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contains |
contains |
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SUBROUTINE newmicro (paprs, play, t, qlwp, clc, cltau, clemi, cldh, & |
SUBROUTINE newmicro (paprs, play, t, qlwp, clc, cltau, clemi, cldh, cldl, & |
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cldl, cldm, cldt, ctlwp, flwp, fiwp, flwc, fiwc, ok_aie, sulfate, & |
cldm, cldt, ctlwp, flwp, fiwp, flwc, fiwc) |
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sulfate_pi, bl95_b0, bl95_b1, cldtaupi, re, fl) |
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! From LMDZ4/libf/phylmd/newmicro.F, version 1.2 2004/06/03 09:22:43 |
! From LMDZ4/libf/phylmd/newmicro.F, version 1.2 2004/06/03 09:22:43 |
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USE conf_phys_m, ONLY: rad_chau1, rad_chau2 |
USE conf_phys_m, ONLY: rad_chau1, rad_chau2 |
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USE dimphy, ONLY: klev, klon |
USE dimphy, ONLY: klev, klon |
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USE suphec_m, ONLY: rd, rg |
USE histwrite_phy_m, ONLY: histwrite_phy |
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use nr_util, only: pi |
USE suphec_m, ONLY: rg |
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REAL, intent(in):: paprs(:, :) ! (klon, klev+1) |
REAL, intent(in):: paprs(:, :) ! (klon, klev+1) |
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real, intent(in):: play(:, :) ! (klon, klev) |
real, intent(in):: play(:, :) ! (klon, klev) |
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REAL, intent(out):: ctlwp(:) ! (klon) |
REAL, intent(out):: ctlwp(:) ! (klon) |
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REAL, intent(out):: flwp(:), fiwp(:) ! (klon) |
REAL, intent(out):: flwp(:), fiwp(:) ! (klon) |
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REAL, intent(out):: flwc(:, :), fiwc(:, :) ! (klon, klev) |
REAL, intent(out):: flwc(:, :), fiwc(:, :) ! (klon, klev) |
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LOGICAL, intent(in):: ok_aie ! apply aerosol indirect effect |
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REAL, intent(in):: sulfate(:, :) ! (klon, klev) |
! Local: |
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! sulfate aerosol mass concentration (micro g m-3) |
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REAL, intent(in):: sulfate_pi(:, :) ! (klon, klev) |
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! sulfate aerosol mass concentration (micro g m-3), pre-industrial value |
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REAL, intent(in):: bl95_b0, bl95_b1 |
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! Parameters in equation (D) of Boucher and Lohmann (1995, Tellus |
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! B). They link cloud droplet number concentration to aerosol mass |
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! concentration. |
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REAL, intent(out):: cldtaupi(:, :) ! (klon, klev) |
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! pre-industrial value of cloud optical thickness, needed for the |
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! diagnosis of the aerosol indirect radiative forcing (see |
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! radlwsw) |
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REAL, intent(out):: re(:, :) ! (klon, klev) |
REAL re(klon, klev) |
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! cloud droplet effective radius multiplied by fl (micro m) |
! cloud droplet effective radius multiplied by fl (micro m) |
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REAL, intent(out):: fl(:, :) ! (klon, klev) |
REAL fl(klon, klev) |
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! Denominator to re, introduced to avoid problems in the averaging |
! Denominator to re, introduced to avoid problems in the averaging |
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! of the output. fl is the fraction of liquid water clouds within |
! of the output. fl is the fraction of liquid water clouds within |
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! a grid cell. |
! a grid cell. |
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! Local: |
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REAL, PARAMETER:: cetahb = 0.45, cetamb = 0.8 |
REAL, PARAMETER:: cetahb = 0.45, cetamb = 0.8 |
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INTEGER i, k |
INTEGER i, k |
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REAL zflwp(klon), fice |
REAL zflwp(klon), fice |
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REAL radius, rad_chaud |
REAL rad_chaud |
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REAL, PARAMETER:: coef_chau = 0.13 |
REAL, PARAMETER:: coef_chau = 0.13 |
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REAL, PARAMETER:: seuil_neb = 0.001, t_glace = 273. - 15. |
REAL, PARAMETER:: seuil_neb = 0.001, t_glace = 273. - 15. |
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real rel, tc, rei, zfiwp(klon) |
real rel, tc, rei, zfiwp(klon) |
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real k_ice |
real k_ice |
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real, parameter:: k_ice0 = 0.005 ! units=m2/g |
real, parameter:: k_ice0 = 0.005 ! units=m2/g |
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real, parameter:: DF = 1.66 ! diffusivity factor |
real, parameter:: DF = 1.66 ! diffusivity factor |
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REAL cdnc(klon, klev) ! cloud droplet number concentration (m-3) |
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REAL cdnc_pi(klon, klev) |
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! cloud droplet number concentration, pre-industrial value (m-3) |
