!> @file nudging.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 . ! ! Copyright 1997-2014 Leibniz Universitaet Hannover !--------------------------------------------------------------------------------! ! ! Current revisions: ! ------------------ ! ! ! Former revisions: ! ----------------- ! $Id: nudging.f90 1683 2015-10-07 23:57:51Z knoop $ ! ! 1682 2015-10-07 23:56:08Z knoop ! Code annotations made doxygen readable ! ! 1398 2014-05-07 11:15:00Z heinze ! Subroutine nudge_ref is extended to set u_init and v_init to the current ! nudging profiles ! ! 1382 2014-04-30 12:15:41Z boeske ! Changed the weighting factor that is used in the summation of nudging ! tendencies for profile data output from weight_pres to weight_substep, ! added Neumann boundary conditions for profile data output of nudging terms at ! nzt+1 ! ! 1380 2014-04-28 12:40:45Z heinze ! Subroutine nudge_ref added to account for proper upper scalar boundary ! conditions in case of nudging ! ! 1365 2014-04-22 15:03:56Z boeske ! Variable t renamed nt, variable currtnudge renamed tmp_tnudge, ! summation of nudging tendencies for data output added ! +sums_ls_l, tmp_tend ! Added new subroutine calc_tnudge, which calculates the current nudging time ! scale at each time step ! ! 1355 2014-04-10 10:21:29Z heinze ! Error message specified. ! ! 1353 2014-04-08 15:21:23Z heinze ! REAL constants provided with KIND-attribute ! ! 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 ! module interfaces removed ! ! 1268 2013-12-12 09:47:53Z heinze ! bugfix: argument of calc_mean_profile corrected ! ! 1251 2013-11-07 08:14:30Z heinze ! bugfix: calculate dtm and dtp also in vector version ! ! 1249 2013-11-06 10:45:47Z heinze ! remove call of user module ! reformatting ! ! 1241 2013-10-30 11:36:58Z heinze ! Initial revision ! ! Description: ! ------------ !> Nudges u, v, pt and q to given profiles on a relaxation timescale tnudge. !> Profiles are read in from NUDGIN_DATA. Code is based on Neggers et al. (2012) !> and also part of DALES and UCLA-LES. !--------------------------------------------------------------------------------! MODULE nudge_mod PRIVATE PUBLIC init_nudge, calc_tnudge, nudge, nudge_ref SAVE INTERFACE nudge MODULE PROCEDURE nudge MODULE PROCEDURE nudge_ij END INTERFACE nudge CONTAINS !------------------------------------------------------------------------------! ! Description: ! ------------ !> @todo Missing subroutine description. !------------------------------------------------------------------------------! SUBROUTINE init_nudge USE arrays_3d, & ONLY: ptnudge, qnudge, timenudge, tmp_tnudge, tnudge, unudge, & vnudge, wnudge, zu USE control_parameters, & ONLY: dt_3d, lptnudge, lqnudge, lunudge, lvnudge, lwnudge, & message_string, ntnudge USE indices, & ONLY: nzb, nzt USE kinds IMPLICIT NONE INTEGER(iwp) :: finput = 90 !< INTEGER(iwp) :: ierrn !< INTEGER(iwp) :: k !< INTEGER(iwp) :: nt !< CHARACTER(1) :: hash !< REAL(wp) :: highheight !< REAL(wp) :: highqnudge !< REAL(wp) :: highptnudge !< REAL(wp) :: highunudge !< REAL(wp) :: highvnudge !< REAL(wp) :: highwnudge !< REAL(wp) :: hightnudge !< REAL(wp) :: lowheight !< REAL(wp) :: lowqnudge !< REAL(wp) :: lowptnudge !< REAL(wp) :: lowunudge !< REAL(wp) :: lowvnudge !< REAL(wp) :: lowwnudge !< REAL(wp) :: lowtnudge !< REAL(wp) :: fac !