! ! $Id: iniacademic.F90 1520 2011-05-23 11:37:09Z crisi $ ! SUBROUTINE iniacademic(vcov,ucov,teta,q,masse,ps,phis,time_0) USE filtreg_mod USE infotrac, ONLY : nqtot USE control_mod, ONLY: day_step,planet_type #ifdef CPP_IOIPSL USE IOIPSL #else ! if not using IOIPSL, we still need to use (a local version of) getin USE ioipsl_getincom #endif USE Write_Field ! Author: Frederic Hourdin original: 15/01/93 ! The forcing defined here is from Held and Suarez, 1994, Bulletin ! of the American Meteorological Society, 75, 1825. IMPLICIT NONE ! Declararations: ! --------------- include "dimensions.h" include "paramet.h" include "comvert.h" include "comconst.h" include "comgeom.h" include "academic.h" include "ener.h" include "temps.h" include "iniprint.h" include "logic.h" ! Arguments: ! ---------- real time_0 ! variables dynamiques REAL vcov(ip1jm,llm),ucov(ip1jmp1,llm) ! vents covariants REAL teta(ip1jmp1,llm) ! temperature potentielle REAL q(ip1jmp1,llm,nqtot) ! champs advectes REAL ps(ip1jmp1) ! pression au sol REAL masse(ip1jmp1,llm) ! masse d'air REAL phis(ip1jmp1) ! geopotentiel au sol ! Local: ! ------ REAL p (ip1jmp1,llmp1 ) ! pression aux interfac.des couches REAL pks(ip1jmp1) ! exner au sol REAL pk(ip1jmp1,llm) ! exner au milieu des couches REAL pkf(ip1jmp1,llm) ! exner filt.au milieu des couches REAL phi(ip1jmp1,llm) ! geopotentiel REAL ddsin,zsig,tetapv,w_pv ! variables auxiliaires real tetastrat ! potential temperature in the stratosphere, in K real tetajl(jjp1,llm) INTEGER i,j,l,lsup,ij REAL teta0,ttp,delt_y,delt_z,eps ! Constantes pour profil de T REAL k_f,k_c_a,k_c_s ! Constantes de rappel LOGICAL ok_geost ! Initialisation vent geost. ou nul LOGICAL ok_pv ! Polar Vortex REAL phi_pv,dphi_pv,gam_pv ! Constantes pour polar vortex real zz,ran1 integer idum REAL alpha(ip1jmp1,llm),beta(ip1jmp1,llm),zdtvr character(len=*),parameter :: modname="iniacademic" character(len=80) :: abort_message !----------------------------------------------------------------------- ! 1. Initializations for Earth-like case ! -------------------------------------- ! ! initialize planet radius, rotation rate,... call conf_planete time_0=0. day_ref=1 annee_ref=0 im = iim jm = jjm day_ini = 1 dtvr = daysec/REAL(day_step) zdtvr=dtvr etot0 = 0. ptot0 = 0. ztot0 = 0. stot0 = 0. ang0 = 0. if (llm == 1) then ! specific initializations for the shallow water case kappa=1 endif CALL iniconst CALL inigeom CALL inifilr if (llm == 1) then ! initialize fields for the shallow water case, if required if (.not.read_start) then phis(:)=0. q(:,:,:)=0 CALL sw_case_williamson91_6(vcov,ucov,teta,masse,ps) endif endif academic_case: if (iflag_phys == 2) then ! initializations ! 