Huhn, Oliver; Rhein, Monika; Bulsiewicz, Klaus; Sültenfuß, Jürgen (2021): Noble gas (He, Ne isotopes) and transient tracer (CFC-12, SF6) measurements from POLARSTERN cruise PS111 (Weddell Sea, 2018) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.930718
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Noble gases (3He, 4He, 20Ne, 22Ne)
The water samples for stable noble gas isotopes (3He, 4He, 20Ne, 22Ne) were stored from the CTD/water bottle system without contact to atmospheric air and preventing air bubbles into gas tight copper tubes, which are clamped of at both sides.
In the IUP Bremen noble gas lab the samples were pre-processed with a UHV (ultra high vacuum) gas extraction system. Sample gases are transferred via water vapor into a glass ampoule kept at liquid nitrogen temperature. For analysis of the noble gas isotopes the glass ampoules are connected to a fully automated UHV mass spectrometric system equipped with a two stage cryogenic system. Regularly, the system is calibrated with atmospheric air standards (reproducibility <0.2%). Also measurement of line blanks and linearity are done. The performance of the Bremen facility is described in Sültenfuß et al. (2009).
The total errors for the noble gas measurements are estimated to be < 0.5 % for 4He, < 0.5 % for total Ne, and < 0.5% for δ3He
Transient tracer (CFC-12, SF6)
Chlorofluorocarbon (CFC-12) and sulfur hexafluoride (SF6) water samples from the CTD-bottle-system were stored in glass ampoules without contact to the atmosphere during the tapping. Immediately after sampling the ampoules are flame sealed after a CFC free headspace of pure nitrogen had been applied.
The determination of concentrations in the IUP Bremen gas chromatography lab is accomplished by purge and trap sample pre-treatment followed by gas chromatographic (GC) separation on a capillary column and electron capture detection (ECD). The system is calibrated by analyzing several different volumes of a known standard gas. The loss of trace gas into the headspace is considered by a careful equilibration between liquid and gas phase under controlled conditions before the sealed ampoules are opened and a precise measurement of the volume of the headspace. Concentrations are calibrated on SIO98 scale (Prinn et al., 2000). A more detailed description of the measurement system is given by Bulsiewicz et at. (1998).
Keyword(s):
Related to:
Janout, Markus A; Hellmer, Hartmut H; Hattermann, Tore; Huhn, Oliver; Sültenfuß, Jürgen; Østerhus, Svein; Stulic, Lukrecia; Ryan, Svenja; Schröder, Michael; Kanzow, Torsten (2021): FRIS Revisited in 2018: On the Circulation and Water Masses at the Filchner and Ronne Ice Shelves in the Southern Weddell Sea. Journal of Geophysical Research: Oceans, 126(6), https://doi.org/10.1029/2021JC017269
Janout, Markus A; Hellmer, Hartmut H; Schröder, Michael; Wisotzki, Andreas (2019): Physical oceanography measured on water bottle samples during POLARSTERN cruise PS111 (ANT-XXXIII/2). Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.897283
Schröder, Michael (2018): The Expedition PS111 of the Research Vessel POLARSTERN to the southern Weddell Sea in 2018. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 718, 161 pp, https://doi.org/10.2312/BzPM_0718_2018
Further details:
Readme: Noble gas (He, Ne isotopes) and transient tracer (CFC-12, SF6) measurements from POLARSTERN cruise PS111 (Weddell Sea, 2018)
Bulsiewicz, Klaus; Rose, Henning; Klatt, Olaf; Putzka, Alfred; Roether, Wolfgang (1998): A capillary-column chromatographic system for efficient chlorofluorocarbon measurement in ocean waters. Journal of Geophysical Research, 103(C8), 15959-15970, https://doi.org/10.1029/98JC00140
