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guez |
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module climb_hq_down_m |
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implicit none |
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contains |
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subroutine climb_hq_down(pkf, cq, dq, ch, dh, paprs, pplay, t, coef, dtime, & |
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delp, q) |
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USE conf_phys_m, ONLY: iflag_pbl |
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USE dimphy, ONLY: klev |
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USE suphec_m, ONLY: rcpd, rd, rg, rkappa |
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REAL, intent(out), dimension(:, :):: pkf, cq, dq, ch, dh ! (knon, klev) |
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REAL, intent(in):: paprs(:, :) ! (knon, klev + 1) |
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! pression a inter-couche (Pa) |
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REAL, intent(in):: pplay(:, :) ! (knon, klev) |
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! pression au milieu de couche (Pa) |
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REAL, intent(in):: t(:, :) ! (knon, klev) temperature (K) |
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REAL, intent(in):: coef(:, 2:) ! (knon, 2:klev) |
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! Le coefficient d'echange (m**2 / s) multiplie par le cisaillement |
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! du vent (dV / dz) |
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REAL, intent(in):: dtime ! intervalle du temps (s) |
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REAL, intent(in):: delp(:, :) ! (knon, klev) |
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! epaisseur de couche en pression (Pa) |
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REAL, intent(in):: q(:, :) ! (knon, klev) humidite specifique (kg / kg) |
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! Local: |
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INTEGER k |
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REAL h(size(paprs, 1), klev) ! (knon, klev) enthalpie potentielle |
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REAL zx_coef(size(paprs, 1), 2:klev) ! (knon, 2:klev) |
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REAL gamt(size(paprs, 1), 2:klev) ! (knon, 2:klev) |
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! contre-gradient pour la chaleur sensible, en K m-1 |
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REAL gamah(size(paprs, 1), 2:klev) ! (knon, 2:klev) |
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REAL buf1(size(paprs, 1)), buf2(size(paprs, 1)) |
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!---------------------------------------------------------------- |
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forall (k = 1:klev) pkf(:, k) = (paprs(:, 1) / pplay(:, k))**RKAPPA |
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! (La pression de r\'ef\'erence est celle au sol.) |
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h = RCPD * t * pkf |
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! Convertir les coefficients en variables convenables au calcul: |
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forall (k = 2:klev) zx_coef(:, k) = coef(:, k) & |
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/ (pplay(:, k - 1) - pplay(:, k)) & |
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* (paprs(:, k) * 2 / (t(:, k) + t(:, k - 1)) / RD)**2 * dtime * RG**2 |
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! Preparer les flux lies aux contre-gardients |
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if (iflag_pbl == 1) then |
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gamt(:, 2) = - 2.5e-3 |
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gamt(:, 3:)= - 1e-3 |
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forall (k = 2:klev) gamah(:, k) = gamt(:, k) * (RD * (t(:, k - 1) & |
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+ t(:, k)) / 2. / RG / paprs(:, k) * (pplay(:, k - 1) & |
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- pplay(:, k))) * RCPD * (paprs(:, 1) / paprs(:, k))**RKAPPA |
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else |
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gamah = 0. |
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endif |
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buf1 = zx_coef(:, klev) + delp(:, klev) |
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cq(:, klev) = q(:, klev) * delp(:, klev) / buf1 |
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dq(:, klev) = zx_coef(:, klev) / buf1 |
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buf2 = delp(:, klev) / pkf(:, klev) + zx_coef(:, klev) |
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ch(:, klev) = (h(:, klev) / pkf(:, klev) * delp(:, klev) & |
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- zx_coef(:, klev) * gamah(:, klev)) / buf2 |
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dh(:, klev) = zx_coef(:, klev) / buf2 |
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DO k = klev - 1, 2, - 1 |
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buf1 = delp(:, k) + zx_coef(:, k) & |
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+ zx_coef(:, k + 1) * (1. - dq(:, k + 1)) |
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cq(:, k) = (q(:, k) * delp(:, k) & |
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+ zx_coef(:, k + 1) * cq(:, k + 1)) / buf1 |
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dq(:, k) = zx_coef(:, k) / buf1 |
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buf2 = delp(:, k) / pkf(:, k) + zx_coef(:, k) & |
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+ zx_coef(:, k + 1) * (1. - dh(:, k + 1)) |
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ch(:, k) = (h(:, k) / pkf(:, k) * delp(:, k) & |
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+ zx_coef(:, k + 1) * ch(:, k + 1) & |
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+ zx_coef(:, k + 1) * gamah(:, k + 1) & |
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- zx_coef(:, k) * gamah(:, k)) / buf2 |
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dh(:, k) = zx_coef(:, k) / buf2 |
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ENDDO |
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buf1 = delp(:, 1) + zx_coef(:, 2) * (1. - dq(:, 2)) |
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cq(:, 1) = (q(:, 1) * delp(:, 1) + zx_coef(:, 2) * cq(:, 2)) / buf1 |
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dq(:, 1) = - 1. * RG / buf1 |
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buf2 = delp(:, 1) / pkf(:, 1) + zx_coef(:, 2) * (1. - dh(:, 2)) |
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ch(:, 1) = (h(:, 1) / pkf(:, 1) * delp(:, 1) & |
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+ zx_coef(:, 2) * (gamah(:, 2) + ch(:, 2))) / buf2 |
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dh(:, 1) = - 1. * RG / buf2 |
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end subroutine climb_hq_down |
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end module climb_hq_down_m |
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