[1] | 1 | SUBROUTINE init_1d_model |
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| 2 | |
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| 3 | !------------------------------------------------------------------------------! |
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[254] | 4 | ! Current revisions: |
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[1] | 5 | ! ----------------- |
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[392] | 6 | ! |
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[1] | 7 | ! |
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| 8 | ! Former revisions: |
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| 9 | ! ----------------- |
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[3] | 10 | ! $Id: init_1d_model.f90 392 2009-09-24 10:39:14Z heinze $ |
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[77] | 11 | ! |
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[392] | 12 | ! 254 2009-03-05 15:33:42Z heinze |
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| 13 | ! Output of messages replaced by message handling routine. |
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| 14 | ! |
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[198] | 15 | ! 184 2008-08-04 15:53:39Z letzel |
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| 16 | ! provisional solution for run_control_1d output: add 'CALL check_open( 15 )' |
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| 17 | ! |
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[139] | 18 | ! 135 2007-11-22 12:24:23Z raasch |
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| 19 | ! Bugfix: absolute value of f must be used when calculating the Blackadar |
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| 20 | ! mixing length |
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| 21 | ! |
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[83] | 22 | ! 82 2007-04-16 15:40:52Z raasch |
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| 23 | ! Preprocessor strings for different linux clusters changed to "lc", |
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| 24 | ! routine local_flush is used for buffer flushing |
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| 25 | ! |
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[77] | 26 | ! 75 2007-03-22 09:54:05Z raasch |
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| 27 | ! Bugfix: preset of tendencies te_em, te_um, te_vm, |
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| 28 | ! moisture renamed humidity |
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| 29 | ! |
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[3] | 30 | ! RCS Log replace by Id keyword, revision history cleaned up |
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| 31 | ! |
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[1] | 32 | ! Revision 1.21 2006/06/02 15:19:57 raasch |
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| 33 | ! cpp-directives extended for lctit |
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| 34 | ! |
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| 35 | ! Revision 1.1 1998/03/09 16:22:10 raasch |
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| 36 | ! Initial revision |
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| 37 | ! |
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| 38 | ! |
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| 39 | ! Description: |
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| 40 | ! ------------ |
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| 41 | ! 1D-model to initialize the 3D-arrays. |
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| 42 | ! The temperature profile is set as steady and a corresponding steady solution |
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| 43 | ! of the wind profile is being computed. |
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| 44 | ! All subroutines required can be found within this file. |
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| 45 | !------------------------------------------------------------------------------! |
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| 46 | |
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| 47 | USE arrays_3d |
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| 48 | USE indices |
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| 49 | USE model_1d |
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| 50 | USE control_parameters |
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| 51 | |
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| 52 | IMPLICIT NONE |
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| 53 | |
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| 54 | CHARACTER (LEN=9) :: time_to_string |
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| 55 | INTEGER :: k |
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| 56 | REAL :: lambda |
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| 57 | |
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| 58 | ! |
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| 59 | !-- Allocate required 1D-arrays |
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| 60 | ALLOCATE( e1d(nzb:nzt+1), e1d_m(nzb:nzt+1), e1d_p(nzb:nzt+1), & |
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| 61 | kh1d(nzb:nzt+1), kh1d_m(nzb:nzt+1), km1d(nzb:nzt+1), & |
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| 62 | km1d_m(nzb:nzt+1), l_black(nzb:nzt+1), l1d(nzb:nzt+1), & |
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| 63 | l1d_m(nzb:nzt+1), rif1d(nzb:nzt+1), te_e(nzb:nzt+1), & |
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| 64 | te_em(nzb:nzt+1), te_u(nzb:nzt+1), te_um(nzb:nzt+1), & |
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| 65 | te_v(nzb:nzt+1), te_vm(nzb:nzt+1), u1d(nzb:nzt+1), & |
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| 66 | u1d_m(nzb:nzt+1), u1d_p(nzb:nzt+1), v1d(nzb:nzt+1), & |
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| 67 | v1d_m(nzb:nzt+1), v1d_p(nzb:nzt+1) ) |
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| 68 | |
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| 69 | ! |
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| 70 | !-- Initialize arrays |
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| 71 | IF ( constant_diffusion ) THEN |
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| 72 | km1d = km_constant |
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| 73 | km1d_m = km_constant |
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| 74 | kh1d = km_constant / prandtl_number |
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| 75 | kh1d_m = km_constant / prandtl_number |
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| 76 | ELSE |
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| 77 | e1d = 0.0; e1d_m = 0.0; e1d_p = 0.0 |
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| 78 | kh1d = 0.0; kh1d_m = 0.0; km1d = 0.0; km1d_m = 0.0 |
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| 79 | rif1d = 0.0 |
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| 80 | ! |
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| 81 | !-- Compute the mixing length |
