!WRF:MODEL_LAYER:PHYSICS ! MODULE module_sf_oml CONTAINS !---------------------------------------------------------------- SUBROUTINE OCEANML(tml,t0ml,hml,h0ml,huml,hvml,ust,u_phy,v_phy, & tmoml,f,g,oml_gamma, & XLAND,HFX,LH,TSK,GSW,GLW,EMISS, & DELTSM,STBOLT, & ids,ide, jds,jde, kds,kde, & ims,ime, jms,jme, kms,kme, & its,ite, jts,jte, kts,kte ) !---------------------------------------------------------------- IMPLICIT NONE !---------------------------------------------------------------- ! ! SUBROUTINE OCEANML CALCULATES THE SEA SURFACE TEMPERATURE (TSK) ! FROM A SIMPLE OCEAN MIXED LAYER MODEL BASED ON ! (Pollard, Rhines and Thompson (1973). ! !-- TML ocean mixed layer temperature (K) !-- T0ML ocean mixed layer temperature (K) at initial time !-- TMOML top 200 m ocean mean temperature (K) at initial time !-- HML ocean mixed layer depth (m) !-- H0ML ocean mixed layer depth (m) at initial time !-- HUML ocean mixed layer u component of wind !-- HVML ocean mixed layer v component of wind !-- OML_GAMMA deep water lapse rate (K m-1) !-- UAIR,VAIR lowest model level wind component !-- UST frictional velocity !-- HFX upward heat flux at the surface (W/m^2) !-- LH latent heat flux at the surface (W/m^2) !-- TSK surface temperature (K) !-- GSW downward short wave flux at ground surface (W/m^2) !-- GLW downward long wave flux at ground surface (W/m^2) !-- EMISS emissivity of the surface !-- XLAND land mask (1 for land, 2 for water) !-- STBOLT Stefan-Boltzmann constant (W/m^2/K^4) !-- F Coriolis parameter !-- DT time step (second) !-- G acceleration due to gravity INTEGER, INTENT(IN ) :: ids,ide, jds,jde, kds,kde, & ims,ime, jms,jme, kms,kme, & its,ite, jts,jte, kts,kte REAL, INTENT(IN ) :: DELTSM, STBOLT REAL, DIMENSION( ims:ime, jms:jme ) , & INTENT(IN ) :: EMISS, & XLAND, & GSW, & GLW, & HFX, & LH REAL, DIMENSION( ims:ime, jms:jme ) , & INTENT(INOUT) :: TSK REAL, DIMENSION( ims:ime, jms:jme ), INTENT(INOUT) :: & TML,T0ML,HML,H0ML,HUML,HVML REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), INTENT(IN ) :: & U_PHY,V_PHY REAL, DIMENSION( ims:ime, jms:jme ), INTENT(IN ) :: & UST, F, TMOML REAL, INTENT(IN ) :: G REAL, INTENT(IN ) :: OML_GAMMA ! LOCAL VARS INTEGER :: I,J DO J=jts,jte CALL wrf_debug( 100, 'Call OML' ) DO i=its,ite IF (XLAND(I,J).GT.1.5) THEN CALL OML1D(I,J,TML(i,j),T0ML(i,j),HML(i,j),H0ML(i,j), & HUML(i,j),HVML(i,j),TSK(i,j),HFX(i,j), & LH(i,j),GSW(i,j),GLW(i,j),TMOML(i,j), & U_PHY(i,kts,j),V_PHY(i,kts,j),UST(i,j),F(i,j), & EMISS(i,j),STBOLT,G,DELTSM,OML_GAMMA, & ids,ide, jds,jde, kds,kde, & ims,ime, jms,jme, kms,kme, & its,ite, jts,jte, kts,kte ) ENDIF ENDDO ENDDO END SUBROUTINE OCEANML !