!> @file advec_s_bc.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 1997-2021 Leibniz Universitaet Hannover ! -------------------------------------------------------------------------------------------------! ! ! Description: ! ------------ !> Advection term for scalar quantities using the Bott-Chlond scheme. !> Computation in individual steps for each of the three dimensions. !> Limiting assumptions: !> So far the scheme has been assuming equidistant grid spacing. As this is not the case in the !> stretched portion of the z-direction, there dzw(k) is used as a substitute for a constant grid !> length. This certainly causes incorrect results; however, it is hoped that they are not too !> apparent for weakly stretched grids. !> NOTE: This is a provisional, non-optimised version! !--------------------------------------------------------------------------------------------------! MODULE advec_s_bc_mod PRIVATE PUBLIC advec_s_bc INTERFACE advec_s_bc MODULE PROCEDURE advec_s_bc END INTERFACE advec_s_bc CONTAINS !--------------------------------------------------------------------------------------------------! ! Description: ! ------------ !> @todo Missing subroutine description. !--------------------------------------------------------------------------------------------------! SUBROUTINE advec_s_bc( sk, sk_char ) #if defined( __parallel ) USE MPI #endif USE advection, & ONLY: aex, bex, dex, eex USE arrays_3d, & ONLY: d, ddzw, dzu, dzw, tend, u, v, w USE control_parameters, & ONLY: bc_pt_t_val, bc_q_t_val, bc_s_t_val, dt_3d, ibc_pt_b, ibc_pt_t, ibc_q_t, ibc_s_t,& message_string, pt_slope_offset, sloping_surface, u_gtrans, v_gtrans USE cpulog, & ONLY: cpu_log, log_point_s USE grid_variables, & ONLY: ddx, ddy USE indices, & ONLY: nx, nxl, nxr, nyn, nys, nzb, nzt USE kinds USE pegrid USE statistics, & ONLY: rmask, statistic_regions, sums_wsts_bc_l IMPLICIT NONE CHARACTER (LEN=*) :: sk_char !< INTEGER(iwp) :: i !< INTEGER(iwp) :: ix !< INTEGER(iwp) :: j !< INTEGER(iwp) :: k !< INTEGER(iwp) :: sr !< #if defined( __parallel ) INTEGER(iwp) :: ngp !< INTEGER(iwp) :: type_xz_2 !< #endif REAL(wp) :: cim !< REAL(wp) :: cimf !< REAL(wp) :: cip !< REAL(wp) :: cipf !< REAL(wp) :: d_new !< REAL(wp) :: denomi !< denominator REAL(wp) :: fminus !< REAL(wp) :: fplus !< REAL(wp) :: f2 !< REAL(wp) :: f4 !< REAL(wp) :: f8 !< REAL(wp) :: f12 !< REAL(wp) :: f24 !< REAL(wp) :: f48 !< REAL(wp) :: f1920 !< REAL(wp) :: im !< REAL(wp) :: ip !< REAL(wp) :: m1n !< REAL(wp) :: m1z !< REAL(wp) :: m2 !< REAL(wp) :: m3 !< REAL(wp) :: numera !< numerator REAL(wp) :: snenn !< REAL(wp) :: sterm !< REAL(wp) :: tendcy !< REAL(wp) :: t1 !< REAL(wp) :: t2 !< REAL(wp) :: fmax(2) !< REAL(wp) :: fmax_l(2) !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: a0 !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: a1 !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: a12 !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: a2 !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: a22 !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: immb !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: imme !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: impb !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: impe !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: ipmb !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: ipme !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: ippb !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: ippe !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: m1 !< REAL(wp), DIMENSION(:,:), ALLOCATABLE :: sw !< REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: sk_p !< REAL(wp), DIMENSION(:,:,:), POINTER :: sk !< ! !-- Array sk_p requires 2 extra elements for each dimension ALLOCATE( sk_p(nzb-2:nzt+3,nys-3:nyn+3,nxl-3:nxr+3) ) sk_p = 0.0_wp ! !-- Assign reciprocal values in order to avoid divisions later f2 = 0.5_wp f4 = 0.25_wp f8 = 0.125_wp f12 = 0.8333333333333333E-01_wp f24 = 0.4166666666666666E-01_wp f48 = 0.2083333333333333E-01_wp f1920 = 0.5208333333333333E-03_wp ! !-- Advection in x-direction: ! !-- Save the quantity to be advected in a local array !-- add an enlarged boundary in x-direction DO i = nxl-1, nxr+1 DO j = nys, nyn DO k = nzb, nzt+1 sk_p(k,j,i) = sk(k,j,i) ENDDO ENDDO ENDDO #if defined( __parallel ) ngp = 2 * ( nzt - nzb + 6 ) * ( nyn - nys + 7 ) CALL cpu_log( log_point_s(11), 'advec_s_bc:sendrecv', 'start' ) ! !