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module cv30_undilute1_m |
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|
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implicit none |
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|
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contains |
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|
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SUBROUTINE cv30_undilute1(t1, q1, qs1, gz1, plcl1, p1, nk1, icb1, tp1, & |
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tvp1, clw1, icbs1) |
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|
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! UNDILUTE (ADIABATIC) UPDRAFT / 1st part |
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! (up through ICB1 + 1) |
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! Calculates the lifted parcel virtual temperature at nk1, the |
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! actual temperature, and the adiabatic liquid water content. |
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|
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! Equivalent de TLIFT entre NK1 et ICB1+1 inclus |
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|
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! Differences with convect4: |
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! - icbs1 is the first level above LCL (may differ from icb1) |
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! - in the iterations, used x(icbs1) instead x(icb1) |
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! - tvp1 is computed in only one time |
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! - icbs1: first level above Plcl1 (IMIN de TLIFT) in output |
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! - if icbs1=icb1, compute also tp1(icb1+1), tvp1(icb1+1) & clw1(icb1+1) |
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|
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use cv30_param_m, only: minorig, nl |
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use cv_thermo_m, only: cl, clmcpv, cpd, cpv, eps, lv0, rrv |
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USE dimphy, ONLY: klev, klon |
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|
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! inputs: |
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integer, intent(in):: nk1(klon), icb1(klon) |
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real, intent(in):: t1(klon, klev) |
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real, intent(in):: q1(klon, klev), qs1(klon, klev), gz1(klon, klev) |
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real, intent(in):: p1(klon, klev) |
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real, intent(in):: plcl1(klon) |
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|
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! outputs: |
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real tp1(klon, klev), tvp1(klon, klev), clw1(klon, klev) |
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|
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! local variables: |
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integer i, k |
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integer icbs1(klon), icbsmax2 |
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real tg, qg, alv, s, ahg, tc, denom, es |
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real ah0(klon), cpp(klon) |
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real tnk(klon), qnk(klon), gznk(klon), ticb(klon), gzicb(klon) |
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real qsicb(klon) |
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real cpinv(klon) |
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|
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!------------------------------------------------------------------- |
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|
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! Calculates the lifted parcel virtual temperature at nk1, |
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! the actual temperature, and the adiabatic |
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! liquid water content. The procedure is to solve the equation. |
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! cp*tp1+L*qp+phi=cp*tnk+L*qnk+gznk. |
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|
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do i=1, klon |
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tnk(i)=t1(i, nk1(i)) |
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qnk(i)=q1(i, nk1(i)) |
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gznk(i)=gz1(i, nk1(i)) |
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end do |
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|
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! *** Calculate certain parcel quantities, including static energy *** |
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|
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do i=1, klon |
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ah0(i)=(cpd*(1.-qnk(i))+cl*qnk(i))*tnk(i) & |
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+qnk(i)*(lv0-clmcpv*(tnk(i)-273.15))+gznk(i) |
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cpp(i)=cpd*(1.-qnk(i))+qnk(i)*cpv |
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cpinv(i)=1./cpp(i) |
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end do |
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|
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! *** Calculate lifted parcel quantities below cloud base *** |
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|
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do i=1, klon |
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! if icb1 is below LCL, start loop at ICB1+1: |
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! (icbs1 est le premier niveau au-dessus du LCL) |
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icbs1(i)=MIN(max(icb1(i), 2), nl) |
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if (plcl1(i) < p1(i, icbs1(i))) then |
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icbs1(i)=MIN(icbs1(i)+1, nl) |
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endif |
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enddo |
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|
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do i=1, klon |
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ticb(i)=t1(i, icbs1(i)) |
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gzicb(i)=gz1(i, icbs1(i)) |
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qsicb(i)=qs1(i, icbs1(i)) |
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enddo |
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|
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! Re-compute icbsmax (icbsmax2): |
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icbsmax2=2 |
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do i=1, klon |
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icbsmax2=max(icbsmax2, icbs1(i)) |
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end do |
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|
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! initialization outputs: |
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|
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do k=1, icbsmax2 |
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do i=1, klon |
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tp1(i, k) = 0.0 |
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tvp1(i, k) = 0.0 |
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clw1(i, k) = 0.0 |
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enddo |
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enddo |
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|
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! tp1 and tvp1 below cloud base: |
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|
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do k=minorig, icbsmax2-1 |
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do i=1, klon |
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tp1(i, k)=tnk(i)-(gz1(i, k)-gznk(i))*cpinv(i) |
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tvp1(i, k)=tp1(i, k)*(1.+qnk(i)/eps-qnk(i)) |
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end do |
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end do |
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|
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! *** Find lifted parcel quantities above cloud base *** |
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|
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do i=1, klon |
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tg=ticb(i) |
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qg=qsicb(i) |
