4 |
|
|
5 |
contains |
contains |
6 |
|
|
7 |
SUBROUTINE newmicro (paprs, play, t, qlwp, clc, cltau, clemi, cldh, & |
SUBROUTINE newmicro (paprs, play, t, qlwp, clc, cldtau, clemi, cldh, cldl, & |
8 |
cldl, cldm, cldt, ctlwp, flwp, fiwp, flwc, fiwc, ok_aie, sulfate, & |
cldm, cldt, ctlwp, flwp, fiwp, flwc, fiwc) |
|
sulfate_pi, bl95_b0, bl95_b1, cldtaupi, re, fl) |
|
9 |
|
|
10 |
! 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 |
11 |
|
|
12 |
! Authors: Z. X. Li (LMD/CNRS), Johannes Quaas |
! Authors: Z. X. Li (LMD/CNRS), Johannes Quaas |
13 |
! Date: 1993/09/10 |
! Date: 1993/09/10 |
14 |
! Objet: calcul de l'épaisseur optique et de l'émissivité des nuages. |
! Objet: calcul de l'\'epaisseur optique et de l'\'emissivit\'e des nuages. |
15 |
|
|
16 |
USE conf_phys_m, ONLY: rad_chau1, rad_chau2 |
USE conf_phys_m, ONLY: rad_chau1, rad_chau2 |
17 |
USE dimphy, ONLY: klev, klon |
USE dimphy, ONLY: klev, klon |
18 |
USE suphec_m, ONLY: rd, rg |
USE histwrite_phy_m, ONLY: histwrite_phy |
19 |
use nr_util, only: pi |
USE suphec_m, ONLY: rg |
20 |
|
|
21 |
REAL, intent(in):: paprs(:, :) ! (klon, klev+1) |
REAL, intent(in):: paprs(:, :) ! (klon, klev+1) |
22 |
real, intent(in):: play(:, :) ! (klon, klev) |
real, intent(in):: play(:, :) ! (klon, klev) |
23 |
REAL, intent(in):: t(:, :) ! (klon, klev) temperature |
REAL, intent(in):: t(:, :) ! (klon, klev) temperature |
24 |
|
|
25 |
REAL, intent(in):: qlwp(:, :) ! (klon, klev) |
REAL, intent(in):: qlwp(:, :) ! (klon, klev) |
26 |
! eau liquide nuageuse dans l'atmosphère (kg/kg) |
! eau liquide nuageuse dans l'atmosphère (kg / kg) |
27 |
|
|
28 |
REAL, intent(inout):: clc(:, :) ! (klon, klev) |
REAL, intent(inout):: clc(:, :) ! (klon, klev) |
29 |
! couverture nuageuse pour le rayonnement (0 à 1) |
! couverture nuageuse pour le rayonnement (0 à 1) |
30 |
|
|
31 |
REAL, intent(out):: cltau(:, :) ! (klon, klev) épaisseur optique des nuages |
REAL, intent(out):: cldtau(:, :) ! (klon, klev) |
32 |
REAL, intent(out):: clemi(:, :) ! (klon, klev) émissivité des nuages (0 à 1) |
! \'epaisseur optique des nuages |
33 |
|
|
34 |
|
REAL, intent(out):: clemi(:, :) ! (klon, klev) |
35 |
|
! \'emissivit\'e des nuages (0 à 1) |
36 |
|
|
37 |
REAL, intent(out):: cldh(:), cldl(:), cldm(:), cldt(:) ! (klon) |
REAL, intent(out):: cldh(:), cldl(:), cldm(:), cldt(:) ! (klon) |
38 |
REAL, intent(out):: ctlwp(:) ! (klon) |
REAL, intent(out):: ctlwp(:) ! (klon) |
39 |
REAL, intent(out):: flwp(:), fiwp(:) ! (klon) |
REAL, intent(out):: flwp(:), fiwp(:) ! (klon) |
40 |
REAL, intent(out):: flwc(:, :), fiwc(:, :) ! (klon, klev) |
