| 1 | MODULE drag_noro_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 drag_noro (ngrid,nlayer,ptimestep,pplay,pplev,pvar, psig, pgam, pthe, & |
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| 8 | kgwd,kgwdim,kdx,ktest,t, u, v, & |
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| 9 | ! output |
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| 10 | pulow, pvlow, pustr, pvstr, d_t, d_u, d_v) |
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| 11 | |
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| 12 | !-------------------------------------------------------------------------------- |
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| 13 | ! MODULE contains DRAG_NORO SUBROUNTINE for sub-grid scale orographic sheme. |
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| 14 | ! 1) Initialization the variables |
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| 15 | ! 2) Overturn the levels and computes geopotential height |
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| 16 | ! 3) Call the and ORODRAG subroutine to updates the tendencies |
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| 17 | ! 4) Overturn back to the normal level of the tendencies and transfer it into |
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| 18 | ! increments and sum the oro-gw stress. |
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| 19 | ! the scheme has been called. |
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| 20 | ! Z.X. Li + F.Lott (LMD/CNRS/ENS) 1995-02-01 |
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| 21 | ! |
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| 22 | ! UPDATE: J.Liu 03/03/2022 Translate the code into .F90. The name of the |
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| 23 | ! variables are uniformed. Comments are made. |
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| 24 | ! Unused variables are deleted. |
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| 25 | !------------------------------------------------------------------------------- |
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| 26 | |
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| 27 | use dimradmars_mod, only: ndomainsz |
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| 28 | USE orodrag_mod, ONLY: orodrag |
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| 29 | USE comcstfi_h, ONLY: g, r |
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| 30 | |
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| 31 | IMPLICIT none |
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| 32 | |
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| 33 | ! 0. DECLARATIONS: |
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| 34 | |
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| 35 | ! 0.1 Input: |
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| 36 | INTEGER, intent(in):: ngrid ! Number of atmospheric columns [only nd] |
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| 37 | INTEGER, intent(in):: nlayer ! Number of atmospheric layers |
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| 38 | REAL, intent(in):: ptimestep ! Time step of the Physics(s) |
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| 39 | real, intent(in):: pplay(ndomainsz,nlayer) ! Pressure at full levels(Pa) |
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| 40 | real, intent(in):: pplev(ndomainsz,nlayer+1) ! Pressure at 1/2 levels(Pa) |
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| 41 | REAL, intent(in):: pvar(ndomainsz) ! sub-grid scale standard deviation |
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| 42 | REAL, intent(in):: psig(ndomainsz) ! sub-grid scale standard slope |
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| 43 | REAL, intent(in):: pgam(ndomainsz) ! sub-grid scale standard anisotropy |
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| 44 | REAL, intent(in):: pthe(ndomainsz) ! sub-grid scale principal axes angle |
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| 45 | REAL, intent(in):: u(ndomainsz,nlayer) ! Zonal wind at full levels(m/s) |
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| 46 | REAL, intent(in):: v(ndomainsz,nlayer) ! Meridional wind at full levels(m/s) |
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| 47 | REAL, intent(in):: t(ndomainsz,nlayer) ! Temperature at full levels(m/s) |
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| 48 | INTEGER, intent(in):: kgwd ! Number of points at which the scheme is called |
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| 49 | INTEGER, intent(in):: kgwdim ! kgwdim=MAX(1,kgwd) |
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| 50 | INTEGER, intent(in):: kdx(ndomainsz) ! Points at which to call the scheme |
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| 51 | INTEGER, intent(in):: ktest(ndomainsz) ! Map of calling points |
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| 52 | |
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| 53 | ! 0.2 Output: |
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| 54 | REAL, intent(out):: pulow(ndomainsz) ! Low level zonal wind |
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| 55 | REAL, intent(out):: pvlow(ndomainsz) ! Low level meridional wind |
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| 56 | REAL, intent(out):: pustr(ndomainsz) ! Low level zonal stress |
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| 57 | REAL, intent(out):: pvstr(ndomainsz) ! Low level meridional stress |
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| 58 | REAL, intent(out):: d_t(ndomainsz,nlayer) ! Temperature increment(K) due to orographic gravity waves |
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| 59 | REAL, intent(out):: d_u(ndomainsz,nlayer) ! Zonal increment(m/s) due to orographic gravity waves |
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| 60 | REAL, intent(out):: d_v(ndomainsz,nlayer) ! Meridional increment(m/s) due to orographic gravity waves |
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| 61 | |
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| 62 | ! 0.3 Variables locales: |
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| 63 | INTEGER i, k |
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| 64 | REAL inv_pplev(ndomainsz,nlayer+1) ! Inversed (by inverse the pplev pressure) pressure at 1/2 levels |
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| 65 | REAL inv_pplay(ndomainsz,nlayer) ! Inversed (by inverse the pplay pressure) pressure at full levels |
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| 66 | REAL zgeom(ndomainsz,nlayer) ! Geopotetial height (Inversed ??) |
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| 67 | REAL inv_pt(ndomainsz,nlayer) ! Inversed (by inverse the t) temperature (K) at full levels |
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| 68 | REAL inv_pu(ndomainsz,nlayer) ! Inversed (by inverse the u) zonal wind (m/s) at full levels |
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| 69 | REAL inv_pv(ndomainsz,nlayer) ! Inversed (by inverse the v) meridional wind (m/s) at full levels |
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| 70 | REAL pdtdt(ndomainsz,nlayer) ! Temperature tendency outputs from main routine ORODRAG |
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| 71 | REAL pdudt(ndomainsz,nlayer) ! Zonal winds tendency outputs from main routine ORODRAG |
