1 |
|
|
!$Id $ |
2 |
|
|
|
3 |
|
|
SUBROUTINE lsc_scav(pdtime,it,iflag_lscav, aerosol, & |
4 |
|
|
oliq,flxr,flxs,rneb,beta_fisrt, & |
5 |
|
|
beta_v1,pplay,paprs,t,tr_seri, & |
6 |
|
|
d_tr_insc,d_tr_bcscav,d_tr_evap,qPrls) |
7 |
|
|
USE ioipsl |
8 |
|
|
USE dimphy |
9 |
|
|
USE mod_grid_phy_lmdz |
10 |
|
|
USE mod_phys_lmdz_para |
11 |
|
|
USE traclmdz_mod |
12 |
|
|
USE infotrac_phy,ONLY : nbtr |
13 |
|
|
USE iophy |
14 |
|
|
IMPLICIT NONE |
15 |
|
|
!===================================================================== |
16 |
|
|
! Objet : depot humide (lessivage et evaporation) de traceurs |
17 |
|
|
! Inspired by routines of Olivier Boucher (mars 1998) |
18 |
|
|
! author R. Pilon 10 octobre 2012 |
19 |
|
|
! last modification 16/01/2013 (reformulation partie evaporation) |
20 |
|
|
!===================================================================== |
21 |
|
|
|
22 |
|
|
include "chem.h" |
23 |
|
|
include "YOMCST.h" |
24 |
|
|
include "YOECUMF.h" |
25 |
|
|
|
26 |
|
|
! inputs |
27 |
|
|
REAL,INTENT(IN) :: pdtime ! time step (s) |
28 |
|
|
INTEGER,INTENT(IN) :: it ! tracer number |
29 |
|
|
INTEGER,INTENT(IN) :: iflag_lscav ! LS scavenging param: 3=Reddy_Boucher2004, 4=3+RPilon. |
30 |
|
|
REAL,DIMENSION(klon,klev+1),INTENT(IN) :: flxr ! flux precipitant de pluie |
31 |
|
|
REAL,DIMENSION(klon,klev+1),INTENT(IN) :: flxs ! flux precipitant de neige |
32 |
|
|
REAL,INTENT(IN) :: oliq ! contenu en eau liquide dans le nuage (kg/kg) |
33 |
|
|
REAL,DIMENSION(klon,klev),INTENT(IN) :: rneb |
34 |
|
|
REAL,DIMENSION(klon,klev),INTENT(IN) :: pplay ! pression |
35 |
|
|
REAL,DIMENSION(klon,klev+1),INTENT(IN) :: paprs ! pression |
36 |
|
|
REAL,DIMENSION(klon,klev),INTENT(IN) :: t ! temperature |
37 |
|
|
! tracers |
38 |
|
|
LOGICAL,DIMENSION(nbtr), INTENT(IN) :: aerosol |
39 |
|
|
REAL,DIMENSION(klon,klev,nbtr),INTENT(IN) :: tr_seri ! q de traceur |
40 |
|
|
REAL,DIMENSION(klon,klev),INTENT(IN) :: beta_fisrt ! taux de conversion de l'eau cond |
41 |
|
|
REAL,DIMENSION(klon,klev),INTENT(OUT) :: beta_v1 ! -- (originale version) |
42 |
|
|
REAL,DIMENSION(klon) :: his_dh ! tendance de traceur integre verticalement |
43 |
|
|
REAL,DIMENSION(klon,klev,nbtr),INTENT(OUT) :: d_tr_insc ! tendance du traceur |
44 |
|
|
REAL,DIMENSION(klon,klev,nbtr),INTENT(OUT) :: d_tr_bcscav ! tendance de traceur |
45 |
|
|
REAL,DIMENSION(klon,klev,nbtr),INTENT(OUT) :: d_tr_evap |
46 |
|
|
REAL,DIMENSION(klon,nbtr),INTENT(OUT) :: qPrls !jyg: concentration tra dans pluie LS a la surf. |
47 |
|
|
REAL :: dxin,dxev ! tendance temporaire de traceur incloud |
48 |
|
|
REAL,DIMENSION(klon,klev) :: dxbc ! tendance temporaire de traceur bc |
49 |
|
|
|
50 |
|
|