-- Send left boundary, receive right boundary CALL MPI_SENDRECV( sk_p(nzb-2,nys-3,nxl+1), ngp, MPI_REAL, pleft, 0, & sk_p(nzb-2,nys-3,nxr+2), ngp, MPI_REAL, pright, 0, & comm2d, status, ierr ) ! !-- Send right boundary, receive left boundary CALL MPI_SENDRECV( sk_p(nzb-2,nys-3,nxr-2), ngp, MPI_REAL, pright, 1, & sk_p(nzb-2,nys-3,nxl-3), ngp, MPI_REAL, pleft, 1, & comm2d, status, ierr ) CALL cpu_log( log_point_s(11), 'advec_s_bc:sendrecv', 'pause' ) #else ! !-- Cyclic boundary conditions sk_p(:,nys:nyn,nxl-3) = sk_p(:,nys:nyn,nxr-2) sk_p(:,nys:nyn,nxl-2) = sk_p(:,nys:nyn,nxr-1) sk_p(:,nys:nyn,nxr+2) = sk_p(:,nys:nyn,nxl+1) sk_p(:,nys:nyn,nxr+3) = sk_p(:,nys:nyn,nxl+2) #endif ! !-- In case of a sloping surface, the additional gridpoints in x-direction of the temperature !-- field at the left and right boundary of the total domain must be adjusted by the temperature !-- difference between this distance IF ( sloping_surface .AND. sk_char == 'pt' ) THEN IF ( nxl == 0 ) THEN sk_p(:,nys:nyn,nxl-3) = sk_p(:,nys:nyn,nxl-3) - pt_slope_offset sk_p(:,nys:nyn,nxl-2) = sk_p(:,nys:nyn,nxl-2) - pt_slope_offset ENDIF IF ( nxr == nx ) THEN sk_p(:,nys:nyn,nxr+2) = sk_p(:,nys:nyn,nxr+2) + pt_slope_offset sk_p(:,nys:nyn,nxr+3) = sk_p(:,nys:nyn,nxr+3) + pt_slope_offset ENDIF ENDIF ! !-- Initialise control density d = 0.0_wp ! !-- Determine maxima of the first and second derivative in x-direction fmax_l = 0.0_wp DO i = nxl, nxr DO j = nys, nyn DO k = nzb+1, nzt numera = ABS( sk_p(k,j,i+1) - 2.0_wp * sk_p(k,j,i) + sk_p(k,j,i-1) ) denomi = ABS( sk_p(k,j,i+1) - sk_p(k,j,i-1) ) fmax_l(1) = MAX( fmax_l(1) , numera ) fmax_l(2) = MAX( fmax_l(2) , denomi ) ENDDO ENDDO ENDDO #if defined( __parallel ) IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) CALL MPI_ALLREDUCE( fmax_l, fmax, 2, MPI_REAL, MPI_MAX, comm2d, ierr ) #else fmax = fmax_l #endif fmax = 0.04_wp * fmax ! !-- Allocate temporary arrays ALLOCATE( a0(nzb+1:nzt,nxl-1:nxr+1), a1(nzb+1:nzt,nxl-1:nxr+1), a2(nzb+1:nzt,nxl-1:nxr+1),& a12(nzb+1:nzt,nxl-1:nxr+1), a22(nzb+1:nzt,nxl-1:nxr+1), & immb(nzb+1:nzt,nxl-1:nxr+1), imme(nzb+1:nzt,nxl-1:nxr+1), & impb(nzb+1:nzt,nxl-1:nxr+1), impe(nzb+1:nzt,nxl-1:nxr+1), & ipmb(nzb+1:nzt,nxl-1:nxr+1), ipme(nzb+1:nzt,nxl-1:nxr+1), & ippb(nzb+1:nzt,nxl-1:nxr+1), ippe(nzb+1:nzt,nxl-1:nxr+1), & m1(nzb+1:nzt,nxl-2:nxr+2), sw(nzb+1:nzt,nxl-1:nxr+1) & ) imme = 0.0_wp; impe = 0.0_wp; ipme = 0.0_wp; ippe = 0.0_wp ! !-- Initialise point of time measuring of the exponential portion (this would not work if done !-- locally within the loop) CALL cpu_log( log_point_s(12), 'advec_s_bc:exp', 'start' ) CALL cpu_log( log_point_s(12), 'advec_s_bc:exp', 'pause' ) DO j = nys, nyn ! !-- Compute polynomial coefficients DO i = nxl-1, nxr+1 DO k = nzb+1, nzt a12(k,i) = 0.5_wp * ( sk_p(k,j,i+1) - sk_p(k,j,i-1) ) a22(k,i) = 0.5_wp * ( sk_p(k,j,i+1) - 2.0_wp * sk_p(k,j,i) + sk_p(k,j,i-1) ) a0(k,i) = ( 9.0_wp * sk_p(k,j,i+2) - 116.0_wp * sk_p(k,j,i+1) & + 2134.0_wp * sk_p(k,j,i) - 116.0_wp * sk_p(k,j,i-1) & + 9.0_wp * sk_p(k,j,i-2) & ) * f1920 a1(k,i) = ( -5.0_wp * sk_p(k,j,i+2) + 34.0_wp * sk_p(k,j,i+1) & - 34.0_wp * sk_p(k,j,i-1) + 5.0_wp * sk_p(k,j,i-2) & ) * f48 a2(k,i) = ( -3.0_wp * sk_p(k,j,i+2) + 36.0_wp * sk_p(k,j,i+1) & - 66.0_wp * sk_p(k,j,i) + 36.0_wp * sk_p(k,j,i-1) & - 3.0_wp * sk_p(k,j,i-2) & ) * f48 ENDDO ENDDO ! !-- Fluxes using the Bott scheme DO i = nxl, nxr DO k = nzb+1, nzt cip = MAX( 0.0_wp, ( u(k,j,i+1) - u_gtrans ) * dt_3d * ddx ) cim = -MIN( 0.0_wp, ( u(k,j,i+1) - u_gtrans ) * dt_3d * ddx ) cipf = 1.0_wp - 2.0_wp * cip cimf = 1.0_wp - 2.0_wp * cim ip = a0(k,i) * f2 * ( 1.0_wp - cipf ) & + a1(k,i) * f8 * ( 1.0_wp - cipf*cipf ) & + a2(k,i) * f24 * ( 1.0_wp - cipf*cipf*cipf ) im = a0(k,i+1) * f2 * ( 1.0_wp - cimf ) & - a1(k,i+1) * f8 * ( 1.0_wp - cimf*cimf ) & + a2(k,i+1) * f24 * ( 1.0_wp - cimf*cimf*cimf ) ip = MAX( ip, 0.0_wp ) im = MAX( im, 0.0_wp ) ippb(k,i) = ip * MIN( 1.0_wp, sk_p(k,j,i) / (ip+im+1E-15_wp) ) impb(k,i) = im * MIN( 1.0_wp, sk_p(k,j,i+1) / (ip+im+1E-15_wp) ) cip = MAX( 0.0_wp, ( u(k,j,i) - u_gtrans ) * dt_3d * ddx ) cim = -MIN( 0.0_wp, ( u(k,j,i) - u_gtrans ) * dt_3d * ddx ) cipf = 1.0_wp - 2.0_wp * cip cimf = 1.0_wp - 2.0_wp * cim ip = a0(k,i-1) * f2 * ( 1.0_wp - cipf ) & + a1(k,i-1) * f8 * ( 1.0_wp - cipf*cipf ) & + a2(k,i-1) * f24 * ( 1.0_wp - cipf*cipf*cipf ) im = a0(k,i) * f2 * ( 1.0_wp - cimf ) & - a1(k,i) * f8 * ( 1.0_wp - cimf*cimf ) & + a2(k,i) * f24 * ( 1.0_wp - cimf*cimf*cimf ) ip = MAX( ip, 0.0_wp ) im = MAX( im, 0.0_wp ) ipmb(k,i) = ip * MIN( 1.0_wp, sk_p(k,j,i-1) / (ip+im+1E-15_wp) ) immb(k,i) = im * MIN( 1.0_wp, sk_p(k,j,i) / (ip+im+1E-15_wp) ) ENDDO ENDDO ! !