< ALLOCATE( ptnudge(nzb:nzt+1,1:ntnudge), qnudge(nzb:nzt+1,1:ntnudge), & tnudge(nzb:nzt+1,1:ntnudge), unudge(nzb:nzt+1,1:ntnudge), & vnudge(nzb:nzt+1,1:ntnudge), wnudge(nzb:nzt+1,1:ntnudge) ) ALLOCATE( tmp_tnudge(nzb:nzt) ) ALLOCATE( timenudge(0:ntnudge) ) ptnudge = 0.0_wp; qnudge = 0.0_wp; tnudge = 0.0_wp; unudge = 0.0_wp vnudge = 0.0_wp; wnudge = 0.0_wp; timenudge = 0.0_wp ! !-- Initialize array tmp_nudge with a current nudging time scale of 6 hours tmp_tnudge = 21600.0_wp nt = 0 OPEN ( finput, FILE='NUDGING_DATA', STATUS='OLD', & FORM='FORMATTED', IOSTAT=ierrn ) IF ( ierrn /= 0 ) THEN message_string = 'file NUDGING_DATA does not exist' CALL message( 'nudging', 'PA0365', 1, 2, 0, 6, 0 ) ENDIF ierrn = 0 rloop:DO nt = nt + 1 hash = "#" ierrn = 1 ! not zero ! !-- Search for the next line consisting of "# time", !-- from there onwards the profiles will be read DO WHILE ( .NOT. ( hash == "#" .AND. ierrn == 0 ) ) READ ( finput, *, IOSTAT=ierrn ) hash, timenudge(nt) IF ( ierrn < 0 ) EXIT rloop ENDDO ierrn = 0 READ ( finput, *, IOSTAT=ierrn ) lowheight, lowtnudge, lowunudge, & lowvnudge, lowwnudge , lowptnudge, & lowqnudge IF ( ierrn /= 0 ) THEN message_string = 'errors in file NUDGING_DATA' CALL message( 'nudging', 'PA0366', 1, 2, 0, 6, 0 ) ENDIF ierrn = 0 READ ( finput, *, IOSTAT=ierrn ) highheight, hightnudge, highunudge, & highvnudge, highwnudge , highptnudge, & highqnudge IF ( ierrn /= 0 ) THEN message_string = 'errors in file NUDGING_DATA' CALL message( 'nudging', 'PA0366', 1, 2, 0, 6, 0 ) ENDIF DO k = nzb, nzt+1 IF ( highheight < zu(k) ) THEN lowheight = highheight lowtnudge = hightnudge lowunudge = highunudge lowvnudge = highvnudge lowwnudge = highwnudge lowptnudge = highptnudge lowqnudge = highqnudge ierrn = 0 READ ( finput, *, IOSTAT=ierrn ) highheight , hightnudge , & highunudge , highvnudge , & highwnudge , highptnudge, & highqnudge IF (ierrn /= 0 ) THEN WRITE( message_string, * ) 'zu(nzt+1) = ', zu(nzt+1), 'm is ',& 'higher than the maximum height in NUDING_DATA which ', & 'is ', lowheight, 'm. Interpolation on PALM ', & 'grid is not possible.' CALL message( 'nudging', 'PA0364', 1, 2, 0, 6, 0 ) ENDIF ENDIF ! !-- Interpolation of prescribed profiles in space fac = ( highheight - zu(k) ) / ( highheight - lowheight ) tnudge(k,nt) = fac * lowtnudge + ( 1.0_wp - fac ) * hightnudge unudge(k,nt) = fac * lowunudge + ( 1.0_wp - fac ) * highunudge vnudge(k,nt) = fac * lowvnudge + ( 1.0_wp - fac ) * highvnudge wnudge(k,nt) = fac * lowwnudge + ( 1.0_wp - fac ) * highwnudge ptnudge(k,nt) = fac * lowptnudge + ( 1.0_wp - fac ) * highptnudge qnudge(k,nt) = fac * lowqnudge + ( 1.0_wp - fac ) * highqnudge ENDDO ENDDO rloop CLOSE ( finput ) ! !-- Prevent nudging if nudging profiles exhibt too small values !-- not used so far lptnudge = ANY( ABS( ptnudge ) > 1.0e-8_wp ) lqnudge = ANY( ABS( qnudge ) > 1.0e-8_wp ) lunudge = ANY( ABS( unudge ) > 1.0e-8_wp ) lvnudge = ANY( ABS( vnudge ) > 1.0e-8_wp ) lwnudge = ANY( ABS( wnudge ) > 1.0e-8_wp ) END SUBROUTINE init_nudge !------------------------------------------------------------------------------! ! Description: ! ------------ !> @todo Missing subroutine description. !------------------------------------------------------------------------------! SUBROUTINE calc_tnudge ( time ) USE arrays_3d, & ONLY: timenudge, tmp_tnudge, tnudge USE control_parameters, & ONLY: dt_3d USE indices, & ONLY: nzb, nzt USE kinds IMPLICIT NONE REAL(wp) :: dtm !