! variables locales |
51 |
|
|
LOGICAL,SAVE :: debut=.TRUE. |
52 |
|
|
!$OMP THREADPRIVATE(debut) |
53 |
|
|
! |
54 |
|
|
REAL,PARAMETER :: henry=1.4 ! constante de Henry en mol/l/atm ~1.4 for gases |
55 |
|
|
REAL :: henry_t ! constante de Henry a T t (mol/l/atm) |
56 |
|
|
REAL,PARAMETER :: kk=2900. ! coefficient de dependence en T (K) |
57 |
|
|
REAL :: f_a ! rapport de la phase aqueuse a la phase gazeuse |
58 |
|
|
REAL :: beta ! taux de conversion de l'eau en pluie |
59 |
|
|
|
60 |
|
|
INTEGER :: i, k |
61 |
|
|
REAL,DIMENSION(klon,klev) :: scav ! water liquid content / fraction aqueuse du constituant |
62 |
|
|
REAL,DIMENSION(klon,klev) :: zrho |
63 |
|
|
REAL,DIMENSION(klon,klev) :: zdz |
64 |
|
|
REAL,DIMENSION(klon,klev) :: zmass ! layer mass |
65 |
|
|
|
66 |
|
|
REAL :: frac_ev ! cste pour la reevaporation : dropplet shrinking |
67 |
|
|
! frac_ev = frac_gas ou frac_aer |
68 |
|
|
REAL,PARAMETER :: frac_gas=1.0 ! cste pour la reevaporation pour les gaz |
69 |
|
|
REAL :: frac_aer ! cste pour la reevaporation pour les particules |
70 |
|
|
REAL,DIMENSION(klon,klev) :: deltaP ! P(i+1)-P(i) |
71 |
|
|
REAL,DIMENSION(klon,klev) :: beta_ev ! dP/P(i+1) |
72 |
|
|
|
73 |
|
|
! 101.325 m3/l x Pa/atm |
74 |
|
|
! R Pa.m3/mol/K |
75 |
|
|
! cste de dissolution pour le depot humide |
76 |
|
|
REAL,SAVE :: frac_fine_scav |
77 |
|
|
REAL,SAVE :: frac_coar_scav |
78 |
|
|
!$OMP THREADPRIVATE(frac_fine_scav, frac_coar_scav) |
79 |
|
|
|
80 |
|
|
! below-cloud scav variables |
81 |
|
|
! aerosol : alpha_r=0.001, gas 0.001 (Pruppacher & Klett 1967) |
82 |
|
|
REAL,SAVE :: alpha_r ! coefficient d'impaction pour la pluie |
83 |
|
|
REAL,SAVE :: alpha_s ! coefficient d'impaction pour la neige |
84 |
|
|
REAL,SAVE :: R_r ! mean raindrop radius (m) |
85 |
|
|
REAL,SAVE :: R_s ! mean snow crystal radius (m) |
86 |
|
|
!$OMP THREADPRIVATE(alpha_r, alpha_s, R_r, R_s) |
87 |
|
|
REAL :: pr, ps, ice, water |
88 |
|
|
! REAL :: conserv |
89 |
|
|
! |
90 |
|
|
! |
91 |
|
|
IF (debut) THEN |
92 |
|
|
! |
93 |
|
|
alpha_r=0.001 ! coefficient d'impaction pour la pluie |
94 |
|
|
alpha_s=0.01 ! coefficient d'impaction pour la neige |
95 |
|
|
R_r=0.001 ! mean raindrop radius (m) |
96 |
|
|
R_s=0.001 ! mean snow crystal radius (m) |
97 |
|
|
frac_fine_scav=0.7 |
98 |
|
|
frac_coar_scav=0.7 |
99 |
|
|
! Droplet size shrinks by evap |
100 |
|
|
frac_aer=0.5 |
101 |
|
|
! |
102 |
|
|
OPEN(99,file='lsc_scav_param.data',status='old', & |
103 |
|
|
form='formatted',err=9999) |
104 |
|
|
READ(99,*,end=9998) alpha_r |
105 |
|
|
READ(99,*,end=9998) alpha_s |
106 |
|
|
READ(99,*,end=9998) R_r |
107 |
|
|
READ(99,*,end=9998) R_s |
108 |
|
|
READ(99,*,end=9998) frac_fine_scav |