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| 82 | l_black(nzb) = 0.0 |
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| 83 | |
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| 84 | IF ( TRIM( mixing_length_1d ) == 'blackadar' ) THEN |
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| 85 | ! |
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| 86 | !-- Blackadar mixing length |
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| 87 | IF ( f /= 0.0 ) THEN |
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[135] | 88 | lambda = 2.7E-4 * SQRT( ug(nzt+1)**2 + vg(nzt+1)**2 ) / & |
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| 89 | ABS( f ) + 1E-10 |
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[1] | 90 | ELSE |
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| 91 | lambda = 30.0 |
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| 92 | ENDIF |
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| 93 | |
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| 94 | DO k = nzb+1, nzt+1 |
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| 95 | l_black(k) = kappa * zu(k) / ( 1.0 + kappa * zu(k) / lambda ) |
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| 96 | ENDDO |
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| 97 | |
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| 98 | ELSEIF ( TRIM( mixing_length_1d ) == 'as_in_3d_model' ) THEN |
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| 99 | ! |
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| 100 | !-- Use the same mixing length as in 3D model |
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| 101 | l_black(1:nzt) = l_grid |
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| 102 | l_black(nzt+1) = l_black(nzt) |
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| 103 | |
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| 104 | ENDIF |
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| 105 | |
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| 106 | ! |
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| 107 | !-- Adjust mixing length to the prandtl mixing length (within the prandtl |
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| 108 | !-- layer) |
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| 109 | IF ( adjust_mixing_length .AND. prandtl_layer ) THEN |
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| 110 | k = nzb+1 |
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| 111 | l_black(k) = MIN( l_black(k), kappa * zu(k) ) |
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| 112 | ENDIF |
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| 113 | ENDIF |
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| 114 | l1d = l_black |
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| 115 | l1d_m = l_black |
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| 116 | u1d = u_init |
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| 117 | u1d_m = u_init |
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| 118 | u1d_p = u_init |
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| 119 | v1d = v_init |
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| 120 | v1d_m = v_init |
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| 121 | v1d_p = v_init |
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| 122 | |
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| 123 | ! |
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| 124 | !-- Set initial horizontal velocities at the lowest grid levels to a very small |
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| 125 | !-- value in order to avoid too small time steps caused by the diffusion limit |
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| 126 | !-- in the initial phase of a run (at k=1, dz/2 occurs in the limiting formula!) |
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| 127 | u1d(0:1) = 0.1 |
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| 128 | u1d_m(0:1) = 0.1 |
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| 129 | u1d_p(0:1) = 0.1 |
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| 130 | v1d(0:1) = 0.1 |
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| 131 | v1d_m(0:1) = 0.1 |
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| 132 | v1d_p(0:1) = 0.1 |
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| 133 | |
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| 134 | ! |
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| 135 | !-- For u*, theta* and the momentum fluxes plausible values are set |
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| 136 | IF ( prandtl_layer ) THEN |
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| 137 | us1d = 0.1 ! without initial friction the flow would not change |
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| 138 | ELSE |
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| 139 | e1d(nzb+1) = 1.0 |
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| 140 | km1d(nzb+1) = 1.0 |
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| 141 | us1d = 0.0 |
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| 142 | ENDIF |
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| 143 | ts1d = 0.0 |
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| 144 | usws1d = 0.0; usws1d_m = 0.0 |
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| 145 | vsws1d = 0.0; vsws1d_m = 0.0 |
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| 146 | z01d = roughness_length |
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[75] | 147 | IF ( humidity .OR. passive_scalar ) qs1d = 0.0 |
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[1] | 148 | |
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| 149 | ! |
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[46] | 150 | !-- Tendencies must be preset in order to avoid runtime errors within the |
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| 151 | !-- first Runge-Kutta step |
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| 152 | te_em = 0.0 |
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| 153 | te_um = 0.0 |
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| 154 | te_vm = 0.0 |
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| 155 | |
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| 156 | ! |
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[1] | 157 | !-- Set start time in hh:mm:ss - format |
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| 158 | simulated_time_chr = time_to_string( simulated_time_1d ) |
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| 159 | |
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| 160 | ! |
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| 161 | !-- Integrate the 1D-model equations using the leap-frog scheme |
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| 162 | CALL time_integration_1d |
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| 163 | |
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| 164 | |
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| 165 | END SUBROUTINE init_1d_model |
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| 166 | |
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| 167 | |
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| 168 | |
