Dissolved inorganic carbon and total alkalinity of seawater samples from a Weddell Sea coastal polynya during two tidal observation case studies for RV POLARSTERN expeditions PS89 and PS117

• Main Authors: González-Dávila, Melchor, Droste, Elise S, Santana-Casiano, Juana Magdalena, Schuller, Daniel, Ossebaar, Sharyn, Hoppema, Mario, Bakker, Dorothee C E
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Alkalinity; total; ANT-XXX/2; Carbon; inorganic; dissolved; Cast number; Comment; Coulometric titration; Cruise/expedition; CTD/Rosette; ultra clean; CTD-RO; CTD-UC; DATE/TIME; DEPTH; water; Dissolved inorganic carbon; Event label; LATITUDE; LONGITUDE; Nitrate; nutrients; Oxygen; Phosphate; Polarstern; Polynya; Potentiometric titration; PS117; PS117_41-1; PS117_41-10; PS117_41-12; PS117_41-13; PS117_41-4; PS117_41-6; PS117_41-8; PS117_41-9; PS89; PS89/049-11; PS89/049-12; PS89/052-1; PS89/052-10; PS89/052-11; PS89/052-12; PS89/052-2; PS89/052-3; PS89/052-4; PS89/052-5; PS89/052-6; Ekström Ice Shelf; Weddell; Weddell Sea; Ice Shelf
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.946363; https://doi.org/10.1594/PANGAEA.946363

Discrete seawater samples in a Weddell Sea coastal polynya along the Ekström Ice Shelf were collected from two sets of repeat CTD casts, capturing tidal variability in the water column. One set was collected during RV POLARSTERN expedition PS89, between 8 and 11 January 2015. The second set was collected during RV POLARSTERN expedition PS117, between 11 and 12 January 2019. Dissolved inorganic carbon (DIC) and total alkalinity (TA) were measured using coulometric titration and potentiometric titration, respectively, on a VINDTA 3C system. DIC and TA have been normalised to salinity: nDIC and nTA. Nutrients were measured with UV-Vis spectrophotometry and a continuous gas-segmented flow auto-analyser.