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!----------------------------------------------------------------- |
!----------------------------------------------------------------- |
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flwp(i) = 0. |
flwp(i) = 0. |
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fiwp(i) = 0. |
fiwp(i) = 0. |
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DO k = 1, klev |
loop_vertical: DO k = 1, klev |
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clc(i, k) = MAX(clc(i, k), seuil_neb) |
clc(i, k) = MAX(clc(i, k), seuil_neb) |
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! liquid/ice cloud water paths: |
! liquid/ice cloud water paths: |
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! effective cloud droplet radius (microns): |
! effective cloud droplet radius (microns): |
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! for liquid water clouds: |
! for liquid water clouds: |
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IF (ok_aie) THEN |
rad_chaud = merge(rad_chau2, rad_chau1, k <= 3) |
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cdnc(i, k) = 10.**(bl95_b0 + bl95_b1 & |
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* log10(MAX(sulfate(i, k), 1e-4))) * 1.e6 |
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cdnc_pi(i, k) = 10.**(bl95_b0 + bl95_b1 & |
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* log10(MAX(sulfate_pi(i, k), 1e-4))) * 1e6 |
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! Restrict to interval [20, 1000] cm^3: |
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cdnc(i, k) = MIN(1000e6, MAX(20e6, cdnc(i, k))) |
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cdnc_pi(i, k) = MIN(1000e6, MAX(20e6, cdnc_pi(i, k))) |
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! air density: play(i, k) / (RD * T(i, k)) |
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! factor 1.1: derive effective radius from volume-mean radius |
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! factor 1000 is the water density |
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! "_chaud" means that this is the CDR for liquid water clouds |
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rad_chaud = 1.1 * ((qlwp(i, k) * play(i, k) / (RD * T(i, k))) & |
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/ (4./3. * PI * 1000. * cdnc(i, k)))**(1./3.) |
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! Convert to micro m and set a lower limit: |
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rad_chaud = MAX(rad_chaud * 1e6, 5.) |
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! Pre-industrial cloud optical thickness |
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! "radius" is calculated as rad_chaud above (plus the |
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! ice cloud contribution) but using cdnc_pi instead of |
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! cdnc. |
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radius = 1.1 * ((qlwp(i, k) * play(i, k) / (RD * T(i, k))) & |
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/ (4./3. * PI * 1000. * cdnc_pi(i, k)))**(1./3.) |
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radius = MAX(radius * 1e6, 5.) |
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tc = t(i, k)-273.15 |
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rei = merge(3.5, 0.71 * tc + 61.29, tc <= -81.4) |
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if (zflwp(i) == 0.) radius = 1. |
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if (zfiwp(i) == 0. .or. rei <= 0.) rei = 1. |
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cldtaupi(i, k) = 3. / 2. * zflwp(i) / radius & |
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+ zfiwp(i) * (3.448e-03 + 2.431 / rei) |
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else |
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rad_chaud = merge(rad_chau2, rad_chau1, k <= 3) |
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ENDIF |
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! For output diagnostics |
! For output diagnostics |
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! Cloud droplet effective radius (micro m) |
! Cloud droplet effective radius (micro m) |
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clc(i, k) = 0. |
clc(i, k) = 0. |
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cltau(i, k) = 0. |
cltau(i, k) = 0. |
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clemi(i, k) = 0. |
clemi(i, k) = 0. |
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cldtaupi(i, k) = 0. |
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end if |
end if |
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ENDDO loop_vertical |
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IF (.NOT. ok_aie) cldtaupi(i, k) = cltau(i, k) |
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ENDDO |
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ENDDO loop_horizontal |
ENDDO loop_horizontal |
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! COMPUTE CLOUD LIQUID PATH AND TOTAL CLOUDINESS |
! COMPUTE CLOUD LIQUID PATH AND TOTAL CLOUDINESS |
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cldl(i)=1.-cldl(i) |
cldl(i)=1.-cldl(i) |
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ENDDO |
ENDDO |
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CALL histwrite_phy("re", re) |
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CALL histwrite_phy("fl", fl) |
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END SUBROUTINE newmicro |
END SUBROUTINE newmicro |
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end module newmicro_m |
end module newmicro_m |