| 1 | MODULE sedfunc |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE sedsol *** |
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| 4 | !! Sediment : dissolution and reaction in pore water related |
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| 5 | !! related to organic matter |
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| 6 | !! Diffusion of solutes in pore water |
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| 7 | !!===================================================================== |
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| 8 | !! * Modules used |
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| 9 | USE sed ! sediment global variable |
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| 10 | USE sed_oce |
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| 11 | USE sedini |
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| 12 | USE seddsr |
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| 13 | USE sedmat |
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| 14 | USE lib_mpp ! distribued memory computing library |
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| 15 | USE lib_fortran |
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| 16 | |
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| 17 | IMPLICIT NONE |
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| 18 | PRIVATE |
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| 19 | |
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| 20 | PUBLIC sed_func |
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| 21 | |
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| 22 | !! * Module variables |
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| 23 | |
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| 24 | !! $Id: sedsol.F90 5215 2015-04-15 16:11:56Z nicolasmartin $ |
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| 25 | CONTAINS |
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| 26 | |
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| 27 | SUBROUTINE sed_func( NEQ, JINDEX, T, X, fval0 ) |
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| 28 | !!---------------------------------------------------------------------- |
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| 29 | !! *** ROUTINE sed_sol *** |
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| 30 | !! |
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| 31 | !! ** Purpose : computes pore water diffusion and reactions |
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| 32 | !! |
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| 33 | !! ** Methode : Computation of the redox and dissolution reactions |
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| 34 | !! in the sediment. |
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| 35 | !! The main redox reactions are solved in sed_dsr whereas |
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| 36 | !! the secondary reactions are solved in sed_dsr_redoxb. |
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| 37 | !! Inorganic dissolution is solved in sed_inorg |
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| 38 | !! A strand spliting approach is being used here (see |
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| 39 | !! sed_dsr_redoxb for more information). |
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| 40 | !! Diffusive fluxes are computed in sed_diff |
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| 41 | !! |
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| 42 | !! History : |
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| 43 | !! ! 98-08 (E. Maier-Reimer, Christoph Heinze ) Original code |
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| 44 | !! ! 04-10 (N. Emprin, M. Gehlen ) f90 |
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| 45 | !! ! 06-04 (C. Ethe) Re-organization |
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| 46 | !! ! 19-08 (O. Aumont) Debugging and improvement of the model. |
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| 47 | !! The original method is replaced by a |
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| 48 | !! Strand splitting method which deals |
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| 49 | !! well with stiff reactions. |
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| 50 | !!---------------------------------------------------------------------- |
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| 51 | !! Arguments |
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| 52 | INTEGER, INTENT(in) :: NEQ, JINDEX |
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| 53 | REAL(wp), INTENT(in) :: T |
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| 54 | REAL, DIMENSION(NEQ), INTENT(in) :: X |
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| 55 | REAL, DIMENSION(NEQ), INTENT(out) :: fval0 |
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| 56 | ! --- local variables |
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| 57 | INTEGER :: ji, jk, js, jn ! dummy looop indices |
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| 58 | !! |
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| 59 | !!---------------------------------------------------------------------- |
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| 60 | |
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| 61 | IF( ln_timing ) CALL timing_start('sed_func') |
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| 62 | ! |
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| 63 | ji = JINDEX |
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| 64 | pwcpa(ji,:,:) = 0. |
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| 65 | solcpa(ji,:,:) = 0. |
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| 66 | |
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| 67 | do jn = 1, NEQ |
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| 68 | jk = jarr(jn,1) |
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| 69 | js = jarr(jn,2) |
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| 70 | IF (js <= jpwat) THEN |
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| 71 | pwcp(ji,jk,js) = X(jn) * 1E-6 |
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| 72 | ELSE |
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| 73 | solcp(ji,jk,js-jpwat) = X(jn) * 1E-6 |
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| 74 | ENDIF |
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| 75 | END DO |
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| 76 | |
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| 77 | CALL sed_dsr ( ji ) ! Redox reactions |
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| 78 | ! Computes diffusive fluxes |
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| 79 | DO jn = 1, jpvode |
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| 80 | js = jsvode(jn) |
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| 81 | IF (js <= jpwat) CALL sed_mat_dsr( ji, js, dtsed ) |
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| 82 | END DO |
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| 83 | |
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| 84 | do jn = 1, NEQ |
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| 85 | jk = jarr(jn,1) |
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| 86 | js = jarr(jn,2) |
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| 87 | IF (js <= jpwat) THEN |
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| 88 | fval0(jn) = pwcpa(ji,jk,js) * 1E6 / dtsed |
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| 89 | ELSE |
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| 90 | fval0(jn) = solcpa(ji,jk,js-jpwat) * 1E6 / dtsed |
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| 91 | ENDIF |
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| 92 | END DO |
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| 93 | |
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| 94 | IF( ln_timing ) CALL timing_stop('sed_func') |
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| 95 | ! |
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| 96 | END SUBROUTINE sed_func |
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| 97 | |
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| 98 | END MODULE sedfunc |
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