---------------------------------------------------------------- SUBROUTINE OML1D(I,J,TML,T0ML,H,H0,HUML, & HVML,TSK,HFX, & LH,GSW,GLW,TMOML, & UAIR,VAIR,UST,F,EMISS,STBOLT,G,DT,OML_GAMMA, & ids,ide, jds,jde, kds,kde, & ims,ime, jms,jme, kms,kme, & its,ite, jts,jte, kts,kte ) !---------------------------------------------------------------- IMPLICIT NONE !---------------------------------------------------------------- ! ! SUBROUTINE OCEANML CALCULATES THE SEA SURFACE TEMPERATURE (TSK) ! FROM A SIMPLE OCEAN MIXED LAYER MODEL BASED ON ! (Pollard, Rhines and Thompson (1973). ! !-- TML ocean mixed layer temperature (K) !-- T0ML ocean mixed layer temperature (K) at initial time !-- TMOML top 200 m ocean mean temperature (K) at initial time !-- H ocean mixed layer depth (m) !-- H0 ocean mixed layer depth (m) at initial time !-- HUML ocean mixed layer u component of wind !-- HVML ocean mixed layer v component of wind !-- OML_GAMMA deep water lapse rate (K m-1) !-- OMLCALL whether to call oml model !-- UAIR,VAIR lowest model level wind component !-- UST frictional velocity !-- HFX upward heat flux at the surface (W/m^2) !-- LH latent heat flux at the surface (W/m^2) !-- TSK surface temperature (K) !-- GSW downward short wave flux at ground surface (W/m^2) !-- GLW downward long wave flux at ground surface (W/m^2) !-- EMISS emissivity of the surface !-- STBOLT Stefan-Boltzmann constant (W/m^2/K^4) !-- F Coriolis parameter !-- DT time step (second) !-- G acceleration due to gravity ! !---------------------------------------------------------------- INTEGER, INTENT(IN ) :: I, J INTEGER, INTENT(IN ) :: ids,ide, jds,jde, kds,kde, & ims,ime, jms,jme, kms,kme, & its,ite, jts,jte, kts,kte REAL, INTENT(INOUT) :: TML, H, H0, HUML, HVML, TSK REAL, INTENT(IN ) :: T0ML, HFX, LH, GSW, GLW, & UAIR, VAIR, UST, F, EMISS, TMOML REAL, INTENT(IN) :: STBOLT, G, DT, OML_GAMMA ! Local REAL :: rhoair, rhowater, Gam, alp, BV2, A1, A2, B2, u, v, wspd, & hu1, hv1, hu2, hv2, taux, tauy, tauxair, tauyair, q, hold, & hsqrd, thp, cwater, ust2 CHARACTER(LEN=120) :: time_series hu1=huml hv1=hvml rhoair=1. rhowater=1000. cwater=4200. ! Deep ocean lapse rate (K/m) - from Rich Gam=oml_gamma ! if(i.eq.1 .and. j.eq.1 .or. i.eq.105.and.j.eq.105) print *, 'gamma = ', gam ! Gam=0.14 ! Gam=5.6/40. ! Gam=5./100. ! Thermal expansion coeff (/K) ! alp=.0002 ! temp dependence (/K) alp=max((tml-273.15)*1.e-5, 1.e-6) BV2=alp*g*Gam thp=t0ml-Gam*(h-h0) A1=(tml-thp)*h - 0.5*Gam*h*h if(h.ne.0.)then u=hu1/h v=hv1/h else u=0. v=0. endif ! time step q=(-hfx-lh+gsw+glw-stbolt*emiss*tml*tml*tml*tml)/(rhowater*cwater) ! wspd=max(sqrt(uair*uair+vair*vair),0.1) wspd=sqrt(uair*uair+vair*vair) if (wspd .lt. 1.e-10 ) then ! print *, 'i,j,wspd are ', i,j,wspd wspd = 1.e-10 endif ! limit ust to 1.6 to give a value of ust for water of 0.05 ! ust2=min(ust, 1.6) ! new limit for ust: reduce atmospheric ust by half for ocean ust2=0.5*ust tauxair=ust2*ust2*uair/wspd taux=rhoair/rhowater*tauxair tauyair=ust2*ust2*vair/wspd tauy=rhoair/rhowater*tauyair ! note: forward-backward coriolis force for effective time-centering hu2=hu1+dt*( f*hv1 + taux) hv2=hv1+dt*(-f*hu2 + tauy) ! consider the flux effect A2=A1+q*dt huml=hu2 hvml=hv2 hold=h B2=hu2*hu2+hv2*hv2 hsqrd=-A2/Gam + sqrt(A2*A2/(Gam*Gam) + 2.*B2/BV2) h=sqrt(max(hsqrd,0.0)) ! limit to positive h change if(h.lt.hold)h=hold if(h.ne.0.)then tml=max(t0ml - Gam*(h-h0) + 0.5*Gam*h + A2/h, tmoml) u=hu2/h v=hv2/h else tml=t0ml u=0. v=0. endif tsk=tml ! if(h.gt.100.)print *,i,j,h,tml,' h,tml' ! ww: output point data ! if( (i.eq.190 .and. j.eq.115) .or. (i.eq.170 .and. j.eq.125) ) then ! write(jtime,fmt='("TS ",f10.0)') float(itimestep) ! CALL wrf_message ( TRIM(jtime) ) ! write(time_series,fmt='("OML",2I4,2F9.5,2F8.2,2E15.5,F8.3)') & ! i,j,u,v,tml,h,taux,tauy,a2 ! CALL wrf_message ( TRIM(time_series) ) ! end if END SUBROUTINE OML1D !================================================================ SUBROUTINE omlinit(oml_hml0, tsk, & tml,t0ml,hml,h0ml,huml,hvml,tmoml, & allowed_to_read, start_of_simulation, & ids,ide, jds,jde, kds,kde, & ims,ime, jms,jme, kms,kme, & its,ite, jts,jte, kts,kte ) !---------------------------------------------------------------- IMPLICIT NONE !---------------------------------------------------------------- LOGICAL , INTENT(IN) :: allowed_to_read LOGICAL , INTENT(IN) :: start_of_simulation INTEGER, INTENT(IN ) :: ids,ide, jds,jde, kds,kde, & ims,ime, jms,jme, kms,kme, & its,ite, jts,jte, kts,kte REAL, DIMENSION( ims:ime, jms:jme ) , & INTENT(IN) :: TSK REAL, DIMENSION( ims:ime, jms:jme ) , & INTENT(INOUT) :: TML, T0ML, HML, H0ML, HUML, HVML, TMOML REAL , INTENT(IN ) :: oml_hml0 ! LOCAR VAR INTEGER :: L,J,I,itf,jtf CHARACTER*1024 message !---------------------------------------------------------------- itf=min0(ite,ide-1) jtf=min0(jte,jde-1) IF(start_of_simulation) THEN DO J=jts,jtf DO I=its,itf TML(I,J)=TSK(I,J) T0ML(I,J)=TSK(I,J) ENDDO ENDDO IF (oml_hml0 .gt. 0.) THEN WRITE(message,*)'Initializing OML with HML0 = ', oml_hml0 CALL wrf_debug (0, TRIM(message)) DO J=jts,jtf DO I=its,itf HML(I,J)=oml_hml0 H0ML(I,J)=HML(I,J) HUML(I,J)=0. HVML(I,J)=0. TMOML(I,J)=TSK(I,J)-5. ENDDO ENDDO ELSE WRITE(message,*)'Initializing OML with real HML0, h(1,1) = ', h0ml(1,1) CALL wrf_debug (0, TRIM(message)) DO J=jts,jtf DO I=its,itf HML(I,J)=H0ML(I,J) ! fill in near coast area with SST: 200 K was set as missing value in ocean pre-processing code IF(TMOML(I,J).GT.200. .and. TMOML(I,J).LE.201.) TMOML(I,J)=TSK(I,J) ENDDO ENDDO ENDIF ENDIF END SUBROUTINE omlinit !------------------------------------------------------------------- END MODULE module_sf_oml