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 | |
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13 | PUBLIC :: ap,bp,presnivs, init_disvert |
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14 | |
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15 | CONTAINS |
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16 | !========================================================================= |
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17 | |
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18 | SUBROUTINE init_disvert |
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19 | ALLOCATE(ap(llm+1)) |
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20 | ALLOCATE(bp(llm+1)) |
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21 | ALLOCATE(presnivs(llm)) |
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22 | CALL disvert(ap,bp,presnivs) |
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23 | END SUBROUTINE init_disvert |
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24 | |
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25 | SUBROUTINE disvert(ap,bp,presnivs) |
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26 | USE mpipara |
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27 | REAL(rstd),INTENT(OUT) :: ap(:) |
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28 | REAL(rstd),INTENT(OUT) :: bp(:) |
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29 | REAL(rstd),INTENT(OUT) :: presnivs(:) |
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30 | ! reads from run.def : ncar_dz, ncar_T0, ncar_p0, ncar_disvert_c |
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31 | INTEGER :: l,cindx |
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32 | REAL(rstd) :: GG, eta_top, eta |
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33 | REAL(rstd),PARAMETER :: N=0.01 ! Brunt-Vaisala frequency (s-1) |
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34 | REAL(rstd),PARAMETER :: Teq=300. ! Surface temperature at the equator (K) |
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35 | REAL(rstd),PARAMETER :: Peq=1e5 ! Reference surface pressure at the equator (hPa) |
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36 | |
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37 | ncar_dz=400 ; CALL getin('ncar_dz',ncar_dz); |
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38 | cindx=1 ; CALL getin('ncar_disvert_c',cindx) |
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39 | |
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40 | GG=(g/N)**2/cpp |
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41 | |
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42 | eta_top = (GG/Teq*exp(-N**2*llm*ncar_dz/g)+1-GG/Teq)**(1./kappa) |
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43 | IF (is_mpi_root) PRINT *,'eta_top ->', eta_top |
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44 | do l = 1,llm+1 |
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45 | eta = (GG/Teq*exp(-N**2*(l-1)*ncar_dz/g)+1-GG/Teq)**(1./kappa) |
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46 | IF (is_mpi_root) PRINT *,'eta ->', eta |
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47 | bp(l) = ((eta - eta_top)/(1 - eta_top))**cindx |
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48 | ap(l) = preff * ( eta - bp(l) ) |
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49 | ENDDO |
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50 | IF (is_mpi_root) PRINT *,'eta ->', eta |
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51 | bp(1)=1. |
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52 | ap(1)=0. |
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53 | bp(llm+1) = 0 |
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54 | |
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55 | DO l = 1, llm |
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56 | presnivs(l) = 0.5 *( ap(l)+bp(l)*preff + ap(l+1)+bp(l+1)*preff ) |
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57 | ENDDO |
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58 | |
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59 | !$OMP MASTER |
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60 | IF (is_mpi_root) PRINT *, 'Vertical placement of model levels according to DCMIP Appendix E.3' |
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61 | IF (is_mpi_root) PRINT *, 'Parameters : ncar_dz=', ncar_dz, ' ncar_p0=',ncar_p0, ' ncar_disvert_c=',cindx |
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62 | IF (is_mpi_root) PRINT *, 'Isothermal amtosphere with ncar_T0=',ncar_T0 |
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63 | !$OMP END MASTER |
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64 | |
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65 | END SUBROUTINE disvert |
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66 | |
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67 | END MODULE disvert_dcmip31_mod |
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