PANGAEA_993809 Continuous optical chlorophyll-a and turbidity data along RV SONNE cruise SO314 Oelker, Julia; Frank, Martin Continuous optical chlorophyll-a and turbidity data along RV SONNE cruise SO314 2026-05-19 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.993809 Investigator Julia Oelker julia.oelker@uni-oldenburg.de Earth Science DATE/TIME LATITUDE LONGITUDE DEPTH, water Ship speed Chlorophyll a Quality flag, chlorophyll a Turbidity (Nephelometric turbidity unit) Quality flag, turbidity Measurement container geoscientificInