MODULE MODULE_SF_MYJSFC
USE MODULE_MODEL_CONSTANTS
USE MODULE_DM, ONLY : WRF_DM_MAXVAL
INTEGER :: ITRMX=5
REAL,PARAMETER :: VKARMAN=0.4
REAL,PARAMETER :: CAPA=R_D/CP,ELOCP=2.72E6/CP,RCAP=1./CAPA
REAL,PARAMETER :: GOCP02=G/CP*2.,GOCP10=G/CP*10.
REAL,PARAMETER :: EPSU2=1.E-6,EPSUST=1.e-9,EPSZT=1.E-28
REAL,PARAMETER :: A2S=17.2693882,A3S=273.16,A4S=35.86
REAL,PARAMETER :: SEAFC=0.98,PQ0SEA=PQ0*SEAFC
REAL,PARAMETER :: BETA=1./273.,EXCML=0.0001,EXCMS=0.0001 &
& ,GLKBR=10.,GLKBS=30.,PI=3.1415926 &
& ,QVISC=2.1E-5,RIC=0.505,SMALL=0.35 &
& ,SQPR=0.84,SQSC=0.84,SQVISC=258.2,TVISC=2.1E-5 &
& ,USTC=0.7,USTR=0.225,VISC=1.5E-5,FH=1.01 &
& ,WWST=1.2,ZTFC=1.,TOPOFAC=9.0e-6
REAL,PARAMETER :: BTG=BETA*G,CZIV=SMALL*GLKBS &
& ,GRRS=GLKBR/GLKBS &
& ,RTVISC=1./TVISC,RVISC=1./VISC &
& ,ZQRZT=SQSC/SQPR &
& ,FZQ1=RTVISC*QVISC*ZQRZT &
& ,FZQ2=RTVISC*QVISC*ZQRZT &
& ,FZT1=RVISC *TVISC*SQPR &
& ,FZT2=CZIV*GRRS*TVISC*SQPR &
& ,FZU1=CZIV*VISC &
& ,PIHF=0.5*PI &
& ,RQVISC=1./QVISC &
& ,USTFC=0.018/G &
& ,WWST2=WWST*WWST
INTEGER, PARAMETER :: KZTM=10001,KZTM2=KZTM-2
REAL :: DZETA1,DZETA2,FH01,FH02,ZTMAX1,ZTMAX2,ZTMIN1,ZTMIN2
REAL,DIMENSION(KZTM) :: PSIH1,PSIH2,PSIM1,PSIM2
CONTAINS
SUBROUTINE MYJSFC(ITIMESTEP,HT,DZ &
& ,PMID,PINT,TH,T,QV,QC,U,V,Q2 &
& ,TSK,QSFC,THZ0,QZ0,UZ0,VZ0 &
& ,LOWLYR,XLAND,IVGTYP,ISURBAN,IZ0TLND &
& ,USTAR,ZNT,Z0BASE,PBLH,MAVAIL,RMOL &
& ,AKHS,AKMS &
& ,RIB &
& ,CHS,CHS2,CQS2,HFX,QFX,FLX_LH,FLHC,FLQC &
& ,QGH,CPM,CT &
& ,U10,V10,T02,TH02,TSHLTR,TH10,Q02,QSHLTR,Q10,PSHLTR &
& ,P1000mb &
& ,IDS,IDE,JDS,JDE,KDS,KDE &
& ,IMS,IME,JMS,JME,KMS,KME &
& ,ITS,ITE,JTS,JTE,KTS,KTE)
IMPLICIT NONE
INTEGER,INTENT(IN) :: IDS,IDE,JDS,JDE,KDS,KDE &
& ,IMS,IME,JMS,JME,KMS,KME &
& ,ITS,ITE,JTS,JTE,KTS,KTE
INTEGER,INTENT(IN) :: ITIMESTEP
INTEGER,DIMENSION(IMS:IME,JMS:JME),INTENT(IN) :: LOWLYR
REAL,DIMENSION(IMS:IME,JMS:JME),INTENT(IN) :: HT,MAVAIL,TSK &
& ,XLAND,Z0BASE
REAL,DIMENSION(IMS:IME,KMS:KME,JMS:JME),INTENT(IN) :: DZ &
& ,PMID,PINT &
& ,Q2,QC,QV &
& ,T,TH &
& ,U,V
INTEGER,DIMENSION(IMS:IME,JMS:JME),INTENT(IN) :: IVGTYP
INTEGER, INTENT(IN) :: ISURBAN
INTEGER, INTENT(IN) :: IZ0TLND
REAL,DIMENSION(IMS:IME,JMS:JME),INTENT(OUT) :: FLX_LH,HFX,PSHLTR &
& ,QFX,Q10,QSHLTR &
& ,TH10,TSHLTR,T02 &
& ,U10,V10,TH02,Q02
REAL,DIMENSION(IMS:IME,JMS:JME),INTENT(INOUT) :: AKHS,AKMS &
& ,PBLH,QSFC
REAL,DIMENSION(IMS:IME,JMS:JME),INTENT(OUT) :: RIB
REAL,DIMENSION(IMS:IME,JMS:JME),INTENT(INOUT) :: QZ0,RMOL,THZ0 &
& ,USTAR,UZ0,VZ0 &
& ,ZNT
REAL,DIMENSION(IMS:IME,JMS:JME),INTENT(OUT) :: CHS,CHS2,CQS2 &
& ,CPM,CT,FLHC,FLQC &
& ,QGH
REAL,INTENT(IN) :: P1000mb
INTEGER :: I,J,K,KFLIP,LMH,LPBL,NTSD
REAL :: A,APESFC,B,BTGX,CWMLOW &
& ,DQDT,DTDIF,DTDT,DUDT,DVDT &
& ,FIS &
& ,P02P,P10P,PLOW,PSFC,PTOP,QLOW,QS02,QS10 &
& ,RAPA,RAPA02,RAPA10,RATIOMX,RDZ,SEAMASK,SM &
& ,T02P,T10P,TEM,TH02P,TH10P,THLOW,THELOW,THM &
& ,TLOW,TZ0,ULOW,VLOW,ZSL
REAL,DIMENSION(KTS:KTE) :: CWMK,PK,Q2K,QK,THEK,THK,TK,UK,VK
REAL,DIMENSION(KTS:KTE-1) :: EL,ELM
REAL,DIMENSION(KTS:KTE+1) :: ZHK
REAL,DIMENSION(ITS:ITE,JTS:JTE) :: THSK
REAL,DIMENSION(ITS:ITE,KTS:KTE+1,JTS:JTE) :: ZINT
DO J=JTS,JTE
DO K=KTS,KTE+1
DO I=ITS,ITE
ZINT(I,K,J)=0.
ENDDO
ENDDO
ENDDO
DO J=JTS,JTE
DO I=ITS,ITE
ZINT(I,KTE+1,J)=HT(I,J)
PBLH(I,J)=-1.
ENDDO
ENDDO
DO J=JTS,JTE
DO K=KTE,KTS,-1
KFLIP=KTE+1-K
DO I=ITS,ITE
ZINT(I,K,J)=ZINT(I,K+1,J)+DZ(I,KFLIP,J)
ENDDO
ENDDO
ENDDO
NTSD=ITIMESTEP
if(NTSD+1.eq.1) then
DO J=JTS,JTE
DO I=ITS,ITE
USTAR(I,J)=0.1
FIS=HT(I,J)*G
SM=XLAND(I,J)-1.
ENDDO
ENDDO
ENDIF
DO J=JTS,JTE
DO I=ITS,ITE
CT(I,J)=0.
ENDDO
ENDDO
setup_integration: DO J=JTS,JTE
DO I=ITS,ITE
LMH=KTE-LOWLYR(I,J)+1
PTOP=PINT(I,KTE+1,J)
PSFC=PINT(I,LOWLYR(I,J),J)
THSK(I,J)=TSK(I,J)/(PSFC/P1000mb)**CAPA
SEAMASK=XLAND(I,J)-1.