REAL, intent(out):: flwc(:, :), fiwc(:, :) ! (klon, klev) |
|
LOGICAL, intent(in):: ok_aie ! apply aerosol indirect effect |
|
41 |
|
|
42 |
REAL, intent(in):: sulfate(:, :) ! (klon, klev) |
! Local: |
|
! sulfate aerosol mass concentration (micro g m-3) |
|
|
|
|
|
REAL, intent(in):: sulfate_pi(:, :) ! (klon, klev) |
|
|
! sulfate aerosol mass concentration (micro g m-3), pre-industrial value |
|
|
|
|
|
REAL, intent(in):: bl95_b0, bl95_b1 |
|
|
! Parameters in equation (D) of Boucher and Lohmann (1995, Tellus |
|
|
! B). They link cloud droplet number concentration to aerosol mass |
|
|
! concentration. |
|
|
|
|
|
REAL, intent(out):: cldtaupi(:, :) ! (klon, klev) |
|
|
! pre-industrial value of cloud optical thickness, needed for the |
|
|
! diagnosis of the aerosol indirect radiative forcing (see |
|
|
! radlwsw) |
|
43 |
|
|
44 |
REAL, intent(out):: re(:, :) ! (klon, klev) |
REAL re(klon, klev) |
45 |
! cloud droplet effective radius multiplied by fl (micro m) |
! cloud droplet effective radius multiplied by fl (micro m) |
46 |
|
|
47 |
REAL, intent(out):: fl(:, :) ! (klon, klev) |
REAL fl(klon, klev) |
48 |
! Denominator to re, introduced to avoid problems in the averaging |
! Denominator to re, introduced to avoid problems in the averaging |
49 |
! of the output. fl is the fraction of liquid water clouds within |
! of the output. fl is the fraction of liquid water clouds within |
50 |
! a grid cell. |
! a grid cell. |
51 |
|
|
|
! Local: |
|
|
|
|
52 |
REAL, PARAMETER:: cetahb = 0.45, cetamb = 0.8 |
REAL, PARAMETER:: cetahb = 0.45, cetamb = 0.8 |
53 |
INTEGER i, k |
INTEGER i, k |
54 |
REAL zflwp(klon), fice |
REAL zflwp |
55 |
REAL radius, rad_chaud |
real fice ! fraction of ice in cloud |
56 |
|
REAL rad_chaud |
57 |
REAL, PARAMETER:: coef_chau = 0.13 |
REAL, PARAMETER:: coef_chau = 0.13 |
58 |
REAL, PARAMETER:: seuil_neb = 0.001, t_glace = 273. - 15. |
REAL, PARAMETER:: seuil_neb = 0.001, t_glace = 258. |
59 |
real rel, tc, rei, zfiwp(klon) |
real rel, tc, rei, zfiwp |
60 |
real k_ice |
real k_ice |
61 |
real, parameter:: k_ice0 = 0.005 ! units=m2/g |
real, parameter:: k_ice0 = 0.005 ! units=m2 / g |
62 |
real, parameter:: DF = 1.66 ! diffusivity factor |
real, parameter:: DF = 1.66 ! diffusivity factor |
|
REAL cdnc(klon, klev) ! cloud droplet number concentration (m-3) |
|
|
|
|
|
REAL cdnc_pi(klon, klev) |
|
|
! cloud droplet number concentration, pre-industrial value (m-3) |
|
63 |
|
|
64 |
!----------------------------------------------------------------- |
!----------------------------------------------------------------- |