109 |
|
|
READ(99,*,end=9998) frac_coar_scav |
110 |
|
|
READ(99,*,end=9998) frac_aer |
111 |
|
|
9998 CONTINUE |
112 |
|
|
CLOSE(99) |
113 |
|
|
9999 CONTINUE |
114 |
|
|
|
115 |
|
|
print*,'alpha_r',alpha_r |
116 |
|
|
print*,'alpha_s',alpha_s |
117 |
|
|
print*,'R_r',R_r |
118 |
|
|
print*,'R_s',R_s |
119 |
|
|
print*,'frac_fine_scav',frac_fine_scav |
120 |
|
|
print*,'frac_coar_scav',frac_coar_scav |
121 |
|
|
print*,'frac_aer ev',frac_aer |
122 |
|
|
! |
123 |
|
|
ENDIF !(debut) |
124 |
|
|
!!!!!!!!!!!!!!!!!!!!!!!!!!! |
125 |
|
|
! |
126 |
|
|
! initialization |
127 |
|
|
dxin=0. |
128 |
|
|
dxev=0. |
129 |
|
|
beta_ev=0. |
130 |
|
|
|
131 |
|
|
DO i=1,klon |
132 |
|
|
his_dh(i)=0. |
133 |
|
|
ENDDO |
134 |
|
|
|
135 |
|
|
DO k=1,klev |
136 |
|
|
DO i=1, klon |
137 |
|
|
dxbc(i,k)=0. |
138 |
|
|
beta_v1(i,k)=0. |
139 |
|
|
deltaP(i,k)=0. |
140 |
|
|
ENDDO |
141 |
|
|
ENDDO |
142 |
|
|
|
143 |
|
|
! pressure and size of the layer |
144 |
|
|
DO k=klev, 1, -1 |
145 |
|
|
DO i=1, klon |
146 |
|
|
zrho(i,k)=pplay(i,k)/t(i,k)/RD |
147 |
|
|
zdz(i,k)=(paprs(i,k)-paprs(i,k+1))/zrho(i,k)/RG |
148 |
|
|
zmass(i,k)=(paprs(i,k)-paprs(i,k+1))/RG |
149 |
|
|
ENDDO |
150 |
|
|
ENDDO |
151 |
|
|
|
152 |
|
|
!jyg< |
153 |
|
|
!! Temporary correction: all non-aerosol tracers are dealt with in the same way. |
154 |
|
|
!! Should be updated once it has been decided how gases should be dealt with. |
155 |
|
|
IF (aerosol(it)) THEN |
156 |
|
|
frac_ev=frac_aer |
157 |
|
|
ELSE ! gas |
158 |
|
|
frac_ev=frac_gas |
159 |
|
|
ENDIF |
160 |
|
|
! |
161 |
|
|
!jyg< |
162 |
|
|
IF (aerosol(it)) THEN ! aerosol |
163 |
|
|
DO k=1, klev |
164 |
|
|
DO i=1, klon |
165 |
|
|
scav(i,k)=frac_fine_scav |
166 |
|
|
ENDDO |
167 |
|
|
ENDDO |
168 |
|
|
ELSE ! gas |
169 |
|
|
DO k=1, klev |
170 |
|
|
DO i=1, klon |
171 |
|
|
henry_t=henry*exp(-kk*(1./298.-1./t(i,k))) ! mol/l/atm |
172 |
|
|
f_a=henry_t/101.325*R*t(i,k)*oliq*zrho(i,k)/rho_water |
173 |
|
|
scav(i,k)=f_a/(1.+f_a) |
174 |
|
|
ENDDO |
175 |
|
|
ENDDO |
176 |
|
|
ENDIF |
177 |
|
|
|
178 |
|
|
DO k=klev-1, 1, -1 |
179 |
|
|
DO i=1, klon |
180 |
|
|
! incloud scavenging |
181 |
|
|
IF (iflag_lscav .EQ. 4) THEN |
182 |
|
|
beta=beta_fisrt(i,k)*rneb(i,k) |
183 |
|
|
ELSE |
184 |
|
|
beta=flxr(i,k)-flxr(i,k+1)+flxs(i,k)-flxs(i,k+1) |
185 |
|
|
beta=beta/zmass(i,k)/oliq |
186 |
|
|
beta=MAX(0.,beta) |
187 |
|
|
ENDIF ! (iflag_lscav .eq. 4) |
188 |
|
|
beta_v1(i,k)=beta !! for output |
189 |
|
|
! |
190 |
|
|
dxin=tr_seri(i,k,it)*(exp(-scav(i,k)*beta*pdtime)-1.) |
191 |
|
|
his_dh(i)=his_dh(i)-dxin*zmass(i,k)/pdtime ! kg/m2/s |
192 |
|
|
d_tr_insc(i,k,it)=dxin ! kg/kg/timestep |
193 |
|
|
|
194 |
|
|