-- Compute monitor function m1 DO i = nxl-2, nxr+2 DO k = nzb+1, nzt m1z = ABS( sk_p(k,j,i+1) - 2.0_wp * sk_p(k,j,i) + sk_p(k,j,i-1) ) m1n = ABS( sk_p(k,j,i+1) - sk_p(k,j,i-1) ) IF ( m1n /= 0.0_wp .AND. m1n >= m1z ) THEN m1(k,i) = m1z / m1n IF ( m1(k,i) /= 2.0_wp .AND. m1n < fmax(2) ) m1(k,i) = 0.0_wp ELSEIF ( m1n < m1z ) THEN m1(k,i) = -1.0_wp ELSE m1(k,i) = 0.0_wp ENDIF ENDDO ENDDO ! !-- Compute switch sw sw = 0.0_wp DO i = nxl-1, nxr+1 DO k = nzb+1, nzt m2 = 2.0_wp * ABS( a1(k,i) - a12(k,i) ) / MAX( ABS( a1(k,i) + a12(k,i) ), 1E-35_wp ) IF ( ABS( a1(k,i) + a12(k,i) ) < fmax(2) ) m2 = 0.0_wp m3 = 2.0_wp * ABS( a2(k,i) - a22(k,i) ) / MAX( ABS( a2(k,i) + a22(k,i) ), 1E-35_wp ) IF ( ABS( a2(k,i) + a22(k,i) ) < fmax(1) ) m3 = 0.0_wp t1 = 0.35_wp t2 = 0.35_wp IF ( m1(k,i) == -1.0_wp ) t2 = 0.12_wp IF ( m1(k,i-1) == 1.0_wp .OR. m1(k,i) == 1.0_wp .OR. m1(k,i+1) == 1.0_wp .OR. & m2 > t2 .OR. m3 > t2 .OR. ( m1(k,i) > t1 .AND. m1(k,i-1) /= -1.0_wp .AND. & m1(k,i) /= -1.0_wp .AND. m1(k,i+1) /= -1.0_wp ) & ) sw(k,i) = 1.0_wp ENDDO ENDDO ! !-- Fluxes using the exponential scheme CALL cpu_log( log_point_s(12), 'advec_s_bc:exp', 'continue' ) DO i = nxl, nxr DO k = nzb+1, nzt IF ( sw(k,i) == 1.0_wp ) THEN snenn = sk_p(k,j,i+1) - sk_p(k,j,i-1) IF ( ABS( snenn ) < 1E-9_wp ) snenn = 1E-9_wp sterm = ( sk_p(k,j,i) - sk_p(k,j,i-1) ) / snenn sterm = MIN( sterm, 0.9999_wp ) sterm = MAX( sterm, 0.0001_wp ) ix = INT( sterm * 1000 ) + 1 cip = MAX( 0.0_wp, ( u(k,j,i+1) - u_gtrans ) * dt_3d * ddx ) ippe(k,i) = sk_p(k,j,i-1) * cip + snenn * ( & aex(ix) * cip + bex(ix) / dex(ix) * ( & eex(ix) - & EXP( dex(ix)*0.5_wp * ( 1.0_wp - 2.0_wp * cip ) ) & ) & ) IF ( sterm == 0.0001_wp ) ippe(k,i) = sk_p(k,j,i) * cip IF ( sterm == 0.9999_wp ) ippe(k,i) = sk_p(k,j,i) * cip snenn = sk_p(k,j,i-1) - sk_p(k,j,i+1) IF ( ABS( snenn ) < 1E-9_wp ) snenn = 1E-9_wp sterm = ( sk_p(k,j,i) - sk_p(k,j,i+1) ) / snenn sterm = MIN( sterm, 0.9999_wp ) sterm = MAX( sterm, 0.0001_wp ) ix = INT( sterm * 1000 ) + 1 cim = -MIN( 0.0_wp, ( u(k,j,i) - u_gtrans ) * dt_3d * ddx ) imme(k,i) = sk_p(k,j,i+1) * cim + snenn * ( & aex(ix) * cim + bex(ix) / dex(ix) * ( & eex(ix) - & EXP( dex(ix)*0.5_wp * ( 1.0_wp - 2.0_wp * cim ) ) & ) & ) IF ( sterm == 0.0001_wp ) imme(k,i) = sk_p(k,j,i) * cim IF ( sterm == 0.9999_wp ) imme(k,i) = sk_p(k,j,i) * cim ENDIF IF ( sw(k,i+1) == 1.0_wp ) THEN snenn = sk_p(k,j,i) - sk_p(k,j,i+2) IF ( ABS( snenn ) < 1E-9_wp ) snenn = 1E-9_wp sterm = ( sk_p(k,j,i+1) - sk_p(k,j,i+2) ) / snenn sterm = MIN( sterm, 0.9999_wp ) sterm = MAX( sterm, 0.0001_wp ) ix = INT( sterm * 1000 ) + 1 cim = -MIN( 0.0_wp, ( u(k,j,i+1) - u_gtrans ) * dt_3d * ddx ) impe(k,i) = sk_p(k,j,i+2) * cim + snenn * ( & aex(ix) * cim + bex(ix) / dex(ix) * ( & eex(ix) - & EXP( dex(ix)*0.5_wp * ( 1.0_wp - 2.0_wp * cim ) ) & ) & ) IF ( sterm == 0.0001_wp ) impe(k,i) = sk_p(k,j,i+1) * cim IF ( sterm == 0.9999_wp ) impe(k,i) = sk_p(k,j,i+1) * cim ENDIF IF ( sw(k,i-1) == 1.0_wp ) THEN snenn = sk_p(k,j,i) - sk_p(k,j,i-2) IF ( ABS( snenn ) < 1E-9_wp ) snenn = 1E-9_wp sterm = ( sk_p(k,j,i-1) - sk_p(k,j,i-2) ) / snenn sterm = MIN( sterm, 0.9999_wp ) sterm = MAX( sterm, 0.0001_wp ) ix = INT( sterm * 1000 ) + 1 cip = MAX( 0.0_wp, ( u(k,j,i) - u_gtrans ) * dt_3d * ddx ) ipme(k,i) = sk_p(k,j,i-2) * cip + snenn * ( & aex(ix) * cip + bex(ix) / dex(ix) * ( & eex(ix) - & EXP( dex(ix)*0.5_wp * ( 1.0_wp - 2.0_wp * cip ) ) & ) & ) IF ( sterm == 0.0001_wp ) ipme(k,i) = sk_p(k,j,i-1) * cip IF ( sterm == 0.9999_wp ) ipme(k,i) = sk_p(k,j,i-1) * cip ENDIF ENDDO ENDDO CALL cpu_log( log_point_s(12), 'advec_s_bc:exp', 'pause' ) ! !-- Prognostic equation DO i = nxl, nxr DO k = nzb+1, nzt fplus = ( 1.0_wp - sw(k,i) ) * ippb(k,i) + sw(k,i) * ippe(k,i) & - ( 1.0_wp - sw(k,i+1) ) * impb(k,i) - sw(k,i+1) * impe(k,i) fminus = ( 1.0_wp - sw(k,i-1) ) * ipmb(k,i) + sw(k,i-1) * ipme(k,i) & - ( 1.0_wp - sw(k,i) ) * immb(k,i) - sw(k,i) * imme(k,i) tendcy = fplus - fminus ! !-- Removed in order to optimize speed ! ffmax = MAX( ABS( fplus ), ABS( fminus ), 1E-35_wp ) ! IF ( ( ABS( tendcy ) / ffmax ) < 1E-7_wp ) tendcy = 0.0 ! !