[1682] | 1 | !> @file init_slope.f90 |
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[2000] | 2 | !------------------------------------------------------------------------------! |
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[2696] | 3 | ! This file is part of the PALM model system. |
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[1036] | 4 | ! |
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[2000] | 5 | ! PALM is free software: you can redistribute it and/or modify it under the |
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| 6 | ! terms of the GNU General Public License as published by the Free Software |
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| 7 | ! Foundation, either version 3 of the License, or (at your option) any later |
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| 8 | ! version. |
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[1036] | 9 | ! |
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| 10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 13 | ! |
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| 14 | ! You should have received a copy of the GNU General Public License along with |
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| 15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 16 | ! |
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[3655] | 17 | ! Copyright 1997-2019 Leibniz Universitaet Hannover |
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[2000] | 18 | !------------------------------------------------------------------------------! |
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[1036] | 19 | ! |
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[484] | 20 | ! Current revisions: |
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[1] | 21 | ! ----------------- |
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[1354] | 22 | ! |
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[2001] | 23 | ! |
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[1321] | 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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| 26 | ! $Id: init_slope.f90 4182 2019-08-22 15:20:23Z resler $ |
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[4182] | 27 | ! Corrected "Former revisions" section |
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| 28 | ! |
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| 29 | ! 3655 2019-01-07 16:51:22Z knoop |
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[3274] | 30 | ! Modularization of all bulk cloud physics code components |
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[1321] | 31 | ! |
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[4182] | 32 | ! Revision 1.1 2000/04/27 07:06:24 raasch |
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| 33 | ! Initial revision |
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| 34 | ! |
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| 35 | ! |
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[1] | 36 | ! Description: |
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| 37 | ! ------------ |
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[1682] | 38 | !> Initialization of the temperature field and other variables used in case |
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| 39 | !> of a sloping surface. |
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| 40 | !> @note when a sloping surface is used, only one constant temperature |
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| 41 | !> gradient is allowed! |
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[3] | 42 | !------------------------------------------------------------------------------! |
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[1682] | 43 | SUBROUTINE init_slope |
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| 44 | |
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[1] | 45 | |
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[1320] | 46 | USE arrays_3d, & |
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| 47 | ONLY: pt, pt_init, pt_slope_ref, zu |
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| 48 | |
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[3274] | 49 | USE basic_constants_and_equations_mod, & |
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[1320] | 50 | ONLY: pi |
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| 51 | |
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| 52 | USE control_parameters, & |
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| 53 | ONLY: alpha_surface, initializing_actions, pt_slope_offset, & |
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| 54 | pt_surface, pt_vertical_gradient, sin_alpha_surface |
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| 55 | |
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| 56 | USE grid_variables, & |
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| 57 | ONLY: dx |
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| 58 | |
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| 59 | USE indices, & |
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| 60 | ONLY: ngp_2dh, nx, nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzt |
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| 61 | |
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| 62 | USE kinds |
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| 63 | |
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[1] | 64 | USE pegrid |
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| 65 | |
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[1320] | 66 | |
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[1] | 67 | IMPLICIT NONE |
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| 68 | |
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[1682] | 69 | INTEGER(iwp) :: i !< |
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| 70 | INTEGER(iwp) :: j !< |
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| 71 | INTEGER(iwp) :: k !< |
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[1320] | 72 | |
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[1682] | 73 | REAL(wp) :: alpha !< |
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| 74 | REAL(wp) :: height !< |
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| 75 | REAL(wp) :: pt_value !< |
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| 76 | REAL(wp) :: radius !< |
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[1320] | 77 | |
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[1682] | 78 | REAL(wp), DIMENSION(:), ALLOCATABLE :: pt_init_local !< |
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[1] | 79 | |
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| 80 | ! |
