de.pangaea.dataset995185 und dataset PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact 2026-09-01T10:26:08Z https://doi.pangaea.de/10.1594/PANGAEA.995185 <gco:CharacterString>Continuous optical chlorophyll-a and turbidity data along RV MARIA S. MERIAN cruise MSM140/2</gco:CharacterString> 2026-06-08T09:36:34 publication https://doi.org/10.1594/PANGAEA.995185 Oelker, Julia
julia.oelker@uni-oldenburg.de
https://orcid.org/0000-0002-0783-3617 information author PANGAEA
info@pangaea.de
https://www.pangaea.de/ information publisher tableDigital 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 6 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. The corrected chlorophyll-a time series was compared against Globcolour CHL1 and chlorophyll-a derived from above-water radiometry. Details on all quality control steps and the comparisons with satellite data and chlorophyll-a from radiometry can be found in the data processing report. The chlorophyll-a data were not calibrated using reference samples. Absolute values of this data set should be challenged. The data set user should keep in mind that some parts of the time series are likely 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 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. completed Oelker, Julia
julia.oelker@uni-oldenburg.de
https://orcid.org/0000-0002-0783-3617 information principalInvestigator chlorophyll-a DAM Fluorescence turbidity Underway measurement theme <gco:CharacterString>PANGAEA Keyword List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact AI_BaseCamp AI BaseCamp - Helmholtz DataHub Earth & Environment DAM_ResearchVessels DAM Marine Data - Research Vessels theme <gco:CharacterString>PANGAEA Project List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation -42.52132 -4.46186 -23.16361 48.38126 2025-10-17T14:57:00 2025-11-05T05:59:00 6.5 6.5 DATE/TIME thematicClassification LATITUDE thematicClassification LONGITUDE thematicClassification DEPTH, water physicalMeasurement m m Ship speed physicalMeasurement kn kn Chlorophyll a physicalMeasurement Fluorometer, Sea-Bird Scientific, ECO FLNTU µg/l µg/l Quality flag, chlorophyll a thematicClassification Data quality control procedures according to Copernicus Marine in situ TAC BGC quality control group (2021); QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing Turbidity (Nephelometric turbidity unit) physicalMeasurement Fluorometer, Sea-Bird Scientific, ECO FLNTU NTU NTU Quality flag, turbidity thematicClassification Data quality control procedures according to Copernicus Marine in situ TAC BGC quality control group (2021); QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing Chlorophyll a physicalMeasurement Fluorometer, Sea-Bird Scientific, ECO FLNTU; Sensor alignment correction according to Data Processing Report; corrected through sensor alignment µg/l µg/l Quality flag, chlorophyll a thematicClassification Data quality control procedures according to Copernicus Marine in situ TAC BGC quality control group (2021); 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 Turbidity (Nephelometric turbidity unit) physicalMeasurement Fluorometer, Sea-Bird Scientific, ECO FLNTU; Sensor alignment correction according to Data Processing Report; corrected through sensor alignment NTU NTU Quality flag, turbidity thematicClassification Data quality control procedures according to Copernicus Marine in situ TAC BGC quality control group (2021); 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 Measurement container thematicClassification Active container, MC1 or MC2 text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.995185?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: MSM140/2_0_Underway-12 * LATITUDE START: 48.381260 * LONGITUDE START: -4.476760 * LATITUDE END: -23.085110 * LONGITUDE END: -42.521320 * DATE/TIME START: 2025-10-17T14:57:00 * DATE/TIME END: 2025-11-05T05:59:00 * CAMPAIGN: MSM140/2 * BASIS: Maria S. Merian * METHOD/DEVICE: Fluorometer, Sea-Bird Scientific, ECO FLNTU event was not logged in DSHIP 2025-10-17T14:57:00 Related to <gco:CharacterString>Collecting Atmospheric Reference Data DowN in latitude leg, Cruise No. MSM140/2, 17.10.2025 - 05.11.2025, Brest (France) - Rio de Janeiro (Brazil)</gco:CharacterString> 2026-01-01 publication https://doi.org/10.48433/cr_msm140_2 Oelker, Julia
julia.oelker@uni-oldenburg.de
https://orcid.org/0000-0002-0783-3617 information author Bergmann, Josy author Frederick, Jennica author Hayo, Lennéa
jhayo@smail.uni-koeln.de
author Kinne, Stefan
stefan.kinne@mpimet.mpg.de
author Reischmann, Lucas
L.Reischmann@mpic.de
author Stammes, Piet
piet.stammes@knmi.nl
author Tuinder, Olaf author Wang, Ping author Windmiller, Julia author Ziegler, Steffen
Steffen.Ziegler@mpic.de
author documentDigital MSM140/2 45 pp Data processing report <gco:CharacterString>Continuous optical chlorophyll-a and turbidity data along RV MARIA S. MERIAN cruise MSM140/2 - Data Processing Report</gco:CharacterString> 2026-01-01 publication Oelker, Julia
julia.oelker@uni-oldenburg.de
https://orcid.org/0000-0002-0783-3617 information author documentHardcopy Institute for Chemistry and Biology of the Marine Environment (ICBM), School of Mathematics and Science, Carl von Ossietzky Universität Oldenburg