| 1 | subroutine moistadj(ngrid, nlayer, nq, pt, pq, pdq, pplev, pplay, pdtmana, pdqmana, ptimestep, rneb) |
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| 2 | |
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| 3 | use watercommon_h, only: T_h2O_ice_liq, RLVTT, RCPD, RCPV, Psat_water, Lcpdqsat_water |
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| 4 | USE tracer_h, only: igcm_h2o_vap, igcm_h2o_ice |
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| 5 | use comcstfi_mod, only: r |
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| 6 | |
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| 7 | implicit none |
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| 8 | |
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| 9 | |
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| 10 | !===================================================================== |
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| 11 | ! |
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| 12 | ! Purpose |
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| 13 | ! ------- |
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| 14 | ! Calculates moist convective adjustment by the method of Manabe. |
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| 15 | ! |
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| 16 | ! Authors |
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| 17 | ! ------- |
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| 18 | ! Adapted from the LMDTERRE code by R. Wordsworth (2010) |
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| 19 | ! Original author Z. X. Li (1993) |
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| 20 | ! |
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| 21 | !===================================================================== |
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| 22 | |
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| 23 | INTEGER,INTENT(IN) :: ngrid, nlayer, nq |
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| 24 | |
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| 25 | REAL,INTENT(IN) :: pt(ngrid,nlayer) ! temperature (K) |
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| 26 | REAL,INTENT(IN) :: pq(ngrid,nlayer,nq) ! tracer (kg/kg) |
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| 27 | REAL,INTENT(IN) :: pdq(ngrid,nlayer,nq) |
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| 28 | REAL,INTENT(IN) :: pplev(ngrid,nlayer+1) ! inter-layer pressure (Pa) |
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| 29 | REAL,INTENT(IN) :: pplay(ngrid,nlayer) ! mid-layer pressure (Pa) |
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| 30 | REAL,INTENT(IN) :: ptimestep ! physics timestep (s) |
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| 31 | REAL,INTENT(OUT) :: pdqmana(ngrid,nlayer,nq) ! tracer tendencies (kg/kg.s-1) |
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| 32 | REAL,INTENT(OUT) :: pdtmana(ngrid,nlayer) ! temperature increment(K/s) |
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| 33 | REAL,INTENT(OUT) :: rneb(ngrid,nlayer) ! cloud fraction |
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| 34 | |
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| 35 | ! local variables |
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| 36 | REAL zt(ngrid,nlayer) ! temperature (K) |
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| 37 | REAL zq(ngrid,nlayer) ! humidite specifique (kg/kg) |
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| 38 | |
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| 39 | REAL d_t(ngrid,nlayer) ! temperature increment |
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| 40 | REAL d_q(ngrid,nlayer) ! incrementation pour vapeur d'eau |
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| 41 | REAL d_ql(ngrid,nlayer) ! incrementation pour l'eau liquide |
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| 42 | |
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| 43 | ! REAL t_coup |
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| 44 | ! PARAMETER (t_coup=234.0) |
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| 45 | REAL seuil_vap |
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| 46 | PARAMETER (seuil_vap=1.0E-10) |
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| 47 | |
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| 48 | ! Local variables |
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| 49 | INTEGER i, k, iq, nn |
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| 50 | INTEGER, PARAMETER :: niter = 1 |
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| 51 | INTEGER k1, k1p, k2, k2p |
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| 52 | LOGICAL itest(ngrid) |
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| 53 | REAL delta_q(ngrid, nlayer) |
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| 54 | DOUBLE PRECISION :: cp_new_t(nlayer), v_cptt(ngrid,nlayer) |
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| 55 | REAL cp_delta_t(nlayer) |
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| 56 | DOUBLE PRECISION :: v_cptj(nlayer), v_cptjk1, v_ssig |
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| 57 | REAL v_p, v_t, v_zqs,v_cptt2,v_pratio,v_dlnpsat |
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| 58 | REAL zqs(ngrid,nlayer), zdqs(ngrid,nlayer),zpsat(ngrid,nlayer),zdlnpsat(ngrid,nlayer) |
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| 59 | REAL zq1(ngrid), zq2(ngrid) |
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| 60 | DOUBLE PRECISION :: gamcpdz(ngrid,2:nlayer) |
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| 61 | DOUBLE PRECISION :: zdp, zdpm |
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| 62 | |
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| 63 | REAL zsat ! super-saturation |
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| 64 | REAL zflo ! flotabilite |
