1 | MODULE geopotential_mod |
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2 | IMPLICIT NONE |
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3 | PRIVATE |
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4 | |
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5 | PUBLIC :: compute_geopotential |
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6 | CONTAINS |
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7 | |
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8 | SUBROUTINE thetarhodz2geopot(f_ps,f_phis,f_theta_rhodz, f_p,f_theta,f_phi) ! FIXME : never called, dry only |
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9 | USE icosa |
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10 | USE omp_para |
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11 | USE pression_mod |
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12 | USE theta2theta_rhodz_mod |
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13 | TYPE(t_field), POINTER :: f_ps(:), f_phis(:), f_theta_rhodz(:), & ! IN |
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14 | f_p(:), f_theta(:), f_phi(:) ! OUT |
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15 | REAL(rstd),POINTER :: p(:,:), theta(:,:,:), theta_rhodz(:,:,:), & |
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16 | phi(:,:), phis(:), ps(:) |
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17 | INTEGER :: ind |
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18 | |
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19 | DO ind=1,ndomain |
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20 | IF (.NOT. assigned_domain(ind)) CYCLE |
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21 | CALL swap_dimensions(ind) |
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22 | CALL swap_geometry(ind) |
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23 | ps = f_ps(ind) |
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24 | p = f_p(ind) |
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25 | !$OMP BARRIER |
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26 | CALL compute_pression(ps,p,0) |
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27 | !$OMP BARRIER |
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28 | theta_rhodz = f_theta_rhodz(ind) |
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29 | theta = f_theta(ind) |
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30 | CALL compute_theta_rhodz2theta(ps, theta_rhodz,theta,0) |
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31 | phis = f_phis(ind) |
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32 | phi = f_phi(ind) |
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33 | CALL compute_geopotential(phis,p,theta,phi,0) |
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34 | END DO |
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35 | |
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36 | END SUBROUTINE thetarhodz2geopot |
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37 | |
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38 | |
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39 | SUBROUTINE compute_geopotential(phis,p,theta,phi,offset) |
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40 | USE icosa |
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41 | USE omp_para |
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42 | REAL(rstd),INTENT(IN) :: p(iim*jjm,llm+1) |
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43 | REAL(rstd),INTENT(IN) :: phis(iim*jjm) |
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44 | REAL(rstd),INTENT(IN) :: theta(iim*jjm,llm,nqdyn) |
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45 | REAL(rstd),INTENT(OUT) :: phi(iim*jjm,llm) |
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46 | INTEGER,INTENT(IN) :: offset |
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47 | INTEGER :: i,j,ij,l |
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48 | REAL(rstd) :: mg_ij, p_ij, exner_ij |
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49 | |
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50 | !!! Compute geopotential |
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51 | ! LMD-Z : dh=pi.dtheta-vdp => (1/rho) dp = pi.dtheta - d(h=pi.theta) = -dtheta.gradpi |
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52 | ! g.dz = -(1/rho)dp = theta.gradpi |
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53 | ! direct (variational) |
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54 | ! dz = -(1/rho.g)dp, rho = RT/p = (R/C_p).theta.pi/p |
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55 | |
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56 | ! for first layer |
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57 | |
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58 | ! flush pks, pk thetha, phis |
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59 | !$OMP BARRIER |
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60 | IF(is_omp_level_master) THEN |
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61 | DO j=jj_begin-offset,jj_end+offset |
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62 | DO i=ii_begin-offset,ii_end+offset |
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63 | ij=(j-1)*iim+i |
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64 | phi( ij,1 ) = phis( ij ) |
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65 | END DO |
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66 | END DO |
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67 | |
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68 | ! for other layers |
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69 | DO l = 1, llm-1 |
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70 | DO j=jj_begin-offset,jj_end+offset |
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71 | DO i=ii_begin-offset,ii_end+offset |
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72 | ij=(j-1)*iim+i |
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73 | mg_ij = p(ij,l+1)-p(ij,l) |
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74 | ! v=RT/p=(kappa.cpp).Theta.(p/preff)**kappa /p |
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75 | p_ij=.5*(p(ij,l+1)+p(ij,l)) |
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76 | exner_ij = (p_ij/preff)**kappa ! NB : no cpp factor |
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77 | phi(ij,l+1) = phi(ij,l) + (kappa*cpp)*mg_ij*theta(ij,l,1)*exner_ij/p_ij |
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78 | ENDDO |
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79 | ENDDO |
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80 | ENDDO |
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81 | ENDIF |
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82 | ! flush phi |
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83 | !$OMP BARRIER |
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84 | |
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85 | END SUBROUTINE compute_geopotential |
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86 | |
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87 | END MODULE geopotential_mod |
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