!-------------------------------------- LICENCE BEGIN ------------------------------------
!Environment Canada - Atmospheric Science and Technology License/Disclaimer,
! version 3; Last Modified: May 7, 2008.
!This is free but copyrighted software; you can use/redistribute/modify it under the terms
!of the Environment Canada - Atmospheric Science and Technology License/Disclaimer
!version 3 or (at your option) any later version that should be found at:
!http://collaboration.cmc.ec.gc.ca/science/rpn.comm/license.html
!
!This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
!without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
!See the above mentioned License/Disclaimer for more details.
!You should have received a copy of the License/Disclaimer along with this software;
!if not, you can write to: EC-RPN COMM Group, 2121 TransCanada, suite 500, Dorval (Quebec),
!CANADA, H9P 1J3; or send e-mail to service.rpn@ec.gc.ca
!-------------------------------------- LICENCE END --------------------------------------
!
SUBROUTINE AIRSQC ( airs_end, airs_bunch,airs_loop_done ) 1,12
#if defined (DOC)
!***********************************************************************
!
!**ID AIRSQC -- QUALITY CONTROL OF AIRS OBSERVATIONS
!
! SCIENCE: L. GARAND
! AUTHOR: A. BEAULNE (CMDA/SMC) August 2004
! A. BEAULNE (CMDA/SMC) June 2006 (ADAPT TO 3DVAR)
!
! REVISION:
!
! OBJECT: ASSIGN ASSIMILATION FLAGS TO OBSERVATIONS
!
! ARGUMENTS:
! INPUT:
! -AIRS_BUNCH : MAXIMUM NUMBER OF PROFILES FOR ONE CALL
! -AIRS_LOOP_DONE : NUMBER OF PREVIOUS CALLS TO AIRSQC
!
! OUTPUT:
! -AIRS_END : AT THE END OF THIS CALL TO AIRSQC, DO ALL AIRS
! PROFILES BEEN TREATED (true) OR NOT (false)
!
!
!***********************************************************************
#endif
use mod_tovs
use airsch
use airsbgcheck
IMPLICIT NONE
!implicits
#include "pardim.cdk"
#include "comdimo.cdk"
#include "comlun.cdk"
#include "comcst.cdk"
#include "comoabdy.cdk"
#include "comoahdr.cdk"
#include "comoba.cdk"
#include "commvohr.cdk"
#include "partov.cdk"
#include "comtov.cdk"
#include "cvcord.cdk"
#include "comdim.cdk"
#include "comgem.cdk"
INTEGER :: JC,NCHN,JCH,JF,JL,NLEV,JN,NPRF,JO,NFLG,ICHN
INTEGER :: IWINDO,IWINDO_ALT,KRTID,IPRO,NOBAIRS
INTEGER :: JDATA,IDATA,IDATEND,IDAIRS
INTEGER :: IBEGIN,ILAST,IBEGINOB,ILASTOB,IDATYP
INTEGER :: DIFFTOP_MIN,IMODTOP
INTEGER :: airs_loop_done,count_airs,airs_bunch
REAL(8) :: T_EFFECTIVE
LOGICAL :: airs_end
integer :: alloc_status(61)
real(8), allocatable :: ZTG(:),ZPS(:),ZTS(:),ZT(:,:),ZHT(:,:),ZLQ(:,:),ZPRES(:,:)
real(8), allocatable :: BTOBSERR(:),BTOBS(:,:),BTCALC(:,:),RCAL_CLR(:,:),SFCTAU(:,:)
real(8), allocatable :: ROBS(:,:),RCLD(:,:,:),TRANSM(:,:,:),EMI_SFC(:,:)
real(8), allocatable :: CLFR(:),TOEXT(:,:),ZHOEXT(:,:),SUNZA(:)
real, allocatable :: ALBEDO(:),ICE(:),PCNT_WAT(:),PCNT_REG(:)
integer, allocatable :: KSURF(:),LTYPE(:)
integer, allocatable :: CLDFLAG(:),REJFLAG(:,:,:),LEV_START(:),ILIST(:),ILIST_PAIR(:)
integer, allocatable :: CORFLAG(:,:)
integer, allocatable :: GNCLDFLAG(:)
integer, allocatable :: ICHREF(:)
integer, allocatable :: NTOP_EQ(:),NTOP_BT(:,:),NTOP_RD(:,:),NTOP_MB(:)
