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metadata

ybrugnara edited this page Dec 10, 2019 · 19 revisions

Standard metadata entries

The metadata line is deliberately flexible - it's OK to use it for anything, as required. But we should standardize, where possible, on common entries. For example:

Abbreviation Value Description
orig =any Original observation value with units (e.g. '33F', '29.78in')
orig.date =any Original observation date, when different from the date provided in the Year, Month, Day columns (e.g. '23 September 1902')
orig.time =any Original observation time (e.g. '14:30', 'noon')
qc =any Any meaningful flag description/code from the quality control (e.g. the name of a test failed by the observation). If more than one, they should be separated by semicolons
ATB =any Only for pressure: original temperature of the barometer with units (e.g. '55F')
PTC =[Y,N,?] Only for pressure: have the observations been corrected for temperature?
PGC =[Y,N,?] Only for pressure: have the observations been corrected for gravity?
Alias =any Alternative station name(s). If more than one, they should be separated by semicolons
QC software =any Name and version of the software used for the QC (if any)
Data policy =any Data license, see here for some examples (e.g. 'WMO essential')
Calendar =any To be used if a calendar different from the Gregorian is adopted, in particular for monthly data (e.g. 'Julian')
Instrument =any Information on the instrument (e.g. 'Fortin Duroni N.1740')
Height =any Height of the instrument from the ground (e.g. '4.5m')
Adjusted =Y Have the data been adjusted/homogenized?
Correction =any Correction applied by the data provider (e.g. '+3.2hPa')
Reference =any Relevant reference or link, for example to a paper describing the homogenization
Obs.times =any Fixed observation times (e.g. 'sunrise/2pm/sunset'), can be given also for daily or monthly averages
Note =any Anything else

Capitalized abbreviations in this table can be used in the header (in that case they apply to all observations provided in the SEF file, except where the same entries appear in the Meta column). Note that metadata entries are not case sensitive (i.e. 'ATB' is equal to 'atb').

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