1 | ! |
---|
2 | ! $Id: iniacademic.F90 1625 2012-05-09 13:14:48Z jghattas $ |
---|
3 | ! |
---|
4 | SUBROUTINE iniacademic(vcov,ucov,teta,q,masse,ps,phis,time_0) |
---|
5 | |
---|
6 | USE filtreg_mod |
---|
7 | USE infotrac, ONLY : nqtot |
---|
8 | USE control_mod, ONLY: day_step,planet_type |
---|
9 | #ifdef CPP_IOIPSL |
---|
10 | USE IOIPSL |
---|
11 | #else |
---|
12 | ! if not using IOIPSL, we still need to use (a local version of) getin |
---|
13 | USE ioipsl_getincom |
---|
14 | #endif |
---|
15 | USE Write_Field |
---|
16 | |
---|
17 | ! Author: Frederic Hourdin original: 15/01/93 |
---|
18 | ! The forcing defined here is from Held and Suarez, 1994, Bulletin |
---|
19 | ! of the American Meteorological Society, 75, 1825. |
---|
20 | |
---|
21 | IMPLICIT NONE |
---|
22 | |
---|
23 | ! Declararations: |
---|
24 | ! --------------- |
---|
25 | |
---|
26 | include "dimensions.h" |
---|
27 | include "paramet.h" |
---|
28 | include "comvert.h" |
---|
29 | include "comconst.h" |
---|
30 | include "comgeom.h" |
---|
31 | include "academic.h" |
---|
32 | include "ener.h" |
---|
33 | include "temps.h" |
---|
34 | include "iniprint.h" |
---|
35 | include "logic.h" |
---|
36 | |
---|
37 | ! Arguments: |
---|
38 | ! ---------- |
---|
39 | |
---|
40 | real time_0 |
---|
41 | |
---|
42 | ! variables dynamiques |
---|
43 | REAL vcov(ip1jm,llm),ucov(ip1jmp1,llm) ! vents covariants |
---|
44 | REAL teta(ip1jmp1,llm) ! temperature potentielle |
---|
45 | REAL q(ip1jmp1,llm,nqtot) ! champs advectes |
---|
46 | REAL ps(ip1jmp1) ! pression au sol |
---|
47 | REAL masse(ip1jmp1,llm) ! masse d'air |
---|
48 | REAL phis(ip1jmp1) ! geopotentiel au sol |
---|
49 | |
---|
50 | ! Local: |
---|
51 | ! ------ |
---|
52 | |
---|
53 | REAL p (ip1jmp1,llmp1 ) ! pression aux interfac.des couches |
---|
54 | REAL pks(ip1jmp1) ! exner au sol |
---|
55 | REAL pk(ip1jmp1,llm) ! exner au milieu des couches |
---|
56 | REAL pkf(ip1jmp1,llm) ! exner filt.au milieu des couches |
---|
57 | REAL phi(ip1jmp1,llm) ! geopotentiel |
---|
58 | REAL ddsin,zsig,tetapv,w_pv ! variables auxiliaires |
---|
59 | real tetastrat ! potential temperature in the stratosphere, in K |
---|
60 | real tetajl(jjp1,llm) |
---|
61 | INTEGER i,j,l,lsup,ij |
---|
62 | |
---|
63 | REAL teta0,ttp,delt_y,delt_z,eps ! Constantes pour profil de T |
---|
64 | REAL k_f,k_c_a,k_c_s ! Constantes de rappel |
---|
65 | LOGICAL ok_geost ! Initialisation vent geost. ou nul |
---|
66 | LOGICAL ok_pv ! Polar Vortex |
---|
67 | REAL phi_pv,dphi_pv,gam_pv ! Constantes pour polar vortex |
---|
68 | |
---|
69 | real zz,ran1 |
---|
70 | integer idum |
---|
71 | |
---|
72 | REAL alpha(ip1jmp1,llm),beta(ip1jmp1,llm),zdtvr |
---|
73 | |
---|
74 | character(len=*),parameter :: modname="iniacademic" |
---|
75 | character(len=80) :: abort_message |
---|
76 | |
---|
77 | !----------------------------------------------------------------------- |
---|
78 | ! 1. Initializations for Earth-like case |
---|
79 | ! -------------------------------------- |
---|
80 | ! |
---|
81 | ! initialize planet radius, rotation rate,... |
---|
82 | call conf_planete |
---|
83 | |
---|
84 | time_0=0. |
---|
85 | day_ref=1 |
---|
86 | annee_ref=0 |
---|
87 | |
---|
88 | im = iim |
---|
