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! version 3; Last Modified: May 7, 2008.
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SUBROUTINE oda_qcv(lobsSpaceData) 1,33
use obsSpaceData_mod
use columnData_mod
use bufr
use rmatrix_mod ,only : rmat_lnondiagr
IMPLICIT NONE
*
*Purpose : 1) Modify Jo [OBS_JOBS] according to
* Andersson and Jarvinen 1999, Variational quality control,
* Q.J.R., 125, pp. 697-722.
* 2) Save the values of (1-Wqc) in OBS_QCV
* for gradient factorization and postalt flag criterion.
*
*Author : S. Pellerin, ARMA, January 2009
* Generalisation of QCVAR originally embeded in observation
* operators from P. Koclas, J. Halle and J. St-James
*
type(struct_obs) :: lobsSpaceData
integer :: index_body,istyp,jj,index_header,ityp,index_body_start,ierr,index_family
real*8 :: zgami,zjon,zqcarg,zppost,zlev,zslev
logical :: lluv
logical :: includeFlag
C
BODY: do index_body = 1, obs_numbody(lobsSpaceData)
includeFlag = (obs_bodyElem_i(lobsSpaceData,OBS_ASS,index_body).eq.1)
+ .and. (obs_getFamily(lobsSpaceData,bodyIndex=index_body).ne.'RO')
C pas de qcvar pour les radiances en mode matrice R non diagonale
if (rmat_lnondiagr) includeFlag =
+ includeFlag .and.
+ (obs_getFamily(lobsSpaceData,bodyIndex=index_body).ne.'TO')
if (includeFlag) then
index_header = obs_bodyElem_i(lobsSpaceData,OBS_HIND,index_body)
index_body_start = obs_headElem_i(lobsSpaceData,OBS_RLN,INDEX_HEADER)
ZLEV = obs_bodyElem_r(lobsSpaceData,OBS_PPP,INDEX_BODY)
zgami = obs_bodyElem_r(lobsSpaceData,OBS_POB,index_body)
ITYP = obs_bodyElem_i(lobsSpaceData,OBS_VNM,INDEX_BODY)
LLUV = ((ITYP .EQ. BUFR_NEUU .OR. ITYP .EQ. BUFR_NEUS) .AND.
& col_varExist('UU')) .OR. ((ITYP .EQ. BUFR_NEVV .OR.
& ITYP .EQ. BUFR_NEVS).AND.col_varExist('VV'))
IF (LLUV) THEN
IF (ITYP .EQ. BUFR_NEUU .OR. ITYP .EQ. BUFR_NEUS)THEN
C
C In order to calculate the contribution to Jo from a wind, the o-a
C must be available for both u and v components. Hence, loop over only
C data for which o-a has already been calculated
C
DO JJ=INDEX_BODY_START, INDEX_BODY
ISTYP = obs_bodyElem_i(lobsSpaceData,OBS_VNM,JJ)
ZSLEV = obs_bodyElem_r(lobsSpaceData,OBS_PPP,JJ)
IF ((ISTYP .EQ. BUFR_NEVV
1 .OR. ISTYP .EQ. BUFR_NEVS) .AND.
2 ZSLEV .EQ. ZLEV) THEN
ZJON=obs_bodyElem_r(lobsSpaceData,OBS_JOBS,INDEX_BODY)+
& obs_bodyElem_r(lobsSpaceData,OBS_JOBS,JJ)
ZQCARG = ZGAMI + EXP(-1.0D0*ZJON)
ZPPOST = ZGAMI/ZQCARG
C
C Store the value of o-a multiplied by one minus the posterior
C probability of gross error (needed for the adjoint calculations)
C
call obs_bodySet_r(lobsSpaceData,OBS_QCV,INDEX_BODY, ZPPOST)
call obs_bodySet_r(lobsSpaceData,OBS_QCV,JJ, ZPPOST)
call obs_bodySet_r(lobsSpaceData,OBS_JOBS,INDEX_BODY,-LOG(ZQCARG/(ZGAMI+1.D0))
& /2.D0)
call obs_bodySet_r(lobsSpaceData,OBS_JOBS,JJ, -LOG(ZQCARG/(ZGAMI+1.D0))
& /2.D0)
C
C Contribution of both u and v added to the cost function at the
C same time (see tech. note by Andersson and Jarvinen)
C
ENDIF
ENDDO
ELSE ! ITYP
DO JJ=INDEX_BODY_START, INDEX_BODY
ISTYP = obs_bodyElem_i(lobsSpaceData,OBS_VNM,JJ)
ZSLEV = obs_bodyElem_r(lobsSpaceData,OBS_PPP,JJ)
IF ((ISTYP .EQ. BUFR_NEUU .OR.
1 ISTYP .EQ. BUFR_NEUS) .AND.
2 ZSLEV .EQ. ZLEV) THEN
ZJON=obs_bodyElem_r(lobsSpaceData,OBS_JOBS,INDEX_BODY)+
& obs_bodyElem_r(lobsSpaceData,OBS_JOBS,JJ)
ZQCARG = ZGAMI + EXP(-1.0D0*ZJON)
ZPPOST = ZGAMI/ZQCARG
call obs_bodySet_r(lobsSpaceData,OBS_QCV,INDEX_BODY, ZPPOST)
call obs_bodySet_r(lobsSpaceData,OBS_QCV,JJ, ZPPOST)
call obs_bodySet_r(lobsSpaceData,OBS_JOBS,INDEX_BODY,-LOG(ZQCARG/(ZGAMI+1.D0))
& /2.D0)
call obs_bodySet_r(lobsSpaceData,OBS_JOBS,JJ, -LOG(ZQCARG/(ZGAMI+1.D0))
& /2.D0)
ENDIF
enddo
endif !ITYP
else ! LLUV
zjon = obs_bodyElem_r(lobsSpaceData,OBS_JOBS,index_body)
zqcarg = zgami + exp(-1.0D0*zjon)
zppost = zgami/zqcarg
call obs_bodySet_r(lobsSpaceData,OBS_QCV,index_body, zppost)
call obs_bodySet_r(lobsSpaceData,OBS_JOBS,INDEX_BODY, - log(zqcarg/(zgami+1.D0)))
endif ! LLUV
endif ! includeFlag
enddo BODY
END subroutine oda_qcv