1. local parameters ! by convention, winter is in the southern hemisphere ! Geostrophic wind or no wind? ok_geost=.TRUE. CALL getin('ok_geost',ok_geost) ! Constants for Newtonian relaxation and friction k_f=1. !friction CALL getin('k_j',k_f) k_f=1./(daysec*k_f) k_c_s=4. !cooling surface CALL getin('k_c_s',k_c_s) k_c_s=1./(daysec*k_c_s) k_c_a=40. !cooling free atm CALL getin('k_c_a',k_c_a) k_c_a=1./(daysec*k_c_a) ! Constants for Teta equilibrium profile teta0=315. ! mean Teta (S.H. 315K) CALL getin('teta0',teta0) ttp=200. ! Tropopause temperature (S.H. 200K) CALL getin('ttp',ttp) eps=0. ! Deviation to N-S symmetry(~0-20K) CALL getin('eps',eps) delt_y=60. ! Merid Temp. Gradient (S.H. 60K) CALL getin('delt_y',delt_y) delt_z=10. ! Vertical Gradient (S.H. 10K) CALL getin('delt_z',delt_z) ! Polar vortex ok_pv=.false. CALL getin('ok_pv',ok_pv) phi_pv=-50. ! Latitude of edge of vortex CALL getin('phi_pv',phi_pv) phi_pv=phi_pv*pi/180. dphi_pv=5. ! Width of the edge CALL getin('dphi_pv',dphi_pv) dphi_pv=dphi_pv*pi/180. gam_pv=4. ! -dT/dz vortex (in K/km) CALL getin('gam_pv',gam_pv) ! 2. Initialize fields towards which to relax ! Friction knewt_g=k_c_a DO l=1,llm zsig=presnivs(l)/preff knewt_t(l)=(k_c_s-k_c_a)*MAX(0.,(zsig-0.7)/0.3) kfrict(l)=k_f*MAX(0.,(zsig-0.7)/0.3) ENDDO DO j=1,jjp1 clat4((j-1)*iip1+1:j*iip1)=cos(rlatu(j))**4 ENDDO ! Potential temperature DO l=1,llm zsig=presnivs(l)/preff tetastrat=ttp*zsig**(-kappa) tetapv=tetastrat IF ((ok_pv).AND.(zsig.LT.0.1)) THEN tetapv=tetastrat*(zsig*10.)**(kappa*cpp*gam_pv/1000./g) ENDIF DO j=1,jjp1 ! Troposphere ddsin=sin(rlatu(j)) tetajl(j,l)=teta0-delt_y*ddsin*ddsin+eps*ddsin & -delt_z*(1.-ddsin*ddsin)*log(zsig) if (planet_type=="giant") then tetajl(j,l)=teta0+(delt_y* & ((sin(rlatu(j)*3.14159*eps+0.0001))**2) & / ((rlatu(j)*3.14159*eps+0.0001)**2)) & -delt_z*log(zsig) endif ! Profil stratospherique isotherme (+vortex) w_pv=(1.-tanh((rlatu(j)-phi_pv)/dphi_pv))/2. tetastrat=tetastrat*(1.-w_pv)+tetapv*w_pv tetajl(j,l)=MAX(tetajl(j,l),tetastrat) ENDDO ENDDO ! CALL writefield('theta_eq',tetajl) do l=1,llm do j=1,jjp1 do i=1,iip1 ij=(j-1)*iip1+i tetarappel(ij,l)=tetajl(j,l) enddo enddo enddo ! 3. Initialize fields (if necessary) IF (.NOT. read_start) THEN ! surface pressure ps(:)=preff ! ground geopotential phis(:)=0. CALL pression ( ip1jmp1, ap, bp, ps, p ) if (disvert_type.eq.1) then CALL exner_hyb( ip1jmp1, ps, p,alpha,beta, pks, pk, pkf ) elseif (disvert_type.eq.2) then call exner_milieu(ip1jmp1,ps,p,beta,pks,pk,pkf) else write(abort_message,*) "Wrong value for disvert_type: ", & disvert_type call abort_gcm(modname,abort_message,0) endif CALL massdair(p,masse) ! bulk initialization of temperature teta(:,:)=tetarappel(:,:) ! geopotential CALL geopot(ip1jmp1,teta,pk,pks,phis,phi) ! winds if (ok_geost) then call ugeostr(phi,ucov) else ucov(:,:)=0. endif vcov(:,:)=0. ! bulk initialization of tracers if (planet_type=="earth") then ! Earth: first two tracers will be water do i=1,nqtot if (i == 1) q(:,:,i)=1.e-10 if (i == 2) q(:,:,i)=1.e-15 if (i.gt.2) q(:,:,i)=0. enddo else q(:,:,:)=0 endif ! of if (planet_type=="earth") ! add random perturbation to temperature idum = -1 zz = ran1(idum) idum = 0 do l=1,llm do ij=iip2,ip1jm teta(ij,l)=teta(ij,l)*(1.+0.005*ran1(idum)) enddo enddo ! maintain periodicity in longitude do l=1,llm do ij=1,ip1jmp1,iip1 teta(ij+iim,l)=teta(ij,l) enddo enddo ENDIF ! of IF (.NOT. read_start) endif academic_case END SUBROUTINE iniacademic