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