source: LMDZ5/trunk/libf/dyn3d/iniacademic.F90 @ 3847

Last change on this file since 3847 was 2622, checked in by Ehouarn Millour, 8 years ago

Some code tidying: turn ener.h into ener_mod.F90
EM

  • Property copyright set to
    Name of program: LMDZ
    Creation date: 1984
    Version: LMDZ5
    License: CeCILL version 2
    Holder: Laboratoire de m\'et\'eorologie dynamique, CNRS, UMR 8539
    See the license file in the root directory
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 9.3 KB
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[524]1!
[1403]2! $Id: iniacademic.F90 2622 2016-09-04 06:12:02Z fairhead $
[524]3!
[1472]4SUBROUTINE iniacademic(vcov,ucov,teta,q,masse,ps,phis,time_0)
[524]5
[2083]6  USE filtreg_mod, ONLY: inifilr
[2270]7  USE infotrac
[1472]8  USE control_mod, ONLY: day_step,planet_type
[1454]9#ifdef CPP_IOIPSL
[2083]10  USE IOIPSL, ONLY: getin
[1454]11#else
[1472]12  ! if not using IOIPSL, we still need to use (a local version of) getin
[2083]13  USE ioipsl_getincom, ONLY: getin
[1454]14#endif
[1472]15  USE Write_Field
[2021]16  use exner_hyb_m, only: exner_hyb
17  use exner_milieu_m, only: exner_milieu
[2597]18  USE comconst_mod, ONLY: cpp, kappa, g, daysec, dtvr, pi, im, jm
[2603]19  USE logic_mod, ONLY: iflag_phys, read_start
[2600]20  USE comvert_mod, ONLY: ap, bp, preff, presnivs, pressure_exner
[2601]21  USE temps_mod, ONLY: annee_ref, day_ini, day_ref
[2622]22  USE ener_mod, ONLY: etot0,ptot0,ztot0,stot0,ang0
[1146]23
[1472]24  !   Author:    Frederic Hourdin      original: 15/01/93
[1474]25  ! The forcing defined here is from Held and Suarez, 1994, Bulletin
26  ! of the American Meteorological Society, 75, 1825.
[524]27
[1472]28  IMPLICIT NONE
[524]29
[1472]30  !   Declararations:
31  !   ---------------
[524]32
[1472]33  include "dimensions.h"
34  include "paramet.h"
35  include "comgeom.h"
36  include "academic.h"
37  include "iniprint.h"
[524]38
[1472]39  !   Arguments:
40  !   ----------
[1146]41
[2083]42  REAL,INTENT(OUT) :: time_0
[1146]43
[2083]44  !   fields
45  REAL,INTENT(OUT) :: vcov(ip1jm,llm) ! meridional covariant wind
46  REAL,INTENT(OUT) :: ucov(ip1jmp1,llm) ! zonal covariant wind
47  REAL,INTENT(OUT) :: teta(ip1jmp1,llm) ! potential temperature (K)
48  REAL,INTENT(OUT) :: q(ip1jmp1,llm,nqtot) ! advected tracers (.../kg_of_air)
49  REAL,INTENT(OUT) :: ps(ip1jmp1) ! surface pressure (Pa)
50  REAL,INTENT(OUT) :: masse(ip1jmp1,llm) ! air mass in grid cell (kg)
51  REAL,INTENT(OUT) :: phis(ip1jmp1) ! surface geopotential
[524]52
[1472]53  !   Local:
54  !   ------
[524]55
[1472]56  REAL p (ip1jmp1,llmp1  )               ! pression aux interfac.des couches
57  REAL pks(ip1jmp1)                      ! exner au  sol
58  REAL pk(ip1jmp1,llm)                   ! exner au milieu des couches
59  REAL phi(ip1jmp1,llm)                  ! geopotentiel
[1474]60  REAL ddsin,zsig,tetapv,w_pv  ! variables auxiliaires
61  real tetastrat ! potential temperature in the stratosphere, in K
[1472]62  real tetajl(jjp1,llm)
63  INTEGER i,j,l,lsup,ij
[524]64
[1472]65  REAL teta0,ttp,delt_y,delt_z,eps ! Constantes pour profil de T
66  REAL k_f,k_c_a,k_c_s         ! Constantes de rappel
67  LOGICAL ok_geost             ! Initialisation vent geost. ou nul
68  LOGICAL ok_pv                ! Polar Vortex
69  REAL phi_pv,dphi_pv,gam_pv   ! Constantes pour polar vortex
[1454]70
[1472]71  real zz,ran1
72  integer idum
[524]73
[2021]74  REAL zdtvr
[1520]75 
76  character(len=*),parameter :: modname="iniacademic"
77  character(len=80) :: abort_message
[524]78
[2083]79
80  ! Sanity check: verify that options selected by user are not incompatible
[2087]81  if ((iflag_phys==1).and. .not. read_start) then
[2083]82    write(lunout,*) trim(modname)," error: if read_start is set to ", &
83    " false then iflag_phys should not be 1"
84    write(lunout,*) "You most likely want an aquaplanet initialisation", &
85    " (iflag_phys >= 100)"
86    call abort_gcm(modname,"incompatible iflag_phys==1 and read_start==.false.",1)
87  endif
88 
[1472]89  !-----------------------------------------------------------------------
90  ! 1. Initializations for Earth-like case
91  ! --------------------------------------
92  !
