[1682] | 1 | !> @file init_slope.f90 |
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[4648] | 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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[4648] | 5 | ! PALM is free software: you can redistribute it and/or modify it under the terms of the GNU General |
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| 6 | ! Public License as published by the Free Software Foundation, either version 3 of the License, or |
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| 7 | ! (at your option) any later version. |
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[1036] | 8 | ! |
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[4648] | 9 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the |
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| 10 | ! implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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| 11 | ! Public License for more details. |
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[1036] | 12 | ! |
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[4648] | 13 | ! You should have received a copy of the GNU General Public License along with PALM. If not, see |
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| 14 | ! <http://www.gnu.org/licenses/>. |
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[1036] | 15 | ! |
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[4828] | 16 | ! Copyright 1997-2021 Leibniz Universitaet Hannover |
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[4648] | 17 | !--------------------------------------------------------------------------------------------------! |
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[1036] | 18 | ! |
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[484] | 19 | ! Current revisions: |
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[1] | 20 | ! ----------------- |
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[4648] | 21 | ! |
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| 22 | ! |
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[1321] | 23 | ! Former revisions: |
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| 24 | ! ----------------- |
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| 25 | ! $Id: init_slope.f90 4828 2021-01-05 11:21:41Z moh.hefny $ |
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[4648] | 26 | ! file re-formatted to follow the PALM coding standard |
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| 27 | ! |
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| 28 | ! 4360 2020-01-07 11:25:50Z suehring |
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[4182] | 29 | ! Corrected "Former revisions" section |
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[4648] | 30 | ! |
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[4182] | 31 | ! 3655 2019-01-07 16:51:22Z knoop |
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[3274] | 32 | ! Modularization of all bulk cloud physics code components |
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[1321] | 33 | ! |
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[4182] | 34 | ! Revision 1.1 2000/04/27 07:06:24 raasch |
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| 35 | ! Initial revision |
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| 36 | ! |
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| 37 | ! |
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[1] | 38 | ! Description: |
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| 39 | ! ------------ |
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[4648] | 40 | !> Initialization of the temperature field and other variables used in case of a sloping surface. |
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[1682] | 41 | !> @note when a sloping surface is used, only one constant temperature |
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| 42 | !> gradient is allowed! |
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[4648] | 43 | !--------------------------------------------------------------------------------------------------! |
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[1682] | 44 | SUBROUTINE init_slope |
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[1] | 45 | |
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[4648] | 46 | |
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| 47 | USE arrays_3d, & |
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[1320] | 48 | ONLY: pt, pt_init, pt_slope_ref, zu |
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[4648] | 49 | |
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| 50 | USE basic_constants_and_equations_mod, & |
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[1320] | 51 | ONLY: pi |
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[4648] | 52 | |
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| 53 | USE control_parameters, & |
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| 54 | ONLY: alpha_surface, initializing_actions, pt_slope_offset, pt_surface, & |
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| 55 | pt_vertical_gradient, sin_alpha_surface |
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| 56 | |
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| 57 | USE grid_variables, & |
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[1320] | 58 | ONLY: dx |
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[4648] | 59 | |
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| 60 | USE indices, & |
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[1320] | 61 | ONLY: ngp_2dh, nx, nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzt |
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[4648] | 62 | |
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[1320] | 63 | USE kinds |
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| 64 | |
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[1] | 65 | USE pegrid |
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| 66 | |
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[1320] | 67 | |
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[1] | 68 | IMPLICIT NONE |
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| 69 | |
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[1682] | 70 | INTEGER(iwp) :: i !< |
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| 71 | INTEGER(iwp) :: j !< |
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| 72 | INTEGER(iwp) :: k !< |
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[4648] | 73 | |
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[1682] | 74 | REAL(wp) :: alpha !< |
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| 75 | REAL(wp) :: height !< |
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| 76 | REAL(wp) :: pt_value !< |
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| 77 | REAL(wp) :: radius !< |