65 |
|
|
66 |
! Calculer l'épaisseur optique et l'émissivité des nuages |
! Calculer l'\'epaisseur optique et l'\'emissivit\'e des nuages |
67 |
|
|
68 |
loop_horizontal: DO i = 1, klon |
loop_horizontal: DO i = 1, klon |
69 |
flwp(i) = 0. |
flwp(i) = 0. |
70 |
fiwp(i) = 0. |
fiwp(i) = 0. |
71 |
|
|
72 |
DO k = 1, klev |
loop_vertical: DO k = 1, klev |
73 |
clc(i, k) = MAX(clc(i, k), seuil_neb) |
clc(i, k) = MAX(clc(i, k), seuil_neb) |
74 |
|
|
75 |
! liquid/ice cloud water paths: |
! liquid/ice cloud water paths: |
76 |
|
|
77 |
|
! Linear transition: |
78 |
fice = 1. - (t(i, k) - t_glace) / (273.13 - t_glace) |
fice = 1. - (t(i, k) - t_glace) / (273.13 - t_glace) |
79 |
fice = MIN(MAX(fice, 0.), 1.) |
fice = MIN(MAX(fice, 0.), 1.) |
80 |
|
|
81 |
zflwp(i) = 1000. * (1. - fice) * qlwp(i, k) / clc(i, k) & |
zflwp = 1000. * (1. - fice) * qlwp(i, k) / clc(i, k) & |
82 |
* (paprs(i, k) - paprs(i, k + 1)) / RG |
* (paprs(i, k) - paprs(i, k + 1)) / RG |
83 |
zfiwp(i) = 1000. * fice * qlwp(i, k) / clc(i, k) & |
zfiwp = 1000. * fice * qlwp(i, k) / clc(i, k) & |
84 |
* (paprs(i, k) - paprs(i, k + 1)) / RG |
* (paprs(i, k) - paprs(i, k + 1)) / RG |
85 |
|
|
86 |
flwp(i) = flwp(i) & |
flwp(i) = flwp(i) & |
96 |
! effective cloud droplet radius (microns): |
! effective cloud droplet radius (microns): |
97 |
|
|
98 |
! for liquid water clouds: |
! for liquid water clouds: |
99 |
IF (ok_aie) THEN |
rad_chaud = merge(rad_chau2, rad_chau1, k <= 3) |
100 |
cdnc(i, k) = 10.**(bl95_b0 + bl95_b1 & |
|
|
* log10(MAX(sulfate(i, k), 1e-4)) + 6.) |
|
|
cdnc_pi(i, k) = 10.**(bl95_b0 + bl95_b1 & |
|
|
* log10(MAX(sulfate_pi(i, k), 1e-4)) + 6.) |
|
|
|
|
|
! Restrict to interval [20, 1000] cm-3: |
|
|
cdnc(i, k) = MIN(1000e6, MAX(20e6, cdnc(i, k))) |
|
|
cdnc_pi(i, k) = MIN(1000e6, MAX(20e6, cdnc_pi(i, k))) |
|
|
|
|
|
! air density: play(i, k) / (RD * T(i, k)) |
|
|
! factor 1.1: derive effective radius from volume-mean radius |
|
|
! factor 1000 is the water density |
|
|
! "_chaud" means that this is the CDR for liquid water clouds |
|
|
|
|
|
rad_chaud = 1.1 * ((qlwp(i, k) * play(i, k) / (RD * T(i, k))) & |
|
|
/ (4./3. * PI * 1000. * cdnc(i, k)))**(1./3.) |
|
|
|
|
|
! Convert to micro m and set a lower limit: |
|
|
rad_chaud = MAX(rad_chaud * 1e6, 5.) |
|
|
|
|
|
! Pre-industrial cloud optical thickness |
|
|
|
|
|
! "radius" is calculated as rad_chaud above (plus the |
|
|
! ice cloud contribution) but using cdnc_pi instead of |
|
|
! cdnc. |
|
|
radius = 1.1 * ((qlwp(i, k) * play(i, k) / (RD * T(i, k))) & |
|
|
/ (4./3. * PI * 1000. * cdnc_pi(i, k)))**(1./3.) |
