Chlorofluorocarbons and noble gas measured on water bottle samples during POLARSTERN cruise ANT-XXIII/3

On the Drake Passage section we took samples for noble gases (helium isotopes 3He and 4He and neon 20Ne), distributed on 18 profiles, and samples for Chlorofluorocarbons (CFC-11 and CFC-12) distributed on 22 profiles. Most of the profiles were carried out on the first section southward and thus will provide a synoptic section of the variable current system. Two stations were on the repeated section northwards, one station to fill the gap in the southward section close to 55.9° S (PS69/232 with He/Ne and CFCs) and one repeat of station PS69/138 (PS69/230, CFCs only to check for synopticity in the gas tracers).