Dissolved and particulate combined carbohydrates, pH, inorganic ions, CDOM and particulate absorption of SML and bulk water in Arctic surface seawater and melt ponds ...

• Main Authors: Zeppenfeld, Sebastian, Bracher, Astrid, Wiegmann, Sonja, Zeising, Moritz, Fuchs, Susanne, van Pinxteren, Manuela, Herrmann, Hartmut
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Arctic; bulk water; CDOM; DCCHO; dissolved combined carbohydrates; marginal ice zone; melt ponds; particulate absorption; particulate combined carbohydrates; PASCAL; PCCHO; pH; Polarstern; PS106; sea surface microlayer; SML; Sample ID; Sample type; DEPTH, water; DATE/TIME; LATITUDE; LONGITUDE; Fucose; Galactosamine; Rhamnose; Arabinose; Glucosamine; Galactose; Glucose; Xylose; Mannose; Muramic acid; Galacturonic acid; Glucuronic acid; Carbohydrates, dissolved combined; Carbohydrates, particulate hydrolyzable; Chloride; Sodium; Absorption coefficient, colored dissolved organic matter at 350 nm; Absorption coefficient, colored dissolved organic matter at 443 nm; Spectral slope of colored dissolved organic matter absorption, 275-295 nm; Spectral slope of colored dissolved organic matter absorption, 350-400 nm; Ratio between S275-295 nm and S350-400 nm; Absorption coefficient, total particulate matter, at 440 nm; Absorption coefficient, non-algal particles, at 440 nm; Absorption coefficient, phytoplankton, at 440 nm; Underway cruise track measurements; High performance anion exchange chromatography with pulsed amperometric detection HPAEC-PAD; PS106/1; Arctic Ocean; Barents Sea; Fram Strait; Phytoplankton
• Online Access: https://dx.doi.org/10.1594/pangaea.961004; https://doi.pangaea.de/10.1594/PANGAEA.961004

Arctic sea surface microlayer (SML) and bulk water samples were collected during the PASCAL campaign in the Fram Strait, Barents Sea and central Arctic Ocean on board the German icebreaker RV Polarstern from May until July 2017. SML samples were collected using the glass plate technique, corresponding bulk (subsurface) samples were collected at a defined depth of of 1 m, or at the bottoms of some closed melt ponds, using the telescopic rod method. Following types of water samples were diffentiated: ice-free ocean, leads/polynyas within the pack ice, the marginal ice zone (MIZ) and melt ponds. Following chemical parameters were determined: dissolved combined carbohydrates (DCCHO), particulate combined carbohydrates (PCCHO), pH, sodium, chloride, CDOM and particulate absorption. DCCHO concentrations were measured from filtered (0.2 µm) seawater after a desalination using electro-dialysis and high-performance anion exchange chromatography coupled with pulsed amperometric detection (HPAEC-PAD). PCCHO ... : <0 = below detection limit, empty cells = not determined ...