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Hoppe, Clara Jule Marie; Fong, Allison A; Grosse, Julia; Müller, Oliver; Dietrich, Ulrike; Lucassen, Magnus (2026): 14C-based carbon fixation rate measurements from surface waters during the MOSAiC expedition (PS122) in the Central Arctic Ocean 2019-2020 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.993238

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Published: 2026-03-31 • DOI registered: 2026-04-29

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Abstract:
Rates of carbon fixation at 1C and 10 µmol photons m-2 s-1 based on 14C-enriched incubations (see Nielsen et al. 1952 for details and calculations) from 20m water depth or the Chl-a maximum (when present) during the MOSAiC (PS122) drift expedition in the central Arctic Ocean. Samples were collected via CTD rosette casts between October 2019 and October 2020, methods are described in Hoppe et al. (2024).
Keyword(s):
Laboratory experiment; Photosynthesis; Primary production; primary productivity
References:
Hoppe, Clara Jule Marie; Fuchs, Niels; Notz, Dirk; Anderson, Philip; Assmy, Philipp; Berge, Jørgen; Bratbak, Gunnar; Guillou, Gaël; Kraberg, Alexandra Claudia; Larsen, Aud; Lebreton, Benoit; Leu, Eva; Lucassen, Magnus; Müller, Oliver; Oziel, Laurent; Rost, Björn; Schartmüller, Bernhard; Torstensson, Anders; Wloka, Jonas (2024): Photosynthetic light requirement near the theoretical minimum detected in Arctic microalgae. Nature Communications, 15(1), 7385, https://doi.org/10.1038/s41467-024-51636-8
Nielsen, E S (1952): The Use of Radio-active Carbon (C14) for Measuring Organic Production in the Sea. ICES Journal of Marine Science, 18(2), 117-140, https://doi.org/10.1093/icesjms/18.2.117
Project(s):
Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC)
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AFMOSAiC-1_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS122_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate / MOSAiC
Coverage:
Median Latitude: 85.224594 * Median Longitude: 35.535004 * South-bound Latitude: 79.205856 * West-bound Longitude: -35.676758 * North-bound Latitude: 89.024918 * East-bound Longitude: 119.607590
Date/Time Start: 2020-01-20T06:46:00 * Date/Time End: 2020-09-17T06:25:00
Minimum DEPTH, water: 12.2 m * Maximum DEPTH, water: 40.9 m
Event(s):
PS122/2_21-1  * Latitude: 87.440610 * Longitude: 97.545576 * Date/Time: 2020-01-20T06:46:00 * O2A Registry URI: https://registry.o2a-data.de/items/5475 * Location: Arctic Ocean * Campaign: PS122/2 (MOSAiC20192020) * Basis: Polarstern * Method/Device: CTD/Rosette (CTD-RO) * Comment: 20200120: ocean city
PS122/2_25-26  * Latitude: 88.091106 * Longitude: 77.593872 * Date/Time: 2020-02-18T06:39:00 * O2A Registry URI: https://registry.o2a-data.de/items/5475 * Location: Arctic Ocean * Campaign: PS122/2 (MOSAiC20192020) * Basis: Polarstern * Method/Device: CTD/Rosette (CTD-RO) * Comment: 20200218: ocean city