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!debug alv=lv0-clmcpv*(ticb(i)-t0) |
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alv=lv0-clmcpv*(ticb(i)-273.15) |
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|
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! First iteration. |
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|
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s=cpd*(1.-qnk(i))+cl*qnk(i) & |
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+alv*alv*qg/(rrv*ticb(i)*ticb(i)) |
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s=1./s |
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|
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ahg=cpd*tg+(cl-cpd)*qnk(i)*tg+alv*qg+gzicb(i) |
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tg=tg+s*(ah0(i)-ahg) |
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|
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!debug tc=tg-t0 |
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tc=tg-273.15 |
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denom=243.5+tc |
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denom=MAX(denom, 1.0) |
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|
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es=6.112*exp(17.67*tc/denom) |
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qg=eps*es/(p1(i, icbs1(i))-es*(1.-eps)) |
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|
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! Second iteration. |
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|
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ahg=cpd*tg+(cl-cpd)*qnk(i)*tg+alv*qg+gzicb(i) |
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tg=tg+s*(ah0(i)-ahg) |
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|
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!debug tc=tg-t0 |
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tc=tg-273.15 |
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denom=243.5+tc |
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denom=MAX(denom, 1.0) |
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|
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es=6.112*exp(17.67*tc/denom) |
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|
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qg=eps*es/(p1(i, icbs1(i))-es*(1.-eps)) |
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|
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alv=lv0-clmcpv*(ticb(i)-273.15) |
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|
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! no approximation: |
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tp1(i, icbs1(i))=(ah0(i)-gz1(i, icbs1(i))-alv*qg) & |
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/(cpd+(cl-cpd)*qnk(i)) |
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|
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clw1(i, icbs1(i))=qnk(i)-qg |
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clw1(i, icbs1(i))=max(0.0, clw1(i, icbs1(i))) |
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|
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! (qg utilise au lieu du vrai mixing ratio rg) |
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tvp1(i, icbs1(i))=tp1(i, icbs1(i))*(1.+qg/eps-qnk(i)) |
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|
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end do |
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|
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! * icbs1 is the first level above the LCL: |
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! if plcl1<p1(icb1), then icbs1=icb1+1 |
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! if plcl1>p1(icb1), then icbs1=icb1 |
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|
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! * the routine above computes tvp1 from minorig to icbs1 (included). |
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|
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! * to compute buoybase (in cv30_trigger.F), both tvp1(icb1) and |
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! tvp1(icb1+1) must be known. This is the case if icbs1=icb1+1, |
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! but not if icbs1=icb1. |
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|
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! * therefore, in the case icbs1=icb1, we compute tvp1 at level icb1+1 |
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! (tvp1 at other levels will be computed in cv30_undilute2.F) |
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|
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do i=1, klon |
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ticb(i)=t1(i, icb1(i)+1) |
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gzicb(i)=gz1(i, icb1(i)+1) |
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qsicb(i)=qs1(i, icb1(i)+1) |
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enddo |
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|
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do i=1, klon |
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tg=ticb(i) |
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qg=qsicb(i) |
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!debug alv=lv0-clmcpv*(ticb(i)-t0) |
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alv=lv0-clmcpv*(ticb(i)-273.15) |
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|
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! First iteration. |
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|
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s=cpd*(1.-qnk(i))+cl*qnk(i) & |
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+alv*alv*qg/(rrv*ticb(i)*ticb(i)) |
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s=1./s |
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|
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ahg=cpd*tg+(cl-cpd)*qnk(i)*tg+alv*qg+gzicb(i) |
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tg=tg+s*(ah0(i)-ahg) |
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|
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!debug tc=tg-t0 |
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tc=tg-273.15 |
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denom=243.5+tc |
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denom=MAX(denom, 1.0) |
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|
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es=6.112*exp(17.67*tc/denom) |
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|
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qg=eps*es/(p1(i, icb1(i)+1)-es*(1.-eps)) |
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|
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! Second iteration. |
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|
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ahg=cpd*tg+(cl-cpd)*qnk(i)*tg+alv*qg+gzicb(i) |
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tg=tg+s*(ah0(i)-ahg) |
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|
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!debug tc=tg-t0 |
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tc=tg-273.15 |
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denom=243.5+tc |
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denom=MAX(denom, 1.0) |
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|
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es=6.112*exp(17.67*tc/denom) |
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|
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qg=eps*es/(p1(i, icb1(i)+1)-es*(1.-eps)) |
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|
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alv=lv0-clmcpv*(ticb(i)-273.15) |
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|
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! no approximation: |
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tp1(i, icb1(i)+1)=(ah0(i)-gz1(i, icb1(i)+1)-alv*qg) & |
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/(cpd+(cl-cpd)*qnk(i)) |
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|
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clw1(i, icb1(i)+1)=qnk(i)-qg |
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clw1(i, icb1(i)+1)=max(0.0, clw1(i, icb1(i)+1)) |
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|
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! (qg utilise au lieu du vrai mixing ratio rg) |
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tvp1(i, icb1(i)+1)=tp1(i, icb1(i)+1)*(1.+qg/eps-qnk(i)) !whole thing |
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end do |
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|
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end SUBROUTINE cv30_undilute1 |
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|
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end module cv30_undilute1_m |
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