89 | jm = jjm |
---|
90 | day_ini = 1 |
---|
91 | dtvr = daysec/REAL(day_step) |
---|
92 | zdtvr=dtvr |
---|
93 | etot0 = 0. |
---|
94 | ptot0 = 0. |
---|
95 | ztot0 = 0. |
---|
96 | stot0 = 0. |
---|
97 | ang0 = 0. |
---|
98 | |
---|
99 | if (llm == 1) then |
---|
100 | ! specific initializations for the shallow water case |
---|
101 | kappa=1 |
---|
102 | endif |
---|
103 | |
---|
104 | CALL iniconst |
---|
105 | CALL inigeom |
---|
106 | CALL inifilr |
---|
107 | |
---|
108 | if (llm == 1) then |
---|
109 | ! initialize fields for the shallow water case, if required |
---|
110 | if (.not.read_start) then |
---|
111 | phis(:)=0. |
---|
112 | q(:,:,:)=0 |
---|
113 | CALL sw_case_williamson91_6(vcov,ucov,teta,masse,ps) |
---|
114 | endif |
---|
115 | endif |
---|
116 | |
---|
117 | academic_case: if (iflag_phys >= 2) then |
---|
118 | ! initializations |
---|
119 | |
---|
120 | ! 1. local parameters |
---|
121 | ! by convention, winter is in the southern hemisphere |
---|
122 | ! Geostrophic wind or no wind? |
---|
123 | ok_geost=.TRUE. |
---|
124 | CALL getin('ok_geost',ok_geost) |
---|
125 | ! Constants for Newtonian relaxation and friction |
---|
126 | k_f=1. !friction |
---|
127 | CALL getin('k_j',k_f) |
---|
128 | k_f=1./(daysec*k_f) |
---|
129 | k_c_s=4. !cooling surface |
---|
130 | CALL getin('k_c_s',k_c_s) |
---|
131 | k_c_s=1./(daysec*k_c_s) |
---|
132 | k_c_a=40. !cooling free atm |
---|
133 | CALL getin('k_c_a',k_c_a) |
---|
134 | k_c_a=1./(daysec*k_c_a) |
---|
135 | ! Constants for Teta equilibrium profile |
---|
136 | teta0=315. ! mean Teta (S.H. 315K) |
---|
137 | CALL getin('teta0',teta0) |
---|
138 | ttp=200. ! Tropopause temperature (S.H. 200K) |
---|
139 | CALL getin('ttp',ttp) |
---|
140 | eps=0. ! Deviation to N-S symmetry(~0-20K) |
---|
141 | CALL getin('eps',eps) |
---|
142 | delt_y=60. ! Merid Temp. Gradient (S.H. 60K) |
---|
143 | CALL getin('delt_y',delt_y) |
---|
144 | delt_z=10. ! Vertical Gradient (S.H. 10K) |
---|
145 | CALL getin('delt_z',delt_z) |
---|
146 | ! Polar vortex |
---|
147 | ok_pv=.false. |
---|
148 | CALL getin('ok_pv',ok_pv) |
---|
149 | phi_pv=-50. ! Latitude of edge of vortex |
---|
150 | CALL getin('phi_pv',phi_pv) |
---|
151 | phi_pv=phi_pv*pi/180. |
---|
152 | dphi_pv=5. ! Width of the edge |
---|
153 | CALL getin('dphi_pv',dphi_pv) |
---|
154 | dphi_pv=dphi_pv*pi/180. |
---|
155 | gam_pv=4. ! -dT/dz vortex (in K/km) |
---|
156 | CALL getin('gam_pv',gam_pv) |
---|
157 | |
---|
158 | ! 2. Initialize fields towards which to relax |
---|
159 | ! Friction |
---|
160 | knewt_g=k_c_a |
---|
161 | DO l=1,llm |
---|
162 | zsig=presnivs(l)/preff |
---|
163 | knewt_t(l)=(k_c_s-k_c_a)*MAX(0.,(zsig-0.7)/0.3) |
---|
164 | kfrict(l)=k_f*MAX(0.,(zsig-0.7)/0.3) |
---|
165 | ENDDO |
---|
166 | DO j=1,jjp1 |
---|
167 | clat4((j-1)*iip1+1:j*iip1)=cos(rlatu(j))**4 |
---|
168 | ENDDO |
---|
169 | |
---|
170 | ! Potential temperature |
---|
171 | DO l=1,llm |
---|
172 | zsig=presnivs(l)/preff |
---|
173 | tetastrat=ttp*zsig**(-kappa) |
---|
174 | tetapv=tetastrat |
---|
175 | IF ((ok_pv).AND.(zsig.LT.0.1)) THEN |
---|
176 | tetapv=tetastrat*(zsig*10.)**(kappa*cpp*gam_pv/1000./g) |
---|
177 | ENDIF |
---|
178 | DO j=1,jjp1 |
---|
179 | ! Troposphere |
---|
