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guez |
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subroutine dqthermcell2(ngrid,nlay,ptimestep,fm,entr,masse,frac & |
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,q,dq,qa) |
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use dimens_m |
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use dimphy |
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implicit none |
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!======================================================================= |
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! |
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! Calcul du transport verticale dans la couche limite en presence |
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! de "thermiques" explicitement representes |
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! calcul du dq/dt une fois qu'on connait les ascendances |
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! |
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!======================================================================= |
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integer ngrid,nlay |
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real ptimestep |
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real masse(ngrid,nlay),fm(ngrid,nlay+1) |
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real entr(ngrid,nlay),frac(ngrid,nlay) |
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real q(ngrid,nlay) |
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real dq(ngrid,nlay) |
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real qa(klon,klev),detr(klon,klev),wqd(klon,klev+1) |
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real qe(klon,klev),zf,zf2 |
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integer ig,k |
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! calcul du detrainement |
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do k=1,nlay |
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do ig=1,ngrid |
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detr(ig,k)=fm(ig,k)-fm(ig,k+1)+entr(ig,k) |
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enddo |
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enddo |
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! calcul de la valeur dans les ascendances |
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do ig=1,ngrid |
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qa(ig,1)=q(ig,1) |
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qe(ig,1)=q(ig,1) |
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enddo |
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do k=2,nlay |
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do ig=1,ngrid |
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if ((fm(ig,k+1)+detr(ig,k))*ptimestep.gt. & |
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1.e-5*masse(ig,k)) then |
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zf=0.5*(frac(ig,k)+frac(ig,k+1)) |
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zf2=1./(1.-zf) |
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qa(ig,k)=(fm(ig,k)*qa(ig,k-1)+zf2*entr(ig,k)*q(ig,k)) & |
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/(fm(ig,k+1)+detr(ig,k)+entr(ig,k)*zf*zf2) |
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qe(ig,k)=(q(ig,k)-zf*qa(ig,k))*zf2 |
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else |
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qa(ig,k)=q(ig,k) |
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qe(ig,k)=q(ig,k) |
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endif |
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enddo |
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enddo |
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do k=2,nlay |
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do ig=1,ngrid |
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! wqd(ig,k)=fm(ig,k)*0.5*(q(ig,k-1)+q(ig,k)) |
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wqd(ig,k)=fm(ig,k)*qe(ig,k) |
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enddo |
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enddo |
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do ig=1,ngrid |
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wqd(ig,1)=0. |
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wqd(ig,nlay+1)=0. |
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enddo |
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do k=1,nlay |
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do ig=1,ngrid |
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dq(ig,k)=(detr(ig,k)*qa(ig,k)-entr(ig,k)*qe(ig,k) & |
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-wqd(ig,k)+wqd(ig,k+1)) & |
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/masse(ig,k) |
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enddo |
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enddo |
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return |
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end |
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