Oelker, Julia; Voß, Daniela; Henkel, Rohan; Badewien, Thomas Henry (2026): Chlorophyll a and phaeophytin a measurements from discrete water samples during RV MARIA S. MERIAN cruise MSM139 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995260 (DOI registration in progress)
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Published: 2026-06-15
Abstract:
This dataset was collected during the cruise MSM139 (GreenHab, 25.07 - 27.08.2025) with RV MARIA S. MERIAN from Reykjavic, Iceland to Reykjavik, Iceland. The dataset contains chlorophyll-a measurements [µg/l] from water samples directly collected from the seawater supply (Reinseewassersystem, RSWS) of the ship to calibrate the fluorometers of the RSWS system. 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 by 90% acetone method. Concentrations were calculated from fluorescence measured with a pre-calibrated Turner Design TD 7200-02 laboratory fluorometer (EPA445.0, Turner Manual).
Keyword(s):
Related to:
John, Uwe; Christensen, Anneliese; Becks, Lutz; Thielecke, Antonia; Voß, Daniela; Henkel, Rohan; Oelker, Julia; Thome, Pauline; Andipalagan, Mathiroopini; Schmitt-Kopplin, Philippe; Clarke, Dave; Burfeid-Castellanos, Andrea M; Eikrem, Wenche; Lundholm, Nina; Nagai, Satoshi; Honorato, Ricardo; Kühne, Nancy; Kopplin, Leila (2025): Investigate and evaluate the risks of harmful algae blooms in Greenlandic waters due to climate change: Assessment of range expansion and HAB population connectivity, Cruise No. MSM139, 25.07.2025 - 27.08.2025, Reykjavík (Iceland) - Reykjavík (Iceland). MARIA S. MERIAN-Berichte, Begutachtungspanel Forschungsschiffe, MSM139, 50 pp, https://doi.org/10.48433/cr_msm139
Oelker, Julia; Dietrich, Kathrin; Voß, Daniela; Henkel, Rohan; Badewien, Thomas Henry (2026): Total suspended matter, particulate organic matter and particulate inorganic matter from discrete water samples during RV MARIA S. MERIAN cruise MSM139 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995261
Oelker, Julia; John, Uwe; Henkel, Rohan; Voß, Daniela (2026): Continuous optical chlorophyll-a and turbidity data along RV MARIA S. MERIAN cruise MSM139 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995178
Oelker, Julia; Voß, Daniela; Henkel, Rohan; Badewien, Thomas Henry (2026): Chlorophyll a and phaeophytin a measurements from discrete bottle water samples during RV MARIA S. MERIAN cruise MSM139 (25.07. 2025 - 27.08.2025, GreenHab) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995241
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)
Turner Designs (2019): Trilogy Laboratory Fluorometer User's Manual, Version 1.7. San Jose, CA, USA, 998-7210.pdf
Documentation:
Non-Exclusive Licence No. G25-007 for Utilization of Greenland Genetic Resources (2025). Naalakkersuisut - Government of Greenland, Genetic Resource License No. G25-007.pdf
Funding:
Federal Ministry of Education and Research (BMBF), grant/award no. 03F0945A: GreenHAB: Risiken der durch den Klimawandel verursachten schädlichen Algenblüte in grönländischen Gewässern
Coverage:
Median Latitude: 66.413913 * Median Longitude: -51.636818 * South-bound Latitude: 59.681340 * West-bound Longitude: -58.713750 * North-bound Latitude: 75.003120 * East-bound Longitude: -32.318500
Date/Time Start: 2025-07-28T06:10:00 * Date/Time End: 2025-08-25T05:54:00
Minimum DEPTH, water: 4.0 m * Maximum DEPTH, water: 4.0 m
Event(s):
MSM139_0_Underway-8 * Latitude Start: 59.681340 * Longitude Start: -44.185220 * Latitude End: 61.956080 * Longitude End: -32.318500 * Date/Time Start: 2025-07-28T06:10:00 * Date/Time End: 2025-08-25T05:54:00 * Campaign: MSM139 (GreenHab) * Basis: Maria S. Merian * Method/Device: Water sample (WS) * Comment: event was not logged in DSHIP
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Oelker, Julia | Geocode | ||
| 2 | LATITUDE | Latitude | Oelker, Julia | Geocode | ||
| 3 | LONGITUDE | Longitude | Oelker, Julia | Geocode | ||
| 4 | Sample ID | Sample ID | Oelker, Julia | |||
| 5 | DEPTH, water | Depth water | m | Oelker, Julia | Geocode | |
| 6 | Chlorophyll a | Chl a | µg/l | Oelker, Julia | Fluorometer, Turner Designs, Trilogy 7200-002 [EPA Method 445.0] | |
| 7 | Phaeophytin a | Phaeophytin a | µg/l | Oelker, Julia | Fluorometer, Turner Designs, Trilogy 7200-002 [EPA Method 445.0] | |
| 8 | Phaeophytin a/Chlorophyll a ratio | Phaeophytin a/Chl a | Oelker, Julia | Fluorometer, Turner Designs, Trilogy 7200-002 |
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:
128 data points