CFC, and noble gas measurements during POLARSTERN cruise PS82 (ANT-XXIX/9) ...

• Main Authors: Huhn, Oliver, Rhein, Monika, Schröder, Michael, Bulsiewicz, Klaus, Sültenfuß, Jürgen
• Format: Dataset
• Language: English
• Published: PANGAEA 2017
• Subjects: Event label; Date/Time of event; Latitude of event; Longitude of event; Elevation of event; DEPTH, water; Freon-11 trichorofluoromethane; Freon-12 dichlorodifluoromethane; Helium; Helium, dHe-3; Neon; Bottle number; CTD/Rosette; PS82; Polarstern; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarctic; Arctic; Antarc*; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.883799; https://doi.pangaea.de/10.1594/PANGAEA.883799

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 3 = doubtful; / = flag 4 = bad, # = flag 6 = mean of replicates.Noble gases (3He, 4He, 20Ne): We took 540 water samples for stable noble gas isotopes (3He, 4He, Ne) in copper tubes from 68 stations. In the IUP Bremen noble gas lab the samples were processed in a first step with a UHV (ultra high vacuum) gas extraction system. The required vacuum conditions are achieved by a rotary pump and an oil diffusion pump. To maintain contamination-free samples, the extraction system is checked for leaks on each sample separately. Sample gases are transferred via water vapour into a glass ampoule kept at liquid nitrogen temperature. Quality checks of this sample preparation line are done on a routine basis. This includes special vacuum checks and preparing accurately defined samples for internal control measurement. For analysis of the noble gas ...