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[4648] | 78 | |
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[1682] | 79 | REAL(wp), DIMENSION(:), ALLOCATABLE :: pt_init_local !< |
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[1] | 80 | |
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| 81 | ! |
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| 82 | !-- Calculate reference temperature field needed for computing buoyancy |
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[667] | 83 | ALLOCATE( pt_slope_ref(nzb:nzt+1,nxlg:nxrg) ) |
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[1] | 84 | |
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[667] | 85 | DO i = nxlg, nxrg |
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[1] | 86 | DO k = nzb, nzt+1 |
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| 87 | |
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| 88 | ! |
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[4648] | 89 | !-- Compute height of grid-point relative to lower left corner of the total domain. |
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| 90 | !-- First compute the distance between the actual grid point and the lower left corner as well |
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| 91 | !-- as the angle between the line connecting these points and the bottom of the model. |
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[1] | 92 | IF ( k /= nzb ) THEN |
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| 93 | radius = SQRT( ( i * dx )**2 + zu(k)**2 ) |
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| 94 | height = zu(k) |
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| 95 | ELSE |
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| 96 | radius = SQRT( ( i * dx )**2 ) |
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[1353] | 97 | height = 0.0_wp |
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[1] | 98 | ENDIF |
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[1353] | 99 | IF ( radius /= 0.0_wp ) THEN |
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[1] | 100 | alpha = ASIN( height / radius ) |
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| 101 | ELSE |
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[1353] | 102 | alpha = 0.0_wp |
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[1] | 103 | ENDIF |
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| 104 | ! |
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| 105 | !-- Compute temperatures in the rotated coordinate system |
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[1322] | 106 | alpha = alpha + alpha_surface / 180.0_wp * pi |
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[4648] | 107 | pt_value = pt_surface + radius * SIN( alpha ) * pt_vertical_gradient(1) / 100.0_wp |
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[1] | 108 | pt_slope_ref(k,i) = pt_value |
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[4648] | 109 | ENDDO |
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[1] | 110 | ENDDO |
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| 111 | |
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| 112 | ! |
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[4648] | 113 | !-- Temperature difference between left and right boundary of the total domain, used for the cyclic |
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| 114 | !-- boundary in x-direction |
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| 115 | pt_slope_offset = (nx+1) * dx * sin_alpha_surface * pt_vertical_gradient(1) / 100.0_wp |
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[1] | 116 | |
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| 117 | |
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| 118 | ! |
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| 119 | !-- Following action must only be executed for initial runs |
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| 120 | IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN |
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| 121 | ! |
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| 122 | !-- Set initial temperature equal to the reference temperature field |
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[667] | 123 | DO j = nysg, nyng |
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[1] | 124 | pt(:,j,:) = pt_slope_ref |
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| 125 | ENDDO |
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| 126 | |
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| 127 | ! |
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[4648] | 128 | !-- Recompute the mean initial temperature profile (mean along x-direction of the rotated |
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| 129 | !-- coordinate system) |
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[1] | 130 | ALLOCATE( pt_init_local(nzb:nzt+1) ) |
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[1353] | 131 | pt_init_local = 0.0_wp |
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[1] | 132 | DO i = nxl, nxr |
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| 133 | DO j = nys, nyn |
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| 134 | DO k = nzb, nzt+1 |
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| 135 | pt_init_local(k) = pt_init_local(k) + pt(k,j,i) |
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| 136 | ENDDO |
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| 137 | ENDDO |
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[622] | 138 | ENDDO |
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[1] | 139 | |
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| 140 | #if defined( __parallel ) |
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[622] | 141 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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[4648] | 142 | CALL MPI_ALLREDUCE( pt_init_local, pt_init, nzt+2-nzb, MPI_REAL, MPI_SUM, comm2d, ierr ) |
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[1] | 143 | #else |
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[622] | 144 | pt_init = pt_init_local |
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[1] | 145 | #endif |
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| 146 | |
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[622] | 147 | pt_init = pt_init / ngp_2dh(0) |
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| 148 | DEALLOCATE( pt_init_local ) |
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[1] | 149 | |
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[622] | 150 | ENDIF |
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[1] | 151 | |
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| 152 | END SUBROUTINE init_slope |
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