| 1 | MODULE disvert_dcmip31_mod |
|---|
| 2 | USE icosa |
|---|
| 3 | |
|---|
| 4 | REAL(rstd), SAVE, ALLOCATABLE,TARGET :: ap(:) |
|---|
| 5 | !$OMP THREADPRIVATE(ap) |
|---|
| 6 | REAL(rstd), SAVE, ALLOCATABLE,TARGET :: bp(:) |
|---|
| 7 | !$OMP THREADPRIVATE(bp) |
|---|
| 8 | REAL(rstd), SAVE, ALLOCATABLE,TARGET :: presnivs(:) |
|---|
| 9 | !$OMP THREADPRIVATE(presnivs) |
|---|
| 10 | |
|---|
| 11 | CONTAINS |
|---|
| 12 | !========================================================================= |
|---|
| 13 | |
|---|
| 14 | SUBROUTINE init_disvert |
|---|
| 15 | USE icosa |
|---|
| 16 | IMPLICIT NONE |
|---|
| 17 | |
|---|
| 18 | ALLOCATE(ap(llm+1)) |
|---|
| 19 | ALLOCATE(bp(llm+1)) |
|---|
| 20 | ALLOCATE(presnivs(llm)) |
|---|
| 21 | |
|---|
| 22 | CALL disvert(ap,bp,presnivs) |
|---|
| 23 | |
|---|
| 24 | END SUBROUTINE init_disvert |
|---|
| 25 | |
|---|
| 26 | SUBROUTINE disvert(ap,bp,presnivs) |
|---|
| 27 | USE icosa |
|---|
| 28 | USE mpipara |
|---|
| 29 | IMPLICIT NONE |
|---|
| 30 | REAL(rstd),INTENT(OUT) :: ap(:) |
|---|
| 31 | REAL(rstd),INTENT(OUT) :: bp(:) |
|---|
| 32 | REAL(rstd),INTENT(OUT) :: presnivs(:) |
|---|
| 33 | ! reads from run.def : ncar_dz, ncar_T0, ncar_p0, ncar_disvert_c |
|---|
| 34 | INTEGER :: l,cindx |
|---|
| 35 | REAL(rstd) :: GG, eta_top, eta |
|---|
| 36 | REAL(rstd),PARAMETER :: N=0.01 ! Brunt-Vaisala frequency (s-1) |
|---|
| 37 | REAL(rstd),PARAMETER :: Teq=300. ! Surface temperature at the equator (K) |
|---|
| 38 | REAL(rstd),PARAMETER :: Peq=1e5 ! Reference surface pressure at the equator (hPa) |
|---|
| 39 | |
|---|
| 40 | ncar_dz=400 ; CALL getin('ncar_dz',ncar_dz); |
|---|
| 41 | cindx=1 ; CALL getin('ncar_disvert_c',cindx) |
|---|
| 42 | |
|---|
| 43 | GG=(g/N)**2/cpp |
|---|
| 44 | |
|---|
| 45 | eta_top = (GG/Teq*exp(-N**2*llm*ncar_dz/g)+1-GG/Teq)**(1./kappa) |
|---|
| 46 | IF (is_mpi_root) PRINT *,'eta_top ->', eta_top |
|---|
| 47 | do l = 1,llm+1 |
|---|
| 48 | eta = (GG/Teq*exp(-N**2*(l-1)*ncar_dz/g)+1-GG/Teq)**(1./kappa) |
|---|
| 49 | IF (is_mpi_root) PRINT *,'eta ->', eta |
|---|
| 50 | bp(l) = ((eta - eta_top)/(1 - eta_top))**cindx |
|---|
| 51 | ap(l) = preff * ( eta - bp(l) ) |
|---|
| 52 | ENDDO |
|---|
| 53 | IF (is_mpi_root) PRINT *,'eta ->', eta |
|---|
| 54 | bp(1)=1. |
|---|
| 55 | ap(1)=0. |
|---|
| 56 | bp(llm+1) = 0 |
|---|
| 57 | |
|---|
| 58 | DO l = 1, llm |
|---|
| 59 | presnivs(l) = 0.5 *( ap(l)+bp(l)*preff + ap(l+1)+bp(l+1)*preff ) |
|---|
| 60 | ENDDO |
|---|
| 61 | |
|---|
| 62 | !$OMP MASTER |
|---|
| 63 | IF (is_mpi_root) PRINT *, 'Vertical placement of model levels according to DCMIP Appendix E.3' |
|---|
| 64 | IF (is_mpi_root) PRINT *, 'Parameters : ncar_dz=', ncar_dz, ' ncar_p0=',ncar_p0, ' ncar_disvert_c=',cindx |
|---|
| 65 | IF (is_mpi_root) PRINT *, 'Isothermal amtosphere with ncar_T0=',ncar_T0 |
|---|
| 66 | !$OMP END MASTER |
|---|
| 67 | |
|---|
| 68 | END SUBROUTINE disvert |
|---|
| 69 | |
|---|
| 70 | END MODULE disvert_dcmip31_mod |
|---|
