1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
! (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 values of different type of keys from BUFR messages.
!
!
program bufr_get_keys
use eccodes
implicit none
integer :: ifile
integer :: iret
integer :: ibufr
integer :: i, count = 0
integer(kind=4) :: blockNumber, stationNumber
real(kind=8) :: t2m
integer(kind=4), dimension(:), allocatable :: descriptors
real(kind=8), dimension(:), allocatable :: values
character(len=9) :: typicalDate
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);
! Get as character
call codes_get(ibufr, 'typicalDate', typicalDate)
write (*, *) ' typicalDate:', typicalDate
! Get as integer
call codes_get(ibufr, 'blockNumber', blockNumber);
write (*, *) ' blockNumber:', blockNumber
! Get as integer
call codes_get(ibufr, 'stationNumber', stationNumber);
write (*, *) ' stationNumber:', stationNumber
! get as real
call codes_get(ibufr, 'airTemperatureAt2M', t2m);
write (*, *) ' airTemperatureAt2M:', t2m
! ---- array of integer ----------------
! get the expanded descriptors
call codes_get(ibufr, 'bufrdcExpandedDescriptors', descriptors)
do i = 1, size(descriptors)
write (*, *) ' ', i, descriptors(i)
end do
! ---- array of real ----------------
! Get the expanded data values
call codes_get(ibufr, 'numericValues', values)
do i = 1, size(values)
write (*, *) ' ', i, values(i)
end do
! Get as character
call codes_get(ibufr, 'typicalDate', typicalDate)
write (*, *) ' typicalDate:', typicalDate
! Free arrays
deallocate (values)
deallocate (descriptors)
! Release the BUFR message
call codes_release(ibufr)
count = count + 1
end do
! Close file
call codes_close_file(ifile)
end program bufr_get_keys
|