integer, allocatable :: NTOP_CO2(:,:),NGOOD(:)
real(8), allocatable :: PTOP_EQ(:),PTOP_BT(:,:),PTOP_RD(:,:),PTOP_MB(:)
real(8), allocatable :: PTOP_CO2(:,:),FCLOUD_CO2(:,:),HE(:)
real(8), allocatable :: ETOP(:),VTOP(:),ECF(:),VCF(:)
integer, allocatable :: MINP(:,:),FATE(:,:)
real(8), allocatable :: PMIN(:,:),DTAUDP1(:,:),TAMPON(:),MAXWF(:,:),CFSUB(:)
logical, allocatable :: ASSIM_ALL(:)
integer :: cpt
SAVE :: IMODTOP
! ** find sensor number corresponding to AIRS
DO KRTID = 1, NSENSORS
IF ( PLATFORM(KRTID) .EQ. 9 .AND. &
& SATELLITE(KRTID) .EQ. 2 .AND. &
& INSTRUMENT(KRTID) .EQ. 11 ) THEN
IDAIRS = KRTID
EXIT
END IF
END DO
! ** find number of AIRS profiles (for memory allocation)
NPRF = 0
count_airs = 0
DO JF = 1, NFILES
IF ( CFAMTYP(JF) .EQ. 'TO' .AND. NBEGINTYP(JF) .GT. 0 ) THEN
IBEGIN = NBEGINTYP(JF)
ILAST = NENDTYP(JF)
IBEGINOB = MOBDATA(NCMOBS,IBEGIN)
ILASTOB = MOBDATA(NCMOBS,ILAST)
DO JO = IBEGINOB, ILASTOB
IDATYP = MOD(MOBHDR(NCMITY,JO),1000)
IF ( IDATYP .EQ. 183) THEN
count_airs = count_airs + 1
IF ( count_airs > airs_loop_done * airs_bunch .AND. &
& count_airs <= (airs_loop_done+1) * airs_bunch ) NPRF = NPRF + 1
END IF
END DO
END IF
END DO
! ** find number of AIRS channels and RTTOV levels
NCHN = coef(idairs)%fmv_chn
NLEV = coef(idairs)%nlevels
write(nulout,*) ' AIRSQC - nchn ', nchn
! information to extract (transvidage)
! ------------------------------------
!
! ZTG(NPRF) -- guess skin temperatures (deg K)
! ZPS(NPRF) -- surface pressure (hPa)
! ZT(NLEVTRL,NPRF) -- temperature profiles on NWP model levels (deg K)
! ZHT(NLEVTRL,NPRF) -- height profiles on NWP model levels (m)
! ZPRES(NLEVTRL,NPRF) -- NWP pressure levels
! ZLQ(NLEVTRL,NPRF) -- surface specific humidity in ln q (kg/kg)
! BTOBSERR(AIRSSNCH) -- observation error standard deviation
! BTOBS(AIRSSNCH,NPRF) -- observed brightness temperatures (deg K)
! BTCALC(AIRSSNCH,NPRF) -- computed brightness temperatures (deg K)
! RCAL_CLR(AIRSSNCH,NPRF) -- computed clear radiances (mw/m2/sr/cm-1)
! SFCTAU(AIRSSNCH,NPRF) -- surface to space transmittances (0-1)
! RCLD(AIRSSNCH,NPRF,NLEV) -- overcast cloudy radiances (mw/m2/sr/cm-1)
! TRANSM(AIRSSNCH,NPRF,NLEV) -- layer to space transmittances (0-1)
! EMI_SFC(AIRSSNCH,NPRF) -- surface emissivities (0-1)
! KSURF(NPRF) -- surface type in obs file (0, 1)
! CLFR(NPRF) -- cloud fraction (%)
! TOEXT(NLEV,NPRF) -- temperature profiles on RT model levels (deg K)
! ZHOEXT(NLEV,NPRF) -- height profiles on RT model levels (m)
! SUNZA(NPRF) -- sun zenith angle (deg)
! ALBEDO(NPRF) -- surface albedo (0-1)
! ICE(NPRF) -- ice fraction (0-1)
! LTYPE(NPRF) -- surface type (1,...,20)
! PCNT_WAT(NPRF) -- water fraction (0-1)
! PCNT_REG(NPRF) -- water fraction in the area (0-1)
! ROBS(AIRSSNCH,NPRF) -- observed radiances (mW/m2/sr/cm-1)
alloc_status(:) = 0
allocate ( ZTG(NPRF), stat= alloc_status(1) )
allocate ( ZPS(NPRF), stat= alloc_status(2) )
allocate ( ZT(NLEVTRL,NPRF), stat= alloc_status(3) )
allocate ( ZHT(NLEVTRL,NPRF), stat= alloc_status(4) )
allocate ( ZLQ(NLEVTRL,NPRF), stat= alloc_status(5) )
allocate ( BTOBSERR(AIRSSNCH), stat= alloc_status(6) )