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| 169 | SUBROUTINE time_integration_1d |
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| 170 | |
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| 171 | !------------------------------------------------------------------------------! |
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| 172 | ! Description: |
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| 173 | ! ------------ |
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| 174 | ! Leap-frog time differencing scheme for the 1D-model. |
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| 175 | !------------------------------------------------------------------------------! |
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| 176 | |
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| 177 | USE arrays_3d |
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| 178 | USE control_parameters |
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| 179 | USE indices |
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| 180 | USE model_1d |
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| 181 | USE pegrid |
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| 182 | |
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| 183 | IMPLICIT NONE |
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| 184 | |
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| 185 | CHARACTER (LEN=9) :: time_to_string |
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| 186 | INTEGER :: k |
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| 187 | REAL :: a, b, dissipation, dpt_dz, flux, kmzm, kmzp, l_stable, pt_0, & |
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| 188 | uv_total |
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| 189 | |
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| 190 | ! |
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| 191 | !-- Determine the time step at the start of a 1D-simulation and |
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| 192 | !-- determine and printout quantities used for run control |
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| 193 | CALL timestep_1d |
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| 194 | CALL run_control_1d |
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| 195 | |
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| 196 | ! |
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| 197 | !-- Start of time loop |
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| 198 | DO WHILE ( simulated_time_1d < end_time_1d .AND. .NOT. stop_dt_1d ) |
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| 199 | |
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| 200 | ! |
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| 201 | !-- Depending on the timestep scheme, carry out one or more intermediate |
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| 202 | !-- timesteps |
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| 203 | |
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| 204 | intermediate_timestep_count = 0 |
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| 205 | DO WHILE ( intermediate_timestep_count < & |
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| 206 | intermediate_timestep_count_max ) |
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| 207 | |
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| 208 | intermediate_timestep_count = intermediate_timestep_count + 1 |
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| 209 | |
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| 210 | CALL timestep_scheme_steering |
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| 211 | |
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| 212 | ! |
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| 213 | !-- Compute all tendency terms. If a Prandtl-layer is simulated, k starts |
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| 214 | !-- at nzb+2. |
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| 215 | DO k = nzb_diff, nzt |
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| 216 | |
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| 217 | kmzm = 0.5 * ( km1d_m(k-1) + km1d_m(k) ) |
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| 218 | kmzp = 0.5 * ( km1d_m(k) + km1d_m(k+1) ) |
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| 219 | ! |
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| 220 | !-- u-component |
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| 221 | te_u(k) = f * ( v1d(k) - vg(k) ) + ( & |
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| 222 | kmzp * ( u1d_m(k+1) - u1d_m(k) ) * ddzu(k+1) & |
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| 223 | - kmzm * ( u1d_m(k) - u1d_m(k-1) ) * ddzu(k) & |
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| 224 | ) * ddzw(k) |
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| 225 | ! |
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| 226 | !-- v-component |
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| 227 | te_v(k) = -f * ( u1d(k) - ug(k) ) + ( & |
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| 228 | kmzp * ( v1d_m(k+1) - v1d_m(k) ) * ddzu(k+1) & |
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| 229 | - kmzm * ( v1d_m(k) - v1d_m(k-1) ) * ddzu(k) & |
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| 230 | ) * ddzw(k) |
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| 231 | ENDDO |
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| 232 | IF ( .NOT. constant_diffusion ) THEN |
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| 233 | DO k = nzb_diff, nzt |
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| 234 | ! |
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| 235 | !-- TKE |
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| 236 | kmzm = 0.5 * ( km1d_m(k-1) + km1d_m(k) ) |
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| 237 | kmzp = 0.5 * ( km1d_m(k) + km1d_m(k+1) ) |
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[75] | 238 | IF ( .NOT. humidity ) THEN |
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[1] | 239 | pt_0 = pt_init(k) |
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| 240 | flux = ( pt_init(k+1)-pt_init(k-1) ) * dd2zu(k) |
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| 241 | ELSE |
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| 242 | pt_0 = pt_init(k) * ( 1.0 + 0.61 * q_init(k) ) |
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| 243 | flux = ( ( pt_init(k+1) - pt_init(k-1) ) + & |
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| 244 | 0.61 * pt_init(k) * ( q_init(k+1) - q_init(k-1) ) & |
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| 245 | ) * dd2zu(k) |
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| 246 | ENDIF |
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| 247 | |
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| 248 | IF ( dissipation_1d == 'detering' ) THEN |
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| 249 | ! |
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| 250 | !-- According to Detering, c_e=0.064 |
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| 251 | dissipation = 0.064 * e1d_m(k) * SQRT( e1d_m(k) ) / l1d_m(k) |
