Voß, Daniela; Pieck, Daniela; Mascarenhas, Veloisa J; Zielinski, Oliver (2025): Chlorophyll a measurements from discrete water samples during RV MARIA S. MERIAN cruise MSM65 (2017-06-25 – 2017-07-19, GREENHAB II) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.981677 (DOI registration in progress)
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Published: 2025-05-06
Abstract:
This dataset was collected during the cruise MSM65 (GREENHAB II, 2017-06-25 – 2017-07-19) with RV MARIA S MERIAN from St. John's, Canada to Nuuk, Greenland. It contains chlorophyll a measurements [µg/L] from water samples collected from discrete sampling via CTD. In total, 46 stations have been sampled from various depth. To obtain chl-a concentrations water samples were filtered onboard through 0.7 μm pore size, glass fiber filters (Whatmann GF/F) under low vacuum. Filters were frozen immediately at -80 °C until extraction in laboratory via 90% acetone. Concentrations were calculated from fluorescence measured with a pre-calibrated Turner Design TD700 laboratory fluorometer (EPA445.0, Arar & Collins, 1997).
Keyword(s):
Related to:
Zielinski, Oliver; Anderson, Donald M; Braun, Axel; Cembella, Allan; D'Entremont, Nicole; Donnelly, Jeffrey P; Fischer, Alexis D; Henkel, Rohan; Koch, Boris P; Krieger, E; Krock, Bernd; Leefmann, Tim; Mascarenhas, Veloisa J; Meier, Daniela; Müller, Annegret; Pieck, Martin; Rhein, Monika; Rieger, Niclas; Siddall, Greg; Sültenfuß, Jürgen; Tillmann, Urban; Tillmann, Anette; Trefault, Nicole; Vásquez, Mónica; Voß, Daniela; Wallace, Douglas WR (2017): Do harmful algae have a northern limit? Cruise No. MSM65 25.06.2017 - 19.07.2017, St John's (Canada) - Nuuk (Greenland), GREENHAB II. MARIA S. MERIAN-Berichte, Gutachterpanel Forschungsschiffe, MSM65, 61 pp, https://doi.org/10.2312/cr_msm65
References:
Arar, E J; Collins, G B (1997): Method 445.0 In Vitro Determination of Chlorophyll a and Pheophytin ain Marine and Freshwater Algae by Fluorescence. U.S. Environmental Protection Agency, Washington, DC, 1997, https://cfpub.epa.gov/si/si_public_record_report.cfm?Lab=NERL&dirEntryId=309417 (M445_0.PDF)
Funding:
German Research Foundation (DFG), grant/award no. 273739224: Priority Programme 1889 Regional Sea Level Change and Society
Ministry for Science and Culture of Lower Saxony (MWK), grant/award no. VWZN3175: Coastal ocean darkening – Light availability in the past and future marine environment
Coverage:
Median Latitude: 67.141255 * Median Longitude: -53.066186 * South-bound Latitude: 56.823617 * West-bound Longitude: -59.290209 * North-bound Latitude: 75.000558 * East-bound Longitude: -50.219042
Date/Time Start: 2017-06-28T01:43:40 * Date/Time End: 2017-07-17T15:35:20
Minimum DEPTH, water: 3 m * Maximum DEPTH, water: 90 m
Event(s):
MSM65_4-1 * Latitude: 56.823630 * Longitude: -52.219120 * Date/Time: 2017-06-28T02:59:00 * Elevation: -3534.0 m * Location: Labrador Sea * Campaign: MSM65 (GREENHAB II) * Basis: Maria S. Merian * Method/Device: CTD/Rosette (CTD-RO)
MSM65_6-1 * Latitude: 63.933090 * Longitude: -52.933580 * Date/Time: 2017-06-29T12:03:00 * Elevation: -68.0 m * Location: Davis Strait * Campaign: MSM65 (GREENHAB II) * Basis: Maria S. Merian * Method/Device: CTD/Rosette (CTD-RO)
MSM65_7-1 * Latitude: 63.933300 * Longitude: -52.383650 * Date/Time: 2017-06-29T16:38:00 * Elevation: -226.0 m * Location: Davis Strait * Campaign: MSM65 (GREENHAB II) * Basis: Maria S. Merian * Method/Device: CTD/Rosette (CTD-RO)
Comment:
Chief Scientist of MSM65: Prof. Dr. Oliver Zielinski, Institute for Chemistry and Biology of the Marine Environment
Financial support was kindly provided by the Deutsche Forschungsgemeinschaft (DFG), Senatskommission Ozeanographie (MerMet 15-85 Zielinski). Additional financial support was provided through funding from AWI (PACES program), WHOI and ICBM.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Voß, Daniela | |||
| 2 | DATE/TIME | Date/Time | Voß, Daniela | Geocode | ||
| 3 | LATITUDE | Latitude | Voß, Daniela | Geocode | ||
| 4 | LONGITUDE | Longitude | Voß, Daniela | Geocode | ||
| 5 | Depth, bathymetric | Bathy depth | m | Voß, Daniela | ||
| 6 | DEPTH, water | Depth water | m | Voß, Daniela | Geocode – Depth, sample | |
| 7 | Chlorophyll a | Chl a | µg/l | Voß, Daniela | Fluorometer, Turner Design, TD-700 | |
| 8 | Phaeophytin a | Phaeophytin a | µg/l | Voß, Daniela | Fluorometer, Turner Design, TD-700 | |
| 9 | Phaeophytin a/chlorophyll a ratio | Phaeophytin a/Chl a | Voß, Daniela | Calculated |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
552 data points