allocate ( BTOBS(AIRSSNCH,NPRF), stat= alloc_status(7) )
allocate ( BTCALC(AIRSSNCH,NPRF), stat= alloc_status(8) )
allocate ( RCAL_CLR(AIRSSNCH,NPRF), stat= alloc_status(9) )
allocate ( SFCTAU(AIRSSNCH,NPRF), stat= alloc_status(10))
allocate ( RCLD(AIRSSNCH,NPRF,NLEV), stat= alloc_status(11))
allocate ( TRANSM(AIRSSNCH,NPRF,NLEV), stat= alloc_status(12))
allocate ( EMI_SFC(AIRSSNCH,NPRF), stat= alloc_status(13))
allocate ( KSURF(NPRF), stat= alloc_status(14))
allocate ( CLFR(NPRF), stat= alloc_status(15))
allocate ( TOEXT(NLEV,NPRF), stat= alloc_status(16))
allocate ( ZHOEXT(NLEV,NPRF), stat= alloc_status(17))
allocate ( SUNZA(NPRF), stat= alloc_status(18))
allocate ( ALBEDO(NPRF), stat= alloc_status(19))
allocate ( ICE(NPRF), stat= alloc_status(20))
allocate ( LTYPE(NPRF), stat= alloc_status(21))
allocate ( PCNT_WAT(NPRF), stat= alloc_status(22))
allocate ( PCNT_REG(NPRF), stat= alloc_status(23))
allocate ( ROBS(AIRSSNCH,NPRF), stat= alloc_status(24))
allocate ( ZTS(NPRF), stat= alloc_status(26))
allocate ( CLDFLAG(NPRF), stat= alloc_status(27))
allocate ( REJFLAG(AIRSSNCH,NPRF,0:BITFLAG),stat= alloc_status(28))
allocate ( LEV_START(NPRF), stat= alloc_status(29))
allocate ( ILIST(AIRSSNCH), stat= alloc_status(30))
allocate ( NTOP_EQ(NPRF), stat= alloc_status(31))
allocate ( NTOP_BT(AIRSSNCH,NPRF), stat= alloc_status(32))
allocate ( NTOP_RD(AIRSSNCH,NPRF), stat= alloc_status(33))
allocate ( NTOP_CO2(NCO2,NPRF), stat= alloc_status(34))
allocate ( PTOP_EQ(NPRF), stat= alloc_status(35))
allocate ( PTOP_BT(AIRSSNCH,NPRF), stat= alloc_status(36))
allocate ( PTOP_RD(AIRSSNCH,NPRF), stat= alloc_status(37))
allocate ( PTOP_CO2(NCO2,NPRF), stat= alloc_status(38))
allocate ( FCLOUD_CO2(NCO2,NPRF), stat= alloc_status(39))
allocate ( HE(NPRF), stat= alloc_status(40))
allocate ( ETOP(NPRF), stat= alloc_status(41))
allocate ( VTOP(NPRF), stat= alloc_status(42))
allocate ( ECF(NPRF), stat= alloc_status(43))
allocate ( VCF(NPRF), stat= alloc_status(44))
allocate ( NGOOD(NPRF), stat= alloc_status(45))
allocate ( MINP(AIRSSNCH,NPRF), stat= alloc_status(46))
allocate ( PMIN(AIRSSNCH,NPRF), stat= alloc_status(47))
allocate ( DTAUDP1(AIRSSNCH,NPRF), stat= alloc_status(48))
allocate ( TAMPON(NPRF), stat= alloc_status(49))
allocate ( FATE(AIRSSNCH,NPRF), stat= alloc_status(50))
allocate ( ICHREF(NPRF), stat= alloc_status(51))
allocate ( ASSIM_ALL(NPRF), stat= alloc_status(53))
allocate ( MAXWF(AIRSSNCH,NPRF), stat= alloc_status(54))
allocate ( ZPRES(NLEVTRL,NPRF), stat= alloc_status(55))
allocate ( PTOP_MB(NPRF), stat= alloc_status(56))
allocate ( NTOP_MB(NPRF), stat= alloc_status(57))
allocate ( CFSUB(NPRF), stat= alloc_status(58))
allocate ( GNCLDFLAG(NPRF), stat= alloc_status(59))
allocate ( ILIST_PAIR(AIRSSNCH), stat= alloc_status(60))
allocate ( CORFLAG(AIRSSNCH,NPRF), stat= alloc_status(61))
if( any(alloc_status /= 0) ) then
write(nulout,*) ' airsqc : memory allocation error'
call abort3d(nulout,'airsqc ')
end if
BTOBS(:,:) = -1.
BTCALC(:,:) = -1.
RCAL_CLR(:,:) = -1.
SFCTAU(:,:) = -1.
RCLD(:,:,:) = -1.
TRANSM(:,:,:) = -1.
EMI_SFC(:,:) = -1.
