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module cv30_closure_m |
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implicit none |
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contains |
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SUBROUTINE cv30_closure(icb, inb, pbase, p, ph, tv, buoy, sig, w0, cape, m) |
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! CLOSURE |
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! Vectorization: S. Bony |
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use cv30_param_m, only: alpha, beta, dtcrit, minorig, nl |
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use cv_thermo_m, only: rrd |
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USE dimphy, ONLY: klev, klon |
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! input: |
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integer, intent(in):: icb(:), inb(:) ! (ncum) |
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real pbase(klon) |
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real p(:, :) ! (klon, klev) |
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real, intent(in):: ph(:, :) ! (ncum, klev + 1) |
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real tv(klon, klev), buoy(klon, klev) |
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! input/output: |
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real sig(klon, klev), w0(klon, klev) |
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! output: |
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real cape(klon) |
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real m(klon, klev) |
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! Local: |
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integer ncum |
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integer i, j, k, icbmax |
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real deltap, fac, w, amu |
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real dtmin(klon, klev), sigold(klon, klev) |
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!------------------------------------------------------- |
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ncum = size(icb) |
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! Initialization |
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do k=1, nl |
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do i=1, ncum |
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m(i, k)=0.0 |
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enddo |
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enddo |
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! Reset sig(i) and w0(i) for i>inb and i<icb |
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! update sig and w0 above LNB: |
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do k=1, nl-1 |
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do i=1, ncum |
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if ((inb(i) < (nl-1)).and.(k >= (inb(i) + 1)))then |
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sig(i, k)=beta*sig(i, k) & |
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+ 2.*alpha*buoy(i, inb(i))*ABS(buoy(i, inb(i))) |
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sig(i, k)=AMAX1(sig(i, k), 0.0) |
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w0(i, k)=beta*w0(i, k) |
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endif |
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end do |
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end do |
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! compute icbmax: |
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icbmax=2 |
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do i=1, ncum |
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icbmax=MAX(icbmax, icb(i)) |
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end do |
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! update sig and w0 below cloud base: |
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do k=1, icbmax |
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do i=1, ncum |
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if (k <= icb(i))then |
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sig(i, k)=beta*sig(i, k)-2.*alpha*buoy(i, icb(i))*buoy(i, icb(i)) |
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sig(i, k)=amax1(sig(i, k), 0.0) |
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w0(i, k)=beta*w0(i, k) |
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endif |
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end do |
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end do |
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! Reset fractional areas of updrafts and w0 at initial time |
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! and after 10 time steps of no convection |
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do k=1, nl-1 |
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do i=1, ncum |
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if (sig(i, klev) < 1.5.or.sig(i, klev) > 12.0)then |
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sig(i, k)=0.0 |
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w0(i, k)=0.0 |
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endif |
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end do |
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end do |
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! Calculate convective available potential energy (cape), |
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! vertical velocity (w), fractional area covered by |
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! undilute updraft (sig), and updraft mass flux (m) |
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do i=1, ncum |
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cape(i)=0.0 |
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end do |
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! compute dtmin (minimum buoyancy between ICB and given level k): |
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do i=1, ncum |
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do k=1, nl |
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dtmin(i, k)=100.0 |
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enddo |
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enddo |
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do i=1, ncum |
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do k=1, nl |
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do j=minorig, nl |
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if ((k >= (icb(i) + 1)).and.(k <= inb(i)).and. & |
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(j >= icb(i)).and.(j <= (k-1)))then |
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dtmin(i, k)=AMIN1(dtmin(i, k), buoy(i, j)) |
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endif |
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end do |
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end do |
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end do |
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! The interval on which cape is computed starts at pbase: |
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do k=1, nl |
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do i=1, ncum |
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if ((k >= (icb(i) + 1)).and.(k <= inb(i))) then |
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deltap = MIN(pbase(i), ph(i, k-1))-MIN(pbase(i), ph(i, k)) |
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cape(i)=cape(i) + rrd*buoy(i, k-1)*deltap/p(i, k-1) |
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cape(i)=AMAX1(0.0, cape(i)) |
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sigold(i, k)=sig(i, k) |
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sig(i, k)=beta*sig(i, k) + alpha*dtmin(i, k)*ABS(dtmin(i, k)) |
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sig(i, k)=amax1(sig(i, k), 0.0) |
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sig(i, k)=amin1(sig(i, k), 0.01) |
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fac=AMIN1(((dtcrit-dtmin(i, k))/dtcrit), 1.0) |
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w=(1.-beta)*fac*SQRT(cape(i)) + beta*w0(i, k) |
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amu=0.5*(sig(i, k) + sigold(i, k))*w |
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m(i, k)=amu*0.007*p(i, k)*(ph(i, k)-ph(i, k + 1))/tv(i, k) |
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w0(i, k)=w |
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endif |
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end do |
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end do |
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do i=1, ncum |
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w0(i, icb(i))=0.5*w0(i, icb(i) + 1) |
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m(i, icb(i))=0.5*m(i, icb(i) + 1) & |
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*(ph(i, icb(i))-ph(i, icb(i) + 1)) & |
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/(ph(i, icb(i) + 1)-ph(i, icb(i) + 2)) |
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sig(i, icb(i))=sig(i, icb(i) + 1) |
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sig(i, icb(i)-1)=sig(i, icb(i)) |
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end do |
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end SUBROUTINE cv30_closure |
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end module cv30_closure_m |