| 1 | MODULE disvert_std_mod |
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| 2 | USE icosa |
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| 3 | IMPLICIT NONE |
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| 4 | PRIVATE |
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| 5 | |
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| 6 | REAL(rstd), SAVE, ALLOCATABLE,TARGET :: ap(:) |
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| 7 | !$OMP THREADPRIVATE(ap) |
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| 8 | REAL(rstd), SAVE, ALLOCATABLE,TARGET :: bp(:) |
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| 9 | !$OMP THREADPRIVATE(bp) |
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| 10 | REAL(rstd), SAVE, ALLOCATABLE,TARGET :: presnivs(:) |
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| 11 | !$OMP THREADPRIVATE(presnivs) |
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| 12 | REAL(rstd), SAVE, ALLOCATABLE,TARGET :: presinter(:) |
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| 13 | !$OMP THREADPRIVATE(presinter) |
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| 14 | |
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| 15 | |
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| 16 | PUBLIC :: init_disvert, ap, bp, presnivs, presinter |
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| 17 | |
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| 18 | CONTAINS |
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| 19 | |
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| 20 | SUBROUTINE init_disvert |
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| 21 | pa = .5*preff ! differs from 50000 if preff differs from 1e5 |
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| 22 | CALL getin('pa',pa) |
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| 23 | |
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| 24 | ALLOCATE(ap(llm+1)) |
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| 25 | ALLOCATE(bp(llm+1)) |
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| 26 | ALLOCATE(presnivs(llm)) |
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| 27 | ALLOCATE(presinter(llm+1)) |
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| 28 | |
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| 29 | CALL disvert(ap,bp,presnivs,presinter) |
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| 30 | |
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| 31 | END SUBROUTINE init_disvert |
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| 32 | |
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| 33 | |
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| 34 | SUBROUTINE disvert(ap,bp,presnivs,presinter) |
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| 35 | USE mpipara |
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| 36 | REAL(rstd),INTENT(OUT) :: ap(:) |
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| 37 | REAL(rstd),INTENT(OUT) :: bp(:) |
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| 38 | REAL(rstd),INTENT(OUT) :: presnivs(:) |
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| 39 | REAL(rstd),INTENT(OUT) :: presinter(:) |
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| 40 | |
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| 41 | REAL(rstd) :: dsig(llm) |
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| 42 | REAL(rstd) :: sig(llm+1) |
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| 43 | REAL(rstd) :: snorm |
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| 44 | INTEGER :: l |
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| 45 | |
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| 46 | snorm = 0. |
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| 47 | DO l = 1, llm |
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| 48 | dsig(l) = 1.0 + 7.0 * SIN( Pi*(l-0.5)/(llm+1) )**2 |
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| 49 | snorm = snorm + dsig(l) |
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| 50 | ENDDO |
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| 51 | |
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| 52 | DO l = 1, llm |
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| 53 | dsig(l) = dsig(l)/snorm |
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| 54 | ENDDO |
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| 55 | |
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| 56 | sig(llm+1) = 0. |
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| 57 | DO l = llm, 1, -1 |
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| 58 | sig(l) = sig(l+1) + dsig(l) |
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| 59 | ENDDO |
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| 60 | |
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| 61 | bp(llm+1) = 0. |
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| 62 | DO l = 1, llm |
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| 63 | bp(l) = EXP( 1. -1./( sig(l)*sig(l)) ) |
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| 64 | ap(l) = pa * ( sig(l) - bp(l) ) |
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| 65 | ENDDO |
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| 66 | bp(1)=1. |
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| 67 | ap(1)=0. |
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| 68 | ap(llm+1) = pa * ( sig(llm+1) - bp(llm+1) ) |
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| 69 | DO l = 1, llm |
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| 70 | presnivs(l) = 0.5 *( ap(l)+bp(l)*preff + ap(l+1)+bp(l+1)*preff ) |
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| 71 | ENDDO |
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| 72 | DO l=1, llm+1 |
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| 73 | presinter(l)= ap(l)+bp(l)*preff |
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| 74 | ENDDO |
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| 75 | |
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| 76 | ! tell the world about it |
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| 77 | IF (is_mpi_root) THEN |
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| 78 | !$OMP MASTER |
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| 79 | WRITE(*,*) "ap()=",ap |
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| 80 | WRITE(*,*) "bp()=",bp |
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| 81 | WRITE(*,*) "Approximative mid-layer pressure, assuming a surface pressure preff=",preff," Pa" |
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| 82 | WRITE(*,*) "and approximative mid-layer height, assuming an atmospheric scale height of ",scale_height/1000," (km)" |
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| 83 | DO l=1,llm |
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| 84 | WRITE(*,*) 'PRESNIVS(',l,')=',presnivs(l),' Z ~ ',log(preff/presnivs(l))*scale_height/1000, & |
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| 85 | ' DZ ~ ',scale_height/1000*log((ap(l)+bp(l)*preff)/ max(ap(l+1)+bp(l+1)*preff,1.e-10)) |
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| 86 | ENDDO |
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| 87 | !$OMP END MASTER |
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| 88 | ENDIF |
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| 89 | |
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| 90 | END SUBROUTINE disvert |
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| 91 | |
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| 92 | END MODULE disvert_std_mod |
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