REJFLAG(:,:,:) = 0
CORFLAG(:,:) = 0
NOBAIRS = 0
NOBTOV = 0
count_airs = 0
DO JF = 1, NFILES
IF ( CFAMTYP(JF) .EQ. 'TO' .AND. NBEGINTYP(JF) .GT. 0 ) THEN
IBEGIN = NBEGINTYP(JF)
ILAST = NENDTYP(JF)
IBEGINOB = MOBDATA(NCMOBS,IBEGIN)
ILASTOB = MOBDATA(NCMOBS,ILAST)
DO JO = IBEGINOB, ILASTOB
IDATYP = MOD(MOBHDR(NCMITY,JO),1000)
IF ( IDATYP .EQ. 164 .OR. &
& IDATYP .EQ. 168 .OR. &
& IDATYP .EQ. 180 .OR. &
& IDATYP .EQ. 181 .OR. &
& IDATYP .EQ. 182 .OR. &
& IDATYP .EQ. 183 ) NOBTOV = NOBTOV + 1
IF ( IDATYP .EQ. 183) THEN
count_airs = count_airs + 1
IF ( count_airs > airs_loop_done * airs_bunch .AND. &
& count_airs <= (airs_loop_done+1) * airs_bunch ) THEN
NOBAIRS = NOBAIRS + 1
ZTG(NOBAIRS) = GOMTGRHR(1,JO)
ZPS(NOBAIRS) = GOMPSHR(1,JO)*RPATMB
DO JL = 1, NLEVTRL
ZT(JL,NOBAIRS) = GOMTHR(JL,JO)
ZHT(JL,NOBAIRS) = GOMGZHR(JL,JO) / RG
ZLQ(JL,NOBAIRS) = GOMQHR(JL,JO)
ZPRES(JL,NOBAIRS)= RPPOBSHR(JL,JO) * RPATMB
END DO
IDATA = MOBHDR(NCMRLN,JO)
IDATEND = MOBHDR(NCMNLV,JO) + IDATA - 1
DO JDATA= IDATA, IDATEND
IF ( MOBDATA(NCMASS,JDATA).EQ.1 ) THEN
ICHN = NINT(ROBDATA8(NCMPPP,JDATA))
ICHN = MAX(0,MIN(ICHN,JPCH+1))
BTOBSERR(AIRSSCH(ICHN)) = ROBDATA8(NCMOER,JDATA)
BTOBS(AIRSSCH(ICHN),NOBAIRS) = ROBDATA8(NCMVAR,JDATA)
! *** Flag check on observed BTs ***
IF (BTEST(MOBDATA(NCMFLG,JDATA),2)) REJFLAG(AIRSSCH(ICHN),NOBAIRS,9) = 1
! *** Set if data has been bias corrected (bit 6 set) ***
IF (BTEST(MOBDATA(NCMFLG,JDATA),6)) CORFLAG(AIRSSCH(ICHN),NOBAIRS) = 1
! *** Gross check on observed BTs ***
IF (BTOBS(AIRSSCH(ICHN),NOBAIRS)<150.) REJFLAG(AIRSSCH(ICHN),NOBAIRS,9) = 1
IF (BTOBS(AIRSSCH(ICHN),NOBAIRS)>350.) REJFLAG(AIRSSCH(ICHN),NOBAIRS,9) = 1
END IF
END DO
DO JC = 1, NCHN
ICHN = ichan(JC,IDAIRS)
BTCALC(AIRSSCH(ICHN),NOBAIRS) = radiance_d(nobtov)%out(jc)
RCAL_CLR(AIRSSCH(ICHN),NOBAIRS) = radiance_d(nobtov)%clear_out(jc)
SFCTAU(AIRSSCH(ICHN),NOBAIRS) = transmission_d(nobtov)%tau_surf(jc)
DO JL = 1, NLEV
RCLD(AIRSSCH(ICHN),NOBAIRS,JL) = radiance_d(nobtov)%overcast(jl,jc)
TRANSM(AIRSSCH(ICHN),NOBAIRS,JL) = transmission_d(nobtov)%tau_layer(jl,jc)
END DO
EMI_SFC(AIRSSCH(ICHN),NOBAIRS) = emissivity(JC,NOBTOV)
! *** Gross check on computed BTs ***
IF (BTCALC(AIRSSCH(ICHN),NOBAIRS)<150.) REJFLAG(AIRSSCH(ICHN),NOBAIRS,9) = 1
IF (BTCALC(AIRSSCH(ICHN),NOBAIRS)>350.) REJFLAG(AIRSSCH(ICHN),NOBAIRS,9) = 1
END DO
KSURF(NOBAIRS) = profiles(nobtov)%skin%surftype
!Test pour detecter le isatzen manquant ou anormal pour AIRS
if ( mobhdr(ncmbox,jo)/10000 > 16500) then
DO JC = 1, NCHN
ICHN = ichan(JC,IDAIRS)
REJFLAG(AIRSSCH(ICHN),NOBAIRS,9) = 1
ENDDO
endif
!**************************************************************
CLFR(NOBAIRS) = profiles_qc(nobtov)%clfr
DO JL = 1, NLEV
TOEXT(JL,NOBAIRS) = profiles(nobtov)%t(jl)
ZHOEXT(JL,NOBAIRS) = profiles_qc(nobtov)%z(jl)
END DO
SUNZA(NOBAIRS) = profiles_qc(nobtov)%sunza
ALBEDO(NOBAIRS) = profiles_qc(nobtov)%albedo
ICE(NOBAIRS) = profiles_qc(nobtov)%ice
LTYPE(NOBAIRS) = profiles_qc(nobtov)%ltype
IF(LTYPE(NOBAIRS).EQ.20) KSURF(NOBAIRS)=2
PCNT_WAT(NOBAIRS) = profiles_qc(nobtov)%pcnt_wat
PCNT_REG(NOBAIRS) = profiles_qc(nobtov)%pcnt_reg
END IF
END IF
END DO
END IF
END DO
IF ( NOBAIRS < airs_bunch ) airs_end = .true.