180 | ddsin=sin(rlatu(j)) |
---|
181 | tetajl(j,l)=teta0-delt_y*ddsin*ddsin+eps*ddsin & |
---|
182 | -delt_z*(1.-ddsin*ddsin)*log(zsig) |
---|
183 | if (planet_type=="giant") then |
---|
184 | tetajl(j,l)=teta0+(delt_y* & |
---|
185 | ((sin(rlatu(j)*3.14159*eps+0.0001))**2) & |
---|
186 | / ((rlatu(j)*3.14159*eps+0.0001)**2)) & |
---|
187 | -delt_z*log(zsig) |
---|
188 | endif |
---|
189 | ! Profil stratospherique isotherme (+vortex) |
---|
190 | w_pv=(1.-tanh((rlatu(j)-phi_pv)/dphi_pv))/2. |
---|
191 | tetastrat=tetastrat*(1.-w_pv)+tetapv*w_pv |
---|
192 | tetajl(j,l)=MAX(tetajl(j,l),tetastrat) |
---|
193 | ENDDO |
---|
194 | ENDDO |
---|
195 | |
---|
196 | ! CALL writefield('theta_eq',tetajl) |
---|
197 | |
---|
198 | do l=1,llm |
---|
199 | do j=1,jjp1 |
---|
200 | do i=1,iip1 |
---|
201 | ij=(j-1)*iip1+i |
---|
202 | tetarappel(ij,l)=tetajl(j,l) |
---|
203 | enddo |
---|
204 | enddo |
---|
205 | enddo |
---|
206 | |
---|
207 | ! 3. Initialize fields (if necessary) |
---|
208 | IF (.NOT. read_start) THEN |
---|
209 | ! surface pressure |
---|
210 | if (iflag_phys>2) then |
---|
211 | ! specific value for CMIP5 aqua/terra planets |
---|
212 | ! "Specify the initial dry mass to be equivalent to |
---|
213 | ! a global mean surface pressure (101325 minus 245) Pa." |
---|
214 | ps(:)=101080. |
---|
215 | else |
---|
216 | ! use reference surface pressure |
---|
217 | ps(:)=preff |
---|
218 | endif |
---|
219 | |
---|
220 | ! ground geopotential |
---|
221 | phis(:)=0. |
---|
222 | |
---|
223 | CALL pression ( ip1jmp1, ap, bp, ps, p ) |
---|
224 | if (pressure_exner) then |
---|
225 | CALL exner_hyb( ip1jmp1, ps, p,alpha,beta, pks, pk, pkf ) |
---|
226 | else |
---|
227 | call exner_milieu(ip1jmp1,ps,p,beta,pks,pk,pkf) |
---|
228 | endif |
---|
229 | CALL massdair(p,masse) |
---|
230 | |
---|
231 | ! bulk initialization of temperature |
---|
232 | teta(:,:)=tetarappel(:,:) |
---|
233 | |
---|
234 | ! geopotential |
---|
235 | CALL geopot(ip1jmp1,teta,pk,pks,phis,phi) |
---|
236 | |
---|
237 | ! winds |
---|
238 | if (ok_geost) then |
---|
239 | call ugeostr(phi,ucov) |
---|
240 | else |
---|
241 | ucov(:,:)=0. |
---|
242 | endif |
---|
243 | vcov(:,:)=0. |
---|
244 | |
---|
245 | ! bulk initialization of tracers |
---|
246 | if (planet_type=="earth") then |
---|
247 | ! Earth: first two tracers will be water |
---|
248 | do i=1,nqtot |
---|
249 | if (i == 1) q(:,:,i)=1.e-10 |
---|
250 | if (i == 2) q(:,:,i)=1.e-15 |
---|
251 | if (i.gt.2) q(:,:,i)=0. |
---|
252 | enddo |
---|
253 | else |
---|
254 | q(:,:,:)=0 |
---|
255 | endif ! of if (planet_type=="earth") |
---|
256 | |
---|
257 | ! add random perturbation to temperature |
---|
258 | idum = -1 |
---|
259 | zz = ran1(idum) |
---|
260 | idum = 0 |
---|
261 | do l=1,llm |
---|
262 | do ij=iip2,ip1jm |
---|
263 | teta(ij,l)=teta(ij,l)*(1.+0.005*ran1(idum)) |
---|
264 | enddo |
---|
265 | enddo |
---|
266 | |
---|
267 | ! maintain periodicity in longitude |
---|
268 | do l=1,llm |
---|
269 | do ij=1,ip1jmp1,iip1 |
---|
270 | teta(ij+iim,l)=teta(ij,l) |
---|
271 | enddo |
---|
272 | enddo |
---|
273 | |
---|
274 | ENDIF ! of IF (.NOT. read_start) |
---|
275 | endif academic_case |
---|
276 | |
---|
277 | END SUBROUTINE iniacademic |
---|