Chlorophyll a, particulate organic carbon (POC), particulate organic nitrogen (PON), particulate organic phosphorous (POP) and Surfactants measurements from the central arctic

• Main Author: Robinson, Tiera-Brandy
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: After Wasmund et al. (2006); After Wetzel and Likens (2000); Arctic; Arctic Ocean 2018; MOCCHA; Carbon; organic; particulate; Carlo Erba Flash 1112 elemental analyser; Central Arctic; Chlorophyll a; Coomassie stainable particles; Date/Time of event; Event label; Isoprenoid glycerol dialkyl glycerol tetraether (peak area); per unit sediment mass; Latitude of event; Longitude of event; Microbiology-Ocean-Cloud-Coupling in the High Arctic; Nitrogen; Oden; Oden_AO2018; Oden_AO2018_01; Oden_AO2018_02; Oden_AO2018_03; Oden_AO2018_04; Oden_AO2018_05; Oden_AO2018_06; Oden_AO2018_07; Oden_AO2018_08; Oden_AO2018_09; Oden_AO2018_10; Oden_AO2018_11; Oden_AO2018_12; OLS; open leads; Open-Line-System; Phosphorus; SML; Surfactants; Arctic Ocean; Oldenburg; ice pack
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.950655

As part of the MOCCHA 2018 campaign onboard I/B Oden, Sea surface microlayer (SML) and underlying water (ULW) samples were taken from an open lead system in the central arctic. Sampling occured during the autumn freeze-up from 18.08.18 - 08.09.18. Latitude ranged from 88.7644-89.5474 degrees and longitude ranged from 38.1087-45.7652 degrees as the ice pack moved over time, elevevation remained 0. Sea surface microlayer samples were collected using the glass plate technique (Harvey and Burzell, 1972, doi:10.4319/lo.1972.17.1.0156) via rotating glass disks equipped to a catamaran and underlying water samples were collected from 1 meter depth. Seven variables were sampled for; transparent exopolymer particles (TEP), coomassie stainable particles (CSP), surfactants, chlorophyll a, particulate organic carbon (POC), particulate organic nitrogen (PON) and particulate organic phosphorous (POP). Their concentrations are presented here in micrograms per litre. sea surface microlayer (SML) and undrlaying water (ULW) samples were brought back to a wet lab onboard I/B Oden. All samples were stored in their respective states until processing and analysis could be done after the expedition in laboratories of the University of Oldenburg. Chlorophyll a (Chl a) was measured by filtering 500 - 1000mL of seawater on to pre-combusted (4 h, 450°C) GF/F filters (Whatman). The filters were stored frozen (-18 °C). Chl a was then analysed after the expedition using a fluorometer (Jenway 6285, precision of 0.01± < 1 ng/mL) following Wasmund et al. (2006). Samples for particulate organic carbon (POC), nitrogen (PON) and phosphorous (POP), collectively particulate organic matter (POM), were filtered onto acid washed and pre-combusted GF/F filters (Whatman) and stored at -18 ◦C. For analysis, filters for POC and PON were dried at 60°C for 3days, put in tin capsules and measured using an elemental analyser (Thermo, Flash EA 1112 and Elementar Analysensysteme, precision of 0.01 ‰). POP was measured by molybdate reaction after digestion with ...