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module cv_feed_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 cv_feed(len, nd, t, q, qs, p, hm, gz, nk, icb, icbmax, iflag, & |
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tnk, qnk, gznk, plcl) |
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|
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use cv_param |
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|
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! Purpose: CONVECTIVE FEED |
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|
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! inputs: |
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integer, intent(in):: len, nd |
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real, intent(in):: t(len, nd) |
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real, intent(in):: q(len, nd), qs(len, nd), p(len, nd) |
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real hm(len, nd), gz(len, nd) |
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|
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! outputs: |
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integer iflag(len) |
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integer, intent(out):: nk(len), icb(len), icbmax |
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real tnk(len), qnk(len), gznk(len), plcl(len) |
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|
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! local variables: |
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integer i, k |
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integer ihmin(len) |
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real work(len) |
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real pnk(len), qsnk(len), rh(len), chi(len) |
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|
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!------------------------------------------------------------------- |
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! --- Find level of minimum moist static energy |
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! --- If level of minimum moist static energy coincides with |
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! --- or is lower than minimum allowable parcel origin level, |
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! --- set iflag to 6. |
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!------------------------------------------------------------------- |
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|
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do i=1, len |
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work(i)=1.0e12 |
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ihmin(i)=nl |
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end do |
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do k=2, nlp |
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do i=1, len |
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if ((hm(i, k) < work(i)).and. & |
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(hm(i, k) < hm(i, k-1)))then |
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work(i)=hm(i, k) |
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ihmin(i)=k |
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endif |
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end do |
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end do |
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do i=1, len |
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ihmin(i) = min(ihmin(i), nlm) |
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if (ihmin(i) <= minorig) iflag(i)=6 |
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end do |
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|
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!------------------------------------------------------------------- |
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! --- Find that model level below the level of minimum moist static |
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! --- energy that has the maximum value of moist static energy |
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!------------------------------------------------------------------- |
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|
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do i=1, len |
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work(i)=hm(i, minorig) |
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nk(i)=minorig |
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end do |
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do k=minorig+1, nl |
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do i=1, len |
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if ((hm(i, k) > work(i)).and.(k <= ihmin(i)))then |
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work(i)=hm(i, k) |
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nk(i)=k |
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endif |
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end do |
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end do |
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!------------------------------------------------------------------- |
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! --- Check whether parcel level temperature and specific humidity |
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! --- are reasonable |
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!------------------------------------------------------------------- |
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do i=1, len |
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if (((t(i, nk(i)) < 250.0).or. & |
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(q(i, nk(i)) <= 0.0).or. & |
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(p(i, ihmin(i)) < 400.0)).and. & |
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(iflag(i) == 0))iflag(i)=7 |
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end do |
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!------------------------------------------------------------------- |
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! --- Calculate lifted condensation level of air at parcel origin level |
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! --- (Within 0.2% of formula of Bolton, MON. WEA. REV., 1980) |
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!------------------------------------------------------------------- |
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do i=1, len |
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tnk(i)=t(i, nk(i)) |
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qnk(i)=q(i, nk(i)) |
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gznk(i)=gz(i, nk(i)) |
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pnk(i)=p(i, nk(i)) |
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qsnk(i)=qs(i, nk(i)) |
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|
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rh(i)=qnk(i)/qsnk(i) |
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rh(i)=min(1.0, rh(i)) |
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chi(i)=tnk(i)/(1669.0-122.0*rh(i)-tnk(i)) |
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plcl(i)=pnk(i)*(rh(i)**chi(i)) |
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if (((plcl(i) < 200.0).or.(plcl(i) >= 2000.0)) & |
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.and.(iflag(i) == 0))iflag(i)=8 |
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end do |
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!------------------------------------------------------------------- |
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! --- Calculate first level above lcl (=icb) |
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!------------------------------------------------------------------- |
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do i=1, len |
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icb(i)=nlm |
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end do |
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|
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do k=minorig, nl |
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do i=1, len |
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if ((k >= (nk(i)+1)).and.(p(i, k) < plcl(i))) & |
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icb(i)=min(icb(i), k) |
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end do |
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end do |
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|
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do i=1, len |
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if ((icb(i) >= nlm).and.(iflag(i) == 0))iflag(i)=9 |
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end do |
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|
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! Compute icbmax. |
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|
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icbmax=2 |
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do i=1, len |
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icbmax=max(icbmax, icb(i)) |
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end do |
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|
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end SUBROUTINE cv_feed |
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|
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end module cv_feed_m |
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