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module cv3_prelim_m |
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implicit none |
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contains |
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SUBROUTINE cv3_prelim(len, nd, ndp1, t, q, p, ph, lv, cpn, tv, gz, h, hm, th) |
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USE cv3_param_m, ONLY: nl |
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USE cvthermo, ONLY: cl, clmcpv, cpd, cpv, eps, lv0, rrd, rrv |
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! Calculate arrays of geopotential, heat capacity and static energy |
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integer, intent(in):: len, nd, ndp1 |
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real, intent(in):: t(len, nd) |
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real, intent(in):: q(len, nd) |
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real, intent(in):: p(len, nd), ph(len, ndp1) |
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! outputs: |
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real lv(len, nd), cpn(len, nd), tv(len, nd) |
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real gz(len, nd), h(len, nd), hm(len, nd) |
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real th(len, nd) |
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! Local: |
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integer k, i |
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real rdcp |
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real tvx, tvy |
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real cpx(len, nd) |
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!-------------------------------------------------------------- |
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do k=1, nl |
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do i=1, len |
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lv(i, k)= lv0-clmcpv*(t(i, k)-273.15) |
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cpn(i, k)=cpd*(1.0-q(i, k)) + cpv*q(i, k) |
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cpx(i, k)=cpd*(1.0-q(i, k)) + cl*q(i, k) |
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tv(i, k)=t(i, k)*(1.0 + q(i, k)/eps-q(i, k)) |
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rdcp=(rrd*(1.-q(i, k)) + q(i, k)*rrv)/cpn(i, k) |
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th(i, k)=t(i, k)*(1000.0/p(i, k))**rdcp |
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end do |
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end do |
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! gz = phi at the full levels (same as p). |
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do i=1, len |
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gz(i, 1)=0.0 |
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end do |
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do k=2, nl |
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do i=1, len |
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tvx=t(i, k)*(1. + q(i, k)/eps-q(i, k)) |
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tvy=t(i, k-1)*(1. + q(i, k-1)/eps-q(i, k-1)) |
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gz(i, k)=gz(i, k-1) + 0.5*rrd*(tvx + tvy) & |
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*(p(i, k-1)-p(i, k))/ph(i, k) |
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end do |
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end do |
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! h = phi + cpT (dry static energy). |
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! hm = phi + cp(T-Tbase) + Lq |
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do k=1, nl |
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do i=1, len |
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h(i, k)=gz(i, k) + cpn(i, k)*t(i, k) |
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hm(i, k)=gz(i, k) + cpx(i, k)*(t(i, k)-t(i, 1)) + lv(i, k)*q(i, k) |
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end do |
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end do |
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end SUBROUTINE cv3_prelim |
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end module cv3_prelim_m |
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