Prinn, Ronald G M; Weiss, Ray F; Fraser, Paul J B; Simmonds, Peter; Cunnold, Derek M; Alyea, F N; O'Doherty, Simon; Salameh, P K; Miller, B R; Huang, J; Wang, R H J; Hartley, D E; Harth, C; Steele, L P; Sturrock, G; Midgley, P M; McCulloch, A (2000): A history of chemically and radiatively important gases in air deduced from ALE/GAGE/AGAGE. Journal of Geophysical Research: Atmospheres, 105(D14), 17751-17792, https://doi.org/10.1029/2000JD900141
Sültenfuß, Jürgen; Roether, Wolfgang; Rhein, Monika (2009): The Bremen mass spectrometric facility for the measurement of helium isotopes, neon, and tritium in water. Isotopes in Environmental and Health Studies, 45(2), 83-95, https://doi.org/10.1080/10256010902871929
Coverage:
Median Latitude: -75.656097 * Median Longitude: -38.031039 * South-bound Latitude: -77.898024 * West-bound Longitude: -61.025867 * North-bound Latitude: -63.999757 * East-bound Longitude: 4.999871
Date/Time Start: 2018-01-26T09:46:00 * Date/Time End: 2018-02-28T03:59:00
Minimum DEPTH, water: 1.8 m * Maximum DEPTH, water: 4558.3 m
Event(s):
PS111_9-3 * Latitude: -63.999757 * Longitude: 4.999871 * Date/Time: 2018-01-26T09:46:00 * Elevation: -3849.0 m * Location: South Atlantic Ocean * Campaign: PS111 (ANT-XXXIII/2) * Basis: Polarstern * Method/Device: CTD/Rosette (CTD-RO)
PS111_10-2 * Latitude: -65.385260 * Longitude: 2.567105 * Date/Time: 2018-01-26T21:22:00 * Elevation: -2092.0 m * Location: South Atlantic Ocean * Campaign: PS111 (ANT-XXXIII/2) * Basis: Polarstern * Method/Device: CTD/Rosette (CTD-RO)
PS111_12-2 * Latitude: -66.738849 * Longitude: -0.038670 * Date/Time: 2018-01-27T09:00:00 * Elevation: -4698.0 m * Location: Lazarev Sea * Campaign: PS111 (ANT-XXXIII/2) * Basis: Polarstern * Method/Device: CTD/Rosette (CTD-RO)
Comment:
The tracer data set was carefully checked for accurate measurements and outliers. According to the WOCE standards the following flags were applied to each measurement:
flag 2 = good
flag 3 = doubtful
flag 4 = bad
flag 6 = mean of replicates
flag 9 = no measurement (then, the data value is missing)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Huhn, Oliver | |||
| 2 | Date/Time of event | Date/Time | Huhn, Oliver | |||
| 3 | Latitude of event | Latitude | Huhn, Oliver | |||
| 4 | Longitude of event | Longitude | Huhn, Oliver | |||
| 5 | Elevation of event | Elevation | m | Huhn, Oliver | ||
| 6 | Bottle number | Bottle | Huhn, Oliver | |||
| 7 | DEPTH, water | Depth water | m | Huhn, Oliver | Geocode | |
| 8 | Pressure, water | Press | dbar | Huhn, Oliver | ||
| 9 | Freon-12 (dichlorodifluoromethane) | CFC-12 | pmol/kg | Bulsiewicz, Klaus | Gas chromatographic (GC) separation on a capillary column, electron capture detection (ECD) | total error ± 2 % |
| 10 | Quality flag | QF | Bulsiewicz, Klaus | Quality flag according to WOCE | CFC-12-Flag | |
| 11 | Sulfur hexafluoride, SF6 | SF6 | fmol/kg | Bulsiewicz, Klaus | Gas chromatographic (GC) separation on a capillary column, electron capture detection (ECD) | total error ± 5 % |
| 12 | Quality flag | QF | Bulsiewicz, Klaus | Quality flag according to WOCE | SF6-Flag | |
| 13 | Helium-4 | 4He | nmol/kg | Sültenfuß, Jürgen | Ultra high vacuum (UHV) mass spectrometry | total error < 0.5 % |
| 14 | Quality flag | QF | Sültenfuß, Jürgen | Quality flag according to WOCE | He-Flag | |
| 15 | δ Helium-3 | δ3He | % | Sültenfuß, Jürgen | Ultra high vacuum (UHV) mass spectrometry | 100 x ([3He/4He]obs/[3He/4He]atm.- 1); total error < 0.5% |
| 16 | Quality flag | QF | Sültenfuß, Jürgen | Quality flag according to WOCE | d3He-Flag | |
| 17 | Neon | NEON | nmol/kg | Sültenfuß, Jürgen | Ultra high vacuum (UHV) mass spectrometry | total Ne = 20Ne+22Ne; total error < 0.5 % |
| 18 | Quality flag | QF | Sültenfuß, Jürgen | Quality flag according to WOCE | Neon-Flag |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
4928 data points
Download Data
View dataset as HTML (shows only first 2000 rows)