PS122/3_31-59  * Latitude: 87.143902 * Longitude: 17.341387 * Date/Time: 2020-03-14T08:28:00 * Elevation: -4145.4 m * O2A Registry URI: https://registry.o2a-data.de/items/3214 * Location: Arctic Ocean * Campaign: PS122/3 (MOSAiC20192020) * Basis: Polarstern * Method/Device: CTD/Rosette (CTD-RO) * Comment: J. Schaffer, C. Hoppe; 4215 m, SE 32.1; deployed together with Tpop_73
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEventHoppe, Clara Jule MarieStation Device Operation
2 Cruise/expeditionExpeditionHoppe, Clara Jule MarieMOSAiC leg
3 Activity descriptionActivityHoppe, Clara Jule MarieMOSAiC week
4 Cast numberCastHoppe, Clara Jule Marie
5 DATE/TIMEDate/TimeHoppe, Clara Jule MarieGeocode
6 Device typeDeviceHoppe, Clara Jule Mariedevice
7 Device typeDeviceHoppe, Clara Jule Mariedevice code
8 LATITUDELatitudeHoppe, Clara Jule MarieGeocode
9 LONGITUDELongitudeHoppe, Clara Jule MarieGeocode
10 DEPTH, waterDepth watermHoppe, Clara Jule MarieGeocode – ice type
11 Chlorophyll aChl aµg/lHoppe, Clara Jule Marie
12 Type of studyStudy typeHoppe, Clara Jule Marie
13 Carbon, uptake rate, darkC upt rate darkμg/l/dayHoppe, Clara Jule Marie
14 Carbon, uptake rate, raw lightC upt rate raw lightμg/l/dayHoppe, Clara Jule Marie
15 Carbon, uptake rate, light, dark correctedC upt rate light dark corrμg/l/dayHoppe, Clara Jule Marie
16 Carbon, uptake rate, dark corrected, per chlorophyll aC upt rate dark corr/chl aμg/μg/dayHoppe, Clara Jule Marie
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
572 data points

Data

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

1 
Event
(Station Device Operation)		2 
Expedition
(MOSAiC leg)		3 
Activity
(MOSAiC week)		4 
Cast		5 
Date/Time		6 
Device
(device)		7 
Device
(device code)		8 
Latitude		9 
Longitude		10 
Depth water [m]
(ice type)		11 
Chl a [µg/l]		12 
Study type		13 
C upt rate dark [μg/l/day]		14 
C upt rate raw light [μg/l/day]		15 
C upt rate light dark corr [μg/l/day]		16 
C upt rate dark corr/chl a [μg/μg/day]
PS122/2_21-1 PS122/22112020-01-20T06:46:00Ocean City CTDCTD_SBE9plus_93587.4406197.5455819.90.0065Laboratory experiment0.000030.00010.00010.0165
PS122/2_21-1PS122/22112020-01-20T06:46:00Ocean City CTDCTD_SBE9plus_93587.4406197.5455819.90.0065Laboratory experiment0.000030.00010.00010.0128
PS122/2_25-26 PS122/225262020-02-18T06:39:00Ocean City CTDCTD_SBE9plus_93588.0911177.5938720.30.0070Laboratory experiment0.000030.00010.00010.0116
PS122/2_25-26PS122/225262020-02-18T06:39:00Ocean City CTDCTD_SBE9plus_93588.0911177.5938720.30.0070Laboratory experiment0.000030.00010.00010.0119
PS122/3_31-59 PS122/331592020-03-14T06:49:00CTD AWI-OZECTD_SBE9plus_32187.1439017.3413920.40.0112Laboratory experiment0.000000.00020.00020.0144
PS122/3_31-59PS122/331592020-03-14T06:49:00CTD AWI-OZECTD_SBE9plus_32187.1439017.3413920.40.0112Laboratory experiment0.000000.00020.00020.0163
PS122/3_32-75 PS122/332752020-03-22T08:24:00Ocean City CTDCTD_SBE9plus_93586.2266615.6761320.40.0125Laboratory experiment0.000060.00030.00030.0205
PS122/3_32-75PS122/332752020-03-22T08:24:00Ocean City CTDCTD_SBE9plus_93586.2266615.6761320.40.0125Laboratory experiment0.000060.00030.00020.0180
PS122/3_33-69 PS122/333692020-03-27T12:20:00Ocean City CTDCTD_SBE9plus_93585.8241413.3621520.10.0118Laboratory experiment0.000000.00020.00020.0204