DO K=KTE,KTS,-1
KFLIP=KTE+1-K
THK(K)=TH(I,KFLIP,J)
TK(K)=T(I,KFLIP,J)
RATIOMX=QV(I,KFLIP,J)
QK(K)=RATIOMX/(1.+RATIOMX)
PK(K)=PMID(I,KFLIP,J)
CWMK(K)=QC(I,KFLIP,J)
THEK(K)=(CWMK(K)*(-ELOCP/TK(K))+1.)*THK(K)
Q2K(K)=2.*Q2(I,KFLIP,J)
ZHK(K)=ZINT(I,K,J)
ENDDO
ZHK(KTE+1)=HT(I,J)
DO K=KTE,KTS,-1
KFLIP=KTE+1-K
UK(K)=U(I,KFLIP,J)
VK(K)=V(I,KFLIP,J)
ENDDO
LPBL=LMH
DO K=LMH-1,1,-1
IF(Q2K(K)<=EPSQ2*FH) THEN
LPBL=K
GO TO 110
ENDIF
ENDDO
LPBL=1
110 PBLH(I,J)=ZHK(LPBL)-ZHK(LMH+1)
PLOW=PK(LMH)
TLOW=TK(LMH)
THLOW=THK(LMH)
THELOW=THEK(LMH)
QLOW=QK(LMH)
CWMLOW=CWMK(LMH)
ULOW=UK(LMH)
VLOW=VK(LMH)
ZSL=(ZHK(LMH)-ZHK(LMH+1))*0.5
APESFC=(PSFC/P1000mb)**CAPA
if(NTSD+1.eq.1) then
TZ0=TSK(I,J)
else
TZ0=THZ0(I,J)*APESFC
endif
CALL SFCDIF(NTSD,SEAMASK,THSK(I,J),QSFC(I,J),PSFC &
& ,UZ0(I,J),VZ0(I,J),TZ0,TSK(I,J),THZ0(I,J),QZ0(I,J) &
& ,USTAR(I,J),ZNT(I,J),Z0BASE(I,J),CT(I,J),RMOL(I,J) &
& ,AKMS(I,J),AKHS(I,J),RIB(I,J),PBLH(I,J),MAVAIL(I,J) &
& ,IVGTYP(I,J),ISURBAN,IZ0TLND &
& ,CHS(I,J),CHS2(I,J),CQS2(I,J) &
& ,HFX(I,J),QFX(I,J),FLX_LH(I,J) &
& ,FLHC(I,J),FLQC(I,J),QGH(I,J),CPM(I,J) &
& ,ULOW,VLOW,TLOW,THLOW,THELOW,QLOW,CWMLOW &
& ,ZSL,PLOW &
& ,U10(I,J),V10(I,J),TSHLTR(I,J),TH10(I,J) &
& ,QSHLTR(I,J),Q10(I,J),PSHLTR(I,J) &
& ,IDS,IDE,JDS,JDE,KDS,KDE &
& ,IMS,IME,JMS,JME,KMS,KME &
& ,ITS,ITE,JTS,JTE,KTS,KTE,i,j,ZHK(LMH+1))
RAPA=APESFC
TH02P=TSHLTR(I,J)
TH10P=TH10(I,J)
TH02(I,J)=TSHLTR(I,J)
RAPA02=RAPA-GOCP02/TH02P
RAPA10=RAPA-GOCP10/TH10P
T02P=TH02P*RAPA02
T10P=TH10P*RAPA10
T02(I,J) = TH02(I,J)*APESFC
P02P=(RAPA02**RCAP)*P1000mb
P10P=(RAPA10**RCAP)*P1000mb
QS02=PQ0/P02P*EXP(A2*(T02P-A3)/(T02P-A4))
QS10=PQ0/P10P*EXP(A2*(T10P-A3)/(T10P-A4))
IF(QSHLTR(I,J)>QS02)QSHLTR(I,J)=QS02
IF(Q10 (I,J)>QS10)Q10 (I,J)=QS10
Q02(I,J)=QSHLTR(I,J)/(1.-QSHLTR(I,J))
ENDDO
ENDDO setup_integration
END SUBROUTINE MYJSFC
SUBROUTINE SFCDIF(NTSD,SEAMASK,THS,QS,PSFC &
& ,UZ0,VZ0,TZ0,TSK,THZ0,QZ0 &
& ,USTAR,Z0,Z0BASE,CT,RLMO,AKMS,AKHS,RIB,PBLH,WETM &
& ,VEGTYP,ISURBAN,IZ0TLND &
& ,CHS,CHS2,CQS2,HFX,QFX,FLX_LH,FLHC,FLQC,QGH,CPM &
& ,ULOW,VLOW,TLOW,THLOW,THELOW,QLOW,CWMLOW &
& ,ZSL,PLOW &
& ,U10,V10,TH02,TH10,Q02,Q10,PSHLTR &
& ,IDS,IDE,JDS,JDE,KDS,KDE &
& ,IMS,IME,JMS,JME,KMS,KME &
& ,ITS,ITE,JTS,JTE,KTS,KTE,i,j,ZSFC)