! ** find TOA radiances converted from observed BT's
ROBS(:,:) = -1.
profils: DO JN = 1, NPRF
channels: DO JC = 1, NCHN
ICHN = ichan(JC,IDAIRS)
IF ( REJFLAG(AIRSSCH(ICHN),JN,9) == 1 ) CYCLE channels
t_effective = coef(idairs)%ff_bco(jc) &
& + coef(idairs)%ff_bcs(jc) * BTOBS(airssch(ichn),jn)
ROBS(airssch(ichn),jn) = coef(idairs)%planck1(jc) / &
& ( Exp( coef(idairs)%planck2(jc)/t_effective ) - 1.0 )
END DO channels
END DO profils
! ** set height fields to 'height above ground' fields
DO JN = 1, NPRF
DO JL = 1, NLEV
ZHOEXT(JL,JN) = ZHOEXT(JL,JN) - ZHT(NLEVTRL,JN)
END DO
DO JL = 1, NLEVTRL
ZHT(JL,JN) = ZHT(JL,JN) - ZHT(NLEVTRL,JN)
END DO
END DO
!**********************************************************************************************
!* ///// ---------------------------------------------------- /////
!* ///// DETERMINATION OF THE CLEAR/CLOUDY PROFILES (CLDFLAG) /////
!* ///// ---------------------------------------------------- /////
CLDFLAG(:) = 0
!* -- REFERENCE FOR WINDOW CHANNEL
IWINDO = AIRSSCH(IWINDOW)
IWINDO_ALT = AIRSSCH(IWINDOW_ALT)
ICHREF(:) = IWINDO
DO JN = 1, NPRF
IF ( REJFLAG(IWINDO,JN,9) == 1 ) THEN
ICHREF(JN) = IWINDO_ALT
IF ( REJFLAG(IWINDO_ALT,JN,9) == 1 ) THEN
ICHREF(JN) = -1
CLDFLAG(JN) = -1
REJFLAG(:,JN,9) = 1
write(nulout,*) 'WARNING'
write(nulout,*) 'WINDOW AND ALTERNATE WINDOW CHANNEL OBSERVATIONS'
write(nulout,*) 'HAVE BEEN REJECTED. '
write(nulout,*) 'ALL AIRS OBSERVATIONS FROM THIS PROFILE REJECTED'
END IF
END IF
END DO
!* -- CLOUD TOP BASED ON MATCHING OBSERVED BRIGHTNESS TEMPERATURE
!* -- AT A REFERENCE SURFACE CHANNEL WITH BACKGROUND TEMPERATURE PROFILE (PTOP_EQ)
!* -- ON GUESS VERTICAL LEVELS.
LEV_START(:) = 0
!iopt2=1 : calcul de la hauteur en hPa PTOP_MB et du NTOP_MB correspondant
CALL CLOUD_HEIGHT (PTOP_MB,NTOP_MB, btobs,cldflag,zt, &
& zht,zps,zpres,nlevtrl,airssnch,nprf,ichref,lev_start,iopt2)
!iopt1=2 : calcul de la hauteur em metres PTOP_EQ et du NTOP_EQ correspondant
CALL CLOUD_HEIGHT (PTOP_EQ,NTOP_EQ, btobs,cldflag,zt, &
& zht,zps,zpres,nlevtrl,airssnch,nprf,ichref,lev_start,iopt1)
!* -- CLEAR/CLOUDY PROFILE DETECTION USING THE GARAND & NADON ALGORITHM
CALL GARAND1998NADON (CLDFLAG, btobs,ztg,zt, &
& zht,nlevtrl,airssnch,nprf,ptop_eq,ntop_eq,ichref)
!* -- FURTHER TESTS TO REMOVE POTENTIAL CLOUDY PROFILES
! *** TEST # A ***
! *** In daytime, set cloudy if cloud fraction over 5% ***
! WHERE ( CLDFLAG(:) == 0 .AND. CLFR(:) > 5. .AND. SUNZA(:) < 90. ) CLDFLAG(:) = 1
CFSUB(:)=-1.0
DO JN =1, NPRF
IF ( CLDFLAG(JN) == 0 .AND. CLFR(JN) > 5. .AND. SUNZA(JN) < 90. ) THEN
CLDFLAG(JN) = 1
CFSUB(JN)=0.01*CLFR(JN) !conversion % -> 0-1
ENDIF
ENDDO
! *** TEST # B ***
! *** Set cloudy if temperature difference between guess (ZTG) ***
! *** and estimated true (ZTS) skin temperatures is over threshold ***
