| 1 | SUBROUTINE disturb_heatflux |
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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: disturb_heatflux.f90 484 2010-02-05 07:36:54Z raasch $ |
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| 11 | ! RCS Log replace by Id keyword, revision history cleaned up |
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| 12 | ! |
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| 13 | ! Revision 1.7 2006/08/04 14:35:07 raasch |
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| 14 | ! Additional parameter in function random_gauss which limits the range of the |
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| 15 | ! created random numbers, izuf renamed iran |
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| 16 | ! |
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| 17 | ! Revision 1.1 1998/03/25 20:03:47 raasch |
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| 18 | ! Initial revision |
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| 19 | ! |
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| 20 | ! |
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| 21 | ! Description: |
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| 22 | ! ------------ |
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| 23 | ! Generate random, normally distributed heatflux values and store them as the |
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| 24 | ! near-surface heatflux. |
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| 25 | ! On parallel computers, too, this random generator is called at all grid points |
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| 26 | ! of the total array in order to guarantee the same random distribution of the |
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| 27 | ! total array regardless of the number of processors used during the model run. |
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| 28 | !------------------------------------------------------------------------------! |
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| 29 | |
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| 30 | USE arrays_3d |
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| 31 | USE control_parameters |
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| 32 | USE cpulog |
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| 33 | USE grid_variables |
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| 34 | USE indices |
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| 35 | USE interfaces |
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| 36 | |
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| 37 | IMPLICIT NONE |
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| 38 | |
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| 39 | INTEGER :: i, j |
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| 40 | REAL :: random_gauss, randomnumber |
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| 41 | |
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| 42 | |
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| 43 | CALL cpu_log( log_point(23), 'disturb_heatflux', 'start' ) |
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| 44 | |
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| 45 | ! |
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| 46 | !-- Generate random disturbances and store them |
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| 47 | DO i = 0, nx |
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| 48 | DO j = 0, ny |
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| 49 | randomnumber = random_gauss( iran, 5.0 ) |
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| 50 | IF ( nxl <= i .AND. nxr >= i .AND. nys <= j .AND. nyn >= j ) & |
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| 51 | THEN |
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| 52 | IF ( nzb_s_inner(j,i) == 0 ) THEN |
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| 53 | shf(j,i) = randomnumber * surface_heatflux |
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| 54 | ! |
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| 55 | !-- Over topography surface_heatflux is replaced by wall_heatflux(0) |
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| 56 | shf(j,i) = randomnumber * wall_heatflux(0) |
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| 57 | ELSE |
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| 58 | ENDIF |
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| 59 | ENDIF |
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| 60 | ENDDO |
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| 61 | ENDDO |
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| 62 | |
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| 63 | ! |
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| 64 | !-- Exchange lateral boundary conditions for the heatflux array |
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| 65 | CALL exchange_horiz_2d( shf ) |
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| 66 | |
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| 67 | CALL cpu_log( log_point(23), 'disturb_heatflux', 'stop' ) |
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| 68 | |
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| 69 | |
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| 70 | END SUBROUTINE disturb_heatflux |
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