IMPLICIT NONE
INTEGER,INTENT(IN) :: IDS,IDE,JDS,JDE,KDS,KDE &
& ,IMS,IME,JMS,JME,KMS,KME &
& ,ITS,ITE,JTS,JTE,KTS,KTE,i,j
INTEGER,INTENT(IN) :: NTSD
REAL,INTENT(IN) :: CWMLOW,PBLH,PLOW,QLOW,PSFC,SEAMASK,ZSFC &
& ,THELOW,THLOW,THS,TSK,TLOW,TZ0,ULOW,VLOW,WETM,ZSL &
& ,Z0BASE
INTEGER, INTENT(IN) :: VEGTYP, ISURBAN, IZ0TLND
REAL,INTENT(OUT) :: CHS,CHS2,CPM,CQS2,CT,FLHC,FLQC,FLX_LH,HFX &
& ,PSHLTR,Q02,Q10,QFX,QGH,RIB,RLMO &
& ,TH02,TH10,U10,V10
REAL,INTENT(INOUT) :: AKHS,AKMS,QZ0,THZ0,USTAR,UZ0,VZ0,Z0,QS
INTEGER :: ITR,K
REAL :: A,B,BTGH,BTGX,CXCHL,CXCHS,CZETMAX,DTHV,DU2,ELFC,FCT &
& ,HLFLX,HSFLX,HV,PSH02,PSH10,PSHZ,PSHZL,PSM10,PSMZ,PSMZL &
& ,RDZ,RDZT,RLMA,RLMN,RLMP &
& ,RLOGT,RLOGU,RWGH,RZ,RZST,RZSU,SIMH,SIMM,TEM,THM &
& ,UMFLX,USTARK,VMFLX,WGHT,WGHTT,WGHTQ,WSTAR2 &
& ,X,XLT,XLT4,XLU,XLU4,XT,XT4,XU,XU4,ZETALT,ZETALU &
& ,ZETAT,ZETAU,ZQ,ZSLT,ZSLU,ZT,ZU,TOPOTERM,ZZIL
REAL :: CZIL,ZILFC
REAL :: AKHS02,AKHS10,AKMS02,AKMS10,EKMS10,QSAT10,QSAT2 &
& ,RLNT02,RLNT10,RLNU10,SIMH02,SIMH10,SIMM10,T02,T10 &
& ,TERM1,RLOW,U10E,V10E,WSTAR,XLT02,XLT024,XLT10 &
& ,XLT104,XLU10,XLU104,XU10,XU104,ZT02,ZT10,ZTAT02,ZTAT10 &
& ,ZTAU,ZTAU10,ZU10,ZUUZ
RDZ=1./ZSL
CXCHL=EXCML*RDZ
CXCHS=EXCMS*RDZ
BTGX=G/THLOW
ELFC=VKARMAN*BTGX
IF(PBLH>1000.)THEN
BTGH=BTGX*PBLH
ELSE
BTGH=BTGX*1000.
ENDIF
IF(SEAMASK>0.5)THEN
DO ITR=1,ITRMX
Z0=MAX(USTFC*USTAR*USTAR,1.59E-5)
IF(USTAR<USTC)THEN
IF(USTAR<USTR)THEN
if(NTSD+1.eq.1) then
AKMS=CXCHS
AKHS=CXCHS
QS=QLOW
ENDIF
ZU=FZU1*SQRT(SQRT(Z0*USTAR*RVISC))/USTAR
WGHT=AKMS*ZU*RVISC
RWGH=WGHT/(WGHT+1.)
UZ0=(ULOW*RWGH+UZ0)*0.5
VZ0=(VLOW*RWGH+VZ0)*0.5
ZT=FZT1*ZU
ZQ=FZQ1*ZT
WGHTT=AKHS*ZT*RTVISC
WGHTQ=AKHS*ZQ*RQVISC
if(NTSD+1>1) then
THZ0=((WGHTT*THLOW+THS)/(WGHTT+1.)+THZ0)*0.5
QZ0=((WGHTQ*QLOW+QS)/(WGHTQ+1.)+QZ0)*0.5
ELSE
THZ0=(WGHTT*THLOW+THS)/(WGHTT+1.)
QZ0=(WGHTQ*QLOW+QS)/(WGHTQ+1.)
ENDIF
ENDIF
IF(USTAR>=USTR.AND.USTAR<USTC)THEN
ZU=Z0
UZ0=0.
VZ0=0.
ZT=FZT2*SQRT(SQRT(Z0*USTAR*RVISC))/USTAR
ZQ=FZQ2*ZT
WGHTT=AKHS*ZT*RTVISC
WGHTQ=AKHS*ZQ*RQVISC
if(NTSD+1>1) then
THZ0=((WGHTT*THLOW+THS)/(WGHTT+1.)+THZ0)*0.5
QZ0=((WGHTQ*QLOW+QS)/(WGHTQ+1.)+QZ0)*0.5
ELSE
THZ0=(WGHTT*THLOW+THS)/(WGHTT+1.)
QZ0=(WGHTQ*QLOW+QS)/(WGHTQ+1.)
ENDIF
ENDIF
ELSE
ZU=Z0
UZ0=0.
VZ0=0.