93  ! initialize planet radius, rotation rate,...
94  call conf_planete
[524]95
[1472]96  time_0=0.
97  day_ref=1
98  annee_ref=0
[1403]99
[1472]100  im         = iim
101  jm         = jjm
102  day_ini    = 1
103  dtvr    = daysec/REAL(day_step)
104  zdtvr=dtvr
105  etot0      = 0.
106  ptot0      = 0.
107  ztot0      = 0.
108  stot0      = 0.
109  ang0       = 0.
[524]110
[1472]111  if (llm == 1) then
112     ! specific initializations for the shallow water case
113     kappa=1
114  endif
[524]115
[1472]116  CALL iniconst
117  CALL inigeom
118  CALL inifilr
[524]119
[1472]120  if (llm == 1) then
121     ! initialize fields for the shallow water case, if required
122     if (.not.read_start) then
123        phis(:)=0.
124        q(:,:,:)=0
125        CALL sw_case_williamson91_6(vcov,ucov,teta,masse,ps)
126     endif
127  endif
[524]128
[1529]129  academic_case: if (iflag_phys >= 2) then
[1472]130     ! initializations
[524]131
[1472]132     ! 1. local parameters
133     ! by convention, winter is in the southern hemisphere
134     ! Geostrophic wind or no wind?
135     ok_geost=.TRUE.
136     CALL getin('ok_geost',ok_geost)
137     ! Constants for Newtonian relaxation and friction
138     k_f=1.                !friction
139     CALL getin('k_j',k_f)
140     k_f=1./(daysec*k_f)
141     k_c_s=4.  !cooling surface
142     CALL getin('k_c_s',k_c_s)
143     k_c_s=1./(daysec*k_c_s)
144     k_c_a=40. !cooling free atm
145     CALL getin('k_c_a',k_c_a)
146     k_c_a=1./(daysec*k_c_a)
147     ! Constants for Teta equilibrium profile
148     teta0=315.     ! mean Teta (S.H. 315K)
149     CALL getin('teta0',teta0)
150     ttp=200.       ! Tropopause temperature (S.H. 200K)
151     CALL getin('ttp',ttp)
152     eps=0.         ! Deviation to N-S symmetry(~0-20K)
153     CALL getin('eps',eps)
154     delt_y=60.     ! Merid Temp. Gradient (S.H. 60K)
155     CALL getin('delt_y',delt_y)
156     delt_z=10.     ! Vertical Gradient (S.H. 10K)
157     CALL getin('delt_z',delt_z)
158     ! Polar vortex
159     ok_pv=.false.
160     CALL getin('ok_pv',ok_pv)
161     phi_pv=-50.            ! Latitude of edge of vortex
162     CALL getin('phi_pv',phi_pv)
163     phi_pv=phi_pv*pi/180.
164     dphi_pv=5.             ! Width of the edge
165     CALL getin('dphi_pv',dphi_pv)
166     dphi_pv=dphi_pv*pi/180.
167     gam_pv=4.              ! -dT/dz vortex (in K/km)
168     CALL getin('gam_pv',gam_pv)
[524]169
[1472]170     ! 2. Initialize fields towards which to relax
171     ! Friction
172     knewt_g=k_c_a
173     DO l=1,llm
174        zsig=presnivs(l)/preff
175        knewt_t(l)=(k_c_s-k_c_a)*MAX(0.,(zsig-0.7)/0.3)
176        kfrict(l)=k_f*MAX(0.,(zsig-0.7)/0.3)
177     ENDDO
178     DO j=1,jjp1
179        clat4((j-1)*iip1+1:j*iip1)=cos(rlatu(j))**4
180     ENDDO
[524]181
[1472]182     ! Potential temperature
183     DO l=1,llm
184        zsig=presnivs(l)/preff
185        tetastrat=ttp*zsig**(-kappa)
186        tetapv=tetastrat
187        IF ((ok_pv).AND.(zsig.LT.0.1)) THEN
188           tetapv=tetastrat*(zsig*10.)**(kappa*cpp*gam_pv/1000./g)
189        ENDIF
190        DO j=1,jjp1
191           ! Troposphere
192           ddsin=sin(rlatu(j))
193           tetajl(j,l)=teta0-delt_y*ddsin*ddsin+eps*ddsin &
194                -delt_z*(1.-ddsin*ddsin)*log(zsig)
[1505]195           if (planet_type=="giant") then
196             tetajl(j,l)=teta0+(delt_y*                   &
197                ((sin(rlatu(j)*3.14159*eps+0.0001))**2)   &
198                / ((rlatu(j)*3.14159*eps+0.0001)**2))     &
199                -delt_z*log(zsig)
200           endif
[1472]201           ! Profil stratospherique isotherme (+vortex)
202           w_pv=(1.-tanh((rlatu(j)-phi_pv)/dphi_pv))/2.
