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Verdugo, Josefa; Farías, Laura (2026): Dissolved methane concentrations in seawater during Lomrog III cruise, Arctic Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.993688

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Published: 2026-04-22DOI registered: 2026-05-21

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Abstract:
The concentration of methane (CH4), along with temperature and salinity, were measured in the ice- covered Arctic Ocean within the Eurasian Basin (Verdugo et al., 2016; doi:10.1016/j.dsr.2016.08.016). The transect was conducted across the Nansen-Gakkel Ridge, from the Nansen Basin to the Amundsen Basin, covering depths from the surface (10 m) down to 4300 m. All sampling stations, except for ST 12, were covered by sea ice. Water samples were collected with a CTD-rosette sampler equipped with 24 Niskin Bottles. Gas sampling was carried out directly from 12 L Niskin bottles. Triplicate water samples for CH4 analyses were taken in 20 mL glass vials and preserved with 50 µL of saturated HgCl2. The vials were then sealed with a butyl-rubber septum and an aluminum cap to prevent bubble formation and stored in darkness at room temperature until laboratory analysis. CH4 concentrations were analyzed by creating 5 mL of ultra-pure helium headspace, followed by equilibration in the vial, and then quantified with a gas chromatograph (GC). A Varian 3380 GC, equipped with flame ionization detector (FID) maintained at 250 °C, and a capillary column GS-Q operated at 30 °C was used for analysis. A calibration curve was made with three standard concentrations for CH4 (1, 5, and 10 ppm, provided by Scotty Standards) and dry air.
Keyword(s):
Arctic Ocean; dissolved methane concentration
Related to:
Farías, Laura; Verdugo, Josefa (2025): Nitrous oxide in seawater during Lomrog III cruise, Arctic Ocean (2012) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.977808
Marcussen, Christian (2012): Lomonosov Ridge off Greenland 2012 (LOMROG III) - Cruise Report. Geological Survey of Denmark and Greenland, Danish Ministry of Climate and Energy, 222 pp, hdl:10013/epic.45351.d001
Stratmann, Tanja; Lund-Hansen, Lars Chresten; Sorrell, Brian K; Markager, Stiig (2018): Concentrations of organic and inorganic nutrients and chlorophyll-a during cruise LOMROG III in the central Arctic Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.896134
References:
Stratmann, Tanja; Lund-Hansen, Lars Chresten; Sorrell, Brian K; Markager, Stiig (2017): Concentrations of organic and inorganic bound nutrients and chlorophyll a in the Eurasian Basin, Arctic Ocean, early autumn 2012. Regional Studies in Marine Science, 9, 69-75, https://doi.org/10.1016/j.rsma.2016.11.008
Verdugo, Josefa; Damm, Ellen; Snoeijs, P; Díez, Beatriz; Farías, Laura (2016): Climate relevant trace gases (N2O and CH4) in the Eurasian Basin (Arctic Ocean). Deep Sea Research Part I: Oceanographic Research Papers, 117, 84-94, https://doi.org/10.1016/j.dsr.2016.08.016
Funding:
Swedish Research Council (VR), grant/award no. SWEDARCTIC 2011-2015
Coverage:
Median Latitude: 85.883944 * Median Longitude: 2.490472 * South-bound Latitude: 82.195833 * West-bound Longitude: -69.411500 * North-bound Latitude: 89.265000 * East-bound Longitude: 78.242667
Date/Time Start: 2012-08-02T11:35:00 * Date/Time End: 2012-09-11T09:30:00
Minimum DEPTH, water: 9.628 m * Maximum DEPTH, water: 4350.000 m
Event(s):
LR12s01  * Latitude: 82.958000 * Longitude: 14.933000 * Date/Time: 2012-08-02T11:35:00 * Location: Arctic Ocean * Campaign: LOMROG-III * Basis: Oden * Method/Device: CTD/Rosette (CTD-RO) * Comment: Ship
LR12s02  * Latitude: 86.743167 * Longitude: 1.955167 * Date/Time: 2012-08-05T17:03:00 * Location: Arctic Ocean * Campaign: LOMROG-III * Basis: Oden * Method/Device: CTD/Rosette (CTD-RO) * Comment: Ship
LR12s03  * Latitude: 87.770000 * Longitude: -37.757500 * Date/Time: 2012-08-09T13:09:00 * Location: Arctic Ocean * Campaign: LOMROG-III * Basis: Oden * Method/Device: CTD/Rosette (CTD-RO) * Comment: Ship
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEventVerdugo, Josefa
Latitude of eventLatitudeVerdugo, Josefa
Longitude of eventLongitudeVerdugo, Josefa
DATE/TIMEDate/TimeVerdugo, JosefaGeocode
DEPTH, waterDepth watermVerdugo, JosefaCTD/Rosette (CTD-RO)Geocode
MethaneCH4nmol/lVerdugo, JosefaGas chromatograph, Varian Inc., 3380
SalinitySalVerdugo, JosefaCTD/Rosette (CTD-RO)
Temperature, waterTemp°CVerdugo, JosefaCTD/Rosette (CTD-RO)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
385 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Event

