SUBROUTINE get_ngfld (ng, model, ifield, ncid, nfiles, S, & & update, LBi, UBi, UBj, UBk, & & Istr, Iend, Jrec, & & Fout) ! !svn $Id$ !================================================== Hernan G. Arango === ! Copyright (c) 2002-2020 The ROMS/TOMS Group ! ! Licensed under a MIT/X style license ! ! See License_ROMS.txt ! !======================================================================= ! ! ! This routine reads in requested non-gridded field from specified ! ! NetCDF file. A non-gridded field has different dimensions than ! ! model spatial dimensions. Forward time processing. ! ! ! ! On Input: ! ! ! ! ng Nested grid number. ! ! model Calling model identifier. ! ! ifield Field ID. ! ! ncid NetCDF file ID. ! ! nfiles Number of input NetCDF files. ! ! S I/O derived type structure, TYPE(T_IO). ! ! LBi "Fout" 1st dimension lower-bound value. ! ! UBi "Fout" 1st dimension upper-bound value. ! ! UBj "Fout" 2nd dimension upper-bound value, if any. ! ! Otherwise, a value of one is expected. ! ! UBk "Fout" time dimension upper-bound value, if any. ! ! Otherwise, a value of one is expected. ! ! Istr Starting location of read data in the 1st dimension. ! ! Iend Ending location of read data in the 1st dimension; ! ! Number of records read is: Iend-Istr+1. ! ! Jrec Number of records read in the 2st dimension. ! ! ! ! On Output: ! ! ! ! Fout Read field. ! ! update Switch indicating reading of the requested field ! ! the current time step. ! ! ! !======================================================================= ! USE mod_param USE mod_parallel USE mod_iounits USE mod_ncparam USE mod_netcdf USE mod_scalars ! USE dateclock_mod, ONLY : time_string USE strings_mod, ONLY : FoundError ! implicit none ! ! Imported variable declarations. ! logical, intent(out) :: update integer, intent(in) :: ng, model, ifield, nfiles integer, intent(in) :: LBi, UBi, UBj, UBk, Istr, Iend, Jrec integer :: ncid TYPE(T_IO), intent(inout) :: S(nfiles) real(r8), intent(inout) :: Fout(LBi:UBi,UBj,UBk) ! ! Local variable declarations. ! logical :: Linquire, Liocycle, Lmulti, Lonerec integer :: Nrec, Tid, Tindex, Trec, Vid, Vtype integer :: i, ic, j, job, lend, lstr, npts real(r8) :: Aval, Fmax, Fmin real(dp) :: Clength, Tdelta real(dp) :: Tmax, Tmin, Tmono, Tscale real(dp) :: Tsec, Tval real(r8), dimension((UBi-LBi+1)*UBj) :: A character (len=22) :: t_code ! SourceFile="ROMS/Utility/get_ngfld.F" ! !----------------------------------------------------------------------- ! Initialize. !----------------------------------------------------------------------- ! IF (FoundError(exit_flag, NoError, 92, & & "ROMS/Utility/get_ngfld.F")) RETURN ! ! Determine if inquiring about the field to process in input NetCDF ! file(s). This usually happens on first call or when the field ! time records are split (saved) in several multi-files. ! Linquire=.FALSE. Lmulti=.FALSE. IF (iic(ng).eq.0) Linquire=.TRUE. IF (.not.Linquire.and. & & ((Iinfo(10,ifield,ng).gt.1).and. & & (Linfo( 6,ifield,ng).or. & & (Finfo( 2,ifield,ng)*day2sec.lt.time(ng))))) THEN Linquire=.TRUE. Lmulti=.TRUE. END IF ! ! If appropriate, inquire about the contents of input NetCDF file and ! fill information arrays. ! ! Also, if appropriate, deactivate the Linfo(6,ifield,ng) switch after ! the query for the UPPER snapshot interpolant from previous multifile ! in the list. The switch was activated previously to indicate the ! processing of the FIRST record of the file for the LOWER snapshot ! interpolant. ! IF (Linquire) THEN job=1 CALL inquiry (ng, model, job, UBk, Iend, UBi, ifield, ncid, & & Lmulti, nfiles, S) IF (FoundError(exit_flag, NoError, 123, & & "ROMS/Utility/get_ngfld.F")) RETURN IF (Linfo(6,ifield,ng)) THEN Linfo(6,ifield,ng)=.FALSE. END IF END IF ! !----------------------------------------------------------------------- ! If appropriate, read in new data. !----------------------------------------------------------------------- ! update=.FALSE. Tmono=Finfo(7,ifield,ng) ! IF ((Tmono.lt.time(ng)).or.