|
|
radius = MAX(radius * 1e6, 5.) |
|
|
|
|
|
tc = t(i, k)-273.15 |
|
|
rei = merge(3.5, 0.71 * tc + 61.29, tc <= -81.4) |
|
|
if (zflwp(i) == 0.) radius = 1. |
|
|
if (zfiwp(i) == 0. .or. rei <= 0.) rei = 1. |
|
|
cldtaupi(i, k) = 3. / 2. * zflwp(i) / radius & |
|
|
+ zfiwp(i) * (3.448e-03 + 2.431 / rei) |
|
|
else |
|
|
rad_chaud = merge(rad_chau2, rad_chau1, k <= 3) |
|
|
ENDIF |
|
101 |
! For output diagnostics |
! For output diagnostics |
102 |
|
|
103 |
! Cloud droplet effective radius (micro m) |
! Cloud droplet effective radius (micro m) |
119 |
tc = t(i, k)-273.15 |
tc = t(i, k)-273.15 |
120 |
rei = merge(3.5, 0.71 * tc + 61.29, tc <= -81.4) |
rei = merge(3.5, 0.71 * tc + 61.29, tc <= -81.4) |
121 |
|
|
122 |
! cloud optical thickness: |
! Cloud optical thickness: |
123 |
|
! (for liquid clouds, traditional formula, for ice clouds, |
124 |
! (for liquid clouds, traditional formula, |
! Ebert and Curry (1992)) |
125 |
! for ice clouds, Ebert & Curry (1992)) |
if (zflwp == 0.) rel = 1. |
126 |
|
if (zfiwp == 0. .or. rei <= 0.) rei = 1. |
127 |
if (zflwp(i) == 0.) rel = 1. |
cldtau(i, k) = 3. / 2. * (zflwp / rel) & |
128 |
if (zfiwp(i) == 0. .or. rei <= 0.) rei = 1. |
+ zfiwp * (3.448e-03 + 2.431 / rei) |
|
cltau(i, k) = 3./2. * (zflwp(i)/rel) & |
|
|
+ zfiwp(i) * (3.448e-03 + 2.431/rei) |
|
129 |
|
|
130 |
! cloud infrared emissivity: |
! cloud infrared emissivity: |
131 |
|
|
135 |
! Ebert and Curry (1992) formula as used by Kiehl & Zender (1995): |
! Ebert and Curry (1992) formula as used by Kiehl & Zender (1995): |
136 |
k_ice = k_ice0 + 1. / rei |
k_ice = k_ice0 + 1. / rei |
137 |
|
|
138 |
clemi(i, k) = 1. - EXP(- coef_chau * zflwp(i) - DF * k_ice * zfiwp(i)) |
clemi(i, k) = 1. - EXP(- coef_chau * zflwp - DF * k_ice * zfiwp) |
139 |
|
|
140 |
if (clc(i, k) <= seuil_neb) then |
if (clc(i, k) <= seuil_neb) then |
141 |
clc(i, k) = 0. |
clc(i, k) = 0. |
142 |
cltau(i, k) = 0. |
cldtau(i, k) = 0. |
143 |
clemi(i, k) = 0. |
clemi(i, k) = 0. |
|
cldtaupi(i, k) = 0. |
|
144 |
end if |
end if |
145 |
|
ENDDO loop_vertical |
|
IF (.NOT. ok_aie) cldtaupi(i, k) = cltau(i, k) |
|
|
ENDDO |
|
146 |
ENDDO loop_horizontal |
ENDDO loop_horizontal |
147 |
|
|
148 |
! COMPUTE CLOUD LIQUID PATH AND TOTAL CLOUDINESS |
! COMPUTE CLOUD LIQUID PATH AND TOTAL CLOUDINESS |
177 |
cldl(i)=1.-cldl(i) |
cldl(i)=1.-cldl(i) |
178 |
ENDDO |
ENDDO |
179 |
|
|
180 |
|
CALL histwrite_phy("re", re) |
181 |
|
CALL histwrite_phy("fl", fl) |
182 |
|
|
183 |
END SUBROUTINE newmicro |
END SUBROUTINE newmicro |
184 |
|
|
185 |
end module newmicro_m |
end module newmicro_m |