Data

CSIRO GASLAB - CH4 (Methane) Analysis datasets - Global Atmospheric Sampling Laboratory - Flask Sampling Network

Australian Ocean Data Network
CSIRO O&A, Information & Data Centre (Point of contact) Krummel, Paul (Point of contact)
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/0c918e59-9bdd-44d7-806f-43067c3df8ee&rft.title=CSIRO GASLAB - CH4 (Methane) Analysis datasets - Global Atmospheric Sampling Laboratory - Flask Sampling Network&rft.identifier=Anzlic Identifier: ANZCW0306008380&rft.publisher=Australian Ocean Data Network&rft.description=The CSIRO archive of Global Atmospheric Sampling Laboratory (GASLAB) Flask Sampling Network archive for the atmospheric trace gas methane (CH4) concentrations. GASLAB principally analyzes air samples that have been captured at eleven fixed geographic sites and one moving (aircraft over bass strait and Cape Grim), but also includes other sites at various locations globally on a less regular or as needed basis. The flask air sample is analyzed for the 5 atmospheric trace gases Methane (CH4), Carbon Dioxide (CO2), Carbon Monoxide (CO), Hydrogen (H2) and N2O (Nitrous Oxide). Data about the relative concentrations of these are particularly important for global warming studies as CO2 and CH4 are the two most effective anthropogenic greenhouse gases; CO and H2 influencing concentrations of the hydroxyl radical (OH), thereby affecting the main sink for atmospheric CH4. H2 is produced in a sequence of reactions following the reaction of OH with CH4. Measurements of CH4 concentrations are made through the use of 3 Carle gas chromatographs with flame ionisation detection (FID), Carle-1 (C1), Carle-2 (C2) and Carle-3 (C3). There are 6 differant types of flask that are used to store and transport air samples from site and in the labratory:(i) glass 0.5 litre (G050), (ii) glass 5.0 litre (G500), (iii) glass 0.8 litre (G080), (iv) electropolished stainless steel 1.6 litre Sirocans (S160), (v) glass 2.0 litre, 1 stopcock (F, FF, FA, FE, EP, ALT), (vi) glass 2.0 litre, 2 stopcocks(“M1”, “S”, “P2”, “TEMP”). Files containing a single species value for each sample are denoted by a filename of the form (XXX_XXXX_event.XXX), for the geographically fixed sites data is also provided in the form of monthly means (e.g. XXX_XXXX_mm.XXX) with all files being in Ascii format.Progress Code: onGoingMaintenance and Update Frequency: continualStatement: Samples were analysed by gas chromatography with flame ionisation detection (FID). Data reported in the NOAA04 methane scale (Dlugokencky et al., 2005). Flask data are assigned flags to indicate whether they are classified as retained or rejected. Monthly means are calculated as the mean of daily values from a smooth curve fit to the data using the curve-fitting routines described by Thoning et al. (1989).&rft.creator=Anonymous&rft.date=2008&rft.coverage=westlimit=-180; southlimit=-90; eastlimit=180; northlimit=90&rft.coverage=westlimit=-180; southlimit=-90; eastlimit=180; northlimit=90&rft_rights=Available for CSIRO internal use, users are required to contact Paul Krummel, Paul Steele or Ray Langenfelds first.&rft_subject=climatologyMeteorologyAtmosphere&rft_subject=Earth Science | Atmosphere | Atmospheric Chemistry | Carbon And Hydrocarbon Compounds | Methane&rft_subject=Earth Science | Atmosphere | Atmospheric Chemistry | Trace Gases/Trace Species&rft_subject=Gas Chromatographs&rft_subject=Global / Oceans | World&rft_subject=Observational: Aspendale - GASLAB&rft.type=dataset&rft.language=English Access the data
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Brief description

The CSIRO archive of Global Atmospheric Sampling Laboratory (GASLAB) Flask Sampling Network archive for the atmospheric trace gas methane (CH4) concentrations. GASLAB principally analyzes air samples that have been captured at eleven fixed geographic sites and one moving (aircraft over bass strait and Cape Grim), but also includes other sites at various locations globally on a less regular or as needed basis. The flask air sample is analyzed for the 5 atmospheric trace gases Methane (CH4), Carbon Dioxide (CO2), Carbon Monoxide (CO), Hydrogen (H2) and N2O (Nitrous Oxide). Data about the relative concentrations of these are particularly important for global warming studies as CO2 and CH4 are the two most effective anthropogenic greenhouse gases; CO and H2 influencing concentrations of the hydroxyl radical (OH), thereby affecting the main sink for atmospheric CH4. H2 is produced in a sequence of reactions following the reaction of OH with CH4. Measurements of CH4 concentrations are made through the use of 3 Carle gas chromatographs with flame ionisation detection (FID), Carle-1 (C1), Carle-2 (C2) and Carle-3 (C3). There are 6 differant types of flask that are used to store and transport air samples from site and in the labratory:(i) glass 0.5 litre ("G050"), (ii) glass 5.0 litre ("G500"), (iii) glass 0.8 litre ("G080"), (iv) electropolished stainless steel 1.6 litre "Sirocans" ("S160"), (v) glass 2.0 litre, 1 stopcock ("F", "FF", "FA", "FE", "EP", "ALT"), (vi) glass 2.0 litre, 2 stopcocks(“M1”, “S”, “P2”, “TEMP”). Files containing a single species value for each sample are denoted by a filename of the form (XXX_XXXX_event.XXX), for the geographically fixed sites data is also provided in the form of monthly means (e.g. XXX_XXXX_mm.XXX) with all files being in Ascii format.

Lineage

Progress Code: onGoing
Maintenance and Update Frequency: continual
Statement: Samples were analysed by gas chromatography with flame ionisation detection (FID). Data reported in the NOAA04 methane scale (Dlugokencky et al., 2005). Flask data are assigned flags to indicate whether they are classified as retained or rejected. Monthly means are calculated as the mean of daily values from a smooth curve fit to the data using the curve-fitting routines described by Thoning et al. (1989).

Notes

Credit
CSIRO - Marine and Atmospheric Research (CMAR), Australian Bureau of Meteorology (BoM), Australian Antarctic Division (AAD), Australian Institute of Marine Science (AIMS), National Oceanic and Atmospheric Administration (NOAA), Environment Canada (EC).
Credit
Paul Krummel (CSIRO)
Credit
Paul Steele (CSIRO)
Credit
Ray Langenfelds(CSIRO).

Data time period: 1984-01

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text: westlimit=-180; southlimit=-90; eastlimit=180; northlimit=90

Subjects
Earth Science | Atmosphere | Atmospheric Chemistry | Carbon And Hydrocarbon Compounds | Methane | Earth Science | Atmosphere | Atmospheric Chemistry | Trace Gases/Trace Species | Gas Chromatographs | Global / Oceans | World | Observational: Aspendale - GASLAB | climatologyMeteorologyAtmosphere |

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Other Information
Externally accessible FTP location (Zip file) (Data Link)

local : ftp://gaspublic:gaspublic@ftp.dar.csiro.au/data/gaslab/

Link to CDIAC (Carbon Dioxide Information Analysis Center) homepage (Data Link)

uri : https://cdiac.ornl.gov/

Link to WDCGG (World Data Centre for Greenhouse Gases) homepage (Data Link)

uri : https://gaw.kishou.go.jp/wdcgg/

Identifiers
  • Local : Anzlic Identifier: ANZCW0306008380
  • Local : Marlin Record Number: 8380
  • global : 0c918e59-9bdd-44d7-806f-43067c3df8ee
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