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 Bach Wolfgang wbach@uni-bremen.de https://www.marum.de/en/Wolfgang-Bach.html 0000-0002-3099-7142 MARUM - Center for Marine Environmental Sciences, University Bremen MARUM http://www.marum.de/ https://ror.org/04ers2y35 2025 Continuous optical chlorophyll-a and turbidity data along RV SONNE cruise SO311 dataset https://doi.org/10.1594/PANGAEA.988301 2025-12-19T06:07:15 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 systems, called self-cleaning monitoring boxes (SMBs). The SMBs measure alternatingly. While one box is measuring, the other one is being cleaned. The boxes switched generally every 6 hours. The water inlet for the SMBs is at about 4 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 fairly consistent chlorophyll-a and turbidity time series. A comparison for the corrected chlorophyll-a with satellite data using the GlobColour CHL1 product is provided. Correlation with CHL1 is high, however, the CHL1 data are systematically 0.08µg/L higher. Details on all quality control steps and the comparison with satellite data can be found in the data processing report. Note that the instruments are factory-calibrated, however, no post-calibration was performed due to missing reference data. Absolute values should be challenged. Additionally, 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 corrected chlorophyll-a and turbidity data with corresponding quality flags. The data source is given through the name of the active SMB. The data set contains data during transit time and station work. We recommend to use ship's speed to filter for only transit data. Bach Wolfgang wbach@uni-bremen.de https://www.marum.de/en/Wolfgang-Bach.html 0000-0002-3099-7142 Keith Manuel manuel.keith@fau.de 0000-0002-3874-0405 Falkenberg Jan Johannes jan.falkenberg@fau.de 0000-0001-6322-6267 Schleifer Bernd Baumann Nils Höß Alica Hampel Fabian Reiser Hans Berndt Paul pberndt@uni-bremen.de Maak Joely Marie 0009-0000-6111-582X Von der Gracht Mira Wallrath Tino Röhler Aaron aroehler@uni-bremen.de Röhler Fanny Meyerdierks Anke ameyerdi@mpi-bremen.de 0000-0002-8834-5446 Recke Charlotte Rooyakkers Shane Palmer Neville Bagnasco Alessio McKenzie Kelsey Scheffler Johannes Guerra Braga Carlos Henriq Eifried Markus Bergenthal Markus Fröhlich Siefke Gopikrishnan Arunima Mai Hoang Anh Ahrlich Frauke Schmidt Werner Krahl Julia Schulze Marius Reuter Michael Meyer-Schack Birgit 2025 Scientific Drilling of Brothers Volcano, Kermadec Arc, New Zealand, to Investigate Hydrothermal Processes in an Active Submarine Island Arc Volcano, Cruise No. SO311, 26.03.2025 - 01.05.2025, Wellington (New Zealand) - Auckland (New Zealand) report SONNE-Berichte, Begutachtungspanel Forschungsschiffe SO311 https://doi.org/10.48433/cr_so311 148 pp Oelker Julia julia.oelker@uni-oldenburg.de 0000-0002-0783-3617 2025 Continuous optical chlorophyll-a and turbidity data along RV SONNE cruise SO311 - 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/137074/attachments/DAM_DataProcessingReport_SO311.pdf 174.78696 -179.50768 -41.72 -32.50012 179.03385134201207 -34.939013045718966 2025-03-25T19:00:00 2025-04-30T18:59:00 4.0 4.0 horizontal profile DAM_Underway DAM Underway Research Data https://www.allianz-meeresforschung.de/en/activities/data-management-and-digitalisation/underway-research-data DataHub DataHub Earth and Environment of the Helmholtz Association https://helmholtz.software/projects/datahub Bundesministerium für Bildung und Forschung BMBF https://www.bmftr.bund.de https://doi.org/10.13039/501100002347 03F0935C Unterwegsdaten-2; Vorhaben: Aufbereitung und Kuration von Unterwegs- und Forschungsmissionsdaten bio-optischer Sensoren (Fluorometer) https://foerderportal.bund.de/foekat/jsp/SucheAction.do?actionMode=view&fkz=03F0935C