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| 252 | ELSEIF ( dissipation_1d == 'as_in_3d_model' ) THEN |
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| 253 | dissipation = ( 0.19 + 0.74 * l1d_m(k) / l_grid(k) ) & |
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| 254 | * e1d_m(k) * SQRT( e1d_m(k) ) / l1d_m(k) |
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| 255 | ENDIF |
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| 256 | |
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| 257 | te_e(k) = km1d(k) * ( ( ( u1d(k+1) - u1d(k-1) ) * dd2zu(k) )**2& |
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| 258 | + ( ( v1d(k+1) - v1d(k-1) ) * dd2zu(k) )**2& |
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| 259 | ) & |
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| 260 | - g / pt_0 * kh1d(k) * flux & |
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| 261 | + ( & |
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| 262 | kmzp * ( e1d_m(k+1) - e1d_m(k) ) * ddzu(k+1) & |
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| 263 | - kmzm * ( e1d_m(k) - e1d_m(k-1) ) * ddzu(k) & |
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| 264 | ) * ddzw(k) & |
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| 265 | - dissipation |
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| 266 | ENDDO |
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| 267 | ENDIF |
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| 268 | |
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| 269 | ! |
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| 270 | !-- Tendency terms at the top of the Prandtl-layer. |
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| 271 | !-- Finite differences of the momentum fluxes are computed using half the |
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| 272 | !-- normal grid length (2.0*ddzw(k)) for the sake of enhanced accuracy |
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| 273 | IF ( prandtl_layer ) THEN |
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| 274 | |
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| 275 | k = nzb+1 |
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| 276 | kmzm = 0.5 * ( km1d_m(k-1) + km1d_m(k) ) |
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| 277 | kmzp = 0.5 * ( km1d_m(k) + km1d_m(k+1) ) |
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[75] | 278 | IF ( .NOT. humidity ) THEN |
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[1] | 279 | pt_0 = pt_init(k) |
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| 280 | flux = ( pt_init(k+1)-pt_init(k-1) ) * dd2zu(k) |
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| 281 | ELSE |
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| 282 | pt_0 = pt_init(k) * ( 1.0 + 0.61 * q_init(k) ) |
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| 283 | flux = ( ( pt_init(k+1) - pt_init(k-1) ) + & |
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| 284 | 0.61 * pt_init(k) * ( q_init(k+1) - q_init(k-1) ) & |
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| 285 | ) * dd2zu(k) |
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| 286 | ENDIF |
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| 287 | |
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| 288 | IF ( dissipation_1d == 'detering' ) THEN |
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| 289 | ! |
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| 290 | !-- According to Detering, c_e=0.064 |
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| 291 | dissipation = 0.064 * e1d_m(k) * SQRT( e1d_m(k) ) / l1d_m(k) |
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| 292 | ELSEIF ( dissipation_1d == 'as_in_3d_model' ) THEN |
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| 293 | dissipation = ( 0.19 + 0.74 * l1d_m(k) / l_grid(k) ) & |
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| 294 | * e1d_m(k) * SQRT( e1d_m(k) ) / l1d_m(k) |
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| 295 | ENDIF |
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| 296 | |
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| 297 | ! |
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| 298 | !-- u-component |
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| 299 | te_u(k) = f * ( v1d(k) - vg(k) ) + ( & |
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| 300 | kmzp * ( u1d_m(k+1) - u1d_m(k) ) * ddzu(k+1) + usws1d_m & |
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| 301 | ) * 2.0 * ddzw(k) |
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| 302 | ! |
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| 303 | !-- v-component |
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| 304 | te_v(k) = -f * ( u1d(k) - ug(k) ) + ( & |
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| 305 | kmzp * ( v1d_m(k+1) - v1d_m(k) ) * ddzu(k+1) + vsws1d_m & |
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| 306 | ) * 2.0 * ddzw(k) |
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| 307 | ! |
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| 308 | !-- TKE |
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| 309 | te_e(k) = km1d(k) * ( ( ( u1d(k+1) - u1d(k-1) ) * dd2zu(k) )**2 & |
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| 310 | + ( ( v1d(k+1) - v1d(k-1) ) * dd2zu(k) )**2 & |
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| 311 | ) & |
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| 312 | - g / pt_0 * kh1d(k) * flux & |
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| 313 | + ( & |
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| 314 | kmzp * ( e1d_m(k+1) - e1d_m(k) ) * ddzu(k+1) & |
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| 315 | - kmzm * ( e1d_m(k) - e1d_m(k-1) ) * ddzu(k) & |
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| 316 | ) * ddzw(k) & |
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| 317 | - dissipation |
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| 318 | ENDIF |
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| 319 | |
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| 320 | ! |
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| 321 | !-- Prognostic equations for all 1D variables |
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| 322 | DO k = nzb+1, nzt |
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| 323 | |
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| 324 | u1d_p(k) = ( 1. - tsc(1) ) * u1d_m(k) + & |
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| 325 | tsc(1) * u1d(k) + dt_1d * ( tsc(2) * te_u(k) + & |
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| 326 | tsc(3) * te_um(k) ) |
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| 327 | v1d_p(k) = ( 1. - tsc(1) ) * v1d_m(k) + & |
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| 328 | tsc(1) * v1d(k) + dt_1d * ( tsc(2) * te_v(k) + & |
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| 329 | tsc(3) * te_vm(k) ) |
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| 330 | |
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| 331 | ENDDO |
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| 332 | IF ( .NOT. constant_diffusion ) THEN |