ZT=Z0
THZ0=THS
ZQ=Z0
QZ0=QS
ENDIF
TEM=(TLOW+TZ0)*0.5
THM=(THELOW+THZ0)*0.5
A=THM*P608
B=(ELOCP/TEM-1.-P608)*THM
DTHV=((THELOW-THZ0)*((QLOW+QZ0+CWMLOW)*(0.5*P608)+1.) &
& +(QLOW-QZ0+CWMLOW)*A+CWMLOW*B)
DU2=MAX((ULOW-UZ0)**2+(VLOW-VZ0)**2,EPSU2)
RIB=BTGX*DTHV*ZSL/DU2
ZSLU=ZSL+ZU
ZSLT=ZSL+ZT
RZSU=ZSLU/ZU
RZST=ZSLT/ZT
RLOGU=LOG(RZSU)
RLOGT=LOG(RZST)
RLMO=ELFC*AKHS*DTHV/USTAR**3
ZETALU=ZSLU*RLMO
ZETALT=ZSLT*RLMO
ZETAU=ZU*RLMO
ZETAT=ZT*RLMO
ZETALU=MIN(MAX(ZETALU,ZTMIN1),ZTMAX1)
ZETALT=MIN(MAX(ZETALT,ZTMIN1),ZTMAX1)
ZETAU=MIN(MAX(ZETAU,ZTMIN1/RZSU),ZTMAX1/RZSU)
ZETAT=MIN(MAX(ZETAT,ZTMIN1/RZST),ZTMAX1/RZST)
RZ=(ZETAU-ZTMIN1)/DZETA1
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSMZ=(PSIM1(K+2)-PSIM1(K+1))*RDZT+PSIM1(K+1)
RZ=(ZETALU-ZTMIN1)/DZETA1
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSMZL=(PSIM1(K+2)-PSIM1(K+1))*RDZT+PSIM1(K+1)
SIMM=PSMZL-PSMZ+RLOGU
RZ=(ZETAT-ZTMIN1)/DZETA1
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSHZ=(PSIH1(K+2)-PSIH1(K+1))*RDZT+PSIH1(K+1)
RZ=(ZETALT-ZTMIN1)/DZETA1
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSHZL=(PSIH1(K+2)-PSIH1(K+1))*RDZT+PSIH1(K+1)
SIMH=(PSHZL-PSHZ+RLOGT)*FH01
USTARK=USTAR*VKARMAN
AKMS=MAX(USTARK/SIMM,CXCHS)
AKHS=MAX(USTARK/SIMH,CXCHS)
IF(DTHV<=0.)THEN
WSTAR2=WWST2*ABS(BTGH*AKHS*DTHV)**(2./3.)
ELSE
WSTAR2=0.
ENDIF
USTAR=MAX(SQRT(AKMS*SQRT(DU2+WSTAR2)),EPSUST)
ENDDO
ELSE
IF(NTSD==1)THEN
QS=QLOW
ENDIF
ZU=Z0
UZ0=0.
VZ0=0.
ZT=ZU*ZTFC
THZ0=THS
ZQ=ZT
QZ0=QS
TEM=(TLOW+TZ0)*0.5
THM=(THELOW+THZ0)*0.5
A=THM*P608
B=(ELOCP/TEM-1.-P608)*THM
DTHV=((THELOW-THZ0)*((QLOW+QZ0+CWMLOW)*(0.5*P608)+1.) &
& +(QLOW-QZ0+CWMLOW)*A+CWMLOW*B)
DU2=MAX((ULOW-UZ0)**2+(VLOW-VZ0)**2,EPSU2)
RIB=BTGX*DTHV*ZSL/DU2
ZSLU=ZSL+ZU
RZSU=ZSLU/ZU
RLOGU=LOG(RZSU)
ZSLT=ZSL+ZU
CZIL=0.1
ZILFC=-CZIL*VKARMAN*SQVISC
CZETMAX = 10.
