Spectrophotometric measurements of absorption coefficients by non-algal particles in the Atlantic Southern Ocean during RV POLARSTERN cruise PS103 in Dec 2016 to Jan 2017

• Main Authors: Bracher, Astrid, Liu, Yangyang
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: absorption; Absorption coefficient; non-algal particles; at 350 nm; at 352 nm; at 354 nm; at 356 nm; at 358 nm; at 360 nm; at 362 nm; at 364 nm; at 366 nm; at 368 nm; at 370 nm; at 372 nm; at 374 nm; at 376 nm; at 378 nm; at 380 nm; Arctic; Southern Ocean
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.938196; https://doi.org/10.1594/PANGAEA.938196

Water samples were taken during the Southern Atlantic expedition PS103 with RV Polarstern from 17 Dec 2016 to 28 Jan 2017. Water samples were collected from CTD Niskin bottles at six different depths from the upper 100 to 180 m and additionally from the ship's seawater supply pumped through teflon tubing from about 11m depth during underway further described in Bracher (2019). All collected samples were filtered through 25 cm Whatman GF/F filters, respectively, under low-vacuum pressure (below 200 mbar). Blank filters were collected by soaking them in 0.2um filtered seawater. Measurements for particulate and non-algal (NAP) absorption were performed directly after filtration the quantitative filtration techniques-intergrative cavity measurement device and procedure from Röttgers et al. (2016) as described in Liu et al. (2018). Phytoplankton absorption (aph) was derived by subtracting the NAP from the particulate absorption.