-- Density correction because of possible remaining divergences d_new = d(k,j,i) - ( u(k,j,i+1) - u(k,j,i) ) * dt_3d * ddx sk_p(k,j,i) = ( ( 1.0_wp + d(k,j,i) ) * sk_p(k,j,i) - tendcy ) / ( 1.0_wp + d_new ) d(k,j,i) = d_new ENDDO ENDDO ENDDO ! End of the advection in x-direction ! !-- Deallocate temporary arrays DEALLOCATE( a0, a1, a2, a12, a22, immb, imme, impb, impe, ipmb, ipme, ippb, ippe, m1, sw ) ! !-- Enlarge boundary of local array cyclically in y-direction #if defined( __parallel ) ngp = ( nzt - nzb + 6 ) * ( nyn - nys + 7 ) CALL MPI_TYPE_VECTOR( nxr-nxl+7, 3*(nzt-nzb+6), ngp, MPI_REAL, & type_xz_2, ierr ) CALL MPI_TYPE_COMMIT( type_xz_2, ierr ) ! !-- Send front boundary, receive rear boundary CALL cpu_log( log_point_s(11), 'advec_s_bc:sendrecv', 'continue' ) CALL MPI_SENDRECV( sk_p(nzb-2,nys,nxl-3), 1, type_xz_2, psouth, 0, & sk_p(nzb-2,nyn+1,nxl-3), 1, type_xz_2, pnorth, 0, & comm2d, status, ierr ) ! !-- Send rear boundary, receive front boundary CALL MPI_SENDRECV( sk_p(nzb-2,nyn-2,nxl-3), 1, type_xz_2, pnorth, 1, & sk_p(nzb-2,nys-3,nxl-3), 1, type_xz_2, psouth, 1, & comm2d, status, ierr ) CALL MPI_TYPE_FREE( type_xz_2, ierr ) CALL cpu_log( log_point_s(11), 'advec_s_bc:sendrecv', 'pause' ) #else DO i = nxl, nxr DO k = nzb+1, nzt sk_p(k,nys-1,i) = sk_p(k,nyn,i) sk_p(k,nys-2,i) = sk_p(k,nyn-1,i) sk_p(k,nys-3,i) = sk_p(k,nyn-2,i) sk_p(k,nyn+1,i) = sk_p(k,nys,i) sk_p(k,nyn+2,i) = sk_p(k,nys+1,i) sk_p(k,nyn+3,i) = sk_p(k,nys+2,i) ENDDO ENDDO #endif ! !-- Determine the maxima of the first and second derivative in y-direction fmax_l = 0.0_wp DO i = nxl, nxr DO j = nys, nyn DO k = nzb+1, nzt numera = ABS( sk_p(k,j+1,i) - 2.0_wp * sk_p(k,j,i) + sk_p(k,j-1,i) ) denomi = ABS( sk_p(k,j+1,i) - sk_p(k,j-1,i) ) fmax_l(1) = MAX( fmax_l(1) , numera ) fmax_l(2) = MAX( fmax_l(2) , denomi ) ENDDO ENDDO ENDDO #if defined( __parallel ) IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) CALL MPI_ALLREDUCE( fmax_l, fmax, 2, MPI_REAL, MPI_MAX, comm2d, ierr ) #else fmax = fmax_l #endif fmax = 0.04_wp * fmax ! !-- Allocate temporary arrays ALLOCATE( a0(nzb+1:nzt,nys-1:nyn+1), a1(nzb+1:nzt,nys-1:nyn+1), a2(nzb+1:nzt,nys-1:nyn+1),& a12(nzb+1:nzt,nys-1:nyn+1), a22(nzb+1:nzt,nys-1:nyn+1), & immb(nzb+1:nzt,nys-1:nyn+1), imme(nzb+1:nzt,nys-1:nyn+1), & impb(nzb+1:nzt,nys-1:nyn+1), impe(nzb+1:nzt,nys-1:nyn+1), & ipmb(nzb+1:nzt,nys-1:nyn+1), ipme(nzb+1:nzt,nys-1:nyn+1), & ippb(nzb+1:nzt,nys-1:nyn+1), ippe(nzb+1:nzt,nys-1:nyn+1), & m1(nzb+1:nzt,nys-2:nyn+2), sw(nzb+1:nzt,nys-1:nyn+1) & ) imme = 0.0_wp; impe = 0.0_wp; ipme = 0.0_wp; ippe = 0.0_wp DO i = nxl, nxr ! !-- Compute polynomial coefficients DO j = nys-1, nyn+1 DO k = nzb+1, nzt a12(k,j) = 0.5_wp * ( sk_p(k,j+1,i) - sk_p(k,j-1,i) ) a22(k,j) = 0.5_wp * ( sk_p(k,j+1,i) - 2.0_wp * sk_p(k,j,i) + sk_p(k,j-1,i) ) a0(k,j) = ( 9.0_wp * sk_p(k,j+2,i) - 116.0_wp * sk_p(k,j+1,i) & + 2134.0_wp * sk_p(k,j,i) - 116.0_wp * sk_p(k,j-1,i) & + 9.0_wp * sk_p(k,j-2,i) & ) * f1920 a1(k,j) = ( -5.0_wp * sk_p(k,j+2,i) + 34.0_wp * sk_p(k,j+1,i) & - 34.0_wp * sk_p(k,j-1,i) + 5.0_wp * sk_p(k,j-2,i) & ) * f48 a2(k,j) = ( -3.0_wp * sk_p(k,j+2,i) + 36.0_wp * sk_p(k,j+1,i) & - 66.0_wp * sk_p(k,j,i) + 36.0_wp * sk_p(k,j-1,i) & - 3.0_wp * sk_p(k,j-2,i) & ) * f48 ENDDO ENDDO ! !-- Fluxes using the Bott scheme DO j = nys, nyn DO k = nzb+1, nzt cip = MAX( 0.0_wp, ( v(k,j+1,i) - v_gtrans ) * dt_3d * ddy ) cim = -MIN( 0.0_wp, ( v(k,j+1,i) - v_gtrans ) * dt_3d * ddy ) cipf = 1.0_wp - 2.0_wp * cip cimf = 1.0_wp - 2.0_wp * cim ip = a0(k,j) * f2 * ( 1.0_wp - cipf ) & + a1(k,j) * f8 * ( 1.0_wp - cipf*cipf ) & + a2(k,j) * f24 * ( 1.0_wp - cipf*cipf*cipf ) im = a0(k,j+1) * f2 * ( 1.0_wp - cimf ) & - a1(k,j+1) * f8 * ( 1.0_wp - cimf*cimf ) & + a2(k,j+1) * f24 * ( 1.0_wp - cimf*cimf*cimf ) ip = MAX( ip, 0.0_wp ) im = MAX( im, 0.0_wp ) ippb(k,j) = ip * MIN( 1.0_wp, sk_p(k,j,i) / (ip+im+1E-15_wp) ) impb(k,j) = im * MIN( 1.0_wp, sk_p(k,j+1,i) / (ip+im+1E-15_wp) ) cip = MAX( 0.0_wp, ( v(k,j,i) - v_gtrans ) * dt_3d * ddy ) cim = -MIN( 0.0_wp, ( v(k,j,i) - v_gtrans ) * dt_3d * ddy ) cipf = 1.0_wp - 2.0_wp * cip cimf = 1.0_wp - 2.0_wp * cim ip = a0(k,j-1) * f2 * ( 1.0_wp - cipf ) & + a1(k,j-1) * f8 * ( 1.0_wp - cipf*cipf ) & + a2(k,j-1) * f24 * ( 1.0_wp - cipf*cipf*cipf ) im = a0(k,j) * f2 * ( 1.0_wp - cimf ) & - a1(k,j) * f8 * ( 1.0_wp - cimf*cimf ) & + a2(k,j) * f24 * ( 1.0_wp - cimf*cimf*cimf ) ip = MAX( ip, 0.0_wp ) im = MAX( im, 0.0_wp ) ipmb(k,j) = ip * MIN( 1.0_wp, sk_p(k,j-1,i) / (ip+im+1E-15_wp) ) immb(k,j) = im * MIN( 1.0_wp, sk_p(k,j,i) / (ip+im+1E-15_wp) ) ENDDO ENDDO ! !