de.pangaea.dataset993007 und dataset PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact 2026-03-30T08:49:55Z https://doi.pangaea.de/10.1594/PANGAEA.993007 2026-03-30T08:49:53 publication Hatton, Jade Elizabeth

j.e.hatton@bristol.ac.uk

https://orcid.org/0000-0002-9408-7981 information author Stehrer-Polášková, Anna

anna.polaskova@natur.cuni.cz

author Pika, Philip

pikap@natur.cuni.cz

author Garnett, Mark H https://orcid.org/0000-0001-6486-2126 information author Klimova, Petra

petra.vinsova@natur.cuni.cz

author Wentzel, Lia

costapil@natur.cuni.cz

author Jakub, Zarsky

jakub.dan.zarsky@gmail.com

author Arndt, Sandra https://orcid.org/0000-0002-0235-8124 information author Alun, Hubbard

alun.hubbard@oulu.fi

author Jakub, Trubac

jakub.trubac@gmail.com

author Yde, Jacob author Jon, Hawkings

hawkings@sas.upenn.edu

author Eva, Doting

eva.doting@nina.no

author Jack, Murphy

jgmurphy@sas.upenn.edu

author Guillaume, Lamarche-Gagnon

guillaume.lamarche-gagnon@uit.no

author Wadham, Jemma author Sarah, Sapper

s.sapper@iaea.org

author Christiansen, Jesper Riis

jrc@ign.ku.dk

https://orcid.org/0000-0002-3277-0734 information author Christian, Jorgensen

cjj@ecos.au.dk

author Stibal, Marek https://orcid.org/0000-0002-9998-5086 information author PANGAEA

