de.pangaea.dataset995183 und dataset PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact 2026-06-19T07:23:21Z https://doi.pangaea.de/10.1594/PANGAEA.995183 2026-06-19T07:23:15 publication Oelker, Julia

julia.oelker@uni-oldenburg.de

https://orcid.org/0000-0002-0783-3617 information author Gaye, Birgit

birgit.gaye@uni-hamburg.de

https://orcid.org/0000-0002-5057-899X information author Waniek, Joanna J

joanna.waniek@io-warnemuende.de

https://orcid.org/0000-0003-3724-073X 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 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 consistent chlorophyll-a and turbidity time series. The corrected chlorophyll-a data were calibrated based on chlorophyll-a values from discrete water samples taken from the underway system and measured fluorometrically in the lab. The turbidity time series was compared against suspended particulate matter (SPM) from surface water samples taken from Niskin bottles of the CTD frame and determined gravimetrically in the lab. Correlation between turbidity and sample SPM was poor. 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 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 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. 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 1995-01-01 creation PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact DAM_Underway DAM Underway Research Data DataHub DataHub Earth and Environment of the Helmholtz Association theme 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 51.67094 80.11346 -23.20423 7.08016 2024-01-10T00:00:00 2024-02-19T06:50:00 4.0 4.0 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; Calibration according to Data processing report; calibrated with discrete samples 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); 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 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, SMB_A or SMB_B text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.995183?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: SO303_0_Underway-7 * LATITUDE START: -20.164480 * LONGITUDE START: 57.424960 * LATITUDE END: 6.960600 * LONGITUDE END: 79.855650 * DATE/TIME START: 2024-01-10T00:00:00 * DATE/TIME END: 2024-02-19T06:50:00 * CAMPAIGN: SO303 * BASIS: Sonne_2 * METHOD/DEVICE: Fluorometer, Sea-Bird Scientific, ECO FLNTU event was not logged in DSHIP 2024-01-10T00:00:00 Related to 2024-01-01 publication https://doi.org/10.48433/cr_so303 Gaye, Birgit

birgit.gaye@uni-hamburg.de

https://orcid.org/0000-0002-5057-899X information author Andersch, Tjark author Bartsch, Peggy author Cosmus, Hannes author Dähnke, Kirstin

kirstin.daehnke@hereon.de

https://orcid.org/0000-0001-5133-7082 information author Dasbach, Dorothee author Eisnecker, Paula author Gök, Irmak author Harms, Natalie

natalie.harms@uni-hamburg.de

https://orcid.org/0000-0003-3404-7846 information author Hubert-Huard, Raphaël author Hüge, Fabian author John, Finn author Keuter, Sabine author Kretzschmann, Lisett

lisett.kretzschmann@bsh.de

author Lahajnar, Niko

niko.lahajnar@uni-hamburg.de

author Lisitano, Luisa author Lüdmann, Thomas

thomas.luedmann@uni-hamburg.de

https://orcid.org/0000-0001-6847-5502 information author Markfort, Greta author Meiritz, Luisa Chiara https://orcid.org/0009-0003-1957-6050 information author Oldhaver, Manja author Penopp, Jan author Prien, Ralf D

ralf.prien@io-warnemuende.de

https://orcid.org/0000-0003-3014-792X information author Rixen, Tim

tim.rixen@leibniz-zmt.de

https://orcid.org/0000-0001-8376-891X information author Ruda, Luise author Sanders, Tina

Tina.Sanders@hereon.de

https://orcid.org/0000-0002-3692-1800 information author Schulz, Gesa

gesa.schulz@uni-hamburg.de

https://orcid.org/0000-0002-6689-767X information author Schulz, Hartmut

hartmut.schulz@uni-tuebingen.de

https://www.uni-tuebingen.de/en/faculties/faculty-of-science/departments/geosciences/arbeitsgruppen/palaeobiology/research-area/micropaleontology/working-group/members/hartmut-schulz.html information author Siccha, Michael

msiccha@marum.de

https://orcid.org/0000-0002-2039-5535 information author Sommer, Marcel author Sorge, Yves author Waniek, Joanna J

joanna.waniek@io-warnemuende.de

https://orcid.org/0000-0003-3724-073X information author documentDigital SONNE-Berichte, Begutachtungspanel Forschungsschiffe SO303 81 pp Data processing report 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 Documentation 2017-01-01 publication https://helcom.fi/publications/guidelines-for-measuring-chlorophyll-a/ documentDigital Baltic Marine Environment Protection Commission - Helsinki Commission (HELCOM)