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| 72 | REAL pdvdt(ndomainsz,nlayer) ! Meridional winds tendency outputs from main routine ORODRAG |
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| 73 | |
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| 74 | !----------------------------------------------------------------------------------------------------------------------- |
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| 75 | ! 1. INITIALISATIONS |
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| 76 | !----------------------------------------------------------------------------------------------------------------------- |
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| 77 | ! 1.1 Initialize the input/output variables (for security purpose) |
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| 78 | DO i = 1,ngrid |
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| 79 | pulow(i) = 0.0 |
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| 80 | pvlow(i) = 0.0 |
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| 81 | pustr(i) = 0.0 |
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| 82 | pvstr(i) = 0.0 |
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| 83 | ENDDO |
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| 84 | |
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| 85 | DO k = 1, nlayer |
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| 86 | DO i = 1, ngrid |
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| 87 | d_t(i,k) = 0.0 |
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| 88 | d_u(i,k) = 0.0 |
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| 89 | d_v(i,k) = 0.0 |
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| 90 | pdudt(i,k)=0.0 |
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| 91 | pdvdt(i,k)=0.0 |
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| 92 | pdtdt(i,k)=0.0 |
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| 93 | ENDDO |
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| 94 | ENDDO |
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| 95 | |
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| 96 | ! 1.2 Prepare the ininv_put varibales (Attention: The order of vertical levels increases from top to bottom ) |
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| 97 | ! Here the levels are overturned, that is, the surface becomes to the top and the top becomes to the surface |
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| 98 | ! and so forth |
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| 99 | DO k = 1, nlayer |
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| 100 | DO i = 1, ngrid |
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| 101 | inv_pt(i,k) = t(i,nlayer-k+1) |
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| 102 | inv_pu(i,k) = u(i,nlayer-k+1) |
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| 103 | inv_pv(i,k) = v(i,nlayer-k+1) |
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| 104 | inv_pplay(i,k) = pplay(i,nlayer-k+1) |
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| 105 | inv_pplev(i,k) = pplev(i,nlayer+1-k+1) |
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| 106 | ENDDO |
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| 107 | endDO |
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| 108 | |
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| 109 | DO i = 1, ngrid |
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| 110 | inv_pplev(i,nlayer+1) = pplev(i,1) |
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| 111 | ENDDO |
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| 112 | |
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| 113 | !calculate g*dz by R*T*[LN(P(z)/P(z+dz))] |
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| 114 | DO i = 1, ngrid |
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| 115 | zgeom(i,nlayer) = r * inv_pt(i,nlayer)* LOG(inv_pplev(i,nlayer+1)/inv_pplay(i,nlayer)) |
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| 116 | ENDDO |
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| 117 | |
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| 118 | ! sum g*dz from surface to top to get geopotential height |
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| 119 | DO k = nlayer-1, 1, -1 |
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| 120 | DO i = 1, ngrid |
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| 121 | zgeom(i,k) = zgeom(i,k+1) + r * (inv_pt(i,k)+inv_pt(i,k+1))/2.0 * LOG(inv_pplay(i,k+1)/inv_pplay(i,k)) |
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| 122 | ENDDO |
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| 123 | endDO |
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| 124 | |
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| 125 | !----------------------------------------------------------------------------------------------------------------------- |
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| 126 | ! 2. CALL the Main Rountine OORDRAG |
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| 127 | !----------------------------------------------------------------------------------------------------------------------- |
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| 128 | ! 2.1 call the main rountine to get the tendencies |
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| 129 | CALL ORODRAG(ngrid,nlayer,kgwd,kgwdim,kdx,ktest,ptimestep,inv_pplev,inv_pplay,zgeom,& |
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| 130 | inv_pt, inv_pu, inv_pv, pvar, psig, pgam, pthe, & |
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| 131 | ! output: |
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| 132 | pulow,pvlow,pdudt,pdvdt,pdtdt) |
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| 133 | |
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| 134 | ! 2.2 Transfer tendency into increment by multiply the physical time steps |
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| 135 | ! maybe in the future here cancel multiply the ptimestep thus it will not divide ptimestep again in the main rountine |
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| 136 | ! calldrag_noro_mod.F90 |
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| 137 | DO k = 1, nlayer |
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| 138 | DO i = 1, ngrid |
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| 139 | d_u(i,nlayer+1-k) = ptimestep*pdudt(i,k) |
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| 140 | d_v(i,nlayer+1-k) = ptimestep*pdvdt(i,k) |
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| 141 | d_t(i,nlayer+1-k) = ptimestep*pdtdt(i,k) |
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| 142 | pustr(i) = pustr(i)+g*pdudt(i,k)*(inv_pplev(i,k+1)-inv_pplev(i,k)) |
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| 143 | pvstr(i) = pvstr(i)+g*pdvdt(i,k)*(inv_pplev(i,k+1)-inv_pplev(i,k)) |
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| 144 | ENDDO |
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| 145 | ENDDO |
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| 146 | |
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| 147 | END SUBROUTINE drag_noro |
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| 148 | |
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| 149 | END MODULE drag_noro_mod |
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