IF(DTHV>0.)THEN
IF (RIB<RIC) THEN
ZZIL=ZILFC*(1.0+(RIB/RIC)*(RIB/RIC)*CZETMAX)
ELSE
ZZIL=ZILFC*(1.0+CZETMAX)
ENDIF
ELSE
ZZIL=ZILFC
ENDIF
land_point_iteration: DO ITR=1,ITRMX
ZT=MAX(EXP(ZZIL*SQRT(USTAR*Z0BASE))*Z0BASE,EPSZT)
RZST=ZSLT/ZT
RLOGT=LOG(RZST)
RLMO=ELFC*AKHS*DTHV/USTAR**3
ZETALU=ZSLU*RLMO
ZETALT=ZSLT*RLMO
ZETAU=ZU*RLMO
ZETAT=ZT*RLMO
ZETALU=MIN(MAX(ZETALU,ZTMIN2),ZTMAX2)
ZETALT=MIN(MAX(ZETALT,ZTMIN2),ZTMAX2)
ZETAU=MIN(MAX(ZETAU,ZTMIN2/RZSU),ZTMAX2/RZSU)
ZETAT=MIN(MAX(ZETAT,ZTMIN2/RZST),ZTMAX2/RZST)
RZ=(ZETAU-ZTMIN2)/DZETA2
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSMZ=(PSIM2(K+2)-PSIM2(K+1))*RDZT+PSIM2(K+1)
RZ=(ZETALU-ZTMIN2)/DZETA2
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSMZL=(PSIM2(K+2)-PSIM2(K+1))*RDZT+PSIM2(K+1)
SIMM=PSMZL-PSMZ+RLOGU
RZ=(ZETAT-ZTMIN2)/DZETA2
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSHZ=(PSIH2(K+2)-PSIH2(K+1))*RDZT+PSIH2(K+1)
RZ=(ZETALT-ZTMIN2)/DZETA2
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSHZL=(PSIH2(K+2)-PSIH2(K+1))*RDZT+PSIH2(K+1)
SIMH=(PSHZL-PSHZ+RLOGT)*FH02
USTARK=USTAR*VKARMAN
AKMS=MAX(USTARK/SIMM,CXCHL)
AKHS=MAX(USTARK/SIMH,CXCHL)
IF(DTHV<=0.)THEN
WSTAR2=WWST2*ABS(BTGH*AKHS*DTHV)**(2./3.)
ELSE
WSTAR2=0.
ENDIF
USTAR=MAX(SQRT(AKMS*SQRT(DU2+WSTAR2)),EPSUST)
ENDDO land_point_iteration
ENDIF
CT=0.
WSTAR=SQRT(WSTAR2)/WWST
UMFLX=AKMS*(ULOW -UZ0 )
VMFLX=AKMS*(VLOW -VZ0 )
HSFLX=AKHS*(THLOW-THZ0)
HLFLX=AKHS*(QLOW -QZ0 )
ZU10=ZU+10.
ZT02=ZT+02.
ZT10=ZT+10.
RLNU10=LOG(ZU10/ZU)
RLNT02=LOG(ZT02/ZT)
RLNT10=LOG(ZT10/ZT)
ZTAU10=ZU10*RLMO
ZTAT02=ZT02*RLMO
ZTAT10=ZT10*RLMO
IF(SEAMASK>0.5)THEN
ZTAU10=MIN(MAX(ZTAU10,ZTMIN1),ZTMAX1)
ZTAT02=MIN(MAX(ZTAT02,ZTMIN1),ZTMAX1)
ZTAT10=MIN(MAX(ZTAT10,ZTMIN1),ZTMAX1)
RZ=(ZTAU10-ZTMIN1)/DZETA1
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSM10=(PSIM1(K+2)-PSIM1(K+1))*RDZT+PSIM1(K+1)
SIMM10=PSM10-PSMZ+RLNU10
RZ=(ZTAT02-ZTMIN1)/DZETA1
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSH02=(PSIH1(K+2)-PSIH1(K+1))*RDZT+PSIH1(K+1)
SIMH02=(PSH02-PSHZ+RLNT02)*FH01
RZ=(ZTAT10-ZTMIN1)/DZETA1
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSH10=(PSIH1(K+2)-PSIH1(K+1))*RDZT+PSIH1(K+1)
SIMH10=(PSH10-PSHZ+RLNT10)*FH01
AKMS10=MAX(USTARK/SIMM10,CXCHS)
AKHS02=MAX(USTARK/SIMH02,CXCHS)
AKHS10=MAX(USTARK/SIMH10,CXCHS)
ELSE
ZTAU10=MIN(MAX(ZTAU10,ZTMIN2),ZTMAX2)
ZTAT02=MIN(MAX(ZTAT02,ZTMIN2),ZTMAX2)
