MODULE buoyancy_mod !--------------------------------------------------------------------------------! ! 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 . ! ! Copyright 1997-2012 Leibniz University Hannover !--------------------------------------------------------------------------------! ! ! Currrent revisions: ! ------------------ ! ! ! Former revisions: ! ----------------- ! $Id: buoyancy.f90 1182 2013-06-14 09:07:24Z kanani $ ! ! 1179 2013-06-14 05:57:58Z raasch ! steering of reference state revised (var_reference and pr removed from ! parameter list), use_reference renamed use_single_reference_value ! ! 1171 2013-05-30 11:27:45Z raasch ! openacc statements added to use_reference-case in accelerator version ! ! 1153 2013-05-10 14:33:08Z raasch ! code adjustments of accelerator version required by PGI 12.3 / CUDA 5.0 ! ! 1128 2013-04-12 06:19:32Z raasch ! loop index bounds in accelerator version replaced by i_left, i_right, j_south, ! j_north ! ! 1036 2012-10-22 13:43:42Z raasch ! code put under GPL (PALM 3.9) ! ! 1015 2012-09-27 09:23:24Z raasch ! accelerator version (*_acc) added ! ! 1010 2012-09-20 07:59:54Z raasch ! cpp switch __nopointer added for pointer free version ! ! 622 2010-12-10 08:08:13Z raasch ! optional barriers included in order to speed up collective operations ! ! 515 2010-03-18 02:30:38Z raasch ! PGI-compiler creates SIGFPE in routine buoyancy, if opt>1 is used! Therefore, ! opt=1 is forced by compiler-directive. ! ! 247 2009-02-27 14:01:30Z heinze ! Output of messages replaced by message handling routine ! ! 132 2007-11-20 09:46:11Z letzel ! Vertical scalar profiles now based on nzb_s_inner and ngp_2dh_s_inner. ! ! 106 2007-08-16 14:30:26Z raasch ! i loop for u-component (sloping surface) is starting from nxlu (needed for ! non-cyclic boundary conditions) ! ! 97 2007-06-21 08:23:15Z raasch ! Routine reneralized to be used with temperature AND density: ! argument theta renamed var, new argument var_reference, ! use_pt_reference renamed use_reference, ! calc_mean_pt_profile renamed calc_mean_profile ! ! 57 2007-03-09 12:05:41Z raasch ! Reference temperature pt_reference can be used. ! ! RCS Log replace by Id keyword, revision history cleaned up ! ! Revision 1.19 2006/04/26 12:09:56 raasch ! OpenMP optimization (one dimension added to sums_l) ! ! Revision 1.1 1997/08/29 08:56:48 raasch ! Initial revision ! ! ! Description: ! ------------ ! Buoyancy term of the third component of the equation of motion. ! WARNING: humidity is not regarded when using a sloping surface! !------------------------------------------------------------------------------! PRIVATE PUBLIC buoyancy, buoyancy_acc, calc_mean_profile INTERFACE buoyancy MODULE PROCEDURE buoyancy MODULE PROCEDURE buoyancy_ij END INTERFACE buoyancy INTERFACE buoyancy_acc MODULE PROCEDURE buoyancy_acc END INTERFACE buoyancy_acc INTERFACE calc_mean_profile MODULE PROCEDURE calc_mean_profile END INTERFACE calc_mean_profile CONTAINS !------------------------------------------------------------------------------! ! Call for all grid points !------------------------------------------------------------------------------! SUBROUTINE buoyancy( var, wind_component ) USE arrays_3d USE control_parameters USE indices USE pegrid IMPLICIT NONE INTEGER :: i, j, k, wind_component #if defined( __nopointer ) REAL, DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var #else REAL, DIMENSION(:,:,:), POINTER :: var #endif IF ( .NOT. sloping_surface ) THEN ! !