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| 65 | |
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| 66 | DOUBLE PRECISION :: local_q(ngrid,nlayer),local_t(ngrid,nlayer) |
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| 67 | |
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| 68 | REAL zdelta, zcor, zcvm5 |
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| 69 | |
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| 70 | REAL dEtot, dqtot, masse ! conservation diagnostics |
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| 71 | real dL1tot, dL2tot |
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| 72 | |
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| 73 | ! Indices of water vapour and water ice tracers |
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| 74 | INTEGER,SAVE :: i_h2o=0 ! water vapour |
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| 75 | INTEGER,SAVE :: i_ice=0 ! water ice |
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| 76 | !$OMP THREADPRIVATE(i_h2o,i_ice) |
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| 77 | |
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| 78 | LOGICAL,SAVE :: firstcall=.TRUE. |
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| 79 | !$OMP THREADPRIVATE(firstcall) |
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| 80 | |
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| 81 | IF (firstcall) THEN |
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| 82 | |
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| 83 | i_h2o=igcm_h2o_vap |
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| 84 | i_ice=igcm_h2o_ice |
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| 85 | |
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| 86 | write(*,*) "rain: i_ice=",i_ice |
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| 87 | write(*,*) " i_h2o=",i_h2o |
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| 88 | |
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| 89 | firstcall = .FALSE. |
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| 90 | ENDIF |
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| 91 | |
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| 92 | ! GCM -----> subroutine variables |
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| 93 | zq(1:ngrid,1:nlayer) = pq(1:ngrid,1:nlayer,i_h2o)+ pdq(1:ngrid,1:nlayer,i_h2o)*ptimestep |
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| 94 | zt(1:ngrid,1:nlayer) = pt(1:ngrid,1:nlayer) |
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| 95 | pdqmana(1:ngrid,1:nlayer,1:nq)=0.0 |
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| 96 | |
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| 97 | DO k = 1, nlayer |
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| 98 | DO i = 1, ngrid |
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| 99 | if(zq(i,k).lt.0.)then |
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| 100 | zq(i,k)=0.0 |
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| 101 | endif |
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| 102 | ENDDO |
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| 103 | ENDDO |
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| 104 | |
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| 105 | local_q(1:ngrid,1:nlayer) = zq(1:ngrid,1:nlayer) |
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| 106 | local_t(1:ngrid,1:nlayer) = zt(1:ngrid,1:nlayer) |
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| 107 | rneb(1:ngrid,1:nlayer) = 0.0 |
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| 108 | d_ql(1:ngrid,1:nlayer) = 0.0 |
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| 109 | d_t(1:ngrid,1:nlayer) = 0.0 |
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| 110 | d_q(1:ngrid,1:nlayer) = 0.0 |
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| 111 | |
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| 112 | ! Calculate v_cptt |
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| 113 | DO k = 1, nlayer |
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| 114 | DO i = 1, ngrid |
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| 115 | v_cptt(i,k) = RCPD * local_t(i,k) |
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| 116 | v_t = MAX(local_t(i,k),15.) |
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| 117 | v_p = pplay(i,k) |
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| 118 | |
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| 119 | call Psat_water(v_t,v_p,zpsat(i,k),zqs(i,k)) |
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| 120 | call Lcpdqsat_water(v_t,v_p,zpsat(i,k),zqs(i,k),zdqs(i,k),zdlnpsat(i,k)) |
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| 121 | ENDDO |
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| 122 | ENDDO |
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| 123 | |
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| 124 | ! Calculate Gamma * Cp * dz: (gamma is the critical gradient) |
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| 125 | DO k = 2, nlayer |
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| 126 | DO i = 1, ngrid |
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| 127 | zdp = pplev(i,k)-pplev(i,k+1) |
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| 128 | zdpm = pplev(i,k-1)-pplev(i,k) |
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| 129 | ! gamcpdz(i,k) = ( ( R/RCPD /(zdpm+zdp) * (v_cptt(i,k-1)*zdpm + v_cptt(i,k)*zdp) & |
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| 130 | ! + RLVTT /(zdpm+zdp) * (zqs(i,k-1)*zdpm + zqs(i,k)*zdp) ) & |
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| 131 | ! * (pplay(i,k-1)-pplay(i,k)) / pplev(i,k) ) & |
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| 132 | ! / (1.0+ (zdqs(i,k-1)*zdpm + zdqs(i,k)*zdp)/(zdpm+zdp) ) |