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| 333 | DO k = nzb+1, nzt |
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| 334 | |
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| 335 | e1d_p(k) = ( 1. - tsc(1) ) * e1d_m(k) + & |
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| 336 | tsc(1) * e1d(k) + dt_1d * ( tsc(2) * te_e(k) + & |
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| 337 | tsc(3) * te_em(k) ) |
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| 338 | |
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| 339 | ENDDO |
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| 340 | ! |
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| 341 | !-- Eliminate negative TKE values, which can result from the |
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| 342 | !-- integration due to numerical inaccuracies. In such cases the TKE |
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| 343 | !-- value is reduced to 10 percent of its old value. |
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| 344 | WHERE ( e1d_p < 0.0 ) e1d_p = 0.1 * e1d |
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| 345 | ENDIF |
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| 346 | |
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| 347 | ! |
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| 348 | !-- Calculate tendencies for the next Runge-Kutta step |
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| 349 | IF ( timestep_scheme(1:5) == 'runge' ) THEN |
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| 350 | IF ( intermediate_timestep_count == 1 ) THEN |
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| 351 | |
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| 352 | DO k = nzb+1, nzt |
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| 353 | te_um(k) = te_u(k) |
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| 354 | te_vm(k) = te_v(k) |
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| 355 | ENDDO |
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| 356 | |
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| 357 | IF ( .NOT. constant_diffusion ) THEN |
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| 358 | DO k = nzb+1, nzt |
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| 359 | te_em(k) = te_e(k) |
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| 360 | ENDDO |
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| 361 | ENDIF |
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| 362 | |
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| 363 | ELSEIF ( intermediate_timestep_count < & |
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| 364 | intermediate_timestep_count_max ) THEN |
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| 365 | |
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| 366 | DO k = nzb+1, nzt |
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| 367 | te_um(k) = -9.5625 * te_u(k) + 5.3125 * te_um(k) |
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| 368 | te_vm(k) = -9.5625 * te_v(k) + 5.3125 * te_vm(k) |
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| 369 | ENDDO |
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| 370 | |
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| 371 | IF ( .NOT. constant_diffusion ) THEN |
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| 372 | DO k = nzb+1, nzt |
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| 373 | te_em(k) = -9.5625 * te_e(k) + 5.3125 * te_em(k) |
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| 374 | ENDDO |
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| 375 | ENDIF |
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| 376 | |
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| 377 | ENDIF |
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| 378 | ENDIF |
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| 379 | |
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| 380 | |
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| 381 | ! |
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| 382 | !-- Boundary conditions for the prognostic variables. |
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| 383 | !-- At the top boundary (nzt+1) u,v and e keep their initial values |
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| 384 | !-- (ug(nzt+1), vg(nzt+1), 0), at the bottom boundary the mirror |
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| 385 | !-- boundary condition applies to u and v. |
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| 386 | !-- The boundary condition for e is set further below ( (u*/cm)**2 ). |
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| 387 | u1d_p(nzb) = -u1d_p(nzb+1) |
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| 388 | v1d_p(nzb) = -v1d_p(nzb+1) |
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| 389 | |
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| 390 | ! |
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| 391 | !-- If necessary, apply the time filter |
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| 392 | IF ( asselin_filter_factor /= 0.0 .AND. & |
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| 393 | timestep_scheme(1:5) /= 'runge' ) THEN |
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| 394 | |
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| 395 | u1d = u1d + asselin_filter_factor * ( u1d_p - 2.0 * u1d + u1d_m ) |
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| 396 | v1d = v1d + asselin_filter_factor * ( v1d_p - 2.0 * v1d + v1d_m ) |
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| 397 | |
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| 398 | IF ( .NOT. constant_diffusion ) THEN |
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| 399 | e1d = e1d + asselin_filter_factor * & |
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| 400 | ( e1d_p - 2.0 * e1d + e1d_m ) |
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| 401 | ENDIF |
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| 402 | |
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| 403 | ENDIF |
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| 404 | |
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| 405 | ! |
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| 406 | !-- Swap the time levels in preparation for the next time step. |
---|
| 407 | IF ( timestep_scheme(1:4) == 'leap' ) THEN |
---|
| 408 | u1d_m = u1d |
---|
| 409 | v1d_m = v1d |
---|
| 410 | IF ( .NOT. constant_diffusion ) THEN |
---|
| 411 | e1d_m = e1d |
---|
| 412 | kh1d_m = kh1d ! The old diffusion quantities are required for |
---|
| 413 | km1d_m = km1d ! explicit diffusion in the leap-frog scheme. |
---|
| 414 | l1d_m = l1d |
---|
| 415 | IF ( prandtl_layer ) THEN |
---|
| 416 | usws1d_m = usws1d |
---|
| 417 | vsws1d_m = vsws1d |
---|
| 418 | ENDIF |
---|
| 419 | ENDIF |
---|
| 420 | ENDIF |
---|
| 421 | u1d = u1d_p |
---|
| 422 | v1d = v1d_p |
---|
| 423 | IF ( .NOT. constant_diffusion ) THEN |
---|
| 424 | e1d = e1d_p |
---|
| 425 | ENDIF |
---|
| 426 | |
---|
| 427 | ! |
---|
| 428 | !-- Compute diffusion quantities |
---|
| 429 | IF ( .NOT. constant_diffusion ) THEN |
---|
| 430 | |
---|
| 431 | ! |
---|
| 432 | !-- First compute the vertical fluxes in the Prandtl-layer |