ZTAT10=MIN(MAX(ZTAT10,ZTMIN2),ZTMAX2)
RZ=(ZTAU10-ZTMIN2)/DZETA2
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSM10=(PSIM2(K+2)-PSIM2(K+1))*RDZT+PSIM2(K+1)
SIMM10=PSM10-PSMZ+RLNU10
RZ=(ZTAT02-ZTMIN2)/DZETA2
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSH02=(PSIH2(K+2)-PSIH2(K+1))*RDZT+PSIH2(K+1)
SIMH02=(PSH02-PSHZ+RLNT02)*FH02
RZ=(ZTAT10-ZTMIN2)/DZETA2
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSH10=(PSIH2(K+2)-PSIH2(K+1))*RDZT+PSIH2(K+1)
SIMH10=(PSH10-PSHZ+RLNT10)*FH02
AKMS10=MAX(USTARK/SIMM10,CXCHL)
AKHS02=MAX(USTARK/SIMH02,CXCHL)
AKHS10=MAX(USTARK/SIMH10,CXCHL)
ENDIF
U10 =UMFLX/AKMS10+UZ0
V10 =VMFLX/AKMS10+VZ0
TH02=HSFLX/AKHS02+THZ0
IF(THLOW>THZ0.AND.(TH02<THZ0.OR.TH02>THLOW).OR. &
THLOW<THZ0.AND.(TH02>THZ0.OR.TH02<THLOW))THEN
TH02=THZ0+2.*RDZ*(THLOW-THZ0)
ENDIF
TH10=HSFLX/AKHS10+THZ0
IF(THLOW>THZ0.AND.(TH10<THZ0.OR.TH10>THLOW).OR. &
THLOW<THZ0.AND.(TH10>THZ0.OR.TH10<THLOW))THEN
TH10=THZ0+10.*RDZ*(THLOW-THZ0)
ENDIF
Q02 =HLFLX/AKHS02+QZ0
Q10 =HLFLX/AKHS10+QZ0
TERM1=-0.068283/TLOW
PSHLTR=PSFC*EXP(TERM1)
U10E=U10
V10E=V10
IF(SEAMASK<0.5)THEN
ZUUZ=AMIN1(ZU*0.50,0.18)
ZU=AMAX1(ZU*0.35,ZUUZ)
ZU10=ZU+10.
RZSU=ZU10/ZU
RLNU10=LOG(RZSU)
ZETAU=ZU*RLMO
ZTAU10=ZU10*RLMO
ZTAU10=MIN(MAX(ZTAU10,ZTMIN2),ZTMAX2)
ZETAU=MIN(MAX(ZETAU,ZTMIN2/RZSU),ZTMAX2/RZSU)
RZ=(ZTAU10-ZTMIN2)/DZETA2
K=INT(RZ)
RDZT=RZ-REAL(K)
K=MIN(K,KZTM2)
K=MAX(K,0)
PSM10=(PSIM2(K+2)-PSIM2(K+1))*RDZT+PSIM2(K+1)
SIMM10=PSM10-PSMZ+RLNU10
EKMS10=MAX(USTARK/SIMM10,CXCHL)
U10E=UMFLX/EKMS10+UZ0
V10E=VMFLX/EKMS10+VZ0
ENDIF
U10=U10E
V10=V10E
RLOW=PLOW/(R_D*TLOW)
CHS=AKHS
CHS2=AKHS02
CQS2=AKHS02
HFX=-RLOW*CP*HSFLX
QFX=-RLOW*HLFLX*WETM
FLX_LH=XLV*QFX
FLHC=RLOW*CP*AKHS
FLQC=RLOW*AKHS*WETM
QGH=((1.-SEAMASK)*PQ0+SEAMASK*PQ0SEA) &
& /PLOW*EXP(A2S*(TLOW-A3S)/(TLOW-A4S))
QGH=QGH/(1.-QGH)
CPM=CP*(1.+0.8*QLOW)
IF(SEAMASK>0.5)THEN
QS=PQ0SEA/PSFC &
& *EXP(A2S*(TSK-A3S)/(TSK-A4S))
QS=QS/(1.-QS)
ENDIF
END SUBROUTINE SFCDIF
SUBROUTINE MYJSFCINIT(LOWLYR,USTAR,Z0 &
& ,SEAMASK,XICE,IVGTYP,RESTART &
& ,ALLOWED_TO_READ &
& ,IDS,IDE,JDS,JDE,KDS,KDE &
& ,IMS,IME,JMS,JME,KMS,KME &
& ,ITS,ITE,JTS,JTE,KTS,KTE)
IMPLICIT NONE
LOGICAL,INTENT(IN) :: RESTART,ALLOWED_TO_READ
INTEGER,INTENT(IN) :: IDS,IDE,JDS,JDE,KDS,KDE &
& ,IMS,IME,JMS,JME,KMS,KME &
& ,ITS,ITE,JTS,JTE,KTS,KTE
INTEGER,DIMENSION(IMS:IME,JMS:JME),INTENT(IN) :: IVGTYP
