PANGAEA_995665 Chlorophyll a and phaeophytin a measurements from discrete water samples during RV MARIA S. MERIAN cruise MSM129/2 Oelker, Julia; Karstensen, Johannes; Dilmahamod, Ahmad Fehmi; Albinus, Michelle; Hassoun, Abed El Rahman Chlorophyll a and phaeophytin a measurements from discrete water samples during RV MARIA S. MERIAN cruise MSM129/2 2026-06-26 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.995665 Investigator Julia Oelker julia.oelker@uni-oldenburg.de Investigator Michelle Albinus michelle.albinus@uol.de Earth Science DATE/TIME LATITUDE LONGITUDE DEPTH, water Chlorophyll a Phaeophytin a Phaeophytin a/Chlorophyll a ratio geoscientificInformation Chlorophyll a FerryBox Fluorescence MSM129/2 MSM129/2_0_Underway-11 Phaeophytin a CTD, Sea-Bird, SBE 911plus Fluorometer, Turner Designs, Trilogy 7200-002 [EPA Method 445.0] Fluorometer, Turner Designs, Trilogy 7200-002 Maria S. Merian 2024-06-07 2024-07-04 Complete 48.41254 61.03255 -52.663869999999974 -33.42389000000003 6.5 m (DEPTH, water) 6.5 m (DEPTH, water) unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 84 data points text/tab-separated-values Karstensen, Johannes; Dilmahamod, Ahmad Fehmi; Balan, Vasile-Sorin; Behr, Yurid; Boskamp, Grete; Brechtelsbauer, Stefanie; Glüsen, Lasse Alexander; Hassoun, Abed El Rahman; Klopfer, Matthias; Krahmann, Gerd; Lösel, Christiane; Martins, Wiebke; Miller, Carl; O'Brien, Emma; Olbricht, Hannah; Ripke, Kim; Sander, Neele; Witt, René (2025): Investigating large to submesoscale flow in the Labrador Sea, Cruise No. MSM129/2, 07. June 2024 - 06. July 2024, St. John's (Canada) - Reykjavik (Iceland). MARIA S. MERIAN-Berichte, Begutachtungspanel Forschungsschiffe, MSM129/2, 54 pp, https://doi.org/10.48433/cr_msm129_2 Oelker, Julia; Karstensen, Johannes; Dilmahamod, Ahmad Fehmi; Hassoun, Abed El Rahman (2026): Continuous optical chlorophyll-a and turbidity data along RV MARIA S. MERIAN cruise MSM129/2 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.992566 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, https://download.pangaea.de/reference/107393/attachments/M445_0.PDF Turner Designs (2019): Trilogy Laboratory Fluorometer User's Manual, Version 1.7. San Jose, CA, USA, https://download.pangaea.de/reference/124949/attachments/998-7210.pdf

This dataset was collected during the cruise MSM129/2 with RV MARIA S. MERIAN from St. John's, Canada to Reykjavik, Iceland. It contains chlorophyll-a measurements [µg/l] from water samples collected from the seawater supply (Reinseewassersystem, RSWS) to calibrate the fluorometers of the RSWS system. The outflow of a PocketFerrybox that was connected to the seawater supply in the hangar was used for sampling. It takes a substantial amount of time for the water to reach the hanger from the intake point. The time delay between the sensor readings of the RSWS and the PocketFerrybox was determined and the timestamps of the water sampling were adjusted accordingly. Given latitute and longitude refer to this corrected timestamp. The original time of water sampling in the hangar is given as an additional column with the comment time of sampling. 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). ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.995665"!

http://en.wikipedia.org/wiki/ISO_6709 LATITUDE http://en.wikipedia.org/wiki/ISO_6709 LONGITUDE http://en.wikipedia.org/wiki/ISO_8601 DATE/TIME https://cfpub.epa.gov/si/si_public_record_report.cfm?Lab=NERL&dirEntryId=309417 Method 445.0 In Vitro Determination of Chlorophyll a and Pheophytin ain Marine and Freshwater Algae by Fluorescence https://doi.org/10.48433/cr_msm129_2 Investigating large to submesoscale flow in the Labrador Sea, Cruise No. MSM129/2, 07. June 2024 - 06. July 2024, St. John's (Canada) - Reykjavik (Iceland) https://doi.pangaea.de/10.1594/PANGAEA.992566 Continuous optical chlorophyll-a and turbidity data along RV MARIA S. MERIAN cruise MSM129/2 https://en.wikipedia.org/wiki/RV_Maria_S._Merian Maria S. Merian https://hdl.handle.net/10013/epic.32187.d001 Chlorophyll a https://www.seabird.com/products/sbe-911plus-ctd?id=60761421595&callback=qs CTD, Sea-Bird, SBE 911plus DIF 9.4 2026-06-26 2026-06-29