-- Compute monitor function m1 DO j = nys-2, nyn+2 DO k = nzb+1, nzt m1z = ABS( sk_p(k,j+1,i) - 2.0_wp * sk_p(k,j,i) + sk_p(k,j-1,i) ) m1n = ABS( sk_p(k,j+1,i) - sk_p(k,j-1,i) ) IF ( m1n /= 0.0_wp .AND. m1n >= m1z ) THEN m1(k,j) = m1z / m1n IF ( m1(k,j) /= 2.0_wp .AND. m1n < fmax(2) ) m1(k,j) = 0.0_wp ELSEIF ( m1n < m1z ) THEN m1(k,j) = -1.0_wp ELSE m1(k,j) = 0.0_wp ENDIF ENDDO ENDDO ! !-- Compute switch sw sw = 0.0_wp DO j = nys-1, nyn+1 DO k = nzb+1, nzt m2 = 2.0_wp * ABS( a1(k,j) - a12(k,j) ) / & MAX( ABS( a1(k,j) + a12(k,j) ), 1E-35_wp ) IF ( ABS( a1(k,j) + a12(k,j) ) < fmax(2) ) m2 = 0.0_wp m3 = 2.0_wp * ABS( a2(k,j) - a22(k,j) ) / & MAX( ABS( a2(k,j) + a22(k,j) ), 1E-35_wp ) IF ( ABS( a2(k,j) + a22(k,j) ) < fmax(1) ) m3 = 0.0_wp t1 = 0.35_wp t2 = 0.35_wp IF ( m1(k,j) == -1.0_wp ) t2 = 0.12_wp IF ( m1(k,j-1) == 1.0_wp .OR. m1(k,j) == 1.0_wp .OR. m1(k,j+1) == 1.0_wp .OR. & m2 > t2 .OR. m3 > t2 .OR. ( m1(k,j) > t1 .AND. m1(k,j-1) /= -1.0_wp .AND. & m1(k,j) /= -1.0_wp .AND. m1(k,j+1) /= -1.0_wp ) & ) sw(k,j) = 1.0_wp ENDDO ENDDO ! !-- Fluxes using exponential scheme CALL cpu_log( log_point_s(12), 'advec_s_bc:exp', 'continue' ) DO j = nys, nyn DO k = nzb+1, nzt IF ( sw(k,j) == 1.0_wp ) THEN snenn = sk_p(k,j+1,i) - sk_p(k,j-1,i) IF ( ABS( snenn ) < 1E-9_wp ) snenn = 1E-9_wp sterm = ( sk_p(k,j,i) - sk_p(k,j-1,i) ) / snenn sterm = MIN( sterm, 0.9999_wp ) sterm = MAX( sterm, 0.0001_wp ) ix = INT( sterm * 1000 ) + 1 cip = MAX( 0.0_wp, ( v(k,j+1,i) - v_gtrans ) * dt_3d * ddy ) ippe(k,j) = sk_p(k,j-1,i) * cip + snenn * ( & aex(ix) * cip + bex(ix) / dex(ix) * ( & eex(ix) - & EXP( dex(ix)*0.5_wp * ( 1.0_wp - 2.0_wp * cip ) ) & ) & ) IF ( sterm == 0.0001_wp ) ippe(k,j) = sk_p(k,j,i) * cip IF ( sterm == 0.9999_wp ) ippe(k,j) = sk_p(k,j,i) * cip snenn = sk_p(k,j-1,i) - sk_p(k,j+1,i) IF ( ABS( snenn ) < 1E-9_wp ) snenn = 1E-9_wp sterm = ( sk_p(k,j,i) - sk_p(k,j+1,i) ) / snenn sterm = MIN( sterm, 0.9999_wp ) sterm = MAX( sterm, 0.0001_wp ) ix = INT( sterm * 1000 ) + 1 cim = -MIN( 0.0_wp, ( v(k,j,i) - v_gtrans ) * dt_3d * ddy ) imme(k,j) = sk_p(k,j+1,i) * cim + snenn * ( & aex(ix) * cim + bex(ix) / dex(ix) * ( & eex(ix) - & EXP( dex(ix)*0.5_wp * ( 1.0_wp - 2.0_wp * cim ) ) & ) & ) IF ( sterm == 0.0001_wp ) imme(k,j) = sk_p(k,j,i) * cim IF ( sterm == 0.9999_wp ) imme(k,j) = sk_p(k,j,i) * cim ENDIF IF ( sw(k,j+1) == 1.0_wp ) THEN snenn = sk_p(k,j,i) - sk_p(k,j+2,i) IF ( ABS( snenn ) < 1E-9_wp ) snenn = 1E-9_wp sterm = ( sk_p(k,j+1,i) - sk_p(k,j+2,i) ) / snenn sterm = MIN( sterm, 0.9999_wp ) sterm = MAX( sterm, 0.0001_wp ) ix = INT( sterm * 1000 ) + 1 cim = -MIN( 0.0_wp, ( v(k,j+1,i) - v_gtrans ) * dt_3d * ddy ) impe(k,j) = sk_p(k,j+2,i) * cim + snenn * ( & aex(ix) * cim + bex(ix) / dex(ix) * ( & eex(ix) - & EXP( dex(ix)*0.5_wp * ( 1.0_wp - 2.0_wp * cim ) ) & ) & ) IF ( sterm == 0.0001_wp ) impe(k,j) = sk_p(k,j+1,i) * cim IF ( sterm == 0.9999_wp ) impe(k,j) = sk_p(k,j+1,i) * cim ENDIF IF ( sw(k,j-1) == 1.0_wp ) THEN snenn = sk_p(k,j,i) - sk_p(k,j-2,i) IF ( ABS( snenn ) < 1E-9_wp ) snenn = 1E-9_wp sterm = ( sk_p(k,j-1,i) - sk_p(k,j-2,i) ) / snenn sterm = MIN( sterm, 0.9999_wp ) sterm = MAX( sterm, 0.0001_wp ) ix = INT( sterm * 1000 ) + 1 cip = MAX( 0.0_wp, ( v(k,j,i) - v_gtrans ) * dt_3d * ddy ) ipme(k,j) = sk_p(k,j-2,i) * cip + snenn * ( & aex(ix) * cip + bex(ix) / dex(ix) * ( & eex(ix) - & EXP( dex(ix)*0.5_wp * ( 1.0_wp - 2.0_wp * cip ) ) & ) & ) IF ( sterm == 0.0001_wp ) ipme(k,j) = sk_p(k,j-1,i) * cip IF ( sterm == 0.9999_wp ) ipme(k,j) = sk_p(k,j-1,i) * cip ENDIF ENDDO ENDDO CALL cpu_log( log_point_s(12), 'advec_s_bc:exp', 'pause' ) ! !-- Prognostic equation DO j = nys, nyn DO k = nzb+1, nzt fplus = ( 1.0_wp - sw(k,j) ) * ippb(k,j) + sw(k,j) * ippe(k,j) & - ( 1.0_wp - sw(k,j+1) ) * impb(k,j) - sw(k,j+1) * impe(k,j) fminus = ( 1.0_wp - sw(k,j-1) ) * ipmb(k,j) + sw(k,j-1) * ipme(k,j) & - ( 1.0_wp - sw(k,j) ) * immb(k,j) - sw(k,j) * imme(k,j) tendcy = fplus - fminus ! !-- Removed in order to optimise speed ! ffmax = MAX( ABS( fplus ), ABS( fminus ), 1E-35_wp ) ! IF ( ( ABS( tendcy ) / ffmax ) < 1E-7_wp ) tendcy = 0.0 ! !