| 1 | SUBROUTINE cosurf(ngrid,nlayer,nq,ptimestep, |
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| 2 | & tsurf,pplev,pdpsurf,pq,pdq,pqsurf,pdqsurf,pdqco,pdqsco) |
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| 3 | |
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| 4 | use callkeys_mod, only: dayfrac,no_n2frost |
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| 5 | use comcstfi_mod, only: g, r |
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| 6 | use comgeomfi_h |
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| 7 | use comsaison_h, only: fract |
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| 8 | use planete_mod, only: z0 |
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| 9 | use tracer_h, only: igcm_co_gas,igcm_co_ice,igcm_ch4_ice, |
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| 10 | & igcm_n2,mmol |
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| 11 | IMPLICIT NONE |
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| 12 | |
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| 13 | c---------------- |
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| 14 | c declarations: |
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| 15 | c ------------- |
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| 16 | |
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| 17 | #include "dimensions.h" |
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| 18 | |
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| 19 | ! Routine for nogcm : sublimation/condensation scheme at the surface |
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| 20 | ! Output : tendancy for methane mixing ratio and surface reservoir : |
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| 21 | ! pdqco, pdqs_co |
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| 22 | |
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| 23 | !----------------------------------------------------------------------- |
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| 24 | ! Arguments |
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| 25 | |
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| 26 | |
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| 27 | INTEGER ngrid,nlayer,nq |
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| 28 | REAL ptimestep |
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| 29 | INTEGER ig,iq |
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| 30 | |
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| 31 | ! input : |
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| 32 | REAL tsurf(ngrid) |
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| 33 | REAL pplev(ngrid,nlayer+1) |
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| 34 | REAL pdpsurf(ngrid) |
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| 35 | REAL pq(ngrid,nlayer,nq) |
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| 36 | REAL pdq(ngrid,nlayer,nq) |
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| 37 | REAL pqsurf(ngrid,nq) |
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| 38 | REAL pdqsurf(ngrid,nq) |
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| 39 | REAL qsurf_n2(ngrid) |
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| 40 | |
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| 41 | ! Output |
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| 42 | REAL pdqco(ngrid) |
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| 43 | REAL pdqsco(ngrid) |
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| 44 | |
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| 45 | ! local |
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| 46 | REAL qsat(ngrid) |
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| 47 | REAL zpsrf(ngrid) |
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| 48 | REAL zq_co(ngrid) |
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| 49 | REAL rho,u,v,uv,z00,cdrag,alt |
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| 50 | REAL vonk ! Von Karman Constant |
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| 51 | SAVE vonk |
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| 52 | DATA vonk/0.4/ |
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| 53 | |
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| 54 | LOGICAL firstcall |
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| 55 | SAVE firstcall |
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| 56 | real,dimension(:),save,allocatable :: qsat_co_factor ! factor to prevent co frost formation if no n2 frost |
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| 57 | !$OMP THREADPRIVATE(qsat_co_factor) |
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| 58 | |
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| 59 | IF (firstcall) THEN |
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| 60 | firstcall=.false. |
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| 61 | ! If fixed distribution of N2, then no CO frost either |
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| 62 | ALLOCATE(qsat_co_factor(ngrid)) |
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| 63 | qsat_co_factor(:)=1. |
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| 64 | IF (no_n2frost) then |
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| 65 | DO ig=1,ngrid |
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| 66 | if (pqsurf(ig,igcm_n2).eq.0.) then |
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| 67 | qsat_co_factor(ig) = 1.e6 |
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| 68 | endif |
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| 69 | ENDDO |
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| 70 | ENDIF |
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| 71 | ENDIF |
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| 72 | |
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| 73 | ! Calculation of turbulent flux : F=rho*cdrag*uv*(qsat-zq) |
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| 74 | |
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| 75 | ! Calcul de cdrag |
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| 76 | alt=5. ! m |
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| 77 | z00=z0 !1.e-2 ! rugosity |
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| 78 | cdrag=(vonk/log(alt/z00))**2 |
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| 79 | |
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| 80 | u=0.3 |
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| 81 | v=0.4 |
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| 82 | uv=sqrt(u**2+v**2) |
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| 83 | |
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| 84 | DO ig=1,ngrid |
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| 85 | pdqsco(ig)=0. |
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| 86 | pdqco(ig)=0. |
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| 87 | ENDDO |
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| 88 | |
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| 89 | DO ig=1,ngrid |
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| 90 | zpsrf(ig)=pplev(ig,1) |
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| 91 | zq_co(ig)=pq(ig,1,igcm_co_gas) |
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| 92 | ! & + pdq(ig,1,igcm_co_gas)*ptimestep ! pas utile si fast |
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| 93 | ENDDO |
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| 94 | |
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| 95 | call cosat(ngrid,tsurf,zpsrf,qsat,pqsurf(:,igcm_n2)) |
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| 96 | |
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| 97 | DO ig=1,ngrid |
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| 98 | rho = zpsrf(ig) / (r * tsurf(ig) ) |
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| 99 | |
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| 100 | pdqsco(ig)=(-rho*uv*cdrag*(qsat(ig)-zq_co(ig))) |
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| 101 | |
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| 102 | if ((-pdqsco(ig)*ptimestep).gt.(pqsurf(ig,igcm_co_ice))) then |
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| 103 | !write(*,*)'cosurf : on sublime plus que qsurf_co!' |
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| 104 | pdqsco(ig)=-pqsurf(ig,igcm_co_ice)/ptimestep |
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| 105 | endif |
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| 106 | pdqco(ig)=-pdqsco(ig)*g/zpsrf(ig) |
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| 107 | ENDDO |
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| 108 | RETURN |
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| 109 | END |
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