PS122/3_33-69PS122/333692020-03-27T12:20:00Ocean City CTDCTD_SBE9plus_93585.8241413.3621520.10.0118Laboratory experiment0.000000.00020.00020.0177
PS122/3_34-77 PS122/334772020-04-05T13:59:00Ocean City CTDCTD_SBE9plus_93584.5735813.5161019.80.0146Laboratory experiment0.000000.00030.00030.0207
PS122/3_34-77PS122/334772020-04-05T13:59:00Ocean City CTDCTD_SBE9plus_93584.5735813.5161019.80.0146Laboratory experiment0.000000.00030.00030.0173
PS122/3_35-63 PS122/335632020-04-09T08:59:00Ocean City CTDCTD_SBE9plus_93584.4339514.8257120.60.0171Laboratory experiment0.000100.00060.00050.0309
PS122/3_35-63PS122/335632020-04-09T08:59:00Ocean City CTDCTD_SBE9plus_93584.4339514.8257120.60.0171Laboratory experiment0.000100.00070.00060.0331
PS122/3_36-81 PS122/336812020-04-17T07:15:00Ocean City CTDCTD_SBE9plus_93584.4091213.6527720.30.0207Laboratory experiment0.000010.00030.00030.0136
PS122/3_36-81PS122/336812020-04-17T07:15:00Ocean City CTDCTD_SBE9plus_93584.4091213.6527720.30.0207Laboratory experiment0.000010.00030.00030.0126
PS122/3_37-45 PS122/337452020-04-23T08:02:00Ocean City CTDCTD_SBE9plus_93584.0741416.0544720.10.0204Laboratory experiment0.000000.00040.00040.0176
PS122/3_37-45PS122/337452020-04-23T08:02:00Ocean City CTDCTD_SBE9plus_93584.0741416.0544720.10.0204Laboratory experiment0.000000.00080.00080.0373
PS122/3_38-54 PS122/338542020-04-30T07:31:00Ocean City CTDCTD_SBE9plus_93583.9384717.4027220.20.0356Laboratory experiment0.000000.00060.00060.0175
PS122/3_38-54PS122/338542020-04-30T07:31:00Ocean City CTDCTD_SBE9plus_93583.9384717.4027220.20.0356Laboratory experiment0.000000.00050.00050.0151
PS122/3_39-51 PS122/339512020-05-07T07:26:00Ocean City CTDCTD_SBE9plus_93583.9348116.9544920.30.0511Laboratory experiment0.000000.00070.00070.0142
PS122/3_39-51PS122/339512020-05-07T07:26:00Ocean City CTDCTD_SBE9plus_93583.9348116.9544920.30.0511Laboratory experiment0.000000.00070.00070.0139
PS122/4_44-67 PS122/444672020-06-16T06:54:14CTD AWI-OZECTD_SBE9plus_32182.228078.2841840.90.8225Laboratory experiment0.000000.04860.04860.0591
PS122/4_44-67PS122/444672020-06-16T06:54:14CTD AWI-OZECTD_SBE9plus_32182.228078.2841840.90.8225Laboratory experiment0.000000.03990.03990.0485
PS122/4_44-184 PS122/4441842020-06-27T10:04:08CTD AWI-OZECTD_SBE9plus_32181.958209.9083530.40.5164Laboratory experiment0.000000.03870.03870.0750
PS122/4_44-184PS122/4441842020-06-27T10:04:08CTD AWI-OZECTD_SBE9plus_32181.958209.9083530.40.5164Laboratory experiment0.000000.03230.03230.0624
PS122/4_45-31 PS122/445312020-07-01T06:25:25CTD AWI-OZECTD_SBE9plus_32181.771388.8917231.30.4352Laboratory experiment0.000250.00870.00840.0194
PS122/4_45-31PS122/445312020-07-01T06:25:25CTD AWI-OZECTD_SBE9plus_32181.771388.8917231.30.4352Laboratory experiment0.000250.01870.01840.0424
PS122/4_46-60 PS122/446602020-07-09T07:59:59CTD AWI-OZECTD_SBE9plus_32181.557472.6057431.40.4596Laboratory experiment0.000000.02610.02610.0569
PS122/4_46-60PS122/446602020-07-09T07:59:59CTD AWI-OZECTD_SBE9plus_32181.557472.6057431.40.4596Laboratory experiment0.000000.03050.03050.0663