Latitude

Longitude

Date/Time

Depth water [m]

CH4 [nmol/l]

Sal

Temp [°C]
LR12s01 82.958014.93302012-08-02T11:35:0010.2238.388337747452530033.1722-1.6602
LR12s0182.958014.93302012-08-02T11:35:0040.17212.952088102826535034.0580-1.7600
LR12s0182.958014.93302012-08-02T11:35:0060.0237.266104053508103034.0983-1.7576
LR12s0182.958014.93302012-08-02T11:35:00100.4865.769792461582200034.4642-0.1216
LR12s0182.958014.93302012-08-02T11:35:00150.3979.809833759782139034.73701.2585
LR12s0182.958014.93302012-08-02T11:35:00200.7537.415735212700693034.86581.7344
LR12s0182.958014.93302012-08-02T11:35:00500.2095.395714563600724034.90150.8998
LR12s0182.958014.93302012-08-02T11:35:00999.95211.081698612919157034.8997-0.2451
LR12s0182.958014.93302012-08-02T11:35:001500.11210.632805135341385034.9128-0.6475
LR12s0182.958014.93302012-08-02T11:35:002000.6599.809833759782139034.9145-0.7428
LR12s0182.958014.93302012-08-02T11:35:002501.18911.081698612919157034.9248-0.7570
LR12s02 86.74321.95522012-08-05T15:50:0010.3931.248580255326882332.8509-1.6802
LR12s0286.74321.95522012-08-05T15:50:0019.2671.560924083412839332.9340-1.6739
LR12s0286.74321.95522012-08-05T15:50:0039.5931.873267911498796533.2297-1.7220
LR12s0286.74321.95522012-08-05T15:50:0059.2371.475739403025760233.5415-1.7041
LR12s0286.74321.95522012-08-05T15:50:00150.4141.000000000000000034.54680.1475
LR12s0286.74321.95522012-08-05T15:50:00199.4031.5189482192953259
LR12s0286.74321.95522012-08-05T15:50:00499.7631.637820360420331934.87800.7080
LR12s0286.74321.95522012-08-05T15:50:00999.5241.786410536826589234.8883-0.1861
LR12s0286.74321.95522012-08-05T15:50:001999.5291.935000713232846634.9180-0.6526
LR12s03 87.7700-37.75752012-08-09T19:00:0010.0361.043459654795302131.9585-1.6658
LR12s0387.7700-37.75752012-08-09T19:00:0020.2963.718082830107935632.0225-1.6664
LR12s0387.7700-37.75752012-08-09T19:00:0039.9145.144548523608007032.9725-1.7708
LR12s0387.7700-37.75752012-08-09T19:00:0059.6023.302030336170415033.1782-1.7810
LR12s0387.7700-37.75752012-08-09T19:00:00100.1032.885977842232894034.1278-1.3349
LR12s0387.7700-37.75752012-08-09T19:00:00199.6712.469925348295373434.72710.6668
LR12s0387.7700-37.75752012-08-09T19:00:00501.0724.550187817982978034.87610.6401
LR12s0387.7700-37.75752012-08-09T19:00:00998.6464.253007465170462034.8963-0.1517
LR12s0387.7700-37.75752012-08-09T19:00:001501.1946.392706005420569034.9146-0.4733
LR12s0387.7700-37.75752012-08-09T19:00:002000.9816.452142075983072534.9284-0.5204
LR12s0387.7700-37.75752012-08-09T19:00:003000.9165.203984594170510034.9276-0.7327
LR12s0387.7700-37.75752012-08-09T19:00:003500.1285.976653511483049034.9357-0.7146
LR12s04 88.3467-69.41152012-08-16T09:00:0010.08913.991724300998992031.2489-1.6008