info@pangaea.de

https://www.pangaea.de/ information publisher tableDigital A field sampling campaign spanning the entire western margin of the Greenland Ice Sheet was conducted in the summer melt seasons of 2021, 2022, and 2023, to measure release of dissolved methane from meltwater streams draining the subglacial environment of the Greenland Ice Sheet. The campaign was designed to assess whether subglacial methane export is ubitiqous from the GrIS, and the source and age of this methane released. Twenty-six rivers draining from the GrIS were sampled in the summers of 2021, 2022 and 2023 along the west coast of Greenland, forming a north to south transect from Qaanaaq to Narsarsuaq. We split these rivers into regional areas of northwest (NW), central west (CW), and southwest (SW). Most of these rivers drained directly from the subglacial environment, whether via an upwelling (proglacial spring) or subglacial portal. Samples were taken as close to the upwelling or portal as possible, to get the most representative view of the subglacial system, with limited off-gassing or dilution effects from supraglacial meltwaters. Basic stream geochemistry (pH, EC, O2) was measured in the field using a WTW 3430 multimeter. Dissolved CH4 was extracted (Garnett et al., 2016) into a nitrogen headspace, via 5L water samples were collected into a 10L accordion water carrier, 1-2L of pure N2 headspace was added and the water carrier was shaken for 3 minutes to equilibrate the CH4. The headspace CH4 concentrations were measured directly in the field using a using a micro portable greenhouse gas analyser (MGGA, ABB GLA1313 Series, using Off-Axis Integrated Cavity Output Spectroscopy (OA-ICOS) technology). The headspace with extracted sample was stored in a pre-evacuated 15L Silonite™ cannisters with TrueSeal Valve™ (Entech Instruments) or pre-evacuated 150ml glass serum vials (Wheaton™) using a 150 ml glass syringe and sealed with 15 mm crimped (13mm) chlorobutyl rubber stoppers (Bellco Glass) ahead of radio- and stable- carbon isotope analysis, respectively. We provide measured and 'corrected' radiocarbon ages of dissolved methane. We recognise that the CH4 extracted and measured in each water sample is a homogenised sample, likely containing subglacially produced CH4 combined with some modern CH4, when supraglacial water is routed through moulins to the bed and through the subglacial system. Therefore, it is likely that our water samples encompass some portion of modern-day CH4, and accounting for this provides a more accurate assessment of the 14C-age of the subglacial carbon source for methanogenesis. We used a simple mass balance approach to consider what proportion of our sampled CH4 is potentially modern-day atmospheric, based on the measured atmospheric CH4 concentration measured during a survey of the supraglacial area inland. completed dissolved methane glacial melt Glacial release Greenland ice sheet Holocene climate Methane Radiocarbon AMS dating stable carbon isotopes theme 1995-01-01 creation PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact copyright restricted copyright CC-BY-4.0: Creative Commons Attribution 4.0 International (License comes into effect after moratorium ends) textTable und geoscientificInformation -69.019667 -45.11658 61.14541 77.719667 2021-08-05T15:30:00 2023-07-15T18:00:00 Event label thematicClassification DATE/TIME thematicClassification Date/Time local thematicClassification LATITUDE thematicClassification LONGITUDE thematicClassification pH thematicClassification Portable multimeter, Hach, HQ4300 Conductivity physicalMeasurement Portable multimeter, Hach, HQ4300 mS/cm mS/cm Oxygen physicalMeasurement Portable multimeter, Hach, HQ4300 mg/l mg/l Methane, dissolved physicalMeasurement Off-axis integrated cavity output spectroscopy (OA-ICOS) gas analyzer; Average calculated nmol/l nmol/l Methane, dissolved physicalMeasurement Off-axis integrated cavity output spectroscopy (OA-ICOS) gas analyzer; Minimum nmol/l nmol/l Methane, dissolved physicalMeasurement