-- Density correction because of possible remaining divergences d_new = d(k,j,i) - ( v(k,j+1,i) - v(k,j,i) ) * dt_3d * ddy sk_p(k,j,i) = ( ( 1.0_wp + d(k,j,i) ) * sk_p(k,j,i) - tendcy ) / ( 1.0_wp + d_new ) d(k,j,i) = d_new ENDDO ENDDO ENDDO ! End of the advection in y-direction CALL cpu_log( log_point_s(11), 'advec_s_bc:sendrecv', 'continue' ) CALL cpu_log( log_point_s(11), 'advec_s_bc:sendrecv', 'stop' ) ! !-- Deallocate temporary arrays DEALLOCATE( a0, a1, a2, a12, a22, immb, imme, impb, impe, ipmb, ipme, ippb, ippe, m1, sw ) ! !-- Initialise for the computation of heat fluxes (see below; required in !-- UP flow_statistics) IF ( sk_char == 'pt' ) sums_wsts_bc_l = 0.0_wp ! !-- Add top and bottom boundaries according to the relevant boundary conditions IF ( sk_char == 'pt' ) THEN ! !-- Temperature boundary condition at the bottom boundary IF ( ibc_pt_b == 0 ) THEN ! !-- Dirichlet (fixed surface temperature) DO i = nxl, nxr DO j = nys, nyn sk_p(nzb-1,j,i) = sk_p(nzb,j,i) sk_p(nzb-2,j,i) = sk_p(nzb,j,i) ENDDO ENDDO ELSE ! !-- Neumann (i.e. here zero gradient) DO i = nxl, nxr DO j = nys, nyn sk_p(nzb,j,i) = sk_p(nzb+1,j,i) sk_p(nzb-1,j,i) = sk_p(nzb,j,i) sk_p(nzb-2,j,i) = sk_p(nzb,j,i) ENDDO ENDDO ENDIF ! !-- Temperature boundary condition at the top boundary IF ( ibc_pt_t == 0 .OR. ibc_pt_t == 1 ) THEN ! !-- Dirichlet or Neumann (zero gradient) DO i = nxl, nxr DO j = nys, nyn sk_p(nzt+2,j,i) = sk_p(nzt+1,j,i) sk_p(nzt+3,j,i) = sk_p(nzt+1,j,i) ENDDO ENDDO ELSEIF ( ibc_pt_t == 2 ) THEN ! !-- Neumann: dzu(nzt+2:3) are not defined, dzu(nzt+1) is used instead DO i = nxl, nxr DO j = nys, nyn sk_p(nzt+2,j,i) = sk_p(nzt+1,j,i) + bc_pt_t_val * dzu(nzt+1) sk_p(nzt+3,j,i) = sk_p(nzt+2,j,i) + bc_pt_t_val * dzu(nzt+1) ENDDO ENDDO ENDIF ELSEIF ( sk_char == 'sa' ) THEN ! !-- Salinity boundary condition at the bottom boundary. !-- So far, always Neumann (i.e. here zero gradient) is used DO i = nxl, nxr DO j = nys, nyn sk_p(nzb,j,i) = sk_p(nzb+1,j,i) sk_p(nzb-1,j,i) = sk_p(nzb,j,i) sk_p(nzb-2,j,i) = sk_p(nzb,j,i) ENDDO ENDDO ! !-- Salinity boundary condition at the top boundary. !-- Dirichlet or Neumann (zero gradient) DO i = nxl, nxr DO j = nys, nyn sk_p(nzt+2,j,i) = sk_p(nzt+1,j,i) sk_p(nzt+3,j,i) = sk_p(nzt+1,j,i) ENDDO ENDDO ELSEIF ( sk_char == 'q' ) THEN ! !-- Specific humidity boundary condition at the bottom boundary. !-- Dirichlet (fixed surface humidity) or Neumann (i.e. zero gradient) DO i = nxl, nxr DO j = nys, nyn sk_p(nzb,j,i) = sk_p(nzb+1,j,i) sk_p(nzb-1,j,i) = sk_p(nzb,j,i) sk_p(nzb-2,j,i) = sk_p(nzb,j,i) ENDDO ENDDO ! !-- Specific humidity boundary condition at the top boundary IF ( ibc_q_t == 0 ) THEN ! !-- Dirichlet DO i = nxl, nxr DO j = nys, nyn sk_p(nzt+2,j,i) = sk_p(nzt+1,j,i) sk_p(nzt+3,j,i) = sk_p(nzt+1,j,i) ENDDO ENDDO ELSE ! !-- Neumann: dzu(nzt+2:3) are not defined, dzu(nzt+1) is used instead DO i = nxl, nxr DO j = nys, nyn sk_p(nzt+2,j,i) = sk_p(nzt+1,j,i) + bc_q_t_val * dzu(nzt+1) sk_p(nzt+3,j,i) = sk_p(nzt+2,j,i) + bc_q_t_val * dzu(nzt+1) ENDDO ENDDO ENDIF ELSEIF ( sk_char == 's' ) THEN ! !-- Specific scalar boundary condition at the bottom boundary. !-- Dirichlet (fixed surface humidity) or Neumann (i.e. zero gradient) DO i = nxl, nxr DO j = nys, nyn sk_p(nzb,j,i) = sk_p(nzb+1,j,i) sk_p(nzb-1,j,i) = sk_p(nzb,j,i) sk_p(nzb-2,j,i) = sk_p(nzb,j,i) ENDDO ENDDO ! !-- Specific scalar boundary condition at the top boundary IF ( ibc_s_t == 0 ) THEN ! !-- Dirichlet DO i = nxl, nxr DO j = nys, nyn sk_p(nzt+2,j,i) = sk_p(nzt+1,j,i) sk_p(nzt+3,j,i) = sk_p(nzt+1,j,i) ENDDO ENDDO ELSE ! !-- Neumann: dzu(nzt+2:3) are not defined, dzu(nzt+1) is used instead DO i = nxl, nxr DO j = nys, nyn sk_p(nzt+2,j,i) = sk_p(nzt+1,j,i) + bc_s_t_val * dzu(nzt+1) sk_p(nzt+3,j,i) = sk_p(nzt+2,j,i) + bc_s_t_val * dzu(nzt+1) ENDDO ENDDO ENDIF ! !-- Specific boundary condition for bulk cloud species at the bottom boundary. ELSEIF ( sk_char == 'qc' .OR. sk_char == 'qg' .OR. sk_char == 'qi' .OR. & sk_char == 'qr' .OR. sk_char == 'qs' .OR. sk_char == 'nc' .OR. & sk_char == 'ng' .OR. sk_char == 'ni' .OR. sk_char == 'nr' .OR. & sk_char == 'ns') THEN ! !-- Bulk species boundary condition at the bottom boundary: !-- Dirichlet (fixed mixing ratio or number concenctration). DO i = nxl, nxr DO j = nys, nyn sk_p(nzb,j,i) = sk_p(nzb+1,j,i) sk_p(nzb-1,j,i) = sk_p(nzb,j,i) sk_p(nzb-2,j,i) = sk_p(nzb,j,i) ENDDO ENDDO ! !