Stable water isotopes of underway seawater during MOSAiC expedition ...

• Main Authors: Mellat, Moein, Meyer, Hanno, Brunello, Camilla F, Werner, Martin, Dahlke, Sandro, Sommerfeld, Anja, Deckelmann, Holger, Jaiser, Ralf, Weiner, Mikaela, Marent, Andreas
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: isotopes; MOSAiC expedition; seawater; Event label; Sample code/label; Station label; Sample ID; DATE/TIME; Sample type; DEPTH, water; Salinity; δ18O, water; δ Deuterium, water; Deuterium excess; Comment; Surface water sample; Water sample; Tap; see abstract; Mass spectrometer Finnigan MAT Delta-S ISOLAB; Calculated after Dansgaard 1964; PS122/1; PS122/2; PS122/3; PS122/4; PS122/5; Polarstern; Multidisciplinary drifting Observatory for the Study of Arctic Climate MOSAiC; Arctic
• Online Access: https://dx.doi.org/10.1594/pangaea.948291; https://doi.pangaea.de/10.1594/PANGAEA.948291

Underway seawater samples have been taken from underneath the research vessel Polarstern through a pipe installed on the ship. The valve had been open for about 2 minutes before collecting the samples to avoid possible contaminations. Water samples for measurement of stable water isotopes (δ18O, δD,) were collected in narrow-mouth low-density polyethylene 20- or 30-mL plastic bottles (VWR international LLC, Germany), sealed with Parafilm M and stored at +4 °C from the end of the expedition until the measurement. Average daily salinity values were extracted from dship portal (https://dship.awi.de/). Oxygen and hydrogen isotope analyses were carried out at the ISOLAB Facility at AWI Potsdam (https://hdl.handle.net/10013/sensor.ddc92f54-4c63-492d-81c7-696260694001) with mass spectrometers (DELTA-S Finnigan MAT, USA): https://hdl.handle.net/10013/sensor.af148dea-fe65-4c87-9744-50dc4c81f7c9 https://hdl.handle.net/10013/sensor.62e86761-9fae-4f12-9c10-9b245028ea4c employing the equilibration method (details in ...