(iic(ng).eq.0).or. & & (iic(ng).eq.ntstart(ng))) THEN ! ! Load properties for requested field from information arrays. ! Liocycle=Linfo(2,ifield,ng) Lonerec =Linfo(3,ifield,ng) Vtype =Iinfo(1,ifield,ng) Vid =Iinfo(2,ifield,ng) Tid =Iinfo(3,ifield,ng) Nrec =Iinfo(4,ifield,ng) Tindex =Iinfo(8,ifield,ng) Trec =Iinfo(9,ifield,ng) Tmin =Finfo(1,ifield,ng) Tmax =Finfo(2,ifield,ng) Clength =Finfo(5,ifield,ng) Tscale =Finfo(6,ifield,ng) ncfile =Cinfo(ifield,ng) ! IF (Liocycle) THEN Trec=MOD(Trec,Nrec)+1 ELSE Trec=Trec+1 END IF Iinfo(9,ifield,ng)=Trec ! IF (Trec.le.Nrec) THEN ! ! Set rolling index for two-time record storage of input data. If ! "UBk" is unity, input data is stored in recordless array by the ! calling program. ! IF (UBk.eq.1) THEN Tindex=1 ELSE Tindex=3-Tindex END IF Iinfo(8,ifield,ng)=Tindex ! ! Read in time coordinate. ! IF ((Tid.ge.0).and.(Tid.ne.Vid)) THEN CALL netcdf_get_time (ng, model, ncfile, Tname(ifield), & & Rclock%DateNumber, Tval, & & ncid = ncid, & & start = (/Trec/), & & total = (/1/)) IF (FoundError(exit_flag, NoError, 184, & & "ROMS/Utility/get_ngfld.F")) THEN IF (Master) WRITE (stdout,50) TRIM(Tname(ifield)), Trec RETURN END IF Tval=Tval*Tscale Vtime(Tindex,ifield,ng)=Tval ! ! Activate switch Linfo(6,ifield,ng) if processing the LAST record of ! the file for the LOWER time snapshot. We need to get the UPPER time ! snapshot from NEXT multifile. ! IF ((Trec.eq.Nrec).and.(Tval*day2sec.le.time(ng))) THEN Linfo(6,ifield,ng)=.TRUE. END IF END IF ! ! Read in non-gridded data. The conditional statement on Jrec is to ! differentiate between reading a 3D and 2D array. ! IF (Vid.ge.0) THEN Fmin=0.0_r8 Fmax=0.0_r8 IF ((Jrec.gt.1).or. & & ((Jrec.eq.1).and.(Iinfo(7,ifield,ng).gt.0))) THEN npts=(Iend-Istr+1)*Jrec CALL netcdf_get_fvar (ng, model, ncfile, Vname(1,ifield), & & A, & & ncid = ncid, & & start = (/1,1,Trec/), & & total = (/Iend-Istr+1,Jrec,1/)) ELSE npts=Iend-Istr+1 IF (npts == 1) THEN CALL netcdf_get_fvar(ng, model, ncfile, Vname(1,ifield),& & A, & & ncid = ncid, & & start = (/Trec/), & & total = (/1/)) ELSE CALL netcdf_get_fvar(ng, model, ncfile, Vname(1,ifield),& & A, & & ncid = ncid, & & start = (/1,Trec/), & & total = (/Iend-Istr+1,1/)) END IF END IF IF (FoundError(exit_flag, NoError, 231, & & "ROMS/Utility/get_ngfld.F")) THEN IF (Master) WRITE (stdout,50) TRIM(Vname(1,ifield)), Trec RETURN END IF Fmin=A(1)*Fscale(ifield,ng) Fmax=A(1)*Fscale(ifield,ng) ic=0 DO j=1,Jrec DO i=Istr,Iend ic=ic+1 Aval=A(ic)*Fscale(ifield,ng) Fmin=MIN(Fmin,Aval) Fmax=MAX(Fmax,Aval) Fout(i,j,Tindex)=Aval END DO END DO Finfo(8,ifield,ng)=Fmin Finfo(9,ifield,ng)=Fmax IF (Master) THEN IF (UBk.eq.1) THEN WRITE (stdout,60) TRIM(Vname(2,ifield)), ng, Fmin, Fmax ELSE lstr=SCAN(ncfile,'/',BACK=.TRUE.)+1 lend=LEN_TRIM(ncfile) Tsec=Tval*day2sec CALL time_string (Tsec, t_code) WRITE (stdout,70) TRIM(Vname(2,ifield)), t_code, & & ng, Trec, Tindex, ncfile(lstr:lend), & & Tmin, Tmax, Tval, Fmin, Fmax END IF END IF update=.TRUE. END IF END IF ! ! Increment the local time variable "Tmono" by the interval between ! snapshots. If the interval is negative, indicating cycling, add in ! a cycle length. Load time value (sec) into "Tintrp" which used ! during interpolation between snapshots. ! IF (.not.Lonerec) THEN Tdelta=Vtime(Tindex,ifield,ng)-Vtime(3-Tindex,ifield,ng) IF (Liocycle.and.(Tdelta.lt.0.0_r8)) THEN Tdelta=Tdelta+Clength END IF Tmono=Tmono+Tdelta*day2sec Finfo(7,ifield,ng)=Tmono Tintrp(Tindex,ifield,ng)=Tmono END IF END IF ! 50 FORMAT (/,' GET_NGFLD - error while reading variable: ',a,2x, & & ' at TIME index = ',i7) 60 FORMAT (3x,' GET_NGFLD - ',a,/,19x,'(Grid = ',i2.2, & & ', Min = ',1pe15.8,' Max = ', 1pe15.8,')') 70 FORMAT (3x,' GET_NGFLD - ',a,',',t68,a,/,19x, & & '(Grid= ',i2.2,', Rec=',i7.7,', Index=',i1, & & ', File: ',a,')',/,19x, & & '(Tmin= ', f15.4, ' Tmax= ', f15.4,')', & & t71, 't = ', f15.4 ,/, 19x, & & '(Min = ', 1p,e15.8,0p,' Max = ',1p,e15.8,0p,')') RETURN END SUBROUTINE get_ngfld