PS122/4_47-60 PS122/447602020-07-16T10:50:00CTD AWI-OZECTD_SBE9plus_32181.230970.2981015.20.7876Laboratory experiment0.000410.03910.03870.0491
PS122/4_47-60PS122/447602020-07-16T10:50:00CTD AWI-OZECTD_SBE9plus_32181.230970.2981015.20.7876Laboratory experiment0.000410.04250.04210.0534
PS122/4_48-62 PS122/448622020-07-23T08:50:32CTD AWI-OZECTD_SBE9plus_32180.37446-0.5528315.20.8780Laboratory experiment0.000400.02850.02810.0321
PS122/4_48-62PS122/448622020-07-23T08:50:32CTD AWI-OZECTD_SBE9plus_32180.37446-0.5528315.20.8780Laboratory experiment0.000400.02110.02070.0235
PS122/4_49-25 PS122/449252020-07-29T06:22:29CTD AWI-OZECTD_SBE9plus_32179.20586-2.6607012.20.1738Laboratory experiment0.000000.00720.00720.0415
PS122/4_49-25PS122/449252020-07-29T06:22:29CTD AWI-OZECTD_SBE9plus_32179.20586-2.6607012.20.1738Laboratory experiment0.000000.00430.00430.0246
PS122/5_59-62 PS122/559622020-08-17T14:52:05CTD AWI-OZECTD_SBE9plus_32188.29849-34.6637321.80.2344Laboratory experiment0.000000.01510.01510.0642
PS122/5_59-62PS122/559622020-08-17T14:52:05CTD AWI-OZECTD_SBE9plus_32188.29849-34.6637321.80.2344Laboratory experiment0.000000.01100.01100.0470
PS122/5_59-72 PS122/559722020-08-18T07:40:00CTD AWI-OZECTD_SBE9plus_32188.93778-35.6767625.40.2344Laboratory experiment0.000120.01100.01090.0463
PS122/5_59-72PS122/559722020-08-18T07:40:00CTD AWI-OZECTD_SBE9plus_32188.93778-35.6767625.40.2344Laboratory experiment0.000120.01190.01180.0503
PS122/5_59-274 PS122/5592742020-08-26T09:10:00CTD AWI-OZECTD_SBE9plus_32187.82900104.6303113.00.4066Laboratory experiment0.001110.02320.02210.0544
PS122/5_59-274PS122/5592742020-08-26T09:10:00CTD AWI-OZECTD_SBE9plus_32187.82900104.6303113.00.4066Laboratory experiment0.001110.02460.02350.0578
PS122/5_59-306 PS122/5593062020-08-27T10:16:00CTD AWI-OZECTD_SBE9plus_32187.94212107.2756618.30.6199Laboratory experiment0.000820.04430.04350.0701
PS122/5_59-306PS122/5593062020-08-27T10:16:00CTD AWI-OZECTD_SBE9plus_32187.94212107.2756618.30.6199Laboratory experiment0.000820.02840.02750.0444
PS122/5_59-357 PS122/5593572020-08-29T04:39:00CTD AWI-OZECTD_SBE9plus_32188.09196109.2346120.30.5548Laboratory experiment0.000610.01620.01560.0281
PS122/5_59-357PS122/5593572020-08-29T04:39:00CTD AWI-OZECTD_SBE9plus_32188.09196109.2346120.30.5548Laboratory experiment0.000610.01220.01160.0209
PS122/5_60-69 PS122/560692020-09-03T09:42:00CTD AWI-OZECTD_SBE9plus_32188.56074119.6075922.20.5470Laboratory experiment0.000210.00920.00900.0164
PS122/5_60-69PS122/560692020-09-03T09:42:00CTD AWI-OZECTD_SBE9plus_32188.56074119.6075922.20.5470Laboratory experiment0.000210.01230.01200.0220
PS122/5_61-161 PS122/5611612020-09-11T09:36:00CTD AWI-OZECTD_SBE9plus_32188.73756104.6359425.10.2669Laboratory experiment0.000280.00340.00310.0118
PS122/5_61-161PS122/5611612020-09-11T09:36:00CTD AWI-OZECTD_SBE9plus_32188.73756104.6359425.10.2669Laboratory experiment0.000280.01580.01550.0580
PS122/5_62-91 PS122/562912020-09-17T06:25:00CTD AWI-OZECTD_SBE9plus_32189.02492108.1665216.10.2600Laboratory experiment0.000160.00360.00340.0130
PS122/5_62-91PS122/562912020-09-17T06:25:00CTD AWI-OZECTD_SBE9plus_32189.02492108.1665216.10.2600Laboratory experiment0.000160.01280.01260.0486