Absorption coefficients by coloured dissolved organic matter from North Sea to Fram Strait measured underway with a Liquid Waveguide Capillary Cell system during POLARSTERN cruise PS99.1

DOI

Water samples were taken during North Sea to Fram Strait expedition PS99.1 with RV Polarstern from 14 to 23 Jun 2016. Water samples were collected from the ship's seawater supply pumped through teflon tubing from about 11m depth during underway as described in Liu et al (2018). The same water samples were measured as in Liu et al. (2021). Water samples for CDOM absorption analysis were filtered through 0.2 µm filters and analysed onboard with a 2.5-m path length liquid waveguide capillary cell system (LWCC, WPI) following Levering et al. (2017). Details on method adaptation to our instrumentation set-up are provided in Alvarez et al. (2022). Salinity data were extracted from https://doi.pangaea.de/10.1594/PANGAEA.873156.

Further specifications on the measurements:a) Instrument set-up:light source: UV-VIS lamp (Mikropack DH-2000 Deuterium-Tungsten Halogen Light Source, Artisan Technology Group, USA)cuvette: Liquid Waveguide Capillary Cell system (LWCC, World Precision Instruments Inc, USA) with 197.8 cm pathlengthdetector: photodiode array spectrometer (Sensline AVASPEC-2048-RS, Avantes, Netherlands)pump: Ismatec Reglo Analogb) configurations:wavelength range of scan and resolution: 200.0-760.0 nm, 0.3 nm.slit band width: 1 nm.Dark current was recorded before each sample measurement and samples were measured against reference of MQ three times.c) further specifications about data analysis:interpolated wavelength range and resolution: 350-730 nm, 1nm. Salinity correction applied based on CTD and thermosalinograph data.

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.938494
Related Identifier https://doi.pangaea.de/10.1594/PANGAEA.938491
Related Identifier https://doi.org/10.1364/AO.56.006357
Related Identifier https://doi.org/10.1594/PANGAEA.905502
Related Identifier https://doi.org/10.1364/OE.26.00A678
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.938494
Provenance
Creator Bracher, Astrid; Liu, Yangyang; Hellmann, Sebastian; Röttgers, Rüdiger
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2021
Funding Reference German Science Foundation, 268020496
Rights Data access is restricted (moratorium, sensitive data, license constraints)
OpenAccess false
Representation
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 13056 data points
Discipline Earth System Research
Spatial Coverage (3.417W, 56.770S, 18.180E, 78.113N)
Temporal Coverage Begin 2016-06-14T15:12:00Z
Temporal Coverage End 2016-06-23T03:30:00Z