| 1 | MODULE disvert_dcmip31_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 :: ap,bp,presnivs,presinter,init_disvert |
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| 17 | |
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| 18 | CONTAINS |
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| 19 | !========================================================================= |
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| 20 | |
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| 21 | SUBROUTINE init_disvert |
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| 22 | ALLOCATE(ap(llm+1)) |
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| 23 | ALLOCATE(bp(llm+1)) |
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| 24 | ALLOCATE(presnivs(llm)) |
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| 25 | ALLOCATE(presinter(llm+1)) |
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| 26 | CALL disvert(ap,bp,presnivs,presinter) |
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| 27 | END SUBROUTINE init_disvert |
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| 28 | |
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| 29 | SUBROUTINE disvert(ap,bp,presnivs,presinter) |
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| 30 | USE mpipara |
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| 31 | REAL(rstd),INTENT(OUT) :: ap(:) |
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| 32 | REAL(rstd),INTENT(OUT) :: bp(:) |
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| 33 | REAL(rstd),INTENT(OUT) :: presnivs(:) |
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| 34 | REAL(rstd),INTENT(OUT) :: presinter(:) |
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| 35 | ! reads from run.def : ncar_dz, ncar_T0, ncar_p0, ncar_disvert_c |
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| 36 | INTEGER :: l,cindx |
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| 37 | REAL(rstd) :: GG, eta_top, eta |
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| 38 | REAL(rstd),PARAMETER :: N=0.01 ! Brunt-Vaisala frequency (s-1) |
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| 39 | REAL(rstd),PARAMETER :: Teq=300. ! Surface temperature at the equator (K) |
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| 40 | REAL(rstd),PARAMETER :: Peq=1e5 ! Reference surface pressure at the equator (hPa) |
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| 41 | |
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| 42 | ncar_dz=400 ; CALL getin('ncar_dz',ncar_dz); |
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| 43 | cindx=1 ; CALL getin('ncar_disvert_c',cindx) |
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| 44 | |
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| 45 | GG=(g/N)**2/cpp |
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| 46 | |
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| 47 | eta_top = (GG/Teq*exp(-N**2*llm*ncar_dz/g)+1-GG/Teq)**(1./kappa) |
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| 48 | IF (is_mpi_root) PRINT *,'eta_top ->', eta_top |
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| 49 | do l = 1,llm+1 |
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| 50 | eta = (GG/Teq*exp(-N**2*(l-1)*ncar_dz/g)+1-GG/Teq)**(1./kappa) |
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| 51 | IF (is_mpi_root) PRINT *,'eta ->', eta |
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| 52 | bp(l) = ((eta - eta_top)/(1 - eta_top))**cindx |
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| 53 | ap(l) = preff * ( eta - bp(l) ) |
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| 54 | ENDDO |
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| 55 | IF (is_mpi_root) PRINT *,'eta ->', eta |
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| 56 | bp(1)=1. |
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| 57 | ap(1)=0. |
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| 58 | bp(llm+1) = 0 |
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| 59 | |
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| 60 | DO l = 1, llm |
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| 61 | presnivs(l) = 0.5 *( ap(l)+bp(l)*preff + ap(l+1)+bp(l+1)*preff ) |
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| 62 | ENDDO |
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| 63 | DO l=1, llm+1 |
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| 64 | presinter(l)= ap(l)+bp(l)*preff |
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| 65 | ENDDO |
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| 66 | |
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| 67 | |
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| 68 | !$OMP MASTER |
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| 69 | IF (is_mpi_root) PRINT *, 'Vertical placement of model levels according to DCMIP Appendix E.3' |
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| 70 | IF (is_mpi_root) PRINT *, 'Parameters : ncar_dz=', ncar_dz, ' ncar_p0=',ncar_p0, ' ncar_disvert_c=',cindx |
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| 71 | IF (is_mpi_root) PRINT *, 'Isothermal amtosphere with ncar_T0=',ncar_T0 |
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| 72 | !$OMP END MASTER |
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| 73 | |
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| 74 | END SUBROUTINE disvert |
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| 75 | |
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| 76 | END MODULE disvert_dcmip31_mod |
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