CALL ESTIM_TS(ZTS, ztg,emi_sfc,rcal_clr,btobs,robs, &
& sfctau,cldflag,ichref,airssnch,nchn,nprf,idairs,"AIRS")
WHERE ( CLDFLAG(:) == 0 .AND. KSURF(:) == 1 &
& .AND. ABS(ZTS(:)-ZTG(:)) > DTW ) CLDFLAG(:) = 1
WHERE ( CLDFLAG(:) == 0 .AND. KSURF(:) /= 1 &
& .AND. ABS(ZTS(:)-ZTG(:)) > DTL ) CLDFLAG(:) = 1
GNCLDFLAG(:)=CLDFLAG(:)
!* ///// ------------------------------------------------------- /////
!* ///// DETERMINATION OF THE ASSIMILABLE OBSERVATIONS (REJFLAG) /////
!* ///// ------------------------------------------------------- /////
! CLDFLAG(:) = 1
!* -- FIRST TESTS TO REJECT OBSERVATIONS
! *** TEST # 1 ***
! *** Do not assimilate where cloudy ***
DO JN = 1, NPRF
IF ( CLDFLAG(JN) == 1 ) then
REJFLAG(:,JN,11) = 1
REJFLAG(:,JN,23) = 1
endif
END DO
! *** TEST # 2 ***
! *** Gross check on valid BTs ***
! already done
!* -- CLOUD TOP BASED ON MATCHING
!* -- OBSERVED BRIGHTNESS TEMPERATURE WITH BACKGROUND TEMPERATURE PROFILES (PTOP_BT)
!* -- OR COMPUTED OBSERVED RADIANCES WITH BACKGROUND RADIANCE PROFILES (PTOP_RD)
!* -- ON 43 RTTOV VERTICAL LEVELS
LEV_START(:) = 0
DO JCH = 1, NCH
ILIST(JCH) = AIRSSCH(ILIST1(JCH))
END DO
CALL CLOUD_TOP ( PTOP_BT,PTOP_RD,NTOP_BT,NTOP_RD, &
& btobs,toext,zhoext,rcal_clr,zps,robs,rcld,xpres,nlev, &
& airssnch,nprf,cldflag,rejflag,bitflag,lev_start,iopt2,ihgt,ichref,nch,ilist)
!* -- REFERENCE CHANNEL FOR CO2-SLICING
DO JN = 1, NPRF
cpt=0
DO JCH=1,NCO2
IF ( REJFLAG(ILIST2_PAIR(JCH),JN,9)==1 .or. REJFLAG(ILIST2(JCH),JN,9)==1 ) cpt=cpt+1
ENDDO
IF (cpt==nco2) THEN
CLDFLAG(JN) = -1
REJFLAG(:,JN,9) = 1
write(nulout,*) 'WARNING'
write(nulout,*) 'CO2 REFERENCE AND ALTERNATE CHANNEL OBSERVATIONS'
write(nulout,*) 'HAVE BEEN REJECTED. '
write(nulout,*) 'ALL AIRS OBSERVATIONS FROM THIS PROFILE REJECTED'
ENDIF
END DO
!* -- EQUIVALENT HEIGHT OF SELECTED WINDOW CHANNEL
HE(:) = PTOP_RD(AIRSSCH(ILIST1(2)),:)
DO JN = 1, NPRF
IF (ICHREF(JN)==IWINDO_ALT) HE(JN) = PTOP_RD(AIRSSCH(ILIST1(3)),JN)
END DO
!* -- CLOUD TOP BASED ON CO2 SLICING
LEV_START(:) = MAX( MIN(LEV_START(:),CO2MAX), CO2MIN )
DO JCH = 1, NCO2
ILIST(JCH) = AIRSSCH(ILIST2(JCH))
ILIST_PAIR(JCH) = AIRSSCH(ILIST2_PAIR(JCH))
END DO
CALL CO2_SLICING ( PTOP_CO2,NTOP_CO2,FCLOUD_CO2, &
& rcal_clr,rcld,robs,zps,xpres,nlev,airssnch,nprf,cldflag,rejflag,bitflag, &
& lev_start,ichref,nco2,ilist,ilist_pair)
!* -- FIND CONSENSUS CLOUD TOP AND FRACTION
CALL SELTOP ( ETOP,VTOP,ECF,VCF,NGOOD, he,ptop_co2,fcloud_co2, &
CFSUB,PTOP_MB,zps,cldflag,gncldflag,nprf,nco2 )
! DO JN=1,NPRF
! IF (ECF(JN)==0.0 .AND. ETOP(JN)==ZPS(JN) ) THEN
! WHERE (REJFLAG(:,JN,11) == 1) REJFLAG(:,JN,11) = 0
! ENDIF
! ENDDO
!* -- FIND RADIATIVE TRANSFER MODEL LEVEL NEAREST TO TRIAL TOP (only compute one time)
IF ( airs_loop_done == 0 ) THEN
DIFFTOP_MIN = 100000.
