Methane and nitrous oxide dissolved gas concentrations from rivers in the North American Arctic (2017–2019) ...

• Main Authors: Manning, Cara C M, Zheng, Zhiyin, Fenwick, Lindsay, McCulloch, Ross D, Damm, Ellen, Izett, Robert W, Williams, William J, Zimmermann, Sarah, Vagle, Svein, Tortell, Philippe Daniel
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Arctic; Methane; nitrous oxide; ocean; rivers; Event label; Station label; River; Location; DATE/TIME; LATITUDE; LONGITUDE; Methane, dissolved; Methane, standard deviation; Nitrous oxide, dissolved; Nitrous oxide, standard deviation; Temperature, water; Conductivity, electrical; δ13C, methane, dissolved; Water pump; Calculated; Gas chromatography - Mass spectrometry GC-MS; Oakton Con5; Thermo Trace GC coupled to ThermoFinnigan DELTAplus XP GC-C-IRMS; AMD17_2; AMD18_3; AMD19_2; CCGS Amundsen; Global marine biogeochemical cycles of trace elements and their isotopes GEOTRACES; International Polar Year 2007-2008 IPY; Marine Biogeochemistry and Surface Exchange of Climate Active Gases ArcticNet; Arctic Archipelago; arctic methane; ArcticNet; Canadian Arctic Archipelago; International Polar Year; IPY
• Online Access: https://dx.doi.org/10.1594/pangaea.941200; https://doi.pangaea.de/10.1594/PANGAEA.941200

This dataset contains methane and nitrous oxide dissolved gas concentration and dissolved methane carbon isotope data from rivers in the Canadian Arctic Archipelago region collected between 2017-2019. River samples were collected during CCGS Amundsen cruises using a helicopter to travel to the rivers. At each river site, river water was pumped through tubing using a peristaltic pump. Water was collected into glass serum bottles and allowed to overflow three times before preserving with mercuric chloride and sealing with butyl rubber stoppers and aluminum crimp seals. Gas concentrations were determined using a purge and trap system coupled to a gas chromatograph/mass spectrometer, following the method of Capelle et al. (2015). For methane ????13C, samples (one sample per event) were pre-concentrated through a purge and trap system (Finnigan PreCon Trace Gas Pre-Concentrator) and measured with a Finnigan Delta XP Plus mass spectrometer following the method of Damm et al. (2015). ...