Off-axis integrated cavity output spectroscopy (OA-ICOS) gas analyzer; Maximum nmol/l nmol/l Activity of radiocarbon in percent of modern carbon physicalMeasurement Age, 14C AMS; Uncorrected 14C-CH4 pMC pMC Activity of radiocarbon in percent of modern carbon, standard deviation physicalMeasurement Age, 14C calibrated, OxCal 4.4 and IntCal20; Uncorrected 14C-CH4 ± ± Age, dated, range, minimum physicalMeasurement Age, 14C calibrated, IntCal20 (Reimer et al. 2020); Uncorrected 14C-CH4 ka ka Age, dated, range, maximum physicalMeasurement Age, 14C calibrated, IntCal20 (Reimer et al. 2020); Uncorrected 14C-CH4 ka ka Activity of radiocarbon in percent of modern carbon physicalMeasurement Age, 14C AMS; Atmospheric corrected pMC pMC Age, dated, range, minimum physicalMeasurement Age, 14C calibrated, IntCal20 (Reimer et al. 2020); Atmospheric corrected ka ka Age, dated, range, maximum physicalMeasurement Age, 14C calibrated, IntCal20 (Reimer et al. 2020); Atmospheric corrected ka ka δ13C, methane, dissolved physicalMeasurement GasBench+PreCon trace gas concentration system (ThermoFinnigan) coupled to a DELTA V plus IRMS ‰ PDB ‰ PDB δ Deuterium, methane physicalMeasurement GasBench+PreCon trace gas concentration system (ThermoFinnigan) coupled to a DELTA V plus IRMS ‰ SMOW ‰ SMOW text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.993007?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: MARCH4G_2021_CW4a_Chem * LATITUDE: 69.329768 * LONGITUDE: -50.244147 * DATE/TIME: 2021-08-31T11:20:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2021-08-31T11:20:00 EVENT LABEL: MARCH4G_2021_CW4a_GHG-a * LATITUDE: 69.329768 * LONGITUDE: -50.244147 * DATE/TIME: 2021-08-30T16:03:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-08-30T16:03:00 EVENT LABEL: MARCH4G_2021_CW4a_GHG-b * LATITUDE: 69.329768 * LONGITUDE: -50.244147 * DATE/TIME: 2021-08-31T11:20:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-08-31T11:20:00 EVENT LABEL: MARCH4G_2021_CW4a_GHG-c * LATITUDE: 69.329768 * LONGITUDE: -50.244147 * DATE/TIME: 2021-09-02T08:43:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-09-02T08:43:00 EVENT LABEL: MARCH4G_2021_CW5_Chem * LATITUDE: 69.249883 * LONGITUDE: -49.879465 * DATE/TIME: 2021-08-30T17:00:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2021-08-30T17:00:00 EVENT LABEL: MARCH4G_2021_CW5_GHG * LATITUDE: 69.249883 * LONGITUDE: -49.879465 * DATE/TIME: 2021-08-30T17:00:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-08-30T17:00:00 EVENT LABEL: MARCH4G_2021_NW1_Chem * LATITUDE: 77.719667 * LONGITUDE: -69.019667 * DATE/TIME: 2021-08-15T14:00:00 * LOCATION: Qaanaaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2021-08-15T14:00:00 EVENT LABEL: MARCH4G_2021_NW1_GHG * LATITUDE: 77.719667 * LONGITUDE: -69.019667 * DATE/TIME: 2021-08-13T15:20:00 * LOCATION: Qaanaaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-08-13T15:20:00 EVENT LABEL: MARCH4G_2021_NW2_Chem * DATE/TIME: 2021-08-14T14:30:00 * LOCATION: Qaanaaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2021-08-14T14:30:00 EVENT LABEL: MARCH4G_2021_NW2_GHG * LATITUDE: 77.715250 * LONGITUDE: -68.916770 * DATE/TIME: 2021-08-14T14:30:00 * LOCATION: Qaanaaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-08-14T14:30:00 EVENT LABEL: MARCH4G_2021_SW3a_Chem_a * LATITUDE: 67.180635 * LONGITUDE: -50.336008 * DATE/TIME: 2021-09-06T15:23:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2021-09-06T15:23:00 EVENT LABEL: MARCH4G_2021_SW3a_GHG_a * LATITUDE: 67.180635 * LONGITUDE: -50.336008 * DATE/TIME: 2021-09-06T15:23:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-09-06T15:23:00 EVENT LABEL: MARCH4G_2021_SW3a_GHG_b * LATITUDE: 67.180635 * LONGITUDE: -50.336008 * DATE/TIME: 2021-09-07T14:14:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-09-07T14:14:00 EVENT LABEL: MARCH4G_2021_SW3a_GHG_c * LATITUDE: 67.180635 * LONGITUDE: -50.336008 * DATE/TIME: 2021-09-08T11:06:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-09-08T11:06:00 EVENT LABEL: MARCH4G_2021_SW3a_GHG_d * LATITUDE: 67.180635 * LONGITUDE: -50.336008 * DATE/TIME: 2021-09-09T11:40:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-09-09T11:40:00 EVENT LABEL: MARCH4G_2021_SW4_14C * LATITUDE: 67.159000 * LONGITUDE: -50.129306 * DATE/TIME: 2021-09-04T17:00:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Silonite canister 2021-09-04T17:00:00 EVENT LABEL: MARCH4G_2021_SW4_Chem * LATITUDE: 67.159000 * LONGITUDE: -50.129306 * DATE/TIME: 2021-09-04T17:00:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2021-09-04T17:00:00 EVENT LABEL: MARCH4G_2021_SW4_GHG * LATITUDE: 67.159000 * LONGITUDE: -50.129306 * DATE/TIME: 2021-09-04T17:00:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-09-04T17:00:00 EVENT LABEL: MARCH4G_2021_SW5a_Chem * LATITUDE: 67.159680 * LONGITUDE: -50.050300 * DATE/TIME: 2021-08-05T13:30:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2021-08-05T13:30:00 EVENT LABEL: MARCH4G_2021_SW5a_GHG * LATITUDE: 67.159680 * LONGITUDE: -50.050300 * DATE/TIME: 2021-08-05T13:30:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-08-05T13:30:00 EVENT LABEL: MARCH4G_2021_SW5b_14C * LATITUDE: 67.159680 * LONGITUDE: -50.050300 * DATE/TIME: 2021-08-07T12:30:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Silonite canister 2021-08-07T12:30:00 EVENT LABEL: MARCH4G_2021_SW5b_Chem * LATITUDE: 67.159680 * LONGITUDE: -50.050300 * DATE/TIME: 2021-08-07T12:30:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2021-08-07T12:30:00 EVENT LABEL: MARCH4G_2021_SW5b_GHG * LATITUDE: 67.159680 * LONGITUDE: -50.050300 * DATE/TIME: 2021-08-07T12:30:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-08-07T12:30:00 EVENT LABEL: MARCH4G_2021_SW5c_Chem * LATITUDE: 67.159680 * LONGITUDE: -50.050300 * DATE/TIME: 2021-09-03T16:55:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2021-09-03T16:55:00 EVENT LABEL: MARCH4G_2021_SW5c_GHG * LATITUDE: 67.159680 * LONGITUDE: -50.050300 * DATE/TIME: 2021-09-03T16:55:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-09-03T16:55:00 EVENT LABEL: MARCH4G_2021_SW6a_Chem * LATITUDE: 67.064807 * LONGITUDE: -50.161167 * DATE/TIME: 2021-09-11T15:00:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2021-09-11T15:00:00 EVENT LABEL: MARCH4G_2021_SW6a_GHG * LATITUDE: 67.064807 * LONGITUDE: -50.161167 * DATE/TIME: 2021-09-11T15:00:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-09-11T15:00:00 EVENT LABEL: MARCH4G_2021_SW7_GHG-a * LATITUDE: 67.056260 * LONGITUDE: -50.160090 * DATE/TIME: 2021-09-06T19:12:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-09-06T19:12:00 EVENT LABEL: MARCH4G_2021_SW7_GHG-b * LATITUDE: 67.056260 * LONGITUDE: -50.160090 * DATE/TIME: 2021-09-07T14:11:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-09-07T14:11:00 EVENT LABEL: MARCH4G_2021_SW7_GHG-c * LATITUDE: 67.056260 * LONGITUDE: -50.160090 * DATE/TIME: 2021-09-09T15:54:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2021 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2021-09-09T15:54:00 EVENT LABEL: MARCH4G_2022_CW1_Chem * LATITUDE: 69.776660 * LONGITUDE: -50.326110 * DATE/TIME: 2022-09-05T09:00:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-05T09:00:00 EVENT LABEL: MARCH4G_2022_CW1_GHG * LATITUDE: 69.776660 * LONGITUDE: -50.326110 * DATE/TIME: 2022-09-05T09:00:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-05T09:00:00 EVENT LABEL: MARCH4G_2022_CW2_Chem * LATITUDE: 69.787500 * LONGITUDE: -50.216110 * DATE/TIME: 2022-09-05T09:30:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-05T09:30:00 EVENT LABEL: MARCH4G_2022_CW2_GHG * LATITUDE: 69.787500 * LONGITUDE: -50.216110 * DATE/TIME: 2022-09-05T09:30:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-05T09:30:00 EVENT LABEL: MARCH4G_2022_CW3_Chem * LATITUDE: 69.577500 * LONGITUDE: -50.394160 * DATE/TIME: 2022-09-05T10:15:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-05T10:15:00 EVENT LABEL: MARCH4G_2022_CW3_GHG * LATITUDE: 69.577500 * LONGITUDE: -50.394160 * DATE/TIME: 2022-09-05T10:15:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-05T10:15:00 EVENT LABEL: MARCH4G_2022_CW4c_Chem * LATITUDE: 69.536900 * LONGITUDE: -50.413800 * DATE/TIME: 2022-09-05T10:50:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-05T10:50:00 EVENT LABEL: MARCH4G_2022_CW4c_GHG * LATITUDE: 69.536900 * LONGITUDE: -50.413800 * DATE/TIME: 2022-09-05T10:50:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-05T10:50:00 EVENT LABEL: MARCH4G_2022_CW6_Chem * LATITUDE: 68.886380 * LONGITUDE: -50.467500 * DATE/TIME: 2022-09-05T12:00:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-05T12:00:00 EVENT LABEL: MARCH4G_2022_CW6_GHG * LATITUDE: 68.886380 * LONGITUDE: -50.467500 * DATE/TIME: 2022-09-05T12:00:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-05T12:00:00 EVENT LABEL: MARCH4G_2022_CW7_Chem * LATITUDE: 68.779720 * LONGITUDE: -50.594170 * DATE/TIME: 2022-09-05T12:35:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-05T12:35:00 EVENT LABEL: MARCH4G_2022_CW7_GHG * LATITUDE: 68.779720 * LONGITUDE: -50.594170 * DATE/TIME: 2022-09-05T12:35:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-05T12:35:00 EVENT LABEL: MARCH4G_2022_NW3_14C * LATITUDE: 72.657130 * LONGITUDE: -54.029200 * DATE/TIME: 2022-07-22T12:30:00 * LOCATION: Upernavik, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Silonite canister 2022-07-22T12:30:00 EVENT LABEL: MARCH4G_2022_NW3_Chem * LATITUDE: 72.657130 * LONGITUDE: -54.029200 * DATE/TIME: 2022-07-22T12:30:00 * LOCATION: Upernavik, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-07-22T12:30:00 EVENT LABEL: MARCH4G_2022_NW3_GHG_a * LATITUDE: 72.657130 * LONGITUDE: -54.029200 * DATE/TIME: 2022-07-22T12:30:00 * LOCATION: Upernavik, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-07-22T12:30:00 EVENT LABEL: MARCH4G_2022_NW3_GHG_b * LATITUDE: 72.657130 * LONGITUDE: -54.029200 * DATE/TIME: 2022-07-23T09:00:00 * LOCATION: Upernavik, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-07-23T09:00:00 EVENT LABEL: MARCH4G_2022_NW4_14C * LATITUDE: 72.358030 * LONGITUDE: -53.512200 * DATE/TIME: 2022-07-20T20:30:00 * LOCATION: Upernavik, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Silonite canister 2022-07-20T20:30:00 EVENT LABEL: MARCH4G_2022_NW4_Chem * LATITUDE: 72.358030 * LONGITUDE: -53.512200 * DATE/TIME: 2022-07-20T20:30:00 * LOCATION: Upernavik, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-07-20T20:30:00 EVENT LABEL: MARCH4G_2022_NW4_GHG_a * LATITUDE: 72.358030 * LONGITUDE: -53.512200 * DATE/TIME: 2022-07-20T20:30:00 * LOCATION: Upernavik, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-07-20T20:30:00 EVENT LABEL: MARCH4G_2022_NW4_GHG_b * LATITUDE: 72.358030 * LONGITUDE: -53.512200 * DATE/TIME: 2022-07-21T00:49:00 * LOCATION: Upernavik, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-07-21T00:49:00 EVENT LABEL: MARCH4G_2022_SW1_Chem * LATITUDE: 68.354160 * LONGITUDE: -50.466390 * DATE/TIME: 2022-09-08T16:35:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-08T16:35:00 EVENT LABEL: MARCH4G_2022_SW1_GHG * LATITUDE: 68.354160 * LONGITUDE: -50.466390 * DATE/TIME: 2022-09-08T16:35:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-08T16:35:00 EVENT LABEL: MARCH4G_2022_SW2_Chem * LATITUDE: 67.602220 * LONGITUDE: -50.126940 * DATE/TIME: 2022-09-08T15:45:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-08T15:45:00 EVENT LABEL: MARCH4G_2022_SW2_GHG * LATITUDE: 67.602220 * LONGITUDE: -50.126940 * DATE/TIME: 2022-09-08T15:45:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-08T15:45:00 EVENT LABEL: MARCH4G_2022_SW3a_Chem * LATITUDE: 67.180635 * LONGITUDE: -50.336008 * DATE/TIME: 2022-09-08T15:15:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-08T15:15:00 EVENT LABEL: MARCH4G_2022_SW3a_GHG * LATITUDE: 67.180635 * LONGITUDE: -50.336008 * DATE/TIME: 2022-09-08T15:15:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-08T15:15:00 EVENT LABEL: MARCH4G_2022_SW3b_14C * LATITUDE: 67.180300 * LONGITUDE: -50.334300 * DATE/TIME: 2022-07-10T11:45:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Silonite canister 2022-07-10T11:45:00 EVENT LABEL: MARCH4G_2022_SW3b_Chem * LATITUDE: 67.180300 * LONGITUDE: -50.334300 * DATE/TIME: 2022-07-10T11:45:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-07-10T11:45:00 EVENT LABEL: MARCH4G_2022_SW3b_GHG * LATITUDE: 67.180300 * LONGITUDE: -50.334300 * DATE/TIME: 2022-07-10T11:45:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-07-10T11:45:00 EVENT LABEL: MARCH4G_2022_SW3c_GHG-a * LATITUDE: 67.177710 * LONGITUDE: -50.353300 * DATE/TIME: 2022-07-09T23:11:37 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-07-09T23:11:37 EVENT LABEL: MARCH4G_2022_SW3c_GHG-b * LATITUDE: 67.177710 * LONGITUDE: -50.353300 * DATE/TIME: 2022-07-11T14:55:06 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-07-11T14:55:06 EVENT LABEL: MARCH4G_2022_SW3d_Chem * LATITUDE: 67.180300 * LONGITUDE: -50.334300 * DATE/TIME: 2022-08-15T14:00:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-08-15T14:00:00 EVENT LABEL: MARCH4G_2022_SW3d_GHG * LATITUDE: 67.180300 * LONGITUDE: -50.334300 * DATE/TIME: 2022-08-15T14:00:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-08-15T14:00:00 EVENT LABEL: MARCH4G_2022_SW3e_Chem * LATITUDE: 67.406940 * LONGITUDE: -50.448000 * DATE/TIME: 2022-09-08T15:15:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-08T15:15:00 EVENT LABEL: MARCH4G_2022_SW3e_GHG * LATITUDE: 67.406940 * LONGITUDE: -50.448000 * DATE/TIME: 2022-09-08T15:15:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-08T15:15:00 EVENT LABEL: MARCH4G_2022_SW5d_Chem * LATITUDE: 67.159680 * LONGITUDE: -50.050300 * DATE/TIME: 2022-07-13T14:30:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-07-13T14:30:00 EVENT LABEL: MARCH4G_2022_SW5d_GHG * LATITUDE: 67.159680 * LONGITUDE: -50.050300 * DATE/TIME: 2022-07-13T14:30:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-07-13T14:30:00 EVENT LABEL: MARCH4G_2022_SW6c_Chem * LATITUDE: 67.274720 * LONGITUDE: -50.245000 * DATE/TIME: 2022-09-07T11:50:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-07T11:50:00 EVENT LABEL: MARCH4G_2022_SW6c_GHG * LATITUDE: 67.274720 * LONGITUDE: -50.245000 * DATE/TIME: 2022-09-07T11:50:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-07T11:50:00 EVENT LABEL: MARCH4G_2022_SW8_Chem * LATITUDE: 67.191000 * LONGITUDE: -50.219720 * DATE/TIME: 2022-09-08T10:20:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-08T10:20:00 EVENT LABEL: MARCH4G_2022_SW8_GHG * LATITUDE: 67.191000 * LONGITUDE: -50.219720 * DATE/TIME: 2022-09-08T10:20:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-08T10:20:00 EVENT LABEL: MARCH4G_2022_SW9_Chem * LATITUDE: 66.730270 * LONGITUDE: -50.026380 * DATE/TIME: 2022-09-08T10:55:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-08T10:55:00 EVENT LABEL: MARCH4G_2022_SW9_GHG * LATITUDE: 66.730270 * LONGITUDE: -50.026380 * DATE/TIME: 2022-09-08T10:55:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-08T10:55:00 EVENT LABEL: MARCH4G_2022_SW10_Chem * LATITUDE: 66.562500 * LONGITUDE: -49.848050 * DATE/TIME: 2022-09-08T11:35:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-08T11:35:00 EVENT LABEL: MARCH4G_2022_SW10_GHG * LATITUDE: 66.562500 * LONGITUDE: -49.848050 * DATE/TIME: 2022-09-08T11:35:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-08T11:35:00 EVENT LABEL: MARCH4G_2022_SW11_Chem * LATITUDE: 65.894720 * LONGITUDE: -50.733000 * DATE/TIME: 2022-09-08T13:10:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-09-08T13:10:00 EVENT LABEL: MARCH4G_2022_SW11_GHG * LATITUDE: 65.894720 * LONGITUDE: -50.733000 * DATE/TIME: 2022-09-08T13:10:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-09-08T13:10:00 EVENT LABEL: MARCH4G_2022_SW12_Chem * LATITUDE: 65.198990 * LONGITUDE: -50.673800 * DATE/TIME: 2022-07-31T23:50:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-07-31T23:50:00 EVENT LABEL: MARCH4G_2022_SW12_GHG-a * LATITUDE: 65.198990 * LONGITUDE: -50.673800 * DATE/TIME: 2022-07-31T23:50:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-07-31T23:50:00 EVENT LABEL: MARCH4G_2022_SW12_GHG-b * LATITUDE: 65.198990 * LONGITUDE: -50.673800 * DATE/TIME: 2022-08-01T11:35:10 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-08-01T11:35:10 