| 1 | !!---------------------------------------------------------------------- |
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| 2 | !! *** ldfdyn_c1d.h90 *** |
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| 3 | !!---------------------------------------------------------------------- |
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| 4 | |
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| 5 | !!---------------------------------------------------------------------- |
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| 6 | !! OPA 9.0 , LODYC-IPSL (2003) |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | |
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| 9 | SUBROUTINE ldf_dyn_c1d( ld_print ) |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | !! *** ROUTINE ldf_dyn_c1d *** |
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| 12 | !! |
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| 13 | !! ** Purpose : initializations of the horizontal ocean physics |
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| 14 | !! |
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| 15 | !! ** Method : 1D eddy viscosity coefficients ( depth ) |
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| 16 | !! ahm3, ahm4 never used |
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| 17 | !! biharmonic or harmonic operator : ahm1=ahm2 defined at T-level |
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| 18 | !! isopycnal or geopotential harmonic operator |
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| 19 | !! : ahm1 defined at T-level |
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| 20 | !! : ahm2 defined at w-level |
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| 21 | !! |
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| 22 | !!---------------------------------------------------------------------- |
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| 23 | !! * Arguments |
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| 24 | LOGICAL, INTENT (in) :: ld_print ! If true, output arrays on numout |
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| 25 | |
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| 26 | !! * Local variables |
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| 27 | REAL(wp) :: zdam, zwam, zm00, zm01, zmhf, zmhs |
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| 28 | REAL(wp) :: zahmf, zahms |
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| 29 | !!---------------------------------------------------------------------- |
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| 30 | |
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| 31 | IF(lwp) WRITE(numout,*) |
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| 32 | IF(lwp) WRITE(numout,*) 'inildf: 1D eddy viscosity coefficient' |
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| 33 | IF(lwp) WRITE(numout,*) '~~~~~~ --' |
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| 34 | IF(lwp) WRITE(numout,*) |
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| 35 | |
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| 36 | ! Set ahm1=ahm2 (always at t-level) |
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| 37 | ! ============= |
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| 38 | ! (USER: modify ahm1 following your desiderata) |
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| 39 | |
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| 40 | ! initialization of the profile |
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| 41 | ! ahms, ahmf: surface and bottom values |
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| 42 | zahms = ahm0 |
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| 43 | zahmf = ahm0/4. |
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| 44 | ! zdam, zwam: depth of the inflection pt and width of inflection |
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| 45 | zdam = -300. |
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| 46 | zwam = 300. |
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| 47 | ! computation coefficients |
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| 48 | zm00 = TANH( (0-zdam)/zwam ) |
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| 49 | zm01 = TANH( (-fsdept(1,1,jpk)-zdam)/zwam ) |
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| 50 | zmhf = (zahms-zahmf)/(zm00-zm01) |
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| 51 | zmhs = zahms-zmhf * zm00 |
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| 52 | |
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| 53 | ! set ahm1=ahm2 at T-level |
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| 54 | DO jk = 1, jpk |
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| 55 | ahm1(jk) = zmhs + zmhf * TANH( (-fsdept(1,1,jk)-zdam) / zwam ) |
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| 56 | ahm2(jk) = ahm1(jk) |
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| 57 | END DO |
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| 58 | |
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| 59 | ! Control print |
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| 60 | IF(lwp .AND. ld_print ) THEN |
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| 61 | WRITE(numout,*) |
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| 62 | WRITE(numout,*) ' ahm profile : ' |
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| 63 | WRITE(numout,*) |
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| 64 | WRITE(numout,9100) |
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| 65 | DO jk = 1, jpk |
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| 66 | WRITE(numout,9110) jk, ahm1(jk), fsdept(1,1,jk) |
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| 67 | END DO |
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| 68 | ENDIF |
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| 69 | 9100 FORMAT(' jk ahm ',' depth t-level ' ) |
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| 70 | 9110 FORMAT(i6,2f12.4,3x,2f12.4) |
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| 71 | |
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| 72 | |
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| 73 | ! Set ahm3=ahm4 (always defined at w-level) |
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| 74 | ! ============= |
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| 75 | |
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| 76 | ! define ahm3 from the same vertical profile used for ahm4 |
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| 77 | ! (always defined at w-level) |
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| 78 | ! (USER: modify ahm1 following your desiderata) |
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| 79 | |
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| 80 | DO jk = 1, jpk |
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| 81 | ahm3(jk) = zmhs + zmhf * TANH( (-fsdepw(1,1,jk)-zdam) / zwam ) |
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| 82 | ahm4(jk) = ahm3(jk) |
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| 83 | END DO |
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| 84 | |
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| 85 | ! Control print |
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| 86 | IF(lwp .AND. ld_print ) THEN |
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| 87 | WRITE(numout,*) |
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| 88 | WRITE(numout,*) ' ahm3=ahm4 profile : ' |
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| 89 | WRITE(numout,*) |
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| 90 | WRITE(numout,9120) |
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| 91 | DO jk = 1, jpk |
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| 92 | WRITE(numout,9110) jk, ahm3(jk), fsdepw(1,1,jk) |
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| 93 | END DO |
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| 94 | ENDIF |
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| 95 | 9120 FORMAT(' jk ahm ',' depth w-level ' ) |
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| 96 | |
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| 97 | END SUBROUTINE ldf_dyn_c1d |
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