! below-cloud impaction |
195 |
|
|
!jyg< |
196 |
|
|
IF (.NOT.aerosol(it)) THEN |
197 |
|
|
d_tr_bcscav(i,k,it)=0. |
198 |
|
|
ELSE |
199 |
|
|
pr=0.5*(flxr(i,k)+flxr(i,k+1)) |
200 |
|
|
ps=0.5*(flxs(i,k)+flxs(i,k+1)) |
201 |
|
|
water=pr*alpha_r/R_r/rho_water |
202 |
|
|
ice=ps*alpha_s/R_s/rho_ice |
203 |
|
|
dxbc(i,k)=-3./4.*tr_seri(i,k,it)*pdtime*(water+ice) |
204 |
|
|
! add tracers from below cloud scav in his_dh |
205 |
|
|
his_dh(i)=his_dh(i)-dxbc(i,k)*zmass(i,k)/pdtime ! kg/m2/s |
206 |
|
|
d_tr_bcscav(i,k,it)=dxbc(i,k) ! kg/kg/timestep |
207 |
|
|
ENDIF |
208 |
|
|
|
209 |
|
|
! reevaporation |
210 |
|
|
deltaP(i,k)=flxr(i,k+1)+flxs(i,k+1)-flxr(i,k)-flxs(i,k) |
211 |
|
|
deltaP(i,k)=max(deltaP(i,k),0.) |
212 |
|
|
|
213 |
|
|
IF (flxr(i,k+1)+flxs(i,k+1).GT.1.e-16) THEn |
214 |
|
|
beta_ev(i,k)=deltaP(i,k)/(flxr(i,k+1)+flxs(i,k+1)) |
215 |
|
|
ELSE |
216 |
|
|
beta_ev(i,k)=0. |
217 |
|
|
ENDIF |
218 |
|
|
|
219 |
|
|
beta_ev(i,k)=max(min(1.,beta_ev(i,k)),0.) |
220 |
|
|
|
221 |
|
|
!jyg |
222 |
|
|
IF (ABS(1.-(1.-frac_ev)*beta_ev(i,k)).GT.1.e-16) THEN |
223 |
|
|
! remove tracers from precipitation owing to release by evaporation in his_dh |
224 |
|
|
dxev=frac_ev*beta_ev(i,k)*his_dh(i)*pdtime/zmass(i,k)/(1.-(1.-frac_ev)*beta_ev(i,k)) |
225 |
|
|
his_dh(i)=his_dh(i)*(1.-frac_ev*beta_ev(i,k)/(1.-(1.-frac_ev)*beta_ev(i,k))) |
226 |
|
|
ELSE |
227 |
|
|
dxev=his_dh(i)*pdtime/zmass(i,k) |
228 |
|
|
his_dh(i)=0. |
229 |
|
|
ENDIF |
230 |
|
|
! |
231 |
|
|
! print*, k, 'beta_ev',beta_ev |
232 |
|
|
! remove tracers from precipitation owing to release by evaporation in his_dh |
233 |
|
|
! dxev=frac_ev*deltaP(i,k)*pdtime * his_dh(i) /(zrho(i,k)*zdz(i,k)) |
234 |
|
|
!rplmd |
235 |
|
|
! dxev=frac_ev*deltaP(i,k)*his_dh(i) *pdtime/(zrho(i,k)*zdz(i,k))/max(flxr(i,k)+flxs(i,k),1.e-16) |
236 |
|
|
|
237 |
|
|
d_tr_evap(i,k,it)=dxev ! kg/kg/timestep |
238 |
|
|
! |
239 |
|
|
ENDDO |
240 |
|
|
ENDDO |
241 |
|
|
! |
242 |
|
|
DO i = 1,klon |
243 |
|
|
qPrls(i,it) = his_dh(i)/max(flxr(i,1)+flxs(i,1),1.e-16) |
244 |
|
|
ENDDO |
245 |
|
|
! |
246 |
|
|
! test de conservation |
247 |
|
|
! conserv=0. |
248 |
|
|
! DO k= klev,1,-1 |
249 |
|
|
! DO i=1, klon |
250 |
|
|
! conserv=conserv+d_tr_insc(i,k,it)*(paprs(i,k)-paprs(i,k+1))/RG & |
251 |
|
|
! +d_tr_bcscav(i,k,it)*(paprs(i,k)-paprs(i,k+1))/RG & |
252 |
|
|
! +d_tr_evap(i,k,it)*(paprs(i,k)-paprs(i,k+1))/RG |
253 |
|
|
! if(it.eq.3) write(*,'(I2,2X,a,e20.12,2X,a,e20.12,2X,a,e20.12,2X,a,e20.12)'),& |
254 |
|
|
! k,'lsc conserv ',conserv,'insc',d_tr_insc(i,k,it),'bc',d_tr_bcscav(i,k,it),'ev',d_tr_evap(i,k,it) |
255 |
|
|
! ENDDO |
256 |
|
|
! ENDDO |
257 |
|
|
|
258 |
|
|
END SUBROUTINE lsc_scav |