!> @file user_init_plant_canopy.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 1997-2019 Leibniz Universitaet Hannover !------------------------------------------------------------------------------! ! ! Current revisions: ! ----------------- ! ! ! Former revisions: ! ----------------- ! $Id: user_init_plant_canopy.f90 4182 2019-08-22 15:20:23Z suehring $ ! Corrected "Former revisions" section ! ! 3768 2019-02-27 14:35:58Z raasch ! unused variables commented out to avoid compiler warnings ! ! 3655 2019-01-07 16:51:22Z knoop ! Corrected "Former revisions" section ! ! 211 2008-11-11 04:46:24Z raasch ! Former file user_interface.f90 split into one file per subroutine ! ! Description: ! ------------ !> Initialisation of the leaf area density array (for scalar grid points) and !> the array of the canopy drag coefficient, if the user has not chosen any !> of the default cases !------------------------------------------------------------------------------! SUBROUTINE user_init_plant_canopy USE arrays_3d USE control_parameters USE indices USE kinds USE plant_canopy_model_mod USE user IMPLICIT NONE ! INTEGER(iwp) :: i !< running index ! INTEGER(iwp) :: j !< running index ! !-- Here the user-defined grid initializing actions follow: ! !-- Set the 3D-array lad_s for user defined canopies SELECT CASE ( TRIM( canopy_mode ) ) CASE ( 'block' ) ! !-- Not allowed here since this is the standard case used in init_3d_model. CASE ( 'user_defined_canopy_1' ) ! !-- Here the user can define his own forest topography. !-- The following lines contain an example, where the plant canopy extends !-- only over the second half of the model domain along x. !-- Attention: DO-loops have to include the ghost points (nxlg-nxrg, !-- nysg-nyng), because no exchange of ghost point information is intended, !-- in order to minimize communication between CPUs. ! DO i = nxlg, nxrg ! IF ( i >= INT( ( nx+1 ) / 2 ) ) THEN ! DO j = nysg, nyng ! lad_s(:,j,i) = lad(:) ! ENDDO ! ELSE ! lad_s(:,:,i) = 0.0_wp ! ENDIF ! ENDDO ! !-- After definition, please !-- remove the following three lines! message_string = 'canopy_mode "' // canopy_mode // & '" not available yet' CALL message( 'user_init_plant_canopy', 'UI0007', 0, 1, 0, 6, 0 ) CASE DEFAULT ! !-- The DEFAULT case is reached if the parameter canopy_mode contains a !-- wrong character string that is neither recognized in init_3d_model nor !-- here in user_init_plant_canopy. message_string = 'unknown canopy_mode "' // canopy_mode // '"' CALL message( 'user_init_plant_canopy', 'UI0008', 1, 2, 0, 6, 0 ) END SELECT END SUBROUTINE user_init_plant_canopy