SO311_0_Underway-6 -41.26829 174.78696 2025-03-25T19:00:00 -36.6626 174.91384 2025-04-30T18:59:00 SO311 DRILL BROTHERS Wellington, New Zealand 2025-03-26T00:00:00 Auckland, New Zealand 2025-05-01T00:00:00 Sonne_2 https://uol.de/icbm/forschungsplattformen-schiffe/sonne DBBE 9633927 Bach, Wolfgang doi:10.48433/cr_so311 20250004 https://download.pangaea.de/reference/133500/attachments/SO311_nav.png doi.10.1594/PANGAEA.982663 Sonne_2 https://uol.de/icbm/forschungsplattformen-schiffe/sonne DBBE 9633927 Fluorometer, Sea-Bird Scientific, ECO FLNTU https://bornhoeft.de/wp-content/uploads/2025/02/WetLabs-ECO-FLNTU.pdf fluorometers http://vocab.nerc.ac.uk/collection/L05/current/113/ optical backscatter sensors http://vocab.nerc.ac.uk/collection/L05/current/123/ Optical tools & radiometric sensors WET Labs {Sea-Bird WETLabs} ECO FLNTU combined fluorometer and turbidity sensor http://vocab.nerc.ac.uk/collection/L22/current/TOOL0215/ event was not logged in DSHIP 429742 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://bornhoeft.de/wp-content/uploads/2025/02/WetLabs-ECO-FLNTU.pdf fluorometers http://vocab.nerc.ac.uk/collection/L05/current/113/ optical backscatter sensors http://vocab.nerc.ac.uk/collection/L05/current/123/ Optical tools & radiometric sensors WET Labs {Sea-Bird WETLabs} ECO FLNTU combined fluorometer and turbidity sensor http://vocab.nerc.ac.uk/collection/L22/current/TOOL0215/ 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://bornhoeft.de/wp-content/uploads/2025/02/WetLabs-ECO-FLNTU.pdf fluorometers http://vocab.nerc.ac.uk/collection/L05/current/113/ optical backscatter sensors http://vocab.nerc.ac.uk/collection/L05/current/123/ Optical tools & radiometric sensors WET Labs {Sea-Bird WETLabs} ECO FLNTU combined fluorometer and turbidity sensor http://vocab.nerc.ac.uk/collection/L22/current/TOOL0215/ 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; Sensor alignment correction according to Data Processing Report 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 Chl a [µg/l] (corrected through sensor alig...) 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 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 chl a (corrected; 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://bornhoeft.de/wp-content/uploads/2025/02/WetLabs-ECO-FLNTU.pdf fluorometers http://vocab.nerc.ac.uk/collection/L05/current/113/ optical backscatter sensors http://vocab.nerc.ac.uk/collection/L05/current/123/ Optical tools & radiometric sensors WET Labs {Sea-Bird WETLabs} ECO FLNTU combined fluorometer and turbidity sensor http://vocab.nerc.ac.uk/collection/L22/current/TOOL0215/ 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, SMB_A or SMB_B MC (Active container, SMB_A or SMB_B) 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 author105010 author109538 author112129 author112130 author112131 author112132 author112133 author112134 author112135 author112136 author112137 author112138 author112139 author112140 author112141 author112430 author30038 author34884 author35202 author35258 author39856 author40771 author43236 author57788 author60965 author61741 author61743 author61763 author68910 author77173 author79585 author82894 author85155 author86351 award5137 basis5064 campaign3395008 campaign49457 curlevel30 event3335723 funder276 geocode1599 geocode1600 geocode1601 geocode1619 inst277 inst461 journal17181 license21 method16398 method16404 method17589 param185091 param2136 param32561 param501843 param509052 param52477 pi60965 proclevel30 project4399 project5026 ref134633 ref137074 term1073131 term1073594 term2299476 term2299530 term2301068 term2301071 term2606205 term37891 term43792 term43863 term43876 term43975 term43980 term47459 term49429 term51596 term52591 term67649 term69214 term73731 term75910 topotype4