---|
| 433 | IF ( prandtl_layer ) THEN |
---|
| 434 | ! |
---|
| 435 | !-- Compute theta* using Rif numbers of the previous time step |
---|
| 436 | IF ( rif1d(1) >= 0.0 ) THEN |
---|
| 437 | ! |
---|
| 438 | !-- Stable stratification |
---|
| 439 | ts1d = kappa * ( pt_init(nzb+1) - pt_init(nzb) ) / & |
---|
| 440 | ( LOG( zu(nzb+1) / z01d ) + 5.0 * rif1d(nzb+1) * & |
---|
| 441 | ( zu(nzb+1) - z01d ) / zu(nzb+1) & |
---|
| 442 | ) |
---|
| 443 | ELSE |
---|
| 444 | ! |
---|
| 445 | !-- Unstable stratification |
---|
| 446 | a = SQRT( 1.0 - 16.0 * rif1d(nzb+1) ) |
---|
| 447 | b = SQRT( 1.0 - 16.0 * rif1d(nzb+1) / zu(nzb+1) * z01d ) |
---|
| 448 | ! |
---|
| 449 | !-- In the borderline case the formula for stable stratification |
---|
| 450 | !-- must be applied, because otherwise a zero division would |
---|
| 451 | !-- occur in the argument of the logarithm. |
---|
| 452 | IF ( a == 0.0 .OR. b == 0.0 ) THEN |
---|
| 453 | ts1d = kappa * ( pt_init(nzb+1) - pt_init(nzb) ) / & |
---|
| 454 | ( LOG( zu(nzb+1) / z01d ) + 5.0 * rif1d(nzb+1) * & |
---|
| 455 | ( zu(nzb+1) - z01d ) / zu(nzb+1) & |
---|
| 456 | ) |
---|
| 457 | ELSE |
---|
| 458 | ts1d = kappa * ( pt_init(nzb+1) - pt_init(nzb) ) / & |
---|
| 459 | LOG( (a-1.0) / (a+1.0) * (b+1.0) / (b-1.0) ) |
---|
| 460 | ENDIF |
---|
| 461 | ENDIF |
---|
| 462 | |
---|
| 463 | ENDIF ! prandtl_layer |
---|
| 464 | |
---|
| 465 | ! |
---|
| 466 | !-- Compute the Richardson-flux numbers, |
---|
| 467 | !-- first at the top of the Prandtl-layer using u* of the previous |
---|
| 468 | !-- time step (+1E-30, if u* = 0), then in the remaining area. There |
---|
| 469 | !-- the rif-numbers of the previous time step are used. |
---|
| 470 | |
---|
| 471 | IF ( prandtl_layer ) THEN |
---|
[75] | 472 | IF ( .NOT. humidity ) THEN |
---|
[1] | 473 | pt_0 = pt_init(nzb+1) |
---|
| 474 | flux = ts1d |
---|
| 475 | ELSE |
---|
| 476 | pt_0 = pt_init(nzb+1) * ( 1.0 + 0.61 * q_init(nzb+1) ) |
---|
| 477 | flux = ts1d + 0.61 * pt_init(k) * qs1d |
---|
| 478 | ENDIF |
---|
| 479 | rif1d(nzb+1) = zu(nzb+1) * kappa * g * flux / & |
---|
| 480 | ( pt_0 * ( us1d**2 + 1E-30 ) ) |
---|
| 481 | ENDIF |
---|
| 482 | |
---|
| 483 | DO k = nzb_diff, nzt |
---|
[75] | 484 | IF ( .NOT. humidity ) THEN |
---|
[1] | 485 | pt_0 = pt_init(k) |
---|
| 486 | flux = ( pt_init(k+1) - pt_init(k-1) ) * dd2zu(k) |
---|
| 487 | ELSE |
---|
| 488 | pt_0 = pt_init(k) * ( 1.0 + 0.61 * q_init(k) ) |
---|
| 489 | flux = ( ( pt_init(k+1) - pt_init(k-1) ) & |
---|
| 490 | + 0.61 * pt_init(k) * ( q_init(k+1) - q_init(k-1) )& |
---|
| 491 | ) * dd2zu(k) |
---|
| 492 | ENDIF |
---|
| 493 | IF ( rif1d(k) >= 0.0 ) THEN |
---|
| 494 | rif1d(k) = g / pt_0 * flux / & |
---|
| 495 | ( ( ( u1d(k+1) - u1d(k-1) ) * dd2zu(k) )**2 & |
---|
| 496 | + ( ( v1d(k+1) - v1d(k-1) ) * dd2zu(k) )**2 & |
---|
| 497 | + 1E-30 & |
---|
| 498 | ) |
---|
| 499 | ELSE |
---|
| 500 | rif1d(k) = g / pt_0 * flux / & |
---|
| 501 | ( ( ( u1d(k+1) - u1d(k-1) ) * dd2zu(k) )**2 & |
---|
| 502 | + ( ( v1d(k+1) - v1d(k-1) ) * dd2zu(k) )**2 & |
---|
| 503 | + 1E-30 & |
---|
| 504 | ) * ( 1.0 - 16.0 * rif1d(k) )**0.25 |
---|
| 505 | ENDIF |
---|
| 506 | ENDDO |
---|
| 507 | ! |
---|
| 508 | !-- Richardson-numbers must remain restricted to a realistic value |
---|
| 509 | !-- range. It is exceeded excessively for very small velocities |
---|
| 510 | !-- (u,v --> 0). |
---|
| 511 | WHERE ( rif1d < rif_min ) rif1d = rif_min |
---|
| 512 | WHERE ( rif1d > rif_max ) rif1d = rif_max |
---|
| 513 | |
---|
| 514 | ! |
---|
| 515 | !-- Compute u* from the absolute velocity value |
---|
| 516 | IF ( prandtl_layer ) THEN |
---|
| 517 | uv_total = SQRT( u1d(nzb+1)**2 + v1d(nzb+1)**2 ) |
---|
| 518 | |
---|
| 519 | IF ( rif1d(nzb+1) >= 0.0 ) THEN |
---|
| 520 | ! |
---|
| 521 | !-- Stable stratification |
---|
| 522 | us1d = kappa * uv_total / ( & |
---|
| 523 | LOG( zu(nzb+1) / z01d ) + 5.0 * rif1d(nzb+1) * & |
---|
| 524 | ( zu(nzb+1) - z01d ) / zu(nzb+1) & |
---|
| 525 | ) |
---|
| 526 | ELSE |
---|
| 527 | ! |
---|
| 528 | !-- Unstable stratification |
---|
| 529 | a = 1.0 / SQRT( SQRT( 1.0 - 16.0 * rif1d(nzb+1) ) ) |
---|
| 530 | b = 1.0 / SQRT( SQRT( 1.0 - 16.0 * rif1d(nzb+1) / zu(nzb+1) & |
---|
| 531 | * z01d ) ) |
---|
| 532 | ! |
---|
| 533 | !-- In the borderline case the formula for stable stratification |
---|
| 534 | !-- must be applied, because otherwise a zero division would |
---|
| 535 | !-- occur in the argument of the logarithm. |
---|
| 536 | IF ( a == 1.0 .OR. b == 1.0 ) THEN |
---|
| 537 | us1d = kappa * uv_total / ( & |
---|
| 538 | LOG( zu(nzb+1) / z01d ) + & |
---|
| 539 | 5.0 * rif1d(nzb+1) * ( zu(nzb+1) - z01d ) / & |
---|
| 540 | zu(nzb+1) ) |
---|
| 541 | ELSE |
---|
| 542 | us1d = kappa * uv_total / ( & |
---|
| 543 | LOG( (1.0+b) / (1.0-b) * (1.0-a) / (1.0+a) ) +& |
---|
| 544 | 2.0 * ( ATAN( b ) - ATAN( a ) ) & |
---|
| 545 | ) |
---|
| 546 | ENDIF |
---|
| 547 | ENDIF |
---|
| 548 | |
---|
| 549 | ! |
---|
| 550 | !-- Compute the momentum fluxes for the diffusion terms |
---|
| 551 | usws1d = - u1d(nzb+1) / uv_total * us1d**2 |
---|
| 552 | vsws1d = - v1d(nzb+1) / uv_total * us1d**2 |
---|
| 553 | |
---|
| 554 | ! |
---|
| 555 | !-- Boundary condition for the turbulent kinetic energy at the top |
---|
| 556 | !-- of the Prandtl-layer. c_m = 0.4 according to Detering. |
---|
| 557 | !-- Additional Neumann condition de/dz = 0 at nzb is set to ensure |
---|
| 558 | !-- compatibility with the 3D model. |
---|
| 559 | IF ( ibc_e_b == 2 ) THEN |
---|
| 560 | e1d(nzb+1) = ( us1d / 0.1 )**2 |
---|
| 561 | ! e1d(nzb+1) = ( us1d / 0.4 )**2 !not used so far, see also |
---|
| 562 | !prandtl_fluxes |
---|
| 563 | ENDIF |
---|
| 564 | e1d(nzb) = e1d(nzb+1) |
---|
| 565 | |
---|
[75] | 566 | IF ( humidity .OR. passive_scalar ) THEN |
---|
[1] | 567 | ! |
---|
| 568 | !-- Compute q* |
---|
| 569 | IF ( rif1d(1) >= 0.0 ) THEN |
---|
| 570 | ! |
---|
| 571 | !-- Stable stratification |
---|
| 572 | qs1d = kappa * ( q_init(nzb+1) - q_init(nzb) ) / & |
---|
| 573 | ( LOG( zu(nzb+1) / z01d ) + 5.0 * rif1d(nzb+1) * & |
---|
| 574 | ( zu(nzb+1) - z01d ) / zu(nzb+1) & |
---|
| 575 | ) |
---|
| 576 | ELSE |
---|
| 577 | ! |
---|
| 578 | !-- Unstable stratification |
---|
| 579 | a = SQRT( 1.0 - 16.0 * rif1d(nzb+1) ) |
---|
| 580 | b = SQRT( 1.0 - 16.0 * rif1d(nzb+1) / zu(nzb+1) * z01d ) |
---|
| 581 | ! |
---|
| 582 | !-- In the borderline case the formula for stable stratification |
---|
| 583 | !-- must be applied, because otherwise a zero division would |
---|
| 584 | !-- occur in the argument of the logarithm. |
---|
| 585 | IF ( a == 1.0 .OR. b == 1.0 ) THEN |
---|
| 586 | qs1d = kappa * ( q_init(nzb+1) - q_init(nzb) ) / & |
---|
| 587 | ( LOG( zu(nzb+1) / z01d ) + 5.0 * rif1d(nzb+1) * & |
---|
| 588 | ( zu(nzb+1) - z01d ) / zu(nzb+1) & |
---|
| 589 | ) |
---|
| 590 | ELSE |
---|
| 591 | qs1d = kappa * ( q_init(nzb+1) - q_init(nzb) ) / & |
---|
| 592 | LOG( (a-1.0) / (a+1.0) * (b+1.0) / (b-1.0) ) |
---|
| 593 | ENDIF |
---|
| 594 | ENDIF |
---|
| 595 | ELSE |
---|
| 596 | qs1d = 0.0 |
---|
| 597 | ENDIF |
---|
| 598 | |
---|
| 599 | ENDIF ! prandtl_layer |
---|
| 600 | |
---|
| 601 | ! |
---|
| 602 | !-- Compute the diabatic mixing length |
---|
| 603 | IF ( mixing_length_1d == 'blackadar' ) THEN |
---|