-- Bulk species boundary condition at the top boundary: Dirichlet DO i = nxl, nxr DO j = nys, nyn sk_p(nzt+2,j,i) = sk_p(nzt+1,j,i) sk_p(nzt+3,j,i) = sk_p(nzt+1,j,i) ENDDO ENDDO ELSEIF ( sk_char == 'e' ) THEN ! !-- TKE boundary condition at bottom and top boundary (generally Neumann) DO i = nxl, nxr DO j = nys, nyn sk_p(nzb,j,i) = sk_p(nzb+1,j,i) sk_p(nzb-1,j,i) = sk_p(nzb,j,i) sk_p(nzb-2,j,i) = sk_p(nzb,j,i) sk_p(nzt+2,j,i) = sk_p(nzt+1,j,i) sk_p(nzt+3,j,i) = sk_p(nzt+1,j,i) ENDDO ENDDO ELSE WRITE( message_string, * ) 'no vertical boundary condition for variable "', sk_char, '"' CALL message( 'advec_s_bc', 'PA0158', 1, 2, 0, 6, 0 ) ENDIF ! !-- Determine the maxima of the first and second derivative in z-direction fmax_l = 0.0_wp DO i = nxl, nxr DO j = nys, nyn DO k = nzb, nzt+1 numera = ABS( sk_p(k+1,j,i) - 2.0_wp * sk_p(k,j,i) + sk_p(k-1,j,i) ) denomi = ABS( sk_p(k+1,j,i+1) - sk_p(k-1,j,i) ) fmax_l(1) = MAX( fmax_l(1) , numera ) fmax_l(2) = MAX( fmax_l(2) , denomi ) ENDDO ENDDO ENDDO #if defined( __parallel ) IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) CALL MPI_ALLREDUCE( fmax_l, fmax, 2, MPI_REAL, MPI_MAX, comm2d, ierr ) #else fmax = fmax_l #endif fmax = 0.04_wp * fmax ! !-- Allocate temporary arrays ALLOCATE( a0(nzb:nzt+1,nys:nyn), a1(nzb:nzt+1,nys:nyn), a2(nzb:nzt+1,nys:nyn), & a12(nzb:nzt+1,nys:nyn), a22(nzb:nzt+1,nys:nyn), immb(nzb+1:nzt,nys:nyn), & imme(nzb+1:nzt,nys:nyn), impb(nzb+1:nzt,nys:nyn), impe(nzb+1:nzt,nys:nyn), & ipmb(nzb+1:nzt,nys:nyn), ipme(nzb+1:nzt,nys:nyn), ippb(nzb+1:nzt,nys:nyn), & ippe(nzb+1:nzt,nys:nyn), m1(nzb-1:nzt+2,nys:nyn), sw(nzb:nzt+1,nys:nyn) & ) imme = 0.0_wp; impe = 0.0_wp; ipme = 0.0_wp; ippe = 0.0_wp DO i = nxl, nxr ! !-- Compute polynomial coefficients DO j = nys, nyn DO k = nzb, nzt+1 a12(k,j) = 0.5_wp * ( sk_p(k+1,j,i) - sk_p(k-1,j,i) ) a22(k,j) = 0.5_wp * ( sk_p(k+1,j,i) - 2.0_wp * sk_p(k,j,i) + sk_p(k-1,j,i) ) a0(k,j) = ( 9.0_wp * sk_p(k+2,j,i) - 116.0_wp * sk_p(k+1,j,i) & + 2134.0_wp * sk_p(k,j,i) - 116.0_wp * sk_p(k-1,j,i) & + 9.0_wp * sk_p(k-2,j,i) & ) * f1920 a1(k,j) = ( -5.0_wp * sk_p(k+2,j,i) + 34.0_wp * sk_p(k+1,j,i) & - 34.0_wp * sk_p(k-1,j,i) + 5.0_wp * sk_p(k-2,j,i) & ) * f48 a2(k,j) = ( -3.0_wp * sk_p(k+2,j,i) + 36.0_wp * sk_p(k+1,j,i) & - 66.0_wp * sk_p(k,j,i) + 36.0_wp * sk_p(k-1,j,i) & - 3.0_wp * sk_p(k-2,j,i) & ) * f48 ENDDO ENDDO ! !-- Fluxes using the Bott scheme DO j = nys, nyn DO k = nzb+1, nzt cip = MAX( 0.0_wp, w(k,j,i) * dt_3d * ddzw(k) ) cim = -MIN( 0.0_wp, w(k,j,i) * dt_3d * ddzw(k) ) cipf = 1.0_wp - 2.0_wp * cip cimf = 1.0_wp - 2.0_wp * cim ip = a0(k,j) * f2 * ( 1.0_wp - cipf ) & + a1(k,j) * f8 * ( 1.0_wp - cipf*cipf ) & + a2(k,j) * f24 * ( 1.0_wp - cipf*cipf*cipf ) im = a0(k+1,j) * f2 * ( 1.0_wp - cimf ) & - a1(k+1,j) * f8 * ( 1.0_wp - cimf*cimf ) & + a2(k+1,j) * f24 * ( 1.0_wp - cimf*cimf*cimf ) ip = MAX( ip, 0.0_wp ) im = MAX( im, 0.0_wp ) ippb(k,j) = ip * MIN( 1.0_wp, sk_p(k,j,i) / (ip+im+1E-15_wp) ) impb(k,j) = im * MIN( 1.0_wp, sk_p(k+1,j,i) / (ip+im+1E-15_wp) ) cip = MAX( 0.0_wp, w(k-1,j,i) * dt_3d * ddzw(k) ) cim = -MIN( 0.0_wp, w(k-1,j,i) * dt_3d * ddzw(k) ) cipf = 1.0_wp - 2.0_wp * cip cimf = 1.0_wp - 2.0_wp * cim ip = a0(k-1,j) * f2 * ( 1.0_wp - cipf ) & + a1(k-1,j) * f8 * ( 1.0_wp - cipf*cipf ) & + a2(k-1,j) * f24 * ( 1.0_wp - cipf*cipf*cipf ) im = a0(k,j) * f2 * ( 1.0_wp - cimf ) & - a1(k,j) * f8 * ( 1.0_wp - cimf*cimf ) & + a2(k,j) * f24 * ( 1.0_wp - cimf*cimf*cimf ) ip = MAX( ip, 0.0_wp ) im = MAX( im, 0.0_wp ) ipmb(k,j) = ip * MIN( 1.0_wp, sk_p(k-1,j,i) / (ip+im+1E-15_wp) ) immb(k,j) = im * MIN( 1.0_wp, sk_p(k,j,i) / (ip+im+1E-15_wp) ) ENDDO ENDDO ! !-- Compute monitor function m1 DO j = nys, nyn DO k = nzb-1, nzt+2 m1z = ABS( sk_p(k+1,j,i) - 2.0_wp * sk_p(k,j,i) + sk_p(k-1,j,i) ) m1n = ABS( sk_p(k+1,j,i) - sk_p(k-1,j,i) ) IF ( m1n /= 0.0_wp .AND. m1n >= m1z ) THEN m1(k,j) = m1z / m1n IF ( m1(k,j) /= 2.0_wp .AND. m1n < fmax(2) ) m1(k,j) = 0.0_wp ELSEIF ( m1n < m1z ) THEN m1(k,j) = -1.0_wp ELSE m1(k,j) = 0.0_wp ENDIF ENDDO ENDDO ! !-- Compute switch sw sw = 0.0_wp DO j = nys, nyn DO k = nzb, nzt+1 m2 = 2.0_wp * ABS( a1(k,j) - a12(k,j) ) / & MAX( ABS( a1(k,j) + a12(k,j) ), 1E-35_wp ) IF ( ABS( a1(k,j) + a12(k,j) ) < fmax(2) ) m2 = 0.0_wp m3 = 2.0_wp * ABS( a2(k,j) - a22(k,j) ) / & MAX( ABS( a2(k,j) + a22(k,j) ), 1E-35_wp ) IF ( ABS( a2(k,j) + a22(k,j) ) < fmax(1) ) m3 = 0.0_wp t1 = 0.35_wp t2 = 0.35_wp IF ( m1(k,j) == -1.0_wp ) t2 = 0.12_wp IF ( m1(k-1,j) == 1.0_wp .OR. m1(k,j) == 1.0_wp .OR. m1(k+1,j) == 1.0_wp .OR. & m2 > t2 .OR. m3 > t2 .OR. ( m1(k,j) > t1 .AND. m1(k-1,j) /= -1.0_wp .AND.