| 1 | MODULE gwprofil_mod |
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| 2 | |
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| 3 | IMPLICIT NONE |
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| 4 | |
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| 5 | CONTAINS |
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| 6 | |
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| 7 | SUBROUTINE GWPROFIL( ngrid, nlayer, kgwd ,kdx, ktest, & |
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| 8 | IKCRITH, ICRIT, IKENVH, IKNU,IKNU2,pplev, & |
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| 9 | ZRHO, BV, ZVPH, PRI,zdmod, psig , pvar, & |
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| 10 | !not used variables |
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| 11 | !IKCRIT,ZTAUf,ZTFR,znu,pgam, |
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| 12 | ! in-output |
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| 13 | ZTAU ) |
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| 14 | |
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| 15 | !--------------------------------------------------------------------------- |
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| 16 | ! THe stress profile for gravity waves is computed as follows: |
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| 17 | ! It is constant (no GWD) at the levels between the ground and |
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| 18 | ! the top of the blocked layer (IKENVH). It decreases linearly |
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| 19 | ! with heights from the top of the blocked layer to 3*varor(IKNU) |
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| 20 | ! to simulates lee waves or nonlinear gravity wave breaking. |
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| 21 | ! Above it is constant, except when the wave encounters a critical |
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| 22 | ! level(ICRIT) or when it breaks.! |
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| 23 | ! PASSAGE OF THE NEW GWDRAG TO I.F.S. (F. LOTT, 22/11/93) |
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| 24 | ! REFERENCE. |
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| 25 | ! SEE ECMWF RESEARCH DEPARTMENT DOCUMENTATION OF THE "I.F.S." |
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| 26 | ! MODIFICATIONS. |
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| 27 | ! Rewrited by J.Liu 03/03/2022 |
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| 28 | !--------------------------------------------------------------------------- |
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| 29 | |
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| 30 | use dimradmars_mod, only: ndomainsz |
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| 31 | use yoegwd_h, only: gkdrag, grcrit, gssec, gtsec |
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| 32 | |
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| 33 | implicit none |
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| 34 | |
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| 35 | ! 0. DECLARATIONS: |
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| 36 | ! 0.1 ARGUMENTS |
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| 37 | integer, intent(in):: ngrid ! Number of atmospheric columns |
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| 38 | integer, intent(in):: nlayer ! Number of atmospheric layers |
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| 39 | INTEGER, intent(in) :: kgwd ! Number of points at which the scheme is called |
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| 40 | ! INTEGER, INTENT(IN) :: IKCRIT(ndomainsz ) ! Top of low level flow height (not used) |
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| 41 | INTEGER, INTENT(IN) :: IKCRITH(ndomainsz ) ! dynamical mixing height for the breaking of gravity waves |
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| 42 | INTEGER, INTENT(IN) :: ICRIT(ndomainsz ) ! Critical layer where orographic GW breaks |
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| 43 | INTEGER, INTENT(IN) :: kdx(ndomainsz ) ! Points at which to call the scheme |
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| 44 | INTEGER, INTENT(IN) :: ktest(ndomainsz ) ! Map of calling points |
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| 45 | INTEGER, INTENT(IN) :: IKENVH(ndomainsz ) ! Top of the blocked layer |
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| 46 | INTEGER, INTENT(IN) :: IKNU(ndomainsz ) ! 4*pvar layer |
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| 47 | INTEGER, INTENT(IN) :: IKNU2(ndomainsz ) ! 3*pvar layer |
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| 48 | |
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| 49 | REAL, INTENT(IN):: pplev(ndomainsz ,nlayer+1) ! Pressure at 1/2 levels(Pa) |
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| 50 | REAL, INTENT(IN):: BV(ndomainsz ,nlayer+1) ! Brunt–Väisälä frequency at 1/2 level (output from OROSETUP input for GWSTRESS and GWPROFIL) |