| 604 | DO k = nzb+1, nzt |
---|
| 605 | IF ( rif1d(k) >= 0.0 ) THEN |
---|
| 606 | l1d(k) = l_black(k) / ( 1.0 + 5.0 * rif1d(k) ) |
---|
| 607 | ELSE |
---|
| 608 | l1d(k) = l_black(k) * ( 1.0 - 16.0 * rif1d(k) )**0.25 |
---|
| 609 | ENDIF |
---|
| 610 | l1d(k) = l_black(k) |
---|
| 611 | ENDDO |
---|
| 612 | |
---|
| 613 | ELSEIF ( mixing_length_1d == 'as_in_3d_model' ) THEN |
---|
| 614 | DO k = nzb+1, nzt |
---|
| 615 | dpt_dz = ( pt_init(k+1) - pt_init(k-1) ) * dd2zu(k) |
---|
| 616 | IF ( dpt_dz > 0.0 ) THEN |
---|
| 617 | l_stable = 0.76 * SQRT( e1d(k) ) / & |
---|
| 618 | SQRT( g / pt_init(k) * dpt_dz ) + 1E-5 |
---|
| 619 | ELSE |
---|
| 620 | l_stable = l_grid(k) |
---|
| 621 | ENDIF |
---|
| 622 | l1d(k) = MIN( l_grid(k), l_stable ) |
---|
| 623 | ENDDO |
---|
| 624 | ENDIF |
---|
| 625 | |
---|
| 626 | ! |
---|
| 627 | !-- Adjust mixing length to the prandtl mixing length |
---|
| 628 | IF ( adjust_mixing_length .AND. prandtl_layer ) THEN |
---|
| 629 | k = nzb+1 |
---|
| 630 | IF ( rif1d(k) >= 0.0 ) THEN |
---|
| 631 | l1d(k) = MIN( l1d(k), kappa * zu(k) / ( 1.0 + 5.0 * & |
---|
| 632 | rif1d(k) ) ) |
---|
| 633 | ELSE |
---|
| 634 | l1d(k) = MIN( l1d(k), kappa * zu(k) * & |
---|
| 635 | SQRT( SQRT( 1.0 - 16.0 * rif1d(k) ) ) ) |
---|
| 636 | ENDIF |
---|
| 637 | ENDIF |
---|
| 638 | |
---|
| 639 | ! |
---|
| 640 | !-- Compute the diffusion coefficients for momentum via the |
---|
| 641 | !-- corresponding Prandtl-layer relationship and according to |
---|
| 642 | !-- Prandtl-Kolmogorov, respectively. The unstable stratification is |
---|
| 643 | !-- computed via the adiabatic mixing length, for the unstability has |
---|
| 644 | !-- already been taken account of via the TKE (cf. also Diss.). |
---|
| 645 | IF ( prandtl_layer ) THEN |
---|
| 646 | IF ( rif1d(nzb+1) >= 0.0 ) THEN |
---|
| 647 | km1d(nzb+1) = us1d * kappa * zu(nzb+1) / & |
---|
| 648 | ( 1.0 + 5.0 * rif1d(nzb+1) ) |
---|
| 649 | ELSE |
---|
| 650 | km1d(nzb+1) = us1d * kappa * zu(nzb+1) * & |
---|
| 651 | ( 1.0 - 16.0 * rif1d(nzb+1) )**0.25 |
---|
| 652 | ENDIF |
---|
| 653 | ENDIF |
---|
| 654 | DO k = nzb_diff, nzt |
---|
| 655 | ! km1d(k) = 0.4 * SQRT( e1d(k) ) !changed: adjustment to 3D-model |
---|
| 656 | km1d(k) = 0.1 * SQRT( e1d(k) ) |
---|
| 657 | IF ( rif1d(k) >= 0.0 ) THEN |
---|
| 658 | km1d(k) = km1d(k) * l1d(k) |
---|
| 659 | ELSE |
---|
| 660 | km1d(k) = km1d(k) * l_black(k) |
---|
| 661 | ENDIF |
---|
| 662 | ENDDO |
---|
| 663 | |
---|
| 664 | ! |
---|
| 665 | !-- Add damping layer |
---|
| 666 | DO k = damp_level_ind_1d+1, nzt+1 |
---|
| 667 | km1d(k) = 1.1 * km1d(k-1) |
---|
| 668 | km1d(k) = MIN( km1d(k), 10.0 ) |
---|
| 669 | ENDDO |
---|
| 670 | |
---|
| 671 | ! |
---|
| 672 | !-- Compute the diffusion coefficient for heat via the relationship |
---|
| 673 | !-- kh = phim / phih * km |
---|
| 674 | DO k = nzb+1, nzt |
---|
| 675 | IF ( rif1d(k) >= 0.0 ) THEN |
---|
| 676 | kh1d(k) = km1d(k) |
---|
| 677 | ELSE |
---|
| 678 | kh1d(k) = km1d(k) * ( 1.0 - 16.0 * rif1d(k) )**0.25 |
---|
| 679 | ENDIF |
---|
| 680 | ENDDO |
---|
| 681 | |
---|
| 682 | ENDIF ! .NOT. constant_diffusion |
---|
| 683 | |
---|
| 684 | ! |
---|
| 685 | !-- The Runge-Kutta scheme needs the recent diffusion quantities |
---|
| 686 | IF ( timestep_scheme(1:5) == 'runge' ) THEN |
---|
| 687 | u1d_m = u1d |
---|
| 688 | v1d_m = v1d |
---|
| 689 | IF ( .NOT. constant_diffusion ) THEN |
---|
| 690 | e1d_m = e1d |
---|
| 691 | kh1d_m = kh1d |
---|
| 692 | km1d_m = km1d |
---|
| 693 | l1d_m = l1d |
---|
| 694 | IF ( prandtl_layer ) THEN |
---|
| 695 | usws1d_m = usws1d |
---|
| 696 | vsws1d_m = vsws1d |
---|
| 697 | ENDIF |
---|
| 698 | ENDIF |
---|
| 699 | ENDIF |
---|
| 700 | |
---|
| 701 | |
---|
| 702 | ENDDO ! intermediate step loop |
---|
| 703 | |
---|
| 704 | ! |
---|
| 705 | !-- Increment simulated time and output times |
---|
| 706 | current_timestep_number_1d = current_timestep_number_1d + 1 |
---|
| 707 | simulated_time_1d = simulated_time_1d + dt_1d |
---|
| 708 | simulated_time_chr = time_to_string( simulated_time_1d ) |
---|
| 709 | time_pr_1d = time_pr_1d + dt_1d |
---|
| 710 | time_run_control_1d = time_run_control_1d + dt_1d |
---|
| 711 | |
---|
| 712 | ! |
---|
| 713 | !-- Determine and print out quantities for run control |
---|
| 714 | IF ( time_run_control_1d >= dt_run_control_1d ) THEN |
---|
| 715 | CALL run_control_1d |
---|
| 716 | time_run_control_1d = time_run_control_1d - dt_run_control_1d |
---|
| 717 | ENDIF |
---|
| 718 | |
---|
| 719 | ! |
---|
| 720 | !-- Profile output on file |
---|
| 721 | IF ( time_pr_1d >= dt_pr_1d ) THEN |
---|
| 722 | CALL print_1d_model |
---|
| 723 | time_pr_1d = time_pr_1d - dt_pr_1d |
---|
| 724 | ENDIF |
---|
| 725 | |
---|
| 726 | ! |
---|
| 727 | !-- Determine size of next time step |
---|
| 728 | CALL timestep_1d |
---|
| 729 | |
---|
| 730 | ENDDO ! time loop |
---|
| 731 | |
---|
| 732 | |
---|
| 733 | END SUBROUTINE time_integration_1d |
---|
| 734 | |
---|
| 735 | |
---|
| 736 | SUBROUTINE run_control_1d |
---|
| 737 | |
---|
| 738 | !------------------------------------------------------------------------------! |
---|
| 739 | ! Description: |
---|
| 740 | ! ------------ |
---|
| 741 | ! Compute and print out quantities for run control of the 1D model. |
---|
| 742 | !------------------------------------------------------------------------------! |
---|
| 743 | |
---|
| 744 | USE constants |
---|
| 745 | USE indices |
---|
| 746 | USE model_1d |
---|
| 747 | USE pegrid |
---|
| 748 | USE control_parameters |
---|
| 749 | |
---|
| 750 | IMPLICIT NONE |
---|
| 751 | |
---|
| 752 | INTEGER :: k |
---|
| 753 | REAL :: alpha, energy, umax, uv_total, vmax |
---|
| 754 | |
---|
| 755 | ! |
---|
| 756 | !-- Output |
---|
| 757 | IF ( myid == 0 ) THEN |
---|
| 758 | ! |
---|
| 759 | !-- If necessary, write header |
---|
| 760 | IF ( .NOT. run_control_header_1d ) THEN |
---|
[184] | 761 | CALL check_open( 15 ) |
---|
[1] | 762 | WRITE ( 15, 100 ) |
---|
| 763 | run_control_header_1d = .TRUE. |
---|
| 764 | ENDIF |
---|
| 765 | |
---|
| 766 | ! |
---|
| 767 | !-- Compute control quantities |
---|
| 768 | !-- grid level nzp is excluded due to mirror boundary condition |
---|
| 769 | umax = 0.0; vmax = 0.0; energy = 0.0 |
---|
| 770 | DO k = nzb+1, nzt+1 |
---|
| 771 | umax = MAX( ABS( umax ), ABS( u1d(k) ) ) |
---|
| 772 | vmax = MAX( ABS( vmax ), ABS( v1d(k) ) ) |
---|
| 773 | energy = energy + 0.5 * ( u1d(k)**2 + v1d(k)**2 ) |
---|
| 774 | ENDDO |
---|
| 775 | energy = energy / REAL( nzt - nzb + 1 ) |
---|
| 776 | |
---|
| 777 | uv_total = SQRT( u1d(nzb+1)**2 + v1d(nzb+1)**2 ) |
---|
| 778 | IF ( ABS( v1d(nzb+1) ) .LT. 1.0E-5 ) THEN |
---|
| 779 | alpha = ACOS( SIGN( 1.0 , u1d(nzb+1) ) ) |
---|
| 780 | ELSE |
---|
| 781 | alpha = ACOS( u1d(nzb+1) / uv_total ) |
---|
| 782 | IF ( v1d(nzb+1) <= 0.0 ) alpha = 2.0 * pi - alpha |
---|
| 783 | ENDIF |
---|
| 784 | alpha = alpha / ( 2.0 * pi ) * 360.0 |
---|
| 785 | |
---|
| 786 | WRITE ( 15, 101 ) current_timestep_number_1d, simulated_time_chr, & |
---|
| 787 | dt_1d, umax, vmax, us1d, alpha, energy |
---|
| 788 | ! |
---|
| 789 | !-- Write buffer contents to disc immediately |
---|
[82] | 790 | CALL local_flush( 15 ) |
---|
[1] | 791 | |
---|
| 792 | ENDIF |
---|
| 793 | |
---|
| 794 | ! |
---|
| 795 | !-- formats |
---|