LR12s0488.3467-69.41152012-08-16T09:00:0020.33012.159248093633620031.4810-1.6359
LR12s0488.3467-69.41152012-08-16T09:00:0039.5947.489389371637996032.4176-1.7403
LR12s0488.3467-69.41152012-08-16T09:00:0060.52711.331678193533130033.0842-1.7102
LR12s0488.3467-69.41152012-08-16T09:00:00100.37810.267659750546786034.0406-1.3191
LR12s0488.3467-69.41152012-08-16T09:00:00200.6897.607613643080922534.67420.4039
LR12s0488.3467-69.41152012-08-16T09:00:00501.2495.716025299994087534.86070.4717
LR12s0488.3467-69.41152012-08-16T09:00:001001.5544.001773364071643034.8933-0.1730
LR12s0488.3467-69.41152012-08-16T09:00:001196.9676.720931607258969534.9094-0.3182
LR12s05 89.2650-58.84722012-08-20T09:00:009.96619.790855909011020030.8226-1.6172
LR12s0589.2650-58.84722012-08-20T09:00:0020.8144.067388084059354031.3685-1.6263
LR12s0589.2650-58.84722012-08-20T09:00:0040.3603.711700854486265332.6939-1.7570
LR12s0589.2650-58.84722012-08-20T09:00:0060.5582.916635282499353633.3118-1.7346
LR12s0589.2650-58.84722012-08-20T09:00:00100.2821.000000000000000034.1351-1.3347
LR12s0589.2650-58.84722012-08-20T09:00:00200.5461.012662465372803434.72090.5962
LR12s0589.2650-58.84722012-08-20T09:00:00500.9723.753546410906626634.87380.5915
LR12s0589.2650-58.84722012-08-20T09:00:001001.2777.833488161892090034.8950-0.1507
LR12s0589.2650-58.84722012-08-20T09:00:001501.1039.339928193025184034.9117-0.4688
LR12s0589.2650-58.84722012-08-20T09:00:001919.9102.780637224133170334.9265-0.5362
LR12s0589.2650-58.84722012-08-20T09:00:002998.2511.807728037359713534.9271-0.7269
LR12s0589.2650-58.84722012-08-20T09:00:003730.7711.000000000000000034.9340-0.6860
LR12s06 88.149378.24272012-08-27T17:15:009.6284.198810919788515533.0860-1.7786
LR12s0688.149378.24272012-08-27T17:15:0020.2845.741735069637309533.0871-1.7808
LR12s0688.149378.24272012-08-27T17:15:0040.1332.467307151624871733.7475-1.7609
LR12s0688.149378.24272012-08-27T17:15:0059.8872.861609989919561533.8210-1.8175
LR12s0688.149378.24272012-08-27T17:15:00100.29210.199071502533828034.2254-1.1871
LR12s0688.149378.24272012-08-27T17:15:00198.8908.518998539365137034.79731.0278
LR12s0688.149378.24272012-08-27T17:15:00499.9136.838925576196448034.87460.6246
LR12s0688.149378.24272012-08-27T17:15:001000.09711.810570059042563034.8913-0.2719
LR12s0688.149378.24272012-08-27T17:15:001499.6225.398863036337573034.9271-0.4680
LR12s0688.149378.24272012-08-27T17:15:002499.9434.507395749758275034.9196-0.7045
LR12s0688.149378.24272012-08-27T17:15:003000.3706.427479136236773034.9273-0.7382
LR12s0688.149378.24272012-08-27T17:15:003500.2288.347562522715270034.9341-0.7156
LR12s07 88.790553.10302012-08-31T19:35:0020.55013.738744093435170032.9263-1.7684