-- Normal case: horizontal surface DO i = nxl, nxr DO j = nys, nyn DO k = nzb_s_inner(j,i)+1, nzt-1 tend(k,j,i) = tend(k,j,i) + atmos_ocean_sign * g * 0.5 * ( & ( var(k,j,i) - ref_state(k) ) / ref_state(k) + & ( var(k+1,j,i) - ref_state(k+1) ) / ref_state(k+1) & ) ENDDO ENDDO ENDDO ELSE ! !-- Buoyancy term for a surface with a slope in x-direction. The equations !-- for both the u and w velocity-component contain proportionate terms. !-- Temperature field at time t=0 serves as environmental temperature. !-- Reference temperature (pt_surface) is the one at the lower left corner !-- of the total domain. IF ( wind_component == 1 ) THEN DO i = nxlu, nxr DO j = nys, nyn DO k = nzb_s_inner(j,i)+1, nzt-1 tend(k,j,i) = tend(k,j,i) + g * sin_alpha_surface * & 0.5 * ( ( pt(k,j,i-1) + pt(k,j,i) ) & - ( pt_slope_ref(k,i-1) + pt_slope_ref(k,i) ) & ) / pt_surface ENDDO ENDDO ENDDO ELSEIF ( wind_component == 3 ) THEN DO i = nxl, nxr DO j = nys, nyn DO k = nzb_s_inner(j,i)+1, nzt-1 tend(k,j,i) = tend(k,j,i) + g * cos_alpha_surface * & 0.5 * ( ( pt(k,j,i) + pt(k+1,j,i) ) & - ( pt_slope_ref(k,i) + pt_slope_ref(k+1,i) ) & ) / pt_surface ENDDO ENDDO ENDDO ELSE WRITE( message_string, * ) 'no term for component "',& wind_component,'"' CALL message( 'buoyancy', 'PA0159', 1, 2, 0, 6, 0 ) ENDIF ENDIF END SUBROUTINE buoyancy !------------------------------------------------------------------------------! ! Call for all grid points - accelerator version !------------------------------------------------------------------------------! SUBROUTINE buoyancy_acc( var, wind_component ) USE arrays_3d USE control_parameters USE indices USE pegrid IMPLICIT NONE INTEGER :: i, j, k, wind_component #if defined( __nopointer ) REAL, DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var #else REAL, DIMENSION(:,:,:), POINTER :: var #endif IF ( .NOT. sloping_surface ) THEN ! !-- Normal case: horizontal surface !$acc kernels present( nzb_s_inner, ref_state, tend, var ) !$acc loop DO i = i_left, i_right DO j = j_south, j_north !$acc loop independent vector(32) DO k = nzb_s_inner(j,i)+1, nzt-1 tend(k,j,i) = tend(k,j,i) + atmos_ocean_sign * g * 0.5 * ( & ( var(k,j,i) - ref_state(k) ) / ref_state(k) + & ( var(k+1,j,i) - ref_state(k+1) ) / ref_state(k+1) & ) ENDDO ENDDO ENDDO !$acc end kernels ELSE ! !-- Buoyancy term for a surface with a slope in x-direction. The equations !-- for both the u and w velocity-component contain proportionate terms. !-- Temperature field at time t=0 serves as environmental temperature. !-- Reference temperature (pt_surface) is the one at the lower left corner !-- of the total domain. IF ( wind_component == 1 ) THEN DO i = nxlu, nxr DO j = nys, nyn DO k = nzb_s_inner(j,i)+1, nzt-1 tend(k,j,i) = tend(k,j,i) + g * sin_alpha_surface * & 0.5 * ( ( pt(k,j,i-1) + pt(k,j,i) ) & - ( pt_slope_ref(k,i-1) + pt_slope_ref(k,i) ) & ) / pt_surface ENDDO ENDDO ENDDO ELSEIF ( wind_component == 3 ) THEN DO i = nxl, nxr DO j = nys, nyn DO k = nzb_s_inner(j,i)+1, nzt-1 tend(k,j,i) = tend(k,j,i) + g * cos_alpha_surface * & 0.5 * ( ( pt(k,j,i) + pt(k+1,j,i) ) & - ( pt_slope_ref(k,i) + pt_slope_ref(k+1,i) ) & ) / pt_surface ENDDO ENDDO ENDDO ELSE WRITE( message_string, * ) 'no term for component "',& wind_component,'"' CALL message( 'buoyancy', 'PA0159', 1, 2, 0, 6, 0 ) ENDIF ENDIF END SUBROUTINE buoyancy_acc !------------------------------------------------------------------------------! ! Call for grid point i,j ! ATTENTION: PGI-compiler creates SIGFPE if opt>1 is used! Therefore, opt=1 is ! forced by compiler-directive. !