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 (DOI registration in progress)
Always quote citation above when using data! You can download the citation in several formats below.
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 Reykjavik, Iceland to Reykjavik, Iceland. The dataset contains chlorophyll a measurements [µg/L] from water samples collected from discrete sampling via CTD. In total, 33 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 TD7200-02 laboratory fluorometer (EPA445.0, Turner Manual). Chief Scientist of RV Maria S Merian cruise MSM139: Dr.Uwe John, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI).
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; 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
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: 67.755994 * Median Longitude: -52.116549 * South-bound Latitude: 59.776200 * West-bound Longitude: -58.721000 * North-bound Latitude: 75.001100 * East-bound Longitude: -44.493100
Date/Time Start: 2025-07-28T08:03:00 * Date/Time End: 2025-08-21T16:49:00
Minimum Elevation: -1074.0 m * Maximum Elevation: -83.0 m
Event(s):
MSM139_1-1 * Latitude: 59.776207 * Longitude: -44.493185 * Date/Time: 2025-07-28T08:18:00 * Elevation: -242.0 m * O2A Registry URI: sensor.awi.de * Campaign: MSM139 (GreenHab) * Basis: Maria S. Merian * Method/Device: CTD/Rosette (CTD-RO)
MSM139_2-1 * Latitude: 60.622185 * Longitude: -46.535452 * Date/Time: 2025-07-29T08:08:00 * Elevation: -89.0 m * O2A Registry URI: sensor.awi.de * Campaign: MSM139 (GreenHab) * Basis: Maria S. Merian * Method/Device: CTD/Rosette (CTD-RO)
MSM139_3-1 * Latitude: 60.860580 * Longitude: -46.094315 * Date/Time: 2025-07-29T14:44:00 * Elevation: -319.0 m * O2A Registry URI: sensor.awi.de * Campaign: MSM139 (GreenHab) * Basis: Maria S. Merian * Method/Device: CTD/Rosette (CTD-RO)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Oelker, Julia | Station label, Dship system | ||
| 2 | DATE/TIME | Date/Time | Oelker, Julia | Geocode | ||
| 3 | LATITUDE | Latitude | Oelker, Julia | Geocode | ||
| 4 | LONGITUDE | Longitude | Oelker, Julia | Geocode | ||
| 5 | ELEVATION | Elevation | m a.s.l. | Oelker, Julia | CTD, Sea-Bird, SBE 911plus | Geocode |
| 6 | DEPTH, water | Depth water | m | Oelker, Julia | CTD, Sea-Bird, SBE 911plus | Geocode |
| 7 | Chlorophyll a | Chl a | µg/l | Oelker, Julia | Fluorometer, Turner Designs, Trilogy 7200-002 [EPA Method 445.0] | |
| 8 | Phaeophytin a | Phaeophytin a | µg/l | Oelker, Julia | Fluorometer, Turner Designs, Trilogy 7200-002 [EPA Method 445.0] | |
| 9 | 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:
387 data points