LR12s0788.790553.10302012-08-31T19:35:0039.97213.255817409135487033.6057-1.7817
LR12s0788.790553.10302012-08-31T19:35:0059.89912.376643189000166033.7263-1.8162
LR12s0788.790553.10302012-08-31T19:35:00100.78110.989776813575440034.0626-1.4569
LR12s0788.790553.10302012-08-31T19:35:00200.4899.280959315284258034.73070.7842
LR12s0788.790553.10302012-08-31T19:35:00500.2701.677959721437984234.87900.7104
LR12s0788.790553.10302012-08-31T19:35:001000.0601.182650301643437034.8935-0.1660
LR12s0788.790553.10302012-08-31T19:35:001500.2221.000000000000000034.9099-0.5133
LR12s0788.790553.10302012-08-31T19:35:001999.1522.074207257273619034.9177-0.6733
LR12s0788.790553.10302012-08-31T19:35:003000.3291.504601424509890434.9294-0.7464
LR12s0788.790553.10302012-08-31T19:35:003500.1025.665200550784076034.9356-0.7179
LR12s0788.790553.10302012-08-31T19:35:003999.1048.166513120746531034.9397-0.6675
LR12s0788.790553.10302012-08-31T19:35:004350.00010.6678256907089870
LR12s08 85.42655.27722012-09-07T11:30:0010.15723.853860734445620033.1550-1.7732
LR12s0885.42655.27722012-09-07T11:30:0020.49713.074631839863360033.1731-1.7688
LR12s0885.42655.27722012-09-07T11:30:0039.89114.475410860463663033.8130-1.7335
LR12s0885.42655.27722012-09-07T11:30:0059.82510.674040284113396034.0865-1.7638
LR12s0885.42655.27722012-09-07T11:30:00100.28116.037617946635006034.2498-1.2117
LR12s0885.42655.27722012-09-07T11:30:00200.11811.048969984794518034.79070.9817
LR12s0885.42655.27722012-09-07T11:30:00500.2705.466683330208919534.87290.6296
LR12s0885.42655.27722012-09-07T11:30:001000.4536.581057718344477034.8878-0.2052
LR12s0885.42655.27722012-09-07T11:30:001499.9254.185673519548418034.9128-0.4875
LR12s0885.42655.27722012-09-07T11:30:002000.0974.669957716261534034.9205-0.6256
LR12s0885.42655.27722012-09-07T11:30:002499.7843.878439459268055034.9217-0.7377
LR12s0885.42655.27722012-09-07T11:30:003000.4903.998208669207857034.9295-0.7412
LR12s09 84.37023.72152012-09-08T13:00:0010.1332.477660438667750333.1452-1.7626
LR12s0984.37023.72152012-09-08T13:00:0019.9805.602074611010436033.1424-1.7630
LR12s0984.37023.72152012-09-08T13:00:0040.1345.742673248765857033.9189-1.7227
LR12s0984.37023.72152012-09-08T13:00:0060.3815.102168343435606034.0979-1.6964
LR12s0984.37023.72152012-09-08T13:00:00100.6355.711429107042430034.3208-0.8146
LR12s0984.37023.72152012-09-08T13:00:00200.10110.996896415255474034.79330.9615
LR12s0984.37023.72152012-09-08T13:00:00500.0253.633693682434544034.87240.5869
LR12s0984.37023.72152012-09-08T13:00:001000.2287.320502405798913034.8834-0.2690
LR12s0984.37023.72152012-09-08T13:00:001500.1187.549626111770710034.9105-0.5191