------------------------------------------------------------------------------! !pgi$r opt=1 SUBROUTINE buoyancy_ij( i, j, var, wind_component ) USE arrays_3d USE control_parameters USE indices USE pegrid IMPLICIT NONE INTEGER :: i, j, k, pr, wind_component #if defined( __nopointer ) REAL, DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var #else REAL, DIMENSION(:,:,:), POINTER :: var #endif IF ( .NOT. sloping_surface ) THEN ! !-- Normal case: horizontal surface DO k = nzb_s_inner(j,i)+1, nzt-1 tend(k,j,i) = tend(k,j,i) + atmos_ocean_sign * g * 0.5 * ( & ( var(k,j,i) - ref_state(k) ) / ref_state(k) + & ( var(k+1,j,i) - ref_state(k+1) ) / ref_state(k+1) & ) ENDDO ELSE ! !-- Buoyancy term for a surface with a slope in x-direction. The equations !-- for both the u and w velocity-component contain proportionate terms. !-- Temperature field at time t=0 serves as environmental temperature. !-- Reference temperature (pt_surface) is the one at the lower left corner !-- of the total domain. IF ( wind_component == 1 ) THEN DO k = nzb_s_inner(j,i)+1, nzt-1 tend(k,j,i) = tend(k,j,i) + g * sin_alpha_surface * & 0.5 * ( ( pt(k,j,i-1) + pt(k,j,i) ) & - ( pt_slope_ref(k,i-1) + pt_slope_ref(k,i) ) & ) / pt_surface ENDDO ELSEIF ( wind_component == 3 ) THEN DO k = nzb_s_inner(j,i)+1, nzt-1 tend(k,j,i) = tend(k,j,i) + g * cos_alpha_surface * & 0.5 * ( ( pt(k,j,i) + pt(k+1,j,i) ) & - ( pt_slope_ref(k,i) + pt_slope_ref(k+1,i) ) & ) / pt_surface ENDDO ELSE WRITE( message_string, * ) 'no term for component "',& wind_component,'"' CALL message( 'buoyancy', 'PA0159', 1, 2, 0, 6, 0 ) ENDIF ENDIF END SUBROUTINE buoyancy_ij SUBROUTINE calc_mean_profile( var, pr ) !------------------------------------------------------------------------------! ! Description: ! ------------ ! Calculate the horizontally averaged vertical temperature profile (pr=4 in case ! of potential temperature, 44 in case of virtual potential temperature, and 64 ! in case of density (ocean runs)). !------------------------------------------------------------------------------! USE arrays_3d, ONLY: ref_state USE control_parameters USE indices USE pegrid USE statistics IMPLICIT NONE INTEGER :: i, j, k, omp_get_thread_num, pr, tn #if defined( __nopointer ) REAL, DIMENSION(:,:,:) :: var #else REAL, DIMENSION(:,:,:), POINTER :: var #endif ! !-- Computation of the horizontally averaged profile of variable var, unless !-- already done by the relevant call from flow_statistics. The calculation !-- is done only for the first respective intermediate timestep in order to !-- spare communication time and to produce identical model results with jobs !-- which are calling flow_statistics at different time intervals. IF ( .NOT. flow_statistics_called .AND. & intermediate_timestep_count == 1 ) THEN ! !-- Horizontal average of variable var tn = 0 ! Default thread number in case of one thread !$OMP PARALLEL PRIVATE( i, j, k, tn ) !$ tn = omp_get_thread_num() sums_l(:,pr,tn) = 0.0 !$OMP DO DO i = nxl, nxr DO j = nys, nyn DO k = nzb_s_inner(j,i), nzt+1 sums_l(k,pr,tn) = sums_l(k,pr,tn) + var(k,j,i) ENDDO ENDDO ENDDO !$OMP END PARALLEL DO i = 1, threads_per_task-1 sums_l(:,pr,0) = sums_l(:,pr,0) + sums_l(:,pr,i) ENDDO #if defined( __parallel ) IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) CALL MPI_ALLREDUCE( sums_l(nzb,pr,0), sums(nzb,pr), nzt+2-nzb, & MPI_REAL, MPI_SUM, comm2d, ierr ) #else sums(:,pr) = sums_l(:,pr,0) #endif hom(:,1,pr,0) = sums(:,pr) / ngp_2dh_s_inner(:,0) ENDIF ref_state(:) = hom(:,1,pr,0) ! this is used in the buoyancy term END SUBROUTINE calc_mean_profile END MODULE buoyancy_mod