203           tetastrat=tetastrat*(1.-w_pv)+tetapv*w_pv             
204           tetajl(j,l)=MAX(tetajl(j,l),tetastrat) 
205        ENDDO
206     ENDDO
[524]207
[1472]208     !          CALL writefield('theta_eq',tetajl)
[524]209
[1472]210     do l=1,llm
211        do j=1,jjp1
212           do i=1,iip1
213              ij=(j-1)*iip1+i
214              tetarappel(ij,l)=tetajl(j,l)
215           enddo
216        enddo
217     enddo
218
219     ! 3. Initialize fields (if necessary)
220     IF (.NOT. read_start) THEN
221        ! surface pressure
[1529]222        if (iflag_phys>2) then
[1561]223           ! specific value for CMIP5 aqua/terra planets
224           ! "Specify the initial dry mass to be equivalent to
225           !  a global mean surface pressure (101325 minus 245) Pa."
226           ps(:)=101080. 
227        else
228           ! use reference surface pressure
[1529]229           ps(:)=preff
230        endif
[1561]231       
[1472]232        ! ground geopotential
233        phis(:)=0.
234
235        CALL pression ( ip1jmp1, ap, bp, ps, p       )
[1625]236        if (pressure_exner) then
[2021]237          CALL exner_hyb( ip1jmp1, ps, p, pks, pk)
[1625]238        else
[2021]239          call exner_milieu(ip1jmp1,ps,p,pks,pk)
[1520]240        endif
[1472]241        CALL massdair(p,masse)
242
243        ! bulk initialization of temperature
244        teta(:,:)=tetarappel(:,:)
245
246        ! geopotential
247        CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
248
249        ! winds
250        if (ok_geost) then
251           call ugeostr(phi,ucov)
252        else
253           ucov(:,:)=0.
254        endif
255        vcov(:,:)=0.
256
257        ! bulk initialization of tracers
258        if (planet_type=="earth") then
259           ! Earth: first two tracers will be water
260           do i=1,nqtot
261              if (i == 1) q(:,:,i)=1.e-10
262              if (i == 2) q(:,:,i)=1.e-15
263              if (i.gt.2) q(:,:,i)=0.
[2270]264
265              ! CRisi: init des isotopes
266              ! distill de Rayleigh très simplifiée
267              if (ok_isotopes) then
268                if ((iso_num(i).gt.0).and.(zone_num(i).eq.0)) then         
269                   q(:,:,i)=q(:,:,iqpere(i))             &
270      &                  *tnat(iso_num(i))               &
271      &                  *(q(:,:,iqpere(i))/30.e-3)      &
272      &                  **(alpha_ideal(iso_num(i))-1)
273                endif               
274                if ((iso_num(i).gt.0).and.(zone_num(i).eq.1)) then
275                  q(:,:,i)=q(:,:,iqiso(iso_indnum(i),phase_num(i)))
276                endif
277              endif !if (ok_isotopes) then
278
[1472]279           enddo
280        else
281           q(:,:,:)=0
282        endif ! of if (planet_type=="earth")
283
[2270]284        if (ok_iso_verif) then
285           call check_isotopes_seq(q,1,ip1jmp1,'iniacademic_loc')
286        endif !if (ok_iso_verif) then
287
[1472]288        ! add random perturbation to temperature
289        idum  = -1
290        zz = ran1(idum)
291        idum  = 0
292        do l=1,llm
293           do ij=iip2,ip1jm
294              teta(ij,l)=teta(ij,l)*(1.+0.005*ran1(idum))
295           enddo
296        enddo
297
298        ! maintain periodicity in longitude
299        do l=1,llm
300           do ij=1,ip1jmp1,iip1
301              teta(ij+iim,l)=teta(ij,l)
302           enddo
303        enddo
304
305     ENDIF ! of IF (.NOT. read_start)
306  endif academic_case
307
308END SUBROUTINE iniacademic
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