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| 133 | ! general case where water is not a trace gas (JL13) |
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| 134 | v_zqs = (zqs(i,k-1)*zdpm + zqs(i,k)*zdp)/(zdpm+zdp) |
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| 135 | v_cptt2 = (v_cptt(i,k-1)*zdpm + v_cptt(i,k)*zdp)/(zdpm+zdp) |
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| 136 | v_pratio = ((1.-zpsat(i,k-1)/pplay(i,k-1))*zdpm + (1.-zpsat(i,k)/pplay(i,k))*zdp)/(zdpm+zdp) |
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| 137 | v_dlnpsat = (zdlnpsat(i,k-1)*zdpm + zdlnpsat(i,k)*zdp)/(zdpm+zdp) |
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| 138 | gamcpdz(i,k) = ( (R/RCPD*v_cptt2*(1.- v_zqs) + RLVTT*v_zqs) * (pplay(i,k-1)-pplay(i,k))/pplev(i,k) ) & |
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| 139 | / (((1.- v_zqs) + v_zqs * RCPV/RCPD)*v_pratio + v_zqs * v_dlnpsat) |
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| 140 | ENDDO |
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| 141 | ENDDO |
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| 142 | |
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| 143 | !------------------------------------ modification of unstable profile |
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| 144 | DO 9999 i = 1, ngrid |
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| 145 | |
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| 146 | itest(i) = .FALSE. |
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| 147 | |
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| 148 | ! print*,'we in the loop' |
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| 149 | ! stop |
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| 150 | |
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| 151 | k1 = 0 |
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| 152 | k2 = 1 |
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| 153 | |
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| 154 | 810 CONTINUE ! look for k1, the base of the column |
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| 155 | k2 = k2 + 1 |
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| 156 | IF (k2 .GT. nlayer) GOTO 9999 |
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| 157 | zflo = v_cptt(i,k2-1) - v_cptt(i,k2) - gamcpdz(i,k2) |
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| 158 | zsat=(local_q(i,k2-1)-zqs(i,k2-1))*(pplev(i,k2-1)-pplev(i,k2)) & |
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| 159 | +(local_q(i,k2)-zqs(i,k2))*(pplev(i,k2)-pplev(i,k2+1)) |
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| 160 | |
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| 161 | IF ( zflo.LE.0.0 .OR. zsat.LE.0.0 ) GOTO 810 |
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| 162 | k1 = k2 - 1 |
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| 163 | itest(i) = .TRUE. |
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| 164 | |
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| 165 | 820 CONTINUE !! look for k2, the top of the column |
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| 166 | IF (k2 .EQ. nlayer) GOTO 821 |
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| 167 | k2p = k2 + 1 |
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| 168 | zsat=zsat+(pplev(i,k2p)-pplev(i,k2p+1))*(local_q(i,k2p)-zqs(i,k2p)) |
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| 169 | zflo = v_cptt(i,k2p-1) - v_cptt(i,k2p) - gamcpdz(i,k2p) |
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| 170 | |
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| 171 | IF (zflo.LE.0.0 .OR. zsat.LE.0.0) GOTO 821 |
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| 172 | k2 = k2p |
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| 173 | GOTO 820 |
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| 174 | 821 CONTINUE |
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| 175 | |
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| 176 | !------------------------------------------------------ local adjustment |
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| 177 | 830 CONTINUE ! actual adjustment |
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| 178 | Do nn=1,niter |
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| 179 | v_cptj(k1) = 0.0 |
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| 180 | zdp = pplev(i,k1)-pplev(i,k1+1) |
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| 181 | v_cptjk1 = ( (1.0+zdqs(i,k1))*(v_cptt(i,k1)+v_cptj(k1)) + RLVTT*(local_q(i,k1)-zqs(i,k1)) ) * zdp |
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| 182 | v_ssig = zdp * (1.0+zdqs(i,k1)) |
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| 183 | |
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| 184 | k1p = k1 + 1 |
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| 185 | DO k = k1p, k2 |
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| 186 | zdp = pplev(i,k)-pplev(i,k+1) |
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| 187 | v_cptj(k) = v_cptj(k-1) + gamcpdz(i,k) |
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| 188 | v_cptjk1 = v_cptjk1 + zdp * ( (1.0+zdqs(i, k))*(v_cptt(i,k)+v_cptj(k)) + RLVTT*(local_q(i,k)-zqs(i,k)) ) |
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| 189 | v_ssig = v_ssig + zdp *(1.0+zdqs(i,k)) |
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| 190 | ENDDO |
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| 191 | |
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| 192 | |
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| 193 | ! this right here is where the adjustment is done??? |
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| 194 | DO k = k1, k2 |
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| 195 | cp_new_t(k) = v_cptjk1/v_ssig - v_cptj(k) |
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| 196 | cp_delta_t(k) = cp_new_t(k) - v_cptt(i,k) |