LR12s0984.37023.72152012-09-08T13:00:001999.9364.024245453977380034.9187-0.6611
LR12s0984.37023.72152012-09-08T13:00:002499.4093.571205398987690034.9230-0.7456
LR12s0984.37023.72152012-09-08T13:00:002999.8455.024057989127039034.9304-0.7394
LR12s0984.37023.72152012-09-08T13:00:003778.8439.528421754254410034.9339-0.6731
LR12s10 83.823515.17282012-09-09T12:45:009.8621.000000000000000032.5774-1.7589
LR12s1083.823515.17282012-09-09T12:45:0019.8904.955924983730700033.3237-1.5717
LR12s1083.823515.17282012-09-09T12:45:0039.8554.393894574927528034.1167-1.6973
LR12s1083.823515.17282012-09-09T12:45:0060.5023.610010057386263734.1517-1.8198
LR12s1083.823515.17282012-09-09T12:45:00100.0204.078368731388906034.3032-1.4312
LR12s1083.823515.17282012-09-09T12:45:00200.2937.740477338476376034.88531.9014
LR12s1083.823515.17282012-09-09T12:45:00500.8128.393402442944390034.91261.0688
LR12s1083.823515.17282012-09-09T12:45:001000.8126.610414657666347034.9029-0.2626
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LR12s1083.823515.17282012-09-09T12:45:002000.6176.801269688203151034.9201-0.7515
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LR12s1083.823515.17282012-09-09T12:45:003000.2695.872107039537127034.9338-0.7610
LR12s1083.823515.17282012-09-09T12:45:003499.8185.681252009000323034.9386-0.7096
LR12s1083.823515.17282012-09-09T12:45:004000.2815.490396978463518034.9388-0.6584
LR12s11 82.768714.74452012-09-10T10:00:0010.1225.429213749038633032.4277-1.7443
LR12s1182.768714.74452012-09-10T10:00:0020.0975.281311009879904032.9621-1.6827
LR12s1182.768714.74452012-09-10T10:00:0040.0684.955924983730700034.0582-1.6464
LR12s1182.768714.74452012-09-10T10:00:0060.1637.588593740756080034.0965-1.6119
LR12s1182.768714.74452012-09-10T10:00:00100.0713.994557179198959634.3401-0.6590
LR12s1182.768714.74452012-09-10T10:00:00200.5085.177779092468794034.87232.1272
LR12s1182.768714.74452012-09-10T10:00:00300.6422.707803348518015534.92151.9187
LR12s1182.768714.74452012-09-10T10:00:00502.0634.068508548778325034.95161.3289
LR12s1182.768714.74452012-09-10T10:00:001002.73410.319864323887279034.9088-0.4551
LR12s1182.768714.74452012-09-10T10:00:001457.2425.887712240430694034.9130-0.7576
LR12s12 82.19588.75202012-09-11T09:30:0010.0003.5508489617227720
LR12s1282.19588.75202012-09-11T09:30:0020.0005.2517304620481580
LR12s1282.19588.75202012-09-11T09:30:0040.0005.4292137490386330
LR12s1282.19588.75202012-09-11T09:30:0060.0007.5195724624820070
LR12s1282.19588.75202012-09-11T09:30:00100.0004.6749097793291150
LR12s1282.19588.75202012-09-11T09:30:00200.0004.0882289139994885
LR12s1282.19588.75202012-09-11T09:30:00300.0003.5015480486698625
LR12s1282.19588.75202012-09-11T09:30:00500.0003.5360586878068990