IMODTOP = 1
DO JL = 1, NLEV
IF ( ABS(RPTOPINC-100.*XPRES(JL)) < DIFFTOP_MIN ) THEN
DIFFTOP_MIN = ABS(RPTOPINC-100.*XPRES(JL))
IMODTOP = JL
END IF
END DO
write(nulout,*) 'TOIT DU MODELE (MB)'
write(nulout,*) 0.01*RPTOPINC
write(nulout,*) 'NIVEAU DU MODELE DE TRANSFERT RADIATIF LE PLUS PRES DU TOIT DU MODELE'
write(nulout,*) IMODTOP
END IF
!* -- FIND MINIMUM LEVEL OF SENSITIVITY FOR CHANNEL ASSIMILATION NOT SENSIBLE TO CLOUDS
! CALL MIN_PRES ( MINP,PMIN,DTAUDP1, zps,transm,xpres,cldflag,nlev,airssnch,nprf,imodtop)
CALL MIN_PRES_NEW (MAXWF, MINP,PMIN,DTAUDP1, zps,transm,xpres,cldflag,nlev,airssnch,nprf,imodtop)
!* -- ASSIMILATION OF OBSERVATIONS WHEN CLOUDY PROFILES
! *** TEST # 3 ***
! *** Assimilation above clouds (refinement of test 1) ***
! *** Set security margin to 2x the std on height from CO2-slicing ***
TAMPON(:) = MAX(50.D0, 2.*VTOP(:))
DO JC = 1, AIRSSNCH
WHERE ( REJFLAG(JC,:,11) == 1 .AND. REJFLAG(JC,:,23) == 1 .AND. ETOP(:) - TAMPON(:) > PMIN(JC,:) )
REJFLAG(JC,:,11) = 0
REJFLAG(JC,:,23) = 0
end WHERE
END DO
! LOOK AT THE FATE OF THE OBSERVATIONS
FATE(:,:) = SUM(REJFLAG(:,:,:),DIM=3)
! FURTHER REASONS TO REJECT OBSERVATIONS
DO JC = 1, AIRSSNCH
DO JN = 1, NPRF
IF ( FATE(JC,JN) == 0 ) THEN
! *** TEST # 4 ***
! *** Background check, do not assimilate if O-P > 3sigma ***
IF ( ABS(BTOBS(JC,JN)-BTCALC(JC,JN)) > 3.0*BTOBSERR(JC) ) THEN
REJFLAG(JC,JN,9) = 1
REJFLAG(JC,JN,16) = 1
END IF
! *** TEST # 5 ***
! *** Do not assimilate shortwave channels during the day ***
IF ( JC >= AIRSSCH(ICHN_SUN) .AND. SUNZA(JN) < NIGHT_ANG ) then
REJFLAG(JC,JN,11) = 1
REJFLAG(JC,JN,7) = 1
END IF
! *** TEST # 6 ***
! *** Do not assimilate surface channels over land ***
IF ( MINP(JC,JN) == NLEV .or. ZPS(JN)-PMIN(JC,JN) < 100. ) THEN
IF ( KSURF(JN) == 0 ) THEN
REJFLAG(JC,JN,11) = 1 !!! comment this line if assimilation under conditions
REJFLAG(JC,JN,19) = 1 !!! comment this line if assimilation under conditions
IF ( PCNT_WAT(JN) > 0.01 .OR. PCNT_REG(JN) > 0.1 .OR. EMI_SFC(JC,JN) < 0.97 ) THEN
REJFLAG(JC,JN,11) = 1
REJFLAG(JC,JN,19) = 1
END IF
! *** TEST # 7 ***
! *** Do not assimilate surface channels over water under conditions ***
ELSE IF ( KSURF(JN) == 1 ) THEN
IF ( PCNT_WAT(JN) < 0.99 .OR. PCNT_REG(JN) < 0.97 .OR. &
& ICE(JN) > 0.001 .OR. ALBEDO(JN) >= 0.17 .OR. EMI_SFC(JC,JN) < 0.9 ) THEN
REJFLAG(JC,JN,11) = 1
REJFLAG(JC,JN,19) = 1
END IF
! *** TEST # 8 ***
! *** Do not assimilate surface channels over sea ice ***
ELSE IF ( KSURF(JN) == 2 ) THEN
REJFLAG(JC,JN,11) = 1
REJFLAG(JC,JN,19) = 1
END IF
END IF
END IF
! *** TEST # 9 ***
! *** Do not assimilate if jacobian has a significant contribution over model top ***
! Condition valid if model top at 10mb or lower only
IF ( NINT(RPTOPINC) >= 1000 ) THEN
IF ( REJFLAG(JC,JN,9) /= 1 .AND. DTAUDP1(JC,JN) > 0.50 ) THEN
REJFLAG(JC,JN,11) = 1
REJFLAG(JC,JN,21) = 1
END IF
END IF
! Condition valid if model top at 10mb or lower only
IF ( NINT(RPTOPINC) >= 1000 ) THEN
IF ( REJFLAG(JC,JN,9) /= 1 .AND. TRANSM(JC,JN,1) < 0.99 ) THEN
REJFLAG(JC,JN,11) = 1
REJFLAG(JC,JN,21) = 1
END IF
END IF
! Condition valid if model top is higher than 10 mb
IF ( NINT(RPTOPINC) < 1000 ) THEN
IF ( REJFLAG(JC,JN,9) /= 1 .AND. TRANSM(JC,JN,1) < 0.95 ) THEN
REJFLAG(JC,JN,11) = 1
REJFLAG(JC,JN,21) = 1
END IF
END IF
! *** TEST # 10 ***
! *** Do not assimilate blacklisted channels ***
IF ( AIRS_ASSIM(JC) == 0 ) REJFLAG(JC,JN,8) = 1
END DO
END DO
! *** TEST # 11 ***
! *** For non blacklisted channels, set Bit 11 if data not corrected (Bit 6 not set) ***
IF ( AIRS_ASSIM(JC) == 1 .AND. CORFLAG(JC,JN) == 0 ) REJFLAG(JC,JN,11) = 1
!* -- FOR EACH PROFILE, ARE ALL NON-BLACKLISTED CHANNELS ASSIMILATED
ASSIM_ALL(:) = .true.
