Methane concentration and its isotopic composition within sea ice during POLARSTERN cruise PS106/1 (ARK-XXXI/1.1)

• Main Authors: Verdugo, Josefa, Damm, Ellen
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Arctic; Arctic Ocean; ARK-XXXI/1.1,PASCAL; DATE/TIME; DEPTH; ice/snow; Event label; ICE; Ice station; Identification; Latitude of event; Longitude of event; Methane; Methane concentration; Polarstern; PS106_21-2; PS106_22-1; PS106_25-1; PS106_26-2; PS106_27-1; PS106_28-2; PS106_29-2; PS106_31-2; PS106/1; Sea ice; Sea ice salinity; seawater; stable carbon isotopic composition of methane; Temperature; δ13C; Svalbard; Berichte zur Polar- und Meeresforschung; ice core; Reports on Polar and Marine Research; The Cryosphere
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.937078; https://doi.org/10.1594/PANGAEA.937078

The methane concentration and stable carbon isotopic signature of methane were measured in different Arctic sea ice types as well as in seawater underneath the ice floe during the Polarstern expedition PS106.1. The ice drift took place between 4 - 15 June 2017, north of Svalbard (Macke and Flores, 2018). Sea ice cores were collected using a Kovacs Mark II 9cm drill ice corer. In all ice stations, the first ice core was used for in situ ice temperature measurements, and the second one for methane concentration, stable carbon isotopic signature of methane, bulk ice salinity and nutrient concentrations (Verdugo et al., 2021). Seawater samples were collected using a shipboard Sea-Bird Scientific SBE 911plus CTD (conductivity–temperature– depth) profiler equipped with ancillary sensors and integrated with a SBE32 CarouselWater Sampler with 24 Niskin bottles of 12L each (Macke and Flores, 2018).