| 1 | SUBROUTINE swap_timelevel |
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| 2 | |
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| 3 | !------------------------------------------------------------------------------! |
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| 4 | ! Current revisions: |
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| 5 | ! ----------------- |
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| 6 | ! |
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| 7 | ! |
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| 8 | ! Former revisions: |
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| 9 | ! ----------------- |
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| 10 | ! $Id: swap_timelevel.f90 1002 2012-09-13 15:12:24Z franke $ |
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| 11 | ! |
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| 12 | ! 1001 2012-09-13 14:08:46Z raasch |
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| 13 | ! all actions concerning leapfrog scheme removed |
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| 14 | ! |
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| 15 | ! 102 2007-07-27 09:09:17Z raasch |
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| 16 | ! swaping of uswst, vswst included |
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| 17 | ! |
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| 18 | ! 95 2007-06-02 16:48:38Z raasch |
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| 19 | ! Swaping of salinity |
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| 20 | ! |
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| 21 | ! 75 2007-03-22 09:54:05Z raasch |
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| 22 | ! moisture renamed humidity |
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| 23 | ! |
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| 24 | ! 19 2007-02-23 04:53:48Z raasch |
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| 25 | ! Swaping of top fluxes |
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| 26 | ! |
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| 27 | ! RCS Log replace by Id keyword, revision history cleaned up |
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| 28 | ! |
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| 29 | ! Revision 1.8 2004/01/28 15:28:18 raasch |
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| 30 | ! Swaping for Runge-Kutta schemes implemented |
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| 31 | ! |
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| 32 | ! Revision 1.1 2000/01/10 10:08:58 10:08:58 raasch (Siegfried Raasch) |
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| 33 | ! Initial revision |
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| 34 | ! |
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| 35 | ! |
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| 36 | ! Description: |
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| 37 | ! ------------ |
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| 38 | ! Swap of timelevels of variables after each timestep |
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| 39 | !------------------------------------------------------------------------------! |
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| 40 | |
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| 41 | USE arrays_3d |
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| 42 | USE cpulog |
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| 43 | USE interfaces |
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| 44 | USE control_parameters |
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| 45 | |
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| 46 | IMPLICIT NONE |
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| 47 | |
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| 48 | |
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| 49 | CALL cpu_log( log_point(28), 'swap_timelevel', 'start' ) |
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| 50 | |
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| 51 | ! |
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| 52 | !-- Incrementing timestep counter |
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| 53 | timestep_count = timestep_count + 1 |
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| 54 | |
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| 55 | ! |
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| 56 | !-- Swap of variables |
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| 57 | SELECT CASE ( MOD( timestep_count, 2 ) ) |
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| 58 | |
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| 59 | CASE ( 0 ) |
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| 60 | |
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| 61 | u => u_1; u_p => u_2 |
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| 62 | v => v_1; v_p => v_2 |
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| 63 | w => w_1; w_p => w_2 |
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| 64 | pt => pt_1; pt_p => pt_2 |
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| 65 | IF ( .NOT. constant_diffusion ) THEN |
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| 66 | e => e_1; e_p => e_2 |
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| 67 | ENDIF |
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| 68 | IF ( ocean ) THEN |
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| 69 | sa => sa_1; sa_p => sa_2 |
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| 70 | ENDIF |
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| 71 | IF ( humidity .OR. passive_scalar ) THEN |
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| 72 | q => q_1; q_p => q_2 |
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| 73 | ENDIF |
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| 74 | |
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| 75 | |
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| 76 | CASE ( 1 ) |
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| 77 | |
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| 78 | u => u_2; u_p => u_1 |
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| 79 | v => v_2; v_p => v_1 |
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| 80 | w => w_2; w_p => w_1 |
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| 81 | pt => pt_2; pt_p => pt_1 |
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| 82 | IF ( .NOT. constant_diffusion ) THEN |
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| 83 | e => e_2; e_p => e_1 |
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| 84 | ENDIF |
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| 85 | IF ( ocean ) THEN |
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| 86 | sa => sa_2; sa_p => sa_1 |
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| 87 | ENDIF |
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| 88 | IF ( humidity .OR. passive_scalar ) THEN |
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| 89 | q => q_2; q_p => q_1 |
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| 90 | ENDIF |
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| 91 | |
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| 92 | |
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| 93 | END SELECT |
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| 94 | |
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| 95 | CALL cpu_log( log_point(28), 'swap_timelevel', 'stop' ) |
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| 96 | |
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| 97 | END SUBROUTINE swap_timelevel |
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| 98 | |
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| 99 | |
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