FATE(:,:) = SUM(REJFLAG(:,:,:),DIM=3)
prf: DO JN = 1, NPRF
chn: DO JC = 1, AIRSSNCH
IF ( REJFLAG(JC,JN,8) == 0 ) THEN
IF ( FATE(JC,JN) /= 0 ) THEN
ASSIM_ALL(JN) = .false.
EXIT chn
END IF
END IF
END DO chn
END DO prf
!******************************************************************************************
!* -- PUT REJECT FLAGS INTO CMA VARIABLE --
!* ----------------------------------------
NOBAIRS = 0
count_airs = 0
DO JF = 1, NFILES
IF ( CFAMTYP(JF) .EQ. 'TO' .AND. NBEGINTYP(JF) .GT. 0 ) THEN
IBEGIN = NBEGINTYP(JF)
ILAST = NENDTYP(JF)
IBEGINOB = MOBDATA(NCMOBS,IBEGIN)
ILASTOB = MOBDATA(NCMOBS,ILAST)
DO JO = IBEGINOB, ILASTOB
IDATYP = MOD(MOBHDR(NCMITY,JO),1000)
IF ( IDATYP .EQ. 183) THEN
count_airs = count_airs + 1
IF ( count_airs > airs_loop_done * airs_bunch .AND. &
& count_airs <= (airs_loop_done+1) * airs_bunch ) THEN
NOBAIRS = NOBAIRS + 1
IDATA = MOBHDR(NCMRLN,JO)
IDATEND = MOBHDR(NCMNLV,JO) + IDATA - 1
DO JDATA= IDATA, IDATEND
IF ( MOBDATA(NCMASS,JDATA).EQ.1 ) THEN
ICHN = NINT(ROBDATA8(NCMPPP,JDATA))
ICHN = MAX(0,MIN(ICHN,JPCH+1))
DO NFLG = 0, BITFLAG
IF ( REJFLAG(AIRSSCH(ICHN),NOBAIRS,NFLG) == 1 ) &
& MOBDATA(NCMFLG,JDATA) = IBSET ( MOBDATA(NCMFLG,JDATA), NFLG )
END DO
END IF
END DO
END IF
END IF
END DO
END IF
END DO
!* -- ADDITION OF NEW AIRS INFORMATION IN BURP FILE
!* ------------------------------------------------
IPRO = airs_loop_done * airs_bunch + 1
DO JN = 1, NPRF
AIRSPRO(IPRO)%ETOP = ETOP(JN)
AIRSPRO(IPRO)%VTOP = VTOP(JN)
AIRSPRO(IPRO)%ECF = 100.*ECF(JN)
AIRSPRO(IPRO)%VCF = 100.*VCF(JN)
AIRSPRO(IPRO)%HE = HE(JN)
AIRSPRO(IPRO)%ZTS = ZTS(JN)
AIRSPRO(IPRO)%NGOOD = NGOOD(JN)
AIRSPRO(IPRO)%ZT = ZT(NLEVTRL,JN)
AIRSPRO(IPRO)%ZTG = ZTG(JN)
AIRSPRO(IPRO)%ZLQEXP = EXP(ZLQ(NLEVTRL,JN))
AIRSPRO(IPRO)%ZPS = 100.*ZPS(JN)
AIRSPRO(IPRO)%EMISFC(:) = EMI_SFC(:,JN)
AIRSPRO(IPRO)%SFCTYP = KSURF(JN)
AIRSPRO(IPRO)%ASSIM_ALL = ASSIM_ALL(JN)
IPRO = IPRO + 1
END DO
deallocate (ZTG,ZPS,ZTS,ZT,ZHT,ZLQ)
deallocate (BTOBSERR,BTOBS,BTCALC,RCAL_CLR,SFCTAU)
deallocate (ROBS,RCLD,TRANSM,EMI_SFC)
deallocate (CLFR,TOEXT,ZHOEXT,SUNZA)
deallocate (ALBEDO,ICE,PCNT_WAT,PCNT_REG)
deallocate (KSURF,LTYPE)
deallocate (CLDFLAG,REJFLAG,LEV_START,ILIST)
deallocate (NTOP_EQ,NTOP_BT,NTOP_RD)
deallocate (NTOP_CO2,NGOOD)
deallocate (PTOP_EQ,PTOP_BT,PTOP_RD)
deallocate (PTOP_CO2,FCLOUD_CO2,HE)
deallocate (ETOP,VTOP,ECF,VCF)
deallocate (MINP,FATE)
deallocate (PMIN,DTAUDP1,TAMPON)
deallocate (ICHREF)
deallocate (ASSIM_ALL,ZPRES,PTOP_MB,NTOP_MB,CFSUB)
deallocate (MAXWF)
deallocate (GNCLDFLAG,ILIST_PAIR)
deallocate (CORFLAG)
END SUBROUTINE AIRSQC