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! (C) Copyright 2005- ECMWF.
!
! This software is licensed under the terms of the Apache Licence Version 2.0
! which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
!
! In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
! virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
!
!
! Description: How to read attributes of keys in BUFR messages.
!
!
program bufr_attributes
use eccodes
implicit none
integer :: ifile
integer :: iret
integer :: ibufr
integer :: count = 0
integer(kind=4) :: iVal, conf
real(kind=8) :: t2m
character(len=32) :: units, confUnits
call codes_open_file(ifile, '../../data/bufr/syno_multi.bufr', 'r')
do while (.true.)
! A BUFR message is loaded from the file,
! ibufr is the BUFR id to be used in subsequent calls
call codes_bufr_new_from_file(ifile, ibufr, iret)
if (iret == CODES_END_OF_FILE) exit
! Get and print some keys from the BUFR header
write (*, *) 'message: ', count
! We need to instruct ecCodes to expand all the descriptors
! i.e. unpack the data values
call codes_set(ibufr, "unpack", 1);
! ----------------------------------------------------------------
! We will read the value and all the attributes available for
! the 2m temperature.
! ----------------------------------------------------------------
! Get the element's value as as real
call codes_get(ibufr, 'airTemperatureAt2M', t2m);
write (*, *) ' airTemperatureAt2M:', t2m
! Get the element's code (see BUFR code table B)
call codes_get(ibufr, 'airTemperatureAt2M->code', iVal);
write (*, *) ' airTemperatureAt2M->code:', iVal
! Get the element's units (see BUFR code table B)
call codes_get(ibufr, 'airTemperatureAt2M->units', units)
write (*, *) ' airTemperatureAt2M->units:', units
! Get the element's scale (see BUFR code table B)
call codes_get(ibufr, 'airTemperatureAt2M->scale', iVal);
write (*, *) ' airTemperatureAt2M->code:', iVal
! Get the element's reference (see BUFR code table B)
call codes_get(ibufr, 'airTemperatureAt2M->reference', iVal);
write (*, *) ' airTemperatureAt2M->reference:', iVal
! Get the element's width (see BUFR code table B)
call codes_get(ibufr, 'airTemperatureAt2M->width', iVal);
write (*, *) ' airTemperatureAt2M->width:', iVal
! -------------------------------------------------------------------
! The 2m temperature data element in this message has an associated
! field: percentConfidence. Its value and attributes can be accessed
! in a similar manner as was shown above for 2m temperature.
! -------------------------------------------------------------------
! Get the element's value as as real
call codes_get(ibufr, 'airTemperatureAt2M->percentConfidence', conf);
write (*, *) ' airTemperatureAt2M->percentConfidence:', conf
! Get the element's code (see BUFR code table B)
call codes_get(ibufr, 'airTemperatureAt2M->percentConfidence->code', iVal);
write (*, *) ' airTemperatureAt2M->percentConfidence->code:', iVal
! Get the element's units (see BUFR code table B)
call codes_get(ibufr, 'airTemperatureAt2M->percentConfidence->units', confUnits)
write (*, *) ' airTemperatureAt2M->percentConfidence->units:', confUnits
! Get the element's scale (see BUFR code table B)
call codes_get(ibufr, 'airTemperatureAt2M->percentConfidence->scale', iVal);
write (*, *) ' airTemperatureAt2M->percentConfidence->code:', iVal
! Get the element's reference (see BUFR code table B)
call codes_get(ibufr, 'airTemperatureAt2M->percentConfidence->reference', iVal);
write (*, *) ' airTemperatureAt2M->percentConfidence->reference:', iVal
! Get the element's width (see BUFR code table B)
call codes_get(ibufr, 'airTemperatureAt2M->percentConfidence->width', iVal);
write (*, *) ' airTemperatureAt2M->percentConfidence->width:', iVal
! Release the BUFR message
call codes_release(ibufr)
count = count + 1
end do
! Close file
call codes_close_file(ifile)
end program bufr_attributes
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