< REAL(wp) :: dtp !< REAL(wp) :: time !< INTEGER(iwp) :: k !< INTEGER(iwp) :: nt !< nt = 1 DO WHILE ( time > timenudge(nt) ) nt = nt+1 ENDDO IF ( time /= timenudge(1) ) THEN nt = nt-1 ENDIF dtm = ( time - timenudge(nt) ) / ( timenudge(nt+1) - timenudge(nt) ) dtp = ( timenudge(nt+1) - time ) / ( timenudge(nt+1) - timenudge(nt) ) DO k = nzb, nzt tmp_tnudge(k) = MAX( dt_3d, tnudge(k,nt) * dtp + tnudge(k,nt+1) * dtm ) ENDDO END SUBROUTINE calc_tnudge !------------------------------------------------------------------------------! ! Description: ! ------------ !> Call for all grid points !------------------------------------------------------------------------------! SUBROUTINE nudge ( time, prog_var ) USE arrays_3d, & ONLY: pt, ptnudge, q, qnudge, tend, timenudge, tmp_tnudge, tnudge, & u, unudge, v, vnudge USE control_parameters, & ONLY: dt_3d, intermediate_timestep_count, message_string USE indices, & ONLY: nxl, nxr, nys, nyn, nzb, nzb_u_inner, nzt USE kinds USE statistics, & ONLY: hom, sums_ls_l, weight_substep IMPLICIT NONE CHARACTER (LEN=*) :: prog_var !< REAL(wp) :: tmp_tend !< REAL(wp) :: dtm !< REAL(wp) :: dtp !< REAL(wp) :: time !< INTEGER(iwp) :: i !< INTEGER(iwp) :: j !< INTEGER(iwp) :: k !< INTEGER(iwp) :: nt !< nt = 1 DO WHILE ( time > timenudge(nt) ) nt = nt+1 ENDDO IF ( time /= timenudge(1) ) THEN nt = nt-1 ENDIF dtm = ( time - timenudge(nt) ) / ( timenudge(nt+1) - timenudge(nt) ) dtp = ( timenudge(nt+1) - time ) / ( timenudge(nt+1) - timenudge(nt) ) SELECT CASE ( prog_var ) CASE ( 'u' ) DO i = nxl, nxr DO j = nys, nyn DO k = nzb_u_inner(j,i)+1, nzt tmp_tend = - ( hom(k,1,1,0) - ( unudge(k,nt) * dtp + & unudge(k,nt+1) * dtm ) ) / tmp_tnudge(k) tend(k,j,i) = tend(k,j,i) + tmp_tend sums_ls_l(k,6) = sums_ls_l(k,6) + tmp_tend * & weight_substep(intermediate_timestep_count) ENDDO sums_ls_l(nzt+1,6) = sums_ls_l(nzt,6) ENDDO ENDDO CASE ( 'v' ) DO i = nxl, nxr DO j = nys, nyn DO k = nzb_u_inner(j,i)+1, nzt tmp_tend = - ( hom(k,1,2,0) - ( vnudge(k,nt) * dtp + & vnudge(k,nt+1) * dtm ) ) / tmp_tnudge(k) tend(k,j,i) = tend(k,j,i) + tmp_tend sums_ls_l(k,7) = sums_ls_l(k,7) + tmp_tend * & weight_substep(intermediate_timestep_count) ENDDO sums_ls_l(nzt+1,7) = sums_ls_l(nzt,7) ENDDO ENDDO CASE ( 'pt' ) DO i = nxl, nxr DO j = nys, nyn DO k = nzb_u_inner(j,i)+1, nzt tmp_tend = - ( hom(k,1,4,0) - ( ptnudge(k,nt) * dtp + & ptnudge(k,nt+1) * dtm ) ) / tmp_tnudge(k) tend(k,j,i) = tend(k,j,i) + tmp_tend sums_ls_l(k,4) = sums_ls_l(k,4) + tmp_tend * & weight_substep(intermediate_timestep_count) ENDDO sums_ls_l(nzt+1,4) = sums_ls_l(nzt,4) ENDDO ENDDO CASE ( 'q' ) DO i = nxl, nxr DO j = nys, nyn DO k = nzb_u_inner(j,i)+1, nzt tmp_tend = - ( hom(k,1,41,0) - ( qnudge(k,nt) * dtp + & qnudge(k,nt+1) * dtm ) ) / tmp_tnudge(k) tend(k,j,i) = tend(k,j,i) + tmp_tend sums_ls_l(k,5) = sums_ls_l(k,5) + tmp_tend * & weight_substep(intermediate_timestep_count) ENDDO sums_ls_l(nzt+1,5) = sums_ls_l(nzt,5) ENDDO ENDDO CASE DEFAULT message_string = 'unknown prognostic variable "' // prog_var // '"' CALL message( 'nudge', 'PA0367', 1, 2, 0, 6, 0 ) END SELECT END SUBROUTINE nudge !------------------------------------------------------------------------------! ! Description: ! ------------ !> Call for grid point i,j !