Biotic water-column characteristics for stations from the North-Western Weddell Sea, Bransfield Strait, and Drake Passage (POLARSTERN cruise PS 81, ANT-XXIX/3, January-March 2013) ...

• Main Authors: Vanreusel, Ann, Hauquier, Frejia, Beuselinck, Bart, Van Gansbeke, Dirk, Viaene, Niels, Veit-Köhler, Gritta
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Antarctic; Chlorophyll a; CTD; pigments; Southern Ocean; Water-column parameters; Event label; Date/Time of event; Latitude of event; Longitude of event; Elevation of event; Cruise/expedition; Station label; Sample type; DEPTH, water; Date; Sample volume; CTD/Rosette; Fluorometry; ANT-XXIX/3; Polarstern; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarc*; Antarctic Peninsula; Bransfield Strait; Drake Passage; Sea ice; Weddell Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.932771; https://doi.pangaea.de/10.1594/PANGAEA.932771

Around the Antarctic Peninsula (North-Western Weddell Sea, Bransfield Strait, Drake Passage) water samples for measurements of chlorophyll-a were collected with Niskin bottles mounted on a CTD rosette. At each station samples were taken at two depths, the chlorophyll-a maximum (Cmax, defined as the water depth with maximum fluorescence detected during in-situ profiles) and close to the seafloor (bottom). Water samples were poured over a 100-µm sieve to remove larger particles and filtered over glass fibre filters GF/C at approximately 250 mbar. Colouring of filters determined the amount of sea water used (3–5l). Filters were stored at −80°C. Chloroplastic pigments were extracted with 10ml acetone (90%), determined using a fluorimeter and expressed in µg/l. For details see Hauquier et al. (2015) and Veit-Köhler et al. (2018). ...