| 796 | 100 FORMAT (///'1D-Zeitschrittkontrollausgaben:'/ & |
---|
| 797 | &'------------------------------'// & |
---|
| 798 | &'ITER. HH:MM:SS DT UMAX VMAX U* ALPHA ENERG.'/ & |
---|
| 799 | &'-------------------------------------------------------------') |
---|
| 800 | 101 FORMAT (I5,2X,A9,1X,F6.2,2X,F6.2,1X,F6.2,2X,F5.3,2X,F5.1,2X,F7.2) |
---|
| 801 | |
---|
| 802 | |
---|
| 803 | END SUBROUTINE run_control_1d |
---|
| 804 | |
---|
| 805 | |
---|
| 806 | |
---|
| 807 | SUBROUTINE timestep_1d |
---|
| 808 | |
---|
| 809 | !------------------------------------------------------------------------------! |
---|
| 810 | ! Description: |
---|
| 811 | ! ------------ |
---|
| 812 | ! Compute the time step w.r.t. the diffusion criterion |
---|
| 813 | !------------------------------------------------------------------------------! |
---|
| 814 | |
---|
| 815 | USE arrays_3d |
---|
| 816 | USE indices |
---|
| 817 | USE model_1d |
---|
| 818 | USE pegrid |
---|
| 819 | USE control_parameters |
---|
| 820 | |
---|
| 821 | IMPLICIT NONE |
---|
| 822 | |
---|
| 823 | INTEGER :: k |
---|
| 824 | REAL :: div, dt_diff, fac, percent_change, value |
---|
| 825 | |
---|
| 826 | |
---|
| 827 | ! |
---|
| 828 | !-- Compute the currently feasible time step according to the diffusion |
---|
| 829 | !-- criterion. At nzb+1 the half grid length is used. |
---|
| 830 | IF ( timestep_scheme(1:4) == 'leap' ) THEN |
---|
| 831 | fac = 0.25 |
---|
| 832 | ELSE |
---|
| 833 | fac = 0.35 |
---|
| 834 | ENDIF |
---|
| 835 | dt_diff = dt_max_1d |
---|
| 836 | DO k = nzb+2, nzt |
---|
| 837 | value = fac * dzu(k) * dzu(k) / ( km1d(k) + 1E-20 ) |
---|
| 838 | dt_diff = MIN( value, dt_diff ) |
---|
| 839 | ENDDO |
---|
| 840 | value = fac * zu(nzb+1) * zu(nzb+1) / ( km1d(nzb+1) + 1E-20 ) |
---|
| 841 | dt_1d = MIN( value, dt_diff ) |
---|
| 842 | |
---|
| 843 | ! |
---|
| 844 | !-- Set flag when the time step becomes too small |
---|
| 845 | IF ( dt_1d < ( 0.00001 * dt_max_1d ) ) THEN |
---|
| 846 | stop_dt_1d = .TRUE. |
---|
[254] | 847 | |
---|
| 848 | WRITE( message_string, * ) 'timestep has exceeded the lower limit &', & |
---|
| 849 | 'dt_1d = ',dt_1d,' s simulation stopped!' |
---|
| 850 | CALL message( 'timestep_1d', 'PA0192', 1, 2, 0, 6, 0 ) |
---|
| 851 | |
---|
[1] | 852 | ENDIF |
---|
| 853 | |
---|
| 854 | IF ( timestep_scheme(1:4) == 'leap' ) THEN |
---|
| 855 | |
---|
| 856 | ! |
---|
| 857 | !-- The current time step will only be changed if the new time step exceeds |
---|
| 858 | !-- its previous value by 5 % or falls 2 % below. After a time step |
---|
| 859 | !-- reduction at least 30 iterations must be done with this value before a |
---|
| 860 | !-- new reduction will be allowed again. |
---|
| 861 | !-- The control parameters for application of Euler- or leap-frog schemes are |
---|
| 862 | !-- set accordingly. |
---|
| 863 | percent_change = dt_1d / old_dt_1d - 1.0 |
---|
| 864 | IF ( percent_change > 0.05 .OR. percent_change < -0.02 ) THEN |
---|
| 865 | |
---|
| 866 | ! |
---|
| 867 | !-- Each time step increase is by at most 2 % |
---|
| 868 | IF ( percent_change > 0.0 .AND. simulated_time_1d /= 0.0 ) THEN |
---|
| 869 | dt_1d = 1.02 * old_dt_1d |
---|
| 870 | ENDIF |
---|
| 871 | |
---|
| 872 | ! |
---|
| 873 | !-- A more or less simple new time step value is obtained taking only the |
---|
| 874 | !-- first two significant digits |
---|
| 875 | div = 1000.0 |
---|
| 876 | DO WHILE ( dt_1d < div ) |
---|
| 877 | div = div / 10.0 |
---|
| 878 | ENDDO |
---|
| 879 | dt_1d = NINT( dt_1d * 100.0 / div ) * div / 100.0 |
---|
| 880 | |
---|
| 881 | ! |
---|
| 882 | !-- Now the time step can be changed. |
---|
| 883 | IF ( percent_change < 0.0 ) THEN |
---|
| 884 | ! |
---|
| 885 | !-- Time step reduction |
---|
| 886 | old_dt_1d = dt_1d |
---|
| 887 | last_dt_change_1d = current_timestep_number_1d |
---|
| 888 | ELSE |
---|
| 889 | ! |
---|
| 890 | !-- Time step will only be increased if at least 30 iterations have |
---|
| 891 | !-- been done since the previous time step change, and of course at |
---|
| 892 | !-- simulation start, respectively. |
---|
| 893 | IF ( current_timestep_number_1d >= last_dt_change_1d + 30 .OR. & |
---|
| 894 | simulated_time_1d == 0.0 ) THEN |
---|
| 895 | old_dt_1d = dt_1d |
---|
| 896 | last_dt_change_1d = current_timestep_number_1d |
---|
| 897 | ELSE |
---|
| 898 | dt_1d = old_dt_1d |
---|
| 899 | ENDIF |
---|
| 900 | ENDIF |
---|
| 901 | ELSE |
---|
| 902 | ! |
---|
| 903 | !-- No time step change since the difference is too small |
---|
| 904 | dt_1d = old_dt_1d |
---|
| 905 | ENDIF |
---|
| 906 | |
---|
| 907 | ELSE ! Runge-Kutta |
---|
| 908 | |
---|
| 909 | !-- A more or less simple new time step value is obtained taking only the |
---|
| 910 | !-- first two significant digits |
---|
| 911 | div = 1000.0 |
---|
| 912 | DO WHILE ( dt_1d < div ) |
---|
| 913 | div = div / 10.0 |
---|
| 914 | ENDDO |
---|
| 915 | dt_1d = NINT( dt_1d * 100.0 / div ) * div / 100.0 |
---|
| 916 | |
---|
| 917 | old_dt_1d = dt_1d |
---|
| 918 | last_dt_change_1d = current_timestep_number_1d |
---|
| 919 | |
---|
| 920 | ENDIF |
---|
| 921 | |
---|
| 922 | END SUBROUTINE timestep_1d |
---|
| 923 | |
---|
| 924 | |
---|
| 925 | |
---|
| 926 | SUBROUTINE print_1d_model |
---|
| 927 | |
---|
| 928 | !------------------------------------------------------------------------------! |
---|
| 929 | ! Description: |
---|
| 930 | ! ------------ |
---|
| 931 | ! List output of profiles from the 1D-model |
---|
| 932 | !------------------------------------------------------------------------------! |
---|
| 933 | |
---|
| 934 | USE arrays_3d |
---|
| 935 | USE indices |
---|
| 936 | USE model_1d |
---|
| 937 | USE pegrid |
---|
| 938 | USE control_parameters |
---|
| 939 | |
---|
| 940 | IMPLICIT NONE |
---|
| 941 | |
---|
| 942 | |
---|
| 943 | INTEGER :: k |
---|
| 944 | |
---|
| 945 | |
---|
| 946 | IF ( myid == 0 ) THEN |
---|
| 947 | ! |
---|
| 948 | !-- Open list output file for profiles from the 1D-model |
---|
| 949 | CALL check_open( 17 ) |
---|
| 950 | |
---|
| 951 | ! |
---|
| 952 | !-- Write Header |
---|
| 953 | WRITE ( 17, 100 ) TRIM( run_description_header ), & |
---|
| 954 | TRIM( simulated_time_chr ) |
---|
| 955 | WRITE ( 17, 101 ) |
---|
| 956 | |
---|
| 957 | ! |
---|
| 958 | !-- Write the values |
---|
| 959 | WRITE ( 17, 102 ) |
---|
| 960 | WRITE ( 17, 101 ) |
---|
| 961 | DO k = nzt+1, nzb, -1 |
---|
| 962 | WRITE ( 17, 103) k, zu(k), u1d(k), v1d(k), pt_init(k), e1d(k), & |
---|
| 963 | rif1d(k), km1d(k), kh1d(k), l1d(k), zu(k), k |
---|
| 964 | ENDDO |
---|
| 965 | WRITE ( 17, 101 ) |
---|
| 966 | WRITE ( 17, 102 ) |
---|
| 967 | WRITE ( 17, 101 ) |
---|
| 968 | |
---|
| 969 | ! |
---|
| 970 | !-- Write buffer contents to disc immediately |
---|
[82] | 971 | CALL local_flush( 17 ) |
---|
[1] | 972 | |
---|
| 973 | ENDIF |
---|
| 974 | |
---|
| 975 | ! |
---|
| 976 | !-- Formats |
---|
| 977 | 100 FORMAT (//1X,A/1X,10('-')/' 1d-model profiles'/ & |
---|
| 978 | ' Time: ',A) |
---|
| 979 | 101 FORMAT (1X,79('-')) |
---|
| 980 | 102 FORMAT (' k zu u v pt e rif Km Kh ', & |
---|
| 981 | 'l zu k') |
---|
| 982 | 103 FORMAT (1X,I4,1X,F7.1,1X,F6.2,1X,F6.2,1X,F6.2,1X,F6.2,1X,F5.2,1X,F5.2, & |
---|
| 983 | 1X,F5.2,1X,F6.2,1X,F7.1,2X,I4) |
---|
| 984 | |
---|
| 985 | |
---|
| 986 | END SUBROUTINE print_1d_model |
---|