------------------------------------------------------------------------------! SUBROUTINE nudge_ij( i, j, time, prog_var ) USE arrays_3d, & ONLY: pt, ptnudge, q, qnudge, tend, timenudge, tmp_tnudge, tnudge, & u, unudge, v, vnudge USE control_parameters, & ONLY: dt_3d, intermediate_timestep_count, message_string USE indices, & ONLY: nxl, nxr, nys, nyn, nzb, nzb_u_inner, nzt USE kinds USE statistics, & ONLY: hom, sums_ls_l, weight_substep IMPLICIT NONE CHARACTER (LEN=*) :: prog_var !< REAL(wp) :: tmp_tend !< REAL(wp) :: dtm !< REAL(wp) :: dtp !< REAL(wp) :: time !< INTEGER(iwp) :: i !< INTEGER(iwp) :: j !< INTEGER(iwp) :: k !< INTEGER(iwp) :: nt !< nt = 1 DO WHILE ( time > timenudge(nt) ) nt = nt+1 ENDDO IF ( time /= timenudge(1) ) THEN nt = nt-1 ENDIF dtm = ( time - timenudge(nt) ) / ( timenudge(nt+1) - timenudge(nt) ) dtp = ( timenudge(nt+1) - time ) / ( timenudge(nt+1) - timenudge(nt) ) SELECT CASE ( prog_var ) CASE ( 'u' ) DO k = nzb_u_inner(j,i)+1, nzt tmp_tend = - ( hom(k,1,1,0) - ( unudge(k,nt) * dtp + & unudge(k,nt+1) * dtm ) ) / tmp_tnudge(k) tend(k,j,i) = tend(k,j,i) + tmp_tend sums_ls_l(k,6) = sums_ls_l(k,6) + tmp_tend & * weight_substep(intermediate_timestep_count) ENDDO sums_ls_l(nzt+1,6) = sums_ls_l(nzt,6) CASE ( 'v' ) DO k = nzb_u_inner(j,i)+1, nzt tmp_tend = - ( hom(k,1,2,0) - ( vnudge(k,nt) * dtp + & vnudge(k,nt+1) * dtm ) ) / tmp_tnudge(k) tend(k,j,i) = tend(k,j,i) + tmp_tend sums_ls_l(k,7) = sums_ls_l(k,7) + tmp_tend & * weight_substep(intermediate_timestep_count) ENDDO sums_ls_l(nzt+1,7) = sums_ls_l(nzt,7) CASE ( 'pt' ) DO k = nzb_u_inner(j,i)+1, nzt tmp_tend = - ( hom(k,1,4,0) - ( ptnudge(k,nt) * dtp + & ptnudge(k,nt+1) * dtm ) ) / tmp_tnudge(k) tend(k,j,i) = tend(k,j,i) + tmp_tend sums_ls_l(k,4) = sums_ls_l(k,4) + tmp_tend & * weight_substep(intermediate_timestep_count) ENDDO sums_ls_l(nzt+1,4) = sums_ls_l(nzt,4) CASE ( 'q' ) DO k = nzb_u_inner(j,i)+1, nzt tmp_tend = - ( hom(k,1,41,0) - ( qnudge(k,nt) * dtp + & qnudge(k,nt+1) * dtm ) ) / tmp_tnudge(k) tend(k,j,i) = tend(k,j,i) + tmp_tend sums_ls_l(k,5) = sums_ls_l(k,5) + tmp_tend & * weight_substep(intermediate_timestep_count) ENDDO sums_ls_l(nzt+1,5) = sums_ls_l(nzt,5) CASE DEFAULT message_string = 'unknown prognostic variable "' // prog_var // '"' CALL message( 'nudge', 'PA0367', 1, 2, 0, 6, 0 ) END SELECT END SUBROUTINE nudge_ij !------------------------------------------------------------------------------! ! Description: ! ------------ !> @todo Missing subroutine description. !------------------------------------------------------------------------------! SUBROUTINE nudge_ref ( time ) USE arrays_3d, & ONLY: time_vert, ptnudge, pt_init, qnudge, q_init, unudge, u_init, & vnudge, v_init USE kinds IMPLICIT NONE INTEGER(iwp) :: nt !< REAL(wp) :: fac !< REAL(wp), INTENT(in) :: time !< ! !-- Interpolation in time of NUDGING_DATA for pt_init and q_init. This is !-- needed for correct upper boundary conditions for pt and q and in case that ! large scale subsidence as well as scalar Rayleigh-damping are used nt = 1 DO WHILE ( time > time_vert(nt) ) nt = nt + 1 ENDDO IF ( time /= time_vert(nt) ) THEN nt = nt - 1 ENDIF fac = ( time-time_vert(nt) ) / ( time_vert(nt+1)-time_vert(nt) ) pt_init = ptnudge(:,nt) + fac * ( ptnudge(:,nt+1) - ptnudge(:,nt) ) q_init = qnudge(:,nt) + fac * ( qnudge(:,nt+1) - qnudge(:,nt) ) u_init = unudge(:,nt) + fac * ( unudge(:,nt+1) - unudge(:,nt) ) v_init = vnudge(:,nt) + fac * ( vnudge(:,nt+1) - vnudge(:,nt) ) END SUBROUTINE nudge_ref END MODULE nudge_mod