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| 81 | !-- Calculate reference temperature field needed for computing buoyancy |
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[667] | 82 | ALLOCATE( pt_slope_ref(nzb:nzt+1,nxlg:nxrg) ) |
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[1] | 83 | |
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[667] | 84 | DO i = nxlg, nxrg |
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[1] | 85 | DO k = nzb, nzt+1 |
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| 86 | |
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| 87 | ! |
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| 88 | !-- Compute height of grid-point relative to lower left corner of |
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| 89 | !-- the total domain. |
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| 90 | !-- First compute the distance between the actual grid point and the |
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| 91 | !-- lower left corner as well as the angle between the line connecting |
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| 92 | !-- these points and the bottom of the model. |
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| 93 | IF ( k /= nzb ) THEN |
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| 94 | radius = SQRT( ( i * dx )**2 + zu(k)**2 ) |
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| 95 | height = zu(k) |
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| 96 | ELSE |
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| 97 | radius = SQRT( ( i * dx )**2 ) |
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[1353] | 98 | height = 0.0_wp |
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[1] | 99 | ENDIF |
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[1353] | 100 | IF ( radius /= 0.0_wp ) THEN |
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[1] | 101 | alpha = ASIN( height / radius ) |
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| 102 | ELSE |
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[1353] | 103 | alpha = 0.0_wp |
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[1] | 104 | ENDIF |
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| 105 | ! |
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| 106 | !-- Compute temperatures in the rotated coordinate system |
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[1322] | 107 | alpha = alpha + alpha_surface / 180.0_wp * pi |
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[1] | 108 | pt_value = pt_surface + radius * SIN( alpha ) * & |
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[1322] | 109 | pt_vertical_gradient(1) / 100.0_wp |
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[1] | 110 | pt_slope_ref(k,i) = pt_value |
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| 111 | ENDDO |
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| 112 | ENDDO |
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| 113 | |
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| 114 | ! |
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| 115 | !-- Temperature difference between left and right boundary of the total domain, |
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| 116 | !-- used for the cyclic boundary in x-direction |
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| 117 | pt_slope_offset = (nx+1) * dx * sin_alpha_surface * & |
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[1322] | 118 | pt_vertical_gradient(1) / 100.0_wp |
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[1] | 119 | |
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| 120 | |
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| 121 | ! |
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| 122 | !-- Following action must only be executed for initial runs |
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| 123 | IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN |
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| 124 | ! |
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| 125 | !-- Set initial temperature equal to the reference temperature field |
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[667] | 126 | DO j = nysg, nyng |
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[1] | 127 | pt(:,j,:) = pt_slope_ref |
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| 128 | ENDDO |
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| 129 | |
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| 130 | ! |
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| 131 | !-- Recompute the mean initial temperature profile (mean along x-direction of |
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| 132 | !-- the rotated coordinate system) |
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| 133 | ALLOCATE( pt_init_local(nzb:nzt+1) ) |
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[1353] | 134 | pt_init_local = 0.0_wp |
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[1] | 135 | DO i = nxl, nxr |
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| 136 | DO j = nys, nyn |
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| 137 | DO k = nzb, nzt+1 |
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| 138 | pt_init_local(k) = pt_init_local(k) + pt(k,j,i) |
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| 139 | ENDDO |
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| 140 | ENDDO |
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[622] | 141 | ENDDO |
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[1] | 142 | |
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| 143 | #if defined( __parallel ) |
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[622] | 144 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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| 145 | CALL MPI_ALLREDUCE( pt_init_local, pt_init, nzt+2-nzb, MPI_REAL, & |
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| 146 | MPI_SUM, comm2d, ierr ) |
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[1] | 147 | #else |
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[622] | 148 | pt_init = pt_init_local |
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[1] | 149 | #endif |
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| 150 | |
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[622] | 151 | pt_init = pt_init / ngp_2dh(0) |
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| 152 | DEALLOCATE( pt_init_local ) |
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[1] | 153 | |
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[622] | 154 | ENDIF |
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[1] | 155 | |
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| 156 | END SUBROUTINE init_slope |
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