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| 197 | v_cptt(i,k)=cp_new_t(k) |
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| 198 | local_q(i,k) = zqs(i,k) + zdqs(i,k)*cp_delta_t(k)/RLVTT |
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| 199 | local_t(i,k) = cp_new_t(k) / RCPD |
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| 200 | |
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| 201 | v_t = MAX(local_t(i,k),15.) |
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| 202 | v_p = pplay(i,k) |
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| 203 | |
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| 204 | call Psat_water(v_t,v_p,zpsat(i,k),zqs(i,k)) |
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| 205 | call Lcpdqsat_water(v_t,v_p,zpsat(i,k),zqs(i,k),zdqs(i,k),zdlnpsat(i,k)) |
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| 206 | |
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| 207 | ENDDO |
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| 208 | Enddo ! nn=1,niter |
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| 209 | |
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| 210 | |
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| 211 | !--------------------------------------------------- sounding downwards |
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| 212 | ! -- we refine the prognostic variables in |
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| 213 | ! -- the layer about to be adjusted |
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| 214 | |
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| 215 | ! DO k = k1, k2 |
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| 216 | ! v_cptt(i,k) = RCPD * local_t(i,k) |
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| 217 | ! v_t = local_t(i,k) |
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| 218 | ! v_p = pplay(i,k) |
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| 219 | ! |
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| 220 | ! call Psat_water(v_t,v_p,zpsat,zqs(i,k)) |
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| 221 | ! call Lcpdqsat_water(v_t,v_p,zpsat,zqs(i,k),zdqs(i,k)) |
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| 222 | ! ENDDO |
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| 223 | |
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| 224 | DO k = 2, nlayer |
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| 225 | zdpm = pplev(i,k-1) - pplev(i,k) |
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| 226 | zdp = pplev(i,k) - pplev(i,k+1) |
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| 227 | ! gamcpdz(i,k) = ( ( R/RCPD /(zdpm+zdp) * (v_cptt(i,k-1)*zdpm + v_cptt(i,k)*zdp) & |
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| 228 | ! + RLVTT /(zdpm+zdp) * (zqs(i,k-1)*zdpm + zqs(i,k)*zdp) ) & |
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| 229 | ! * (pplay(i,k-1)-pplay(i,k)) / pplev(i,k) ) & |
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| 230 | ! / (1.0+ (zdqs(i,k-1)*zdpm + zdqs(i,k)*zdp)/(zdpm+zdp) ) |
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| 231 | ! general case where water is not a trace gas (JL13) |
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| 232 | v_zqs = (zqs(i,k-1)*zdpm + zqs(i,k)*zdp)/(zdpm+zdp) |
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| 233 | v_cptt2 = (v_cptt(i,k-1)*zdpm + v_cptt(i,k)*zdp)/(zdpm+zdp) |
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| 234 | v_pratio = ((1.-zpsat(i,k-1)/pplay(i,k-1))*zdpm + (1.-zpsat(i,k)/pplay(i,k))*zdp)/(zdpm+zdp) |
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| 235 | v_dlnpsat = (zdlnpsat(i,k-1)*zdpm + zdlnpsat(i,k)*zdp)/(zdpm+zdp) |
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| 236 | gamcpdz(i,k) = ( (R/RCPD*v_cptt2*(1.- v_zqs) + RLVTT*v_zqs) * (pplay(i,k-1)-pplay(i,k))/pplev(i,k) ) & |
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| 237 | / (((1.- v_zqs) + v_zqs * RCPV/RCPD)*v_pratio + v_zqs * v_dlnpsat) |
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| 238 | ENDDO |
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| 239 | |
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| 240 | ! Test to see if we've reached the bottom |
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| 241 | |
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| 242 | IF (k1 .EQ. 1) GOTO 841 ! yes we have! |
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| 243 | zflo = v_cptt(i,k1-1) - v_cptt(i,k1) - gamcpdz(i,k1) |
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| 244 | zsat=(local_q(i,k1-1)-zqs(i,k1-1))*(pplev(i,k1-1)-pplev(i,k1)) & |
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| 245 | + (local_q(i,k1)-zqs(i,k1))*(pplev(i,k1)-pplev(i,k1+1)) |
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| 246 | IF (zflo.LE.0.0 .OR. zsat.LE.0.0) GOTO 841 ! yes we have! |
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| 247 | |
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| 248 | 840 CONTINUE |
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| 249 | k1 = k1 - 1 |
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| 250 | IF (k1 .EQ. 1) GOTO 830 ! GOTO 820 (a tester, Z.X.Li, mars 1995) |
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| 251 | zsat = zsat + (local_q(i,k1-1)-zqs(i,k1-1)) & |
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| 252 | *(pplev(i,k1-1)-pplev(i,k1)) |
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| 253 | zflo = v_cptt(i,k1-1) - v_cptt(i,k1) - gamcpdz(i,k1) |
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| 254 | IF (zflo.GT.0.0 .AND. zsat.GT.0.0) THEN |
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| 255 | GOTO 840 |
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| 256 | ELSE |
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| 257 | GOTO 830 ! GOTO 820 (a tester, Z.X.Li, mars 1995) |
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| 258 | ENDIF |
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| 259 | 841 CONTINUE |
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| 260 | |
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| 261 | GOTO 810 ! look for other layers higher up |
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| 262 | |
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| 263 | 9999 CONTINUE ! loop over all the points |
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| 264 | |
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| 265 | !----------------------------------------------------------------------- |
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| 266 | ! Determine the cloud fraction (hypothese: la nebulosite a lieu |
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| 267 | ! a l'endroit ou la vapeur d'eau est diminuee par l'ajustement): |
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| 268 | |
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| 269 | DO k = 1, nlayer |
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| 270 | DO i = 1, ngrid |
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| 271 | IF (itest(i)) THEN |
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| 272 | delta_q(i,k) = local_q(i,k) - zq(i,k) |
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| 273 | IF (delta_q(i,k).LT.0.) rneb(i,k) = 1.0 |
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| 274 | ENDIF |
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| 275 | ENDDO |
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| 276 | ENDDO |
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| 277 | |
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| 278 | ! Distribuer l'eau condensee en eau liquide nuageuse (hypothese: |
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| 279 | ! l'eau liquide est distribuee aux endroits ou la vapeur d'eau |
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| 280 | ! diminue et d'une maniere proportionnelle a cet diminution): |
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| 281 | |
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| 282 | DO i = 1, ngrid |
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| 283 | IF (itest(i)) THEN |
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| 284 | zq1(i) = 0.0 |
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| 285 | zq2(i) = 0.0 |
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| 286 | ENDIF |
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| 287 | ENDDO |
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| 288 | DO k = 1, nlayer |
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| 289 | DO i = 1, ngrid |
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| 290 | IF (itest(i)) THEN |
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| 291 | zdp = pplev(i,k)-pplev(i,k+1) |
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| 292 | zq1(i) = zq1(i) - delta_q(i,k) * zdp |
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| 293 | zq2(i) = zq2(i) - MIN(0.0, delta_q(i,k)) * zdp |
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| 294 | ENDIF |
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| 295 | ENDDO |
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| 296 | ENDDO |
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| 297 | DO k = 1, nlayer |
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| 298 | DO i = 1, ngrid |
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| 299 | IF (itest(i)) THEN |
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| 300 | IF (zq2(i).NE.0.0) d_ql(i,k) = - MIN(0.0,delta_q(i,k))*zq1(i)/zq2(i) |
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| 301 | ENDIF |
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| 302 | ENDDO |
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| 303 | ENDDO |
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| 304 | |
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| 305 | DO k = 1, nlayer |
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| 306 | DO i = 1, ngrid |
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| 307 | local_q(i, k) = MAX(local_q(i, k), seuil_vap) |
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| 308 | ENDDO |
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| 309 | ENDDO |
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| 310 | |
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| 311 | DO k = 1, nlayer |
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| 312 | DO i = 1, ngrid |
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| 313 | d_t(i,k) = local_t(i,k) - zt(i,k) |
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| 314 | d_q(i,k) = local_q(i,k) - zq(i,k) |
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| 315 | ENDDO |
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| 316 | ENDDO |
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| 317 | |
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| 318 | ! now subroutine -----> GCM variables |
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| 319 | DO k = 1, nlayer |
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| 320 | DO i = 1, ngrid |
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| 321 | |
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| 322 | pdtmana(i,k) = d_t(i,k)/ptimestep |
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| 323 | pdqmana(i,k,i_h2o) = d_q(i,k)/ptimestep |
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| 324 | pdqmana(i,k,i_ice) = d_ql(i,k)/ptimestep |
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| 325 | |
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| 326 | ENDDO |
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| 327 | ENDDO |
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| 328 | |
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| 329 | |
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| 330 | END |
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