EVENT LABEL: MARCH4G_2022_SW12_GHG-c * LATITUDE: 65.198990 * LONGITUDE: -50.673800 * DATE/TIME: 2022-08-01T14:00:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-08-01T14:00:00 EVENT LABEL: MARCH4G_2022_SW13_Chem * LATITUDE: 61.145410 * LONGITUDE: -46.128200 * DATE/TIME: 2022-08-04T17:00:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-08-04T17:00:00 EVENT LABEL: MARCH4G_2022_SW13_GHG * LATITUDE: 61.145410 * LONGITUDE: -46.128200 * DATE/TIME: 2022-08-04T17:00:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-08-04T17:00:00 EVENT LABEL: MARCH4G_2022_SW14a_Chem * LATITUDE: 61.427300 * LONGITUDE: -45.131740 * DATE/TIME: 2022-08-07T18:10:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-08-07T18:10:00 EVENT LABEL: MARCH4G_2022_SW14a_GHG * LATITUDE: 61.427300 * LONGITUDE: -45.131740 * DATE/TIME: 2022-08-07T18:10:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-08-07T18:10:00 EVENT LABEL: MARCH4G_2022_SW14b_GHG * LATITUDE: 61.428600 * LONGITUDE: -45.134490 * DATE/TIME: 2022-08-08T19:00:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-08-08T19:00:00 EVENT LABEL: MARCH4G_2022_SW15_Chem * LATITUDE: 61.423860 * LONGITUDE: -45.116580 * DATE/TIME: 2022-08-08T15:00:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2022-08-08T15:00:00 EVENT LABEL: MARCH4G_2022_SW15_GHG * LATITUDE: 61.423860 * LONGITUDE: -45.116580 * DATE/TIME: 2022-08-08T15:00:00 * LOCATION: Narsarsuaq, Greenland * CAMPAIGN: MARCH4G_2022 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2022-08-08T15:00:00 EVENT LABEL: MARCH4G_2023_CW4b_Chem * LATITUDE: 69.336130 * LONGITUDE: -50.234640 * DATE/TIME: 2023-07-15T16:00:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2023 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2023-07-15T16:00:00 EVENT LABEL: MARCH4G_2023_CW4b_GHG * LATITUDE: 69.336130 * LONGITUDE: -50.234640 * DATE/TIME: 2023-07-15T16:00:00 * LOCATION: Ilulissat, Greenland * CAMPAIGN: MARCH4G_2023 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2023-07-15T16:00:00 EVENT LABEL: MARCH4G_2023_SW6b_14C * LATITUDE: 67.064800 * LONGITUDE: -50.160900 * DATE/TIME: 2023-07-09T18:20:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2023 * METHOD/DEVICE: Silonite canister 2023-07-09T18:20:00 EVENT LABEL: MARCH4G_2023_SW6b_Chem * LATITUDE: 67.064800 * LONGITUDE: -50.160900 * DATE/TIME: 2023-07-09T18:20:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2023 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2023-07-09T18:20:00 EVENT LABEL: MARCH4G_2023_SW6b_GHG * LATITUDE: 67.064800 * LONGITUDE: -50.160900 * DATE/TIME: 2023-07-09T18:20:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2023 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2023-07-09T18:20:00 EVENT LABEL: MARCH4G_2023_SW7_14C * LATITUDE: 67.056260 * LONGITUDE: -50.160090 * DATE/TIME: 2023-07-10T15:34:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2023 * METHOD/DEVICE: Silonite canister 2023-07-10T15:34:00 EVENT LABEL: MARCH4G_2023_SW7_Chem * LATITUDE: 67.056260 * LONGITUDE: -50.160090 * DATE/TIME: 2023-07-10T15:34:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2023 * METHOD/DEVICE: Portable 2-channel multimeter, Hach, HQ40D 2023-07-10T15:34:00 EVENT LABEL: MARCH4G_2023_SW7_GHG-a * LATITUDE: 67.056260 * LONGITUDE: -50.160090 * DATE/TIME: 2023-07-10T15:34:00 * LOCATION: Kangerlussuaq, Greenland * CAMPAIGN: MARCH4G_2023 * METHOD/DEVICE: Microportable Greenhouse Gas Analyzer 2023-07-10T15:34:00 Related to 2016-01-01 publication https://doi.org/10.1002/eco.1617 Garnett, Mark H https://orcid.org/0000-0001-6486-2126 information author Gulliver, Pauline

Pauline.Gulliver@glasgow.ac.uk

author Billett, Michael F author documentDigital Ecohydrology 9(1) 113-121 Related to Hatton, Jade Elizabeth

j.e.hatton@bristol.ac.uk

https://orcid.org/0000-0002-9408-7981 information author et al. author documentHardcopy Nature Geoscience Related to 2013-01-01 publication https://doi.org/10.1002/rcm.6549 Yarnes, Chris author documentDigital Rapid Communications in Mass Spectrometry 27(9) 1036-1044