INTEGER,DIMENSION(IMS:IME,JMS:JME),INTENT(INOUT) :: LOWLYR
REAL,DIMENSION(IMS:IME,JMS:JME),INTENT(IN) :: SEAMASK,XICE
REAL,DIMENSION(IMS:IME,JMS:JME),INTENT(INOUT) :: USTAR,Z0
REAL,DIMENSION(0:30) :: VZ0TBL
REAL,DIMENSION(0:30) :: VZ0TBL_24
INTEGER :: I,IDUM,IRECV,J,JDUM,K,ITF,JTF,KTF,MAXGBL_IVGTYP &
&, MAXLOC_IVGTYP,MPI_COMM_COMP
REAL :: SM,X,ZETA1,ZETA2,ZRNG1,ZRNG2
REAL :: PIHF=3.1415926/2.,EPS=1.E-6
VZ0TBL= &
& (/0., &
& 2.653,0.826,0.563,1.089,0.854,0.856,0.035,0.238,0.065,0.076 &
& ,0.011,0.035,0.011,0.000,0.000,0.000,0.000,0.000,0.000,0.000 &
& ,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000,0.000/)
VZ0TBL_24= (/0., &
& 1.00, 0.07, 0.07, 0.07, 0.07, 0.15, &
& 0.08, 0.03, 0.05, 0.86, 0.80, 0.85, &
& 2.65, 1.09, 0.80, 0.001, 0.04, 0.05, &
& 0.01, 0.04, 0.06, 0.05, 0.03, 0.001, &
& 0.000, 0.000, 0.000, 0.000, 0.000, 0.000 /)
JTF=MIN0(JTE,JDE-1)
KTF=MIN0(KTE,KDE-1)
ITF=MIN0(ITE,IDE-1)
DO J=JTS,JTF
DO I=ITS,ITF
LOWLYR(I,J)=1
ENDDO
ENDDO
IF(.NOT.RESTART)THEN
MAXGBL_IVGTYP=MAXVAL(IVGTYP)
CALL WRF_DM_MAXVAL(MAXGBL_IVGTYP,IDUM,JDUM)
IF (MAXGBL_IVGTYP<13) THEN
DO J=JTS,JTE
DO I=ITS,ITE
SM=SEAMASK(I,J)-1.
IF(SM+XICE(I,J)<0.5)THEN
Z0(I,J)=VZ0TBL(IVGTYP(I,J))
ENDIF
ENDDO
ENDDO
ELSE
DO J=JTS,JTE
DO I=ITS,ITE
SM=SEAMASK(I,J)-1.
IF(SM+XICE(I,J)<0.5)THEN
Z0(I,J)=VZ0TBL_24(IVGTYP(I,J))
ENDIF
ENDDO
ENDDO
ENDIF
ENDIF
IF(.NOT.RESTART)THEN
DO J=JTS,JTE
DO I=ITS,ITF
USTAR(I,J)=0.1
ENDDO
ENDDO
ENDIF
FH01=1.
FH02=1.
ZTMIN1=-5.0
ZTMAX1=1.0
ZTMIN2=-5.0
ZTMAX2=1.0
ZRNG1=ZTMAX1-ZTMIN1
ZRNG2=ZTMAX2-ZTMIN2
DZETA1=ZRNG1/(KZTM-1)
DZETA2=ZRNG2/(KZTM-1)
ZETA1=ZTMIN1
ZETA2=ZTMIN2
DO K=1,KZTM
IF(ZETA1<0.)THEN
X=SQRT(SQRT(1.-16.*ZETA1))
PSIM1(K)=-2.*LOG((X+1.)/2.)-LOG((X*X+1.)/2.)+2.*ATAN(X)-PIHF
PSIH1(K)=-2.*LOG((X*X+1.)/2.)
ELSE
PSIM1(K)=0.7*ZETA1+0.75*ZETA1*(6.-0.35*ZETA1)*EXP(-0.35*ZETA1)
PSIH1(K)=0.7*ZETA1+0.75*ZETA1*(6.-0.35*ZETA1)*EXP(-0.35*ZETA1)
ENDIF
IF(ZETA2<0.)THEN
X=SQRT(SQRT(1.-16.*ZETA2))
PSIM2(K)=-2.*LOG((X+1.)/2.)-LOG((X*X+1.)/2.)+2.*ATAN(X)-PIHF
PSIH2(K)=-2.*LOG((X*X+1.)/2.)
ELSE
PSIM2(K)=0.7*ZETA2+0.75*ZETA2*(6.-0.35*ZETA2)*EXP(-0.35*ZETA2)
PSIH2(K)=0.7*ZETA2+0.75*ZETA2*(6.-0.35*ZETA2)*EXP(-0.35*ZETA2)
ENDIF
IF(K==KZTM)THEN
ZTMAX1=ZETA1
ZTMAX2=ZETA2
ENDIF
ZETA1=ZETA1+DZETA1
ZETA2=ZETA2+DZETA2
ENDDO
ZTMAX1=ZTMAX1-EPS
ZTMAX2=ZTMAX2-EPS
END SUBROUTINE MYJSFCINIT
END MODULE MODULE_SF_MYJSFC