& m1(k,j) /= -1.0_wp .AND. m1(k+1,j) /= -1.0_wp ) & ) sw(k,j) = 1.0_wp ENDDO ENDDO ! !-- Fluxes using exponential scheme CALL cpu_log( log_point_s(12), 'advec_s_bc:exp', 'continue' ) DO j = nys, nyn DO k = nzb+1, nzt IF ( sw(k,j) == 1.0_wp ) THEN snenn = sk_p(k+1,j,i) - sk_p(k-1,j,i) IF ( ABS( snenn ) < 1E-9_wp ) snenn = 1E-9_wp sterm = ( sk_p(k,j,i) - sk_p(k-1,j,i) ) / snenn sterm = MIN( sterm, 0.9999_wp ) sterm = MAX( sterm, 0.0001_wp ) ix = INT( sterm * 1000 ) + 1 cip = MAX( 0.0_wp, w(k,j,i) * dt_3d * ddzw(k) ) ippe(k,j) = sk_p(k-1,j,i) * cip + snenn * ( & aex(ix) * cip + bex(ix) / dex(ix) * ( & eex(ix) - & EXP( dex(ix)*0.5_wp * ( 1.0_wp - 2.0_wp * cip ) ) & ) & ) IF ( sterm == 0.0001_wp ) ippe(k,j) = sk_p(k,j,i) * cip IF ( sterm == 0.9999_wp ) ippe(k,j) = sk_p(k,j,i) * cip snenn = sk_p(k-1,j,i) - sk_p(k+1,j,i) IF ( ABS( snenn ) < 1E-9_wp ) snenn = 1E-9_wp sterm = ( sk_p(k,j,i) - sk_p(k+1,j,i) ) / snenn sterm = MIN( sterm, 0.9999_wp ) sterm = MAX( sterm, 0.0001_wp ) ix = INT( sterm * 1000 ) + 1 cim = -MIN( 0.0_wp, w(k-1,j,i) * dt_3d * ddzw(k) ) imme(k,j) = sk_p(k+1,j,i) * cim + snenn * ( & aex(ix) * cim + bex(ix) / dex(ix) * ( & eex(ix) - & EXP( dex(ix)*0.5_wp * ( 1.0_wp - 2.0_wp * cim ) ) & ) & ) IF ( sterm == 0.0001_wp ) imme(k,j) = sk_p(k,j,i) * cim IF ( sterm == 0.9999_wp ) imme(k,j) = sk_p(k,j,i) * cim ENDIF IF ( sw(k+1,j) == 1.0_wp ) THEN snenn = sk_p(k,j,i) - sk_p(k+2,j,i) IF ( ABS( snenn ) < 1E-9_wp ) snenn = 1E-9_wp sterm = ( sk_p(k+1,j,i) - sk_p(k+2,j,i) ) / snenn sterm = MIN( sterm, 0.9999_wp ) sterm = MAX( sterm, 0.0001_wp ) ix = INT( sterm * 1000 ) + 1 cim = -MIN( 0.0_wp, w(k,j,i) * dt_3d * ddzw(k) ) impe(k,j) = sk_p(k+2,j,i) * cim + snenn * ( & aex(ix) * cim + bex(ix) / dex(ix) * ( & eex(ix) - & EXP( dex(ix)*0.5_wp * ( 1.0_wp - 2.0_wp * cim ) ) & ) & ) IF ( sterm == 0.0001_wp ) impe(k,j) = sk_p(k+1,j,i) * cim IF ( sterm == 0.9999_wp ) impe(k,j) = sk_p(k+1,j,i) * cim ENDIF IF ( sw(k-1,j) == 1.0_wp ) THEN snenn = sk_p(k,j,i) - sk_p(k-2,j,i) IF ( ABS( snenn ) < 1E-9_wp ) snenn = 1E-9_wp sterm = ( sk_p(k-1,j,i) - sk_p(k-2,j,i) ) / snenn sterm = MIN( sterm, 0.9999_wp ) sterm = MAX( sterm, 0.0001_wp ) ix = INT( sterm * 1000 ) + 1 cip = MAX( 0.0_wp, w(k-1,j,i) * dt_3d * ddzw(k) ) ipme(k,j) = sk_p(k-2,j,i) * cip + snenn * ( & aex(ix) * cip + bex(ix) / dex(ix) * ( & eex(ix) - & EXP( dex(ix)*0.5_wp * ( 1.0_wp - 2.0_wp * cip ) ) & ) & ) IF ( sterm == 0.0001_wp ) ipme(k,j) = sk_p(k-1,j,i) * cip IF ( sterm == 0.9999_wp ) ipme(k,j) = sk_p(k-1,j,i) * cip ENDIF ENDDO ENDDO CALL cpu_log( log_point_s(12), 'advec_s_bc:exp', 'pause' ) ! !-- Prognostic equation DO j = nys, nyn DO k = nzb+1, nzt fplus = ( 1.0_wp - sw(k,j) ) * ippb(k,j) + sw(k,j) * ippe(k,j) & - ( 1.0_wp - sw(k+1,j) ) * impb(k,j) - sw(k+1,j) * impe(k,j) fminus = ( 1.0_wp - sw(k-1,j) ) * ipmb(k,j) + sw(k-1,j) * ipme(k,j) & - ( 1.0_wp - sw(k,j) ) * immb(k,j) - sw(k,j) * imme(k,j) tendcy = fplus - fminus ! !-- Removed in order to optimise speed ! ffmax = MAX( ABS( fplus ), ABS( fminus ), 1E-35_wp ) ! IF ( ( ABS( tendcy ) / ffmax ) < 1E-7_wp ) tendcy = 0.0 ! !-- Density correction because of possible remaining divergences d_new = d(k,j,i) - ( w(k,j,i) - w(k-1,j,i) ) * dt_3d * ddzw(k) sk_p(k,j,i) = ( ( 1.0_wp + d(k,j,i) ) * sk_p(k,j,i) - tendcy ) / ( 1.0_wp + d_new ) ! !-- Store heat flux for subsequent statistics output. !-- Array m1 is here used as temporary storage m1(k,j) = fplus / dt_3d * dzw(k) ENDDO ENDDO ! !-- Sum up heat flux in order to obtain horizontal averages IF ( sk_char == 'pt' ) THEN DO sr = 0, statistic_regions DO j = nys, nyn DO k = nzb+1, nzt sums_wsts_bc_l(k,sr) = sums_wsts_bc_l(k,sr) + m1(k,j) * rmask(j,i,sr) ENDDO ENDDO ENDDO ENDIF ENDDO ! !-- End of the advection in z-direction CALL cpu_log( log_point_s(12), 'advec_s_bc:exp', 'continue' ) CALL cpu_log( log_point_s(12), 'advec_s_bc:exp', 'stop' ) ! !-- Deallocate temporary arrays DEALLOCATE( a0, a1, a2, a12, a22, immb, imme, impb, impe, ipmb, ipme, ippb, ippe, m1, sw ) ! !-- Store results as tendency and deallocate local array DO i = nxl, nxr DO j = nys, nyn DO k = nzb+1, nzt tend(k,j,i) = tend(k,j,i) + ( sk_p(k,j,i) - sk(k,j,i) ) / dt_3d ENDDO ENDDO ENDDO DEALLOCATE( sk_p ) END SUBROUTINE advec_s_bc END MODULE advec_s_bc_mod