man dbamsg (1): Work with encoded meteorological data

SYNOPSIS

dbamsg [command] [options] [args...]

DESCRIPTION

Examine, dump and convert files containing meteorological data. It supports observations encoded in BUFR, CREX and AOF formats.

dbamsg always requires a non-switch argument, that indicates what is the operation that should be performed:

help: Print a help summary.
help manpage: Print this manpage.
scan [options] [filter] filename [filename [...]]: Summarise the contents of a file with meteorological data.
head [options] [filter] filename [filename [...]]: Dump the contents of the header of a file with meteorological data.
dump [options] [filter] filename [filename [...]]: Dump the contents of a file with meteorological data.
cat [options] [filter] filename [filename [...]]: Dump the raw data of a file with meteorological data.
bisect [options] --test=testscript filename: Bisect filename and output the minimum subsequence found for which testscript fails.. Run testscript passing parts of filename on its stdin and checking the return code. Then divide the input in half and try on each half. Keep going until testscript does not fail in any portion of the file. Output to stdout the smallest portion for which testscript fails. This is useful to isolate the few messages in a file that cause problems.
convert [options] [filter] filename [filename [...]]: Convert meteorological data between different formats.
compare [options] filename1 [filename2]: Compare two files with meteorological data.
fixaof [options] filename [filename1 [...]]]: Recomputes the start and end of observation period in the headers of the given AOF files.
makebufr [options] filename [filename1 [...]]]: Read a simple description of a BUFR file and output the BUFR file.. Read a simple description of a BUFR file and output the BUFR file. This only works for simple BUFR messages without attributes encoded with data present bitmaps.

OPTIONS

dbamsg follows the usual GNU command line syntax, with long options starting with two dashes (`-').

Options used to filter messages

--category=num: match messages with the given data category
--subcategory=num: match BUFR messages with the given data subcategory
--check-digit=num: match CREX messages with check digit (if 1) or without check digit (if 0)
--unparsable: match only messages that cannot be parsed
--parsable: match only messages that can be parsed
--index=expr: match messages with the index in the given range (ex.: 1-5,9,22-30)

Option for command scan

-?, --help: print an help message
--verbose: verbose output
-t type, --type=type: format of the input data ('bufr', 'crex', 'aof')
--rejected=fname: write unprocessed data to this file

Option for command head

-?, --help: print an help message
--verbose: verbose output
-t type, --type=type: format of the input data ('bufr', 'crex', 'aof')
--rejected=fname: write unprocessed data to this file

Option for command dump

-?, --help: print an help message
--verbose: verbose output
-t type, --type=type: format of the input data ('bufr', 'crex', 'aof')
--rejected=fname: write unprocessed data to this file
--interpreted: dump the message as understood by the importer
--precise: import messages using precise contexts instead of standard ones
--text: dump as text that can be processed by dbamsg makebufr
--csv: dump in machine readable CSV format
--json: dump in machine readable JSON format
--dds: dump structure of data description section
--structured: structured dump of the message contents

Option for command cat

-?, --help: print an help message
--verbose: verbose output
-t type, --type=type: format of the input data ('bufr', 'crex', 'aof')
--rejected=fname: write unprocessed data to this file

Option for command bisect

-?, --help: print an help message
--verbose: verbose output
--test=cmd: command to run to test a message group
-t type, --type=type: format of the input data ('bufr', 'crex', 'aof')
--rejected=fname: write unprocessed data to this file

Option for command convert

-?, --help: print an help message
--verbose: verbose output
-t type, --type=type: format of the input data ('bufr', 'crex', 'aof', 'csv')
-d type, --dest=type: format of the data in output ('bufr', 'crex', 'aof')
--rejected=fname: write unprocessed data to this file
--template=name: template of the data in output (autoselect if not specified, 'list' gives a list)
-r rep_memo, --report=rep_memo: force output data to be of this type of report
--precise: import messages using precise contexts instead of standard ones
--bufr2netcdf-categories: recompute data categories and subcategories according to message contents, for use as input to bufr2netcdf
-o fname, --output=fname: destination file. Default: stdandard output

Option for command compare

-?, --help: print an help message
--verbose: verbose output
-t type, --type1=type: format of the first file to compare ('bufr', 'crex', 'aof')
-d type, --type2=type: format of the second file to compare ('bufr', 'crex', 'aof')
--rejected=fname: write unprocessed data to this file

Option for command fixaof

-?, --help: print an help message
--verbose: verbose output

Option for command makebufr

-?, --help: print an help message
--verbose: verbose output

EXAMPLES

Here are some example invocations of \fBdbamsg\fP:

  # Convert an AOF message to BUFR
  dbamsg convert file.aof > file.bufr
  # Convert a BUFR message to CREX
  dbamsg convert file.bufr -d crex > file.crex
  # Convert BUFR messages to CREX, but skip all those not in january 2010
  dbamsg convert year=2010 month=1 file.bufr -d crex > file.crex
  # Dump the content of a message, as they are in the message
  dbamsg dump file.bufr
  # Dump the content of a message, interpreted as physical quantities
  dbamsg dump --interpreted file.bufr

TEMPLATE NAMES

This is a list of possible template names for the --template switch:

acars: ACARS (autodetect)
acars-ecmwf: ACARS ECMWF (4.145)
acars-wmo: ACARS WMO
airep: AIREP (autodetect)
airep-ecmwf: AIREP ECMWF (4.142)
amdar: AMDAR (autodetect)
amdar-ecmwf: AMDAR ECMWF (4.144)
amdar-wmo: AMDAR WMO
buoy: Buoy (1.21)
generic: Generic (255.0)
metar: Metar (0.140)
pilot: pilot (autodetect)
pilot-ecmwf: Pilot (2.91)
pilot-wmo: Pilot (2.1, 2.2, 2.3)
pollution: Pollution (8.171)
ship: Synop ship (autodetect)
ship-abbr: Synop ship (abbreviated) (1.9)
ship-auto: Synop ship (auto) (1.13)
ship-plain: Synop ship (normal) (1.11)
ship-reduced: Synop ship (reduced) (1.19)
ship-second: Synop ship (second record) (1.12)
ship-wmo: Ship WMO
synop: Synop (autodetect)
synop-ecmwf: Synop ECMWF (autodetect) (0.1)
synop-ecmwf-auto: Synop ECMWF land auto (0.3)
synop-ecmwf-land: Synop ECMWF land (0.1)
synop-ecmwf-land-high: Synop ECMWF land high level station (0.1)
synop-wmo: Synop WMO (0.1)
temp: Temp (autodetect)
temp-ecmwf: Temp ECMWF (autodetect)
temp-ecmwf-land: Temp ECMWF land (2.101)
temp-ecmwf-ship: Temp ECMWF ship (2.102)
temp-radar: Temp radar doppler wind profile (6.1)
temp-ship: Temp ship (autodetect)
temp-wmo: Temp WMO (2.101)
wmo: WMO style templates (autodetect)

--template=list will also print the list.

AUTHOR

dbamsg has been written by Enrico Zini <[email protected]> for ARPA Emilia Romagna, Servizio Idrometeorologico.