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- Title
A year of transient tracers chlorofluorocarbon 12 and sulfur hexafluoride, noble gases helium and neon, and tritium in the Arctic Ocean from the MOSAiC expedition (2019-2020).
- Authors
Heuzé, Céline; Huhn, Oliver; Walter, Maren; Sukhikh, Natalia; Karam, Salar; Körtke, Wiebke; Vredenborg, Myriel; Bulsiewicz, Klaus; Sültenfuß, Jürgen; Ying-Chih Fang; Mertens, Christian; Rabe, Benjamin; Tippenhauer, Sandra; Allerholt, Jacob; He, Hailun; Kuhlmey, David; Kuznetsov, Ivan; Mallet, Maria
- Abstract
Trace gases have demonstrated their strength for oceanographic studies, with applications ranging from the tracking of glacial meltwater plumes to estimates of the abyssal overturning duration. Yet measurements of such passive tracers in the ice-covered Arctic Ocean are sparse. We here present a unique data set of trace gases collected during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition, during which the R/V Polarstern drifted along with the Arctic sea ice from the Laptev Sea to Fram Strait, from October 2019 to September 2020. During the expedition, trace 5 gases from anthropogenic origin chlorofluorocarbon 12 (CFC-12), sulfur hexafluoride (SF6), and tritium, along with noble gases helium and neon and their isotopes were collected at a weekly or higher temporal resolution throughout the entire water column and occasionally in the snow, from the ship and from the ice. We describe the sampling procedures along with their challenges, the analysis methods, the data set, and present case studies in Fram Strait and the Central Arctic Ocean to illustrate possible usage for the data along with their robustness. Combined with simultaneous hydrographic measurements, this trace 10 gases data set can be used for process studies and water mass tracing throughout the Arctic in subsequent analyses.
- Subjects
TRITIUM; NOBLE gases; SULFUR hexafluoride; TRACE gases; HELIUM isotopes; ARCTIC climate
- Publication
Earth System Science Data Discussions, 2023, p1
- ISSN
1866-3591
- Publication type
Article
- DOI
10.5194/essd-2023-232