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| 51 | REAL, INTENT(IN):: ZRHO (ndomainsz ,nlayer+1) ! Atmospheric density at 1/2 level |
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| 52 | REAL, INTENT(IN):: ZVPH (ndomainsz ,nlayer+1) ! SUB-GRID SCALE STANDARD DEVIATION at 1/2 level |
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| 53 | REAL, INTENT(IN):: PRI (ndomainsz ,nlayer+1) ! Mean flow richardson number at 1/2 level |
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| 54 | ! REAL, INTENT(IN):: ZTFR (ndomainsz ) ! not used |
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| 55 | ! REAL, INTENT(IN):: ZTAUf (ndomainsz ,nlayer+1) ! not used |
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| 56 | ! |
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| 57 | REAL, INTENT(IN):: zdmod (ndomainsz ) |
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| 58 | ! REAL, INTENT(IN):: znu (ndomainsz ) ! not used |
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| 59 | REAL, INTENT(IN):: psig(ndomainsz ) ! Sub-grid scale slope |
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| 60 | ! REAL, INTENT(IN):: pgam(ndomainsz ) ! Sub-grid scale anisotropy(not used) |
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| 61 | REAL, INTENT(IN):: pvar(ndomainsz ) ! Sub-grid scale standard deviation |
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| 62 | REAL, INTENT(inout):: ZTAU(ndomainsz ,nlayer+1) ! Gravity waves induced stress |
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| 63 | |
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| 64 | ! 0.2 LOCAL ARRAYS |
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| 65 | real zsqr,zalfa,zriw,zalpha,zb,zdel,zdz2n,zdelp,zdelpt |
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| 66 | integer ji,jk,jl,ilevh |
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| 67 | REAL ZDZ2 (ndomainsz ,nlayer) , ZNORM(ndomainsz ) , zoro(ndomainsz ) |
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| 68 | REAL Z_TAU (ndomainsz ,nlayer+1) |
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| 69 | |
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| 70 | !----------------------------------------------------------------------- |
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| 71 | !* 1. Initialization |
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| 72 | !----------------------------------------------------------------------- |
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| 73 | ! kidia=1 |
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| 74 | ! kfdia=ngrid |
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| 75 | 100 CONTINUE |
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| 76 | ! 1.1 Computional constants . |
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| 77 | ilevh=nlayer/3 |
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| 78 | |
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| 79 | DO ji=1,kgwd |
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| 80 | jl=kdx(ji) |
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| 81 | Zoro(JL)=psig(JL)*zdmod(JL)/4./max(pvar(jl),1.0) |
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| 82 | Z_TAU(JL,IKNU(JL)+1)=ZTAU(JL,IKNU(JL)+1) |
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| 83 | Z_TAU(JL,nlayer+1)=ZTAU(JL,nlayer+1) |
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| 84 | ENDDO |
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| 85 | |
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| 86 | ! all start here with this long loop |
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| 87 | DO JK=nlayer,2,-1 |
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| 88 | ! 4.1 Constant wave stress until top of the blocking layer |
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| 89 | 410 CONTINUE |
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| 90 | DO ji=1,kgwd |
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| 91 | jl=kdx(ji) |
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| 92 | IF(JK.GE.IKNU2(JL)) THEN |
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| 93 | ZTAU(JL,JK)=Z_TAU(JL,nlayer+1) |
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| 94 | ENDIF |
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| 95 | ENDDO |
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| 96 | |
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| 97 | !* 4.15 Constant shear stress until the top of the low level flow layer |
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| 98 | 415 CONTINUE |
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| 99 | ! 4.2 Wave displacement at next level. |
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| 100 | 420 CONTINUE |
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| 101 | |
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| 102 | DO ji=1,kgwd |
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| 103 | jl=kdx(ji) |
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| 104 | IF(JK.LT.IKNU2(JL)) THEN |
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| 105 | ZNORM(JL)=gkdrag*ZRHO(JL,JK)*SQRT(BV(JL,JK))*ZVPH(JL,JK)*zoro(jl) |
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| 106 | ZDZ2(JL,JK)=ZTAU(JL,JK+1)/max(ZNORM(JL),gssec) |
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| 107 | ENDIF |
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| 108 | ENDDO |
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| 109 | |
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| 110 | ! 4.3 Wave Richardson number, new wave displacement and stress: |
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| 111 | ! Breaking evaluation and critical level C |
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| 112 | DO ji=1,kgwd |
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| 113 | jl=kdx(ji) |
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| 114 | IF(JK.LT.IKNU2(JL)) THEN |
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| 115 | IF((ZTAU(JL,JK+1).LT.GTSEC).OR.(JK.LE.ICRIT(JL))) THEN |
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| 116 | ZTAU(JL,JK)=0.0 |
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| 117 | ELSE |
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| 118 | ZSQR=SQRT(PRI(JL,JK)) |
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| 119 | ZALFA=SQRT(BV(JL,JK)*ZDZ2(JL,JK))/ZVPH(JL,JK) |
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| 120 | ZRIW=PRI(JL,JK)*(1.-ZALFA)/(1+ZALFA*ZSQR)**2 |
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| 121 | IF(ZRIW.LT.GRCRIT) THEN |
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| 122 | ZDEL=4./ZSQR/GRCRIT+1./GRCRIT**2+4./GRCRIT |
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| 123 | ZB=1./GRCRIT+2./ZSQR |
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| 124 | ZALPHA=0.5*(-ZB+SQRT(ZDEL)) |
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| 125 | ZDZ2N=(ZVPH(JL,JK)*ZALPHA)**2/BV(JL,JK) |
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| 126 | ZTAU(JL,JK)=ZNORM(JL)*ZDZ2N |
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| 127 | ELSE |
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| 128 | ZTAU(JL,JK)=ZNORM(JL)*ZDZ2(JL,JK) |
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| 129 | ENDIF |
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| 130 | ZTAU(JL,JK)=MIN(ZTAU(JL,JK),ZTAU(JL,JK+1)) |
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| 131 | ENDIF |
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| 132 | ENDIF |
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| 133 | ENDDO |
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| 134 | end DO !JK=nlayer,2,-1 |
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| 135 | !------------------------------------------------------------------------------------------- |
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| 136 | |
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| 137 | 440 CONTINUE |
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| 138 | |
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| 139 | ! write(*,*) 'ZTAU' |
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| 140 | ! write(*,99) ((ji,ilevh,ZTAU(ji,ilevh),ji=1,ndomainsz ), |
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| 141 | ! . ilevh=1,nlayer+1) |
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| 142 | 99 FORMAT(i3,i3,f15.5) ! not used |
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| 143 | |
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| 144 | ! Proganisation of the stress profile if breaking occurs at low level |
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| 145 | DO ji=1,kgwd |
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| 146 | jl=kdx(ji) |
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| 147 | Z_TAU(JL,IKENVH(JL))=ZTAU(JL,IKENVH(JL)) |
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| 148 | Z_TAU(JL,IKCRITH(JL))=ZTAU(JL,IKCRITH(JL)) |
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| 149 | ENDDO |
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| 150 | |
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| 151 | DO JK=1,nlayer |
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| 152 | DO ji=1,kgwd |
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| 153 | jl=kdx(ji) |
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| 154 | IF(JK.GT.IKCRITH(JL).AND.JK.LT.IKENVH(JL))THEN |
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| 155 | ZDELP=pplev(JL,JK)-pplev(JL,IKENVH(JL)) |
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| 156 | ZDELPT=pplev(JL,IKCRITH(JL))-pplev(JL,IKENVH(JL)) |
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| 157 | ZTAU(JL,JK)=Z_TAU(JL,IKENVH(JL))+(Z_TAU(JL,IKCRITH(JL))-Z_TAU(JL,IKENVH(JL)))*ZDELP/ZDELPT |
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| 158 | ENDIF |
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| 159 | ENDDO |
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| 160 | end DO |
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| 161 | |
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| 162 | END SUBROUTINE GWPROFIL |
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| 163 | |
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| 164 | END MODULE gwprofil_mod |
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