Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky Universität Oldenburg ICBM https://uol.de/en/icbm https://ror.org/0060pja03 Karstensen Johannes jkarstensen@geomar.de 0000-0001-5044-7079 GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 Dilmahamod Ahmad Fehmi fdilmahamod@geomar.de 0000-0003-1110-940X GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 Hassoun Abed El Rahman 0000-0003-1940-215X GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 2026 Continuous optical chlorophyll-a and turbidity data along RV MARIA S. MERIAN cruise MSM129/2 dataset https://doi.org/10.1594/PANGAEA.992566 2026-02-26T09:43:14 Underway optical chlorophyll-a and turbidity data were collected along the cruise track with Sea-Bird Scientific ECO FLNTU sensors installed within two autonomous measurement containers, as part of the "Reinseewassersystem" (RSWS). The containers measure alternatingly. While one container is measuring, the other one is being cleaned. The boxes switched generally every 12 hours. The water inlet for the RSWS is at about 6.5 m below sea surface. Observed chlorophyll-a and turbidity data were both quality controlled. Analysis of the chlorophyll-a and turbidity data during parallel operation of the sensors in the two boxes showed significant differences between the sensors. The sensors were aligned resulting in consistent chlorophyll-a and turbidity time series. A consistent turbidity time series was only found until 25 Jun 2024. After this date, slight biofouling appears to be affecting the turbidity time series and data values were therefore flagged as probably bad data. The chlorophyll-a time series appears to be unaffected by biofouling. The corrected chlorophyll-a data were calibrated based on chlorophyll-a values from discrete water samples taken from a RSWS water outlet in the hangar. Samples were frozen and measured fluorometrically in the lab. The turbidity time series was also compared to suspended particulate matter from water samples, however, correlation was low and therefore the comparison not used for calibrating turbidity. The calibrated chlorophyll-a time series and corrected turbidity time series were compared against Globcolour CHL1 and TSM products, respectively. Details on all quality control steps, the calibration, and the comparison with satellite data can be found in the data processing report. The data set user should keep in mind that some parts of the time series might be affected by non-photochemical quenching, see data processing report. It was out of the scope of the quality control to flag or correct non-photochemical quenching. The resulting data set contains the original data and corresponding quality flags achieved by the quality control algorithm as well as the calibrated chlorophyll-a and corrected turbidity data with corresponding quality flags. The data source is given through the name of the active container. The data set contains data during transit time and station work. We recommend to use ship's speed to filter for only transit data. Karstensen Johannes jkarstensen@geomar.de 0000-0001-5044-7079 Dilmahamod Ahmad Fehmi fdilmahamod@geomar.de 0000-0003-1110-940X Balan Vasile-Sorin Behr Yurid Boskamp Grete Brechtelsbauer Stefanie stefanie.brechtelsbauer@jssj.de Glüsen Lasse Alexander Hassoun Abed El Rahman 0000-0003-1940-215X Klopfer Matthias Krahmann Gerd gkrahmann@geomar.de 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) report MARIA S. MERIAN-Berichte, Begutachtungspanel Forschungsschiffe MSM129/2 https://doi.org/10.48433/cr_msm129_2 54 pp Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 2026 Continuous optical chlorophyll-a and turbidity data along R/V MARIA S. MERIAN cruise MSM129/2 - Data Processing Report report Institute for Chemistry and Biology of the Marine Environment (ICBM), School of Mathematics and Science, Carl von Ossietzky Universität Oldenburg https://download.pangaea.de/reference/137960/attachments/DAM_DataProcessingReport_MSM129-2.pdf -52.702459999999974 -21.921519999999987 47.56099 64.19089 -47.02443400466251 56.5122596868337 2024-06-07T10:49:00 2024-07-06T08:47:00 6.5 6.5 horizontal profile DAM_Underway DAM Underway Research Data https://www.allianz-meeresforschung.de/kernbereiche/datenmanagement-und-digitalisierung#unterwegs DataHub DataHub Earth and Environment of the Helmholtz Association https://helmholtz.software/projects/datahub MSM129/2_0_Underway-15 47.56619 -52.70246 2024-06-07T10:49:00 64.15419 -21.94213 2024-07-06T08:47:00 MSM129/2 MSM129/2 LabSeaFlow2024 LabSeaFlow2024 St. John's, Canada 2024-06-07T00:00:00 2024-06-07 Reykjavik, Iceland 2024-07-06T00:00:00 2024-07-06 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Karstensen, Johannes Karstensen, Johannes Dilmahamod, Ahmad Fehmi Dilmahamod, Ahmad Fehmi doi:10.48433/cr_msm129_2 20240136 https://download.pangaea.de/reference/128694/attachments/MSM129_2_nav.png doi:10.1594/PANGAEA.972533 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Fluorometer, Sea-Bird Scientific, ECO FLNTU https://www.seabird.com/eco-flntu/product?id=60762467722 Optical tools & radiometric sensors WET Labs {Sea-Bird WETLabs} ECO FLBB scattering fluorescence sensor http://vocab.nerc.ac.uk/collection/L22/current/TOOL1361/ event was not logged in DSHIP 406153 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 Date/Time LATITUDE Latitude http://en.wikipedia.org/wiki/ISO_6709 Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 Latitude LONGITUDE Longitude http://en.wikipedia.org/wiki/ISO_6709 Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 Longitude DEPTH, water Depth water m depth http://purl.obolibrary.org/obo/PATO_0001595 water http://purl.obolibrary.org/obo/CHEBI_15377 Length L http://dbpedia.org/resource/Length Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 Depth water [m] Ship speed Ship sp kn Linear Velocity http://dbpedia.org/resource/Velocity Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 Ship sp [kn] Chlorophyll a Chl a µg/l hdl:10013/epic.32187.d001 chlorophyll a http://purl.obolibrary.org/obo/CHEBI_18230 Density http://dbpedia.org/resource/Density Fluorometer, Sea-Bird Scientific, ECO FLNTU https://www.seabird.com/eco-flntu/product?id=60762467722 Optical tools & radiometric sensors WET Labs {Sea-Bird WETLabs} ECO FLBB scattering fluorescence sensor http://vocab.nerc.ac.uk/collection/L22/current/TOOL1361/ Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 Chl a [µg/l] (Fluorometer, Sea-Bird Scienti...) Quality flag, chlorophyll a QF chl a chlorophyll a http://purl.obolibrary.org/obo/CHEBI_18230 Data quality control procedures according to Copernicus Marine in situ TAC BGC quality control group (2021) https://archimer.ifremer.fr/doc/00251/36232/ Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing QF chl a (QC flag meanings: 0:no QC, 1:...) Turbidity (Nephelometric turbidity unit) Turbidity NTU https://en.wikipedia.org/wiki/Turbidity Turbidity http://dbpedia.org/resource/Turbidity Fluorometer, Sea-Bird Scientific, ECO FLNTU https://www.seabird.com/eco-flntu/product?id=60762467722 Optical tools & radiometric sensors WET Labs {Sea-Bird WETLabs} ECO FLBB scattering fluorescence sensor http://vocab.nerc.ac.uk/collection/L22/current/TOOL1361/ Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 Turbidity [NTU] (Fluorometer, Sea-Bird Scienti...) Quality flag, turbidity QF turbidity Turbidity http://dbpedia.org/resource/Turbidity Data quality control procedures according to Copernicus Marine in situ TAC BGC quality control group (2021) https://archimer.ifremer.fr/doc/00251/36232/ Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing QF turbidity (QC flag meanings: 0:no QC, 1:...) Chlorophyll a Chl a µg/l hdl:10013/epic.32187.d001 chlorophyll a http://purl.obolibrary.org/obo/CHEBI_18230 Density http://dbpedia.org/resource/Density Fluorometer, Sea-Bird Scientific, ECO FLNTU; Calibration with samples measured according to Arar and Collins (1997) [EPA Method 445.0] https://www.seabird.com/eco-flntu/product?id=60762467722 Optical tools & radiometric sensors WET Labs {Sea-Bird WETLabs} ECO FLBB scattering fluorescence sensor http://vocab.nerc.ac.uk/collection/L22/current/TOOL1361/ Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 calibrated with discrete samples Chl a [µg/l] (calibrated with discrete samp...) Quality flag, chlorophyll a QF chl a chlorophyll a http://purl.obolibrary.org/obo/CHEBI_18230 Data quality control procedures according to Copernicus Marine in situ TAC BGC quality control group (2021) https://archimer.ifremer.fr/doc/00251/36232/ Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 calibrated; QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing QF chl a (calibrated; QC flag meanings:...) Turbidity (Nephelometric turbidity unit) Turbidity NTU https://en.wikipedia.org/wiki/Turbidity Turbidity http://dbpedia.org/resource/Turbidity Fluorometer, Sea-Bird Scientific, ECO FLNTU https://www.seabird.com/eco-flntu/product?id=60762467722 Optical tools & radiometric sensors WET Labs {Sea-Bird WETLabs} ECO FLBB scattering fluorescence sensor http://vocab.nerc.ac.uk/collection/L22/current/TOOL1361/ Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 corrected through sensor alignment Turbidity [NTU] (corrected through sensor alig...) Quality flag, turbidity QF turbidity Turbidity http://dbpedia.org/resource/Turbidity Data quality control procedures according to Copernicus Marine in situ TAC BGC quality control group (2021) https://archimer.ifremer.fr/doc/00251/36232/ Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 corrected; QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing QF turbidity (corrected; QC flag meanings: ...) Measurement container MC Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 Active container, MC1 or MC2 MC (Active container, MC1 or MC2) CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels ProcLevel2 PANGAEA data processing level 2 https://wiki.pangaea.de/wiki/Processing_levels#PANGAEA_data_processing_level_2 citable chlorophyll-a DAM Fluorescence turbidity Underway measurement DAMUnderwayResearchData author100628 author105513 author108480 author110090 author110091 author110092 author110094 author111116 author111519 author111520 author111521 author111522 author28597 author32921 author53811 author60965 author76508 author79576 author99632 basis650 campaign3377999 campaign50019 curlevel30 event3358058 geocode1599 geocode1600 geocode1601 geocode1619 inst20147 inst461 journal17183 license21 method16398 method16404 method16467 param185091 param2136 param32561 param501843 param509052 param52477 pi60965 proclevel30 project4399 project5026 ref133996 ref137960 term1073131 term1073594 term2301071 term2606205 term43792 term43863 term43876 term43975 term43980 term47459 term51596 term52591 term67649 term69214 term73731 term75910 term77707 term77756 topotype4