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 Organization

NO 71
Acronym UBAG
Name German Environment Agency
Address 1 Umweltbundesamt, Wörlitzer Platz 1, 06844 Dessau-Roßlau
Address 2 Umweltbundesamt (Federal Environment Agency) FG II4.5, Air Monitoring Network, Paul-Ehrlich-Str. 29, 63225 Langen
Address 3
Country/Territory Germany
Website https://www.umweltbundesamt.de/gaw

 Contact(s)

Name Cedric Couret
Prefix Ing.
Email cedric.couret@uba.de
Organization No 71
Organization acronym UBAG
Organization name German Environment Agency
Organization country/territory Germany
Address 1 Umweltbundesamt, Umweltforschungsstation Schneefernerhaus, Zugspitze 5, 82475 Zugspitze
Address 2
Address 3
Country/territory Germany
Tel +498821924110
Fax
Last updated date 2022-05-12


 Background observation
 UTC
 ppt
 2002-01-01 00:00:00 - 9999-12-31 23:59:59: WMO SF6 X2014
 2002-01-01 00:00:00 - 9999-12-31 23:59:59: Hewlett Packard Modified HP 6890 Chem. station, # US00030144(Gas chromatography (ECD))
 2001-01-01 00:00:00 - 9999-12-31 23:59:59: 3.00 (m)
 5 minutes
 All data are based on NOAA/CMDL scale. Calibration gas: SF6 in natural air. Calibrations are carried out every 15 minutes using working standard tanks, which have been calibrated to a group of 6 NOAA station standards which envelope the atmospheric concentrations of SF6
 Processing of GC Data
With a software, called GC-Organizer, written by the team of I.Levin at University of Heidelberg the measured 5 min raw data are visually controlled in respect to outliers and the standard deviation during measurement of the standards. Outliers are removed with this graphical tool. After this pre-check 30 min atmospheric concentrations and standard deviation of CO2, CH4, SF6 and N2O are calculated with the same software program.
Afterwards these 30 min data are imported with a self written software program, called Dafit (Description see: www.gawstat.de).
The 30 min data are screened graphically. For a second validation, episodes of local pollution, also power failures, Instrument repairs etc. can be flagged. The digital log-book and if required, trajectories and co correlation with simultaneously measured data are used in to verify the CO2, CH4, N2O and SF6 data.
Then from the flagged data for scientific purpose and export aggregation to 60min, 1day, 1month and 1year data is calculated in a standardized way for each, simultaneously also files with the WDCGG export format are produced in a standardized way to automate the workflow.
 [Hourly] Mean Processing for the GC-data CO2, CH4, N2O and SF6
The data acquisition system provides one value every five minutes raw data. Zero/calibration factors and data protocols are used to convert raw data into calibrated data. Invalid data caused by local impact, malfunction or other effects are detected by comparison/ correlation with other trace substances and meteorological data and with information from the station logbook and then are rejected. 30 min mean values are generated by calculating the arithmetic mean of the remaining data.
For reporting to WDCGG hourly mean values are calculated from these half hourly data.
 [Daily] Mean Processing for the GC-data CO2, CH4, N2O and SF6
Daily mean values are generated by calculating the arithmetic mean of the available hourly data within the respective day.
nvalue refers to the number of available hourly averages within the respective day.
 [Monthly] Mean Processing for the GC-data CO2, CH4, N2O and SF6
Monthly mean values are generated by calculating the arithmetic mean of the available daily data within the respective month.
nvalue refers to the number of available daily averages within the respective month.
 1: Valid
3: Not Valid
 Valid (background): 1
 Invalid: 3
 Operational/Reporting
 Gas chromatography followed by electron capture detection
Especially designed GC unit, project of university Heidelberg for Umweltbundesamt
 Wind direction: 1
 Wind speed: 1
 Relative humidity: 1
 Precipitation amount: 0
 Air pressure: 1
 Air temperature: 1
 Dew point temperature: 1
 Sea water temperature: 0
 Sea surface water temperature: 0
 Sea water salinity: 0
 Sea surface water salinity: 0
Meteorological data may remain as first provided, even when greenhouse gas data are updated.
 
No DOI available

 Related information

Format Text (WDCGG Data Format Table, WDCGG Meteorological Data Format Table), NetCDF
Relation List (Is Part Of) All SF6 data contributed to WDCGG by GAW stations and mobiles by 2022-09-05
All SF6 data contributed to WDCGG by GAW stations and mobiles by 2021-08-16
All SF6 data contributed to WDCGG by GAW stations and mobiles by 2020-09-28
All SF6 data contributed to WDCGG by GAW stations and mobiles by 2019-09-19
All SF6 data contributed to WDCGG by GAW stations and mobiles by 2018-10-23
Geolocation Point
Latitude (north: +; south: -) 47.4165
Longitude (east: +; west: -) 10.97964

 GAW Data Policy

"For Scientific purposes, access to these data is unlimited and provided without charge. By their use you accept that an offer of co-authorship will be made through personal contact with the data providers or owners whenever substantial use is made of their data. In all cases, an acknowledgement must be made to the data providers or owners and to the data centre when these data are used within a publication."

 Citation format

This format is an example of the WDCGG standard citation.
Please follow the citation format which the data providers or owners indicate.
Cedric Couret (UBAG), Atmospheric SF6 at Zugspitze-Schneefernerhaus by German Environment Agency , dataset published as SF6_ZSF_ surface-insitu_UBAG_data1 at WDCGG, ver. 2022-05-03-0856 (Reference date*: YYYY/MM/DD)

* As the reference date, please indicate the date you downloaded the files.

 Reference(s)

1  + an own SOP for measurements of greenhouse gases with gas chromatography
2  1) "Qualitatssicherungs-Handbuch des UBA-Messnetzes", UBA Texte 28/04, (Handbook for quality assurance for the measurement network for the Federal Environmental Agency, Germany), Dr.Klaus Nienerowski, Umweltbundesamt, Berlin, Juni 2004,
http://www.umweltbundesamt.de/luft/luftmessnetze/ubamessnetz.htm

2) Handbook for the data processing software called Dafit can be downloaded from www.gawstat.de





2) www.gawstat.de