w(nzb+1:nzt-1,nyn+1,nxl:nxr) = nest_offl%w_north(0,nzb+1:nzt-1,nxl:nxr) IF ( .NOT. neutral ) pt(nzb+1:nzt,nyn+1,nxl:nxr) = & nest_offl%pt_north(0,nzb+1:nzt,nxl:nxr) IF ( humidity ) q(nzb+1:nzt,nyn+1,nxl:nxr) = & nest_offl%q_north(0,nzb+1:nzt,nxl:nxr) IF ( air_chemistry .AND. nesting_offline_chem ) THEN DO n = 1, UBOUND( chem_species, 1 ) IF( nest_offl%chem_from_file_n(n) ) THEN chem_species(n)%conc(nzb+1:nzt,nyn+1,nxl:nxr) = & nest_offl%chem_north(0,nzb+1:nzt,nxl:nxr,n) ENDIF ENDDO ENDIF ENDIF ! !-- In case of offline nesting the pressure forms itself based on the prescribed lateral !-- boundary conditions. Hence, explicit forcing by pressure gradients via geostrophic !-- wind components is not necessary and would be canceled out by the perturbation !-- pressure otherwise. For this reason, set geostrophic wind components to zero. ug(nzb+1:nzt) = 0.0_wp vg(nzb+1:nzt) = 0.0_wp ENDIF ! !-- After boundary data is initialized, mask topography at the !-- boundaries for the velocity components. u = MERGE( u, 0.0_wp, BTEST( wall_flags_total_0, 1 ) ) v = MERGE( v, 0.0_wp, BTEST( wall_flags_total_0, 2 ) ) w = MERGE( w, 0.0_wp, BTEST( wall_flags_total_0, 3 ) ) ! !-- Initial calculation of the boundary layer depth from the prescribed !-- boundary data. This is requiered for initialize the synthetic turbulence !-- generator correctly. CALL nesting_offl_calc_zi ! !-- After boundary data is initialized, ensure mass conservation. Not !-- necessary in restart runs. IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN CALL nesting_offl_mass_conservation ENDIF END SUBROUTINE nesting_offl_init !------------------------------------------------------------------------------! ! Description: !------------------------------------------------------------------------------! !> Interpolation function, used to interpolate boundary data in time. !------------------------------------------------------------------------------! FUNCTION interpolate_in_time( var_t1, var_t2, fac ) REAL(wp) :: interpolate_in_time !< time-interpolated boundary value REAL(wp) :: var_t1 !< boundary value at t1 REAL(wp) :: var_t2 !< boundary value at t2 REAL(wp) :: fac !< interpolation factor interpolate_in_time = ( 1.0_wp - fac ) * var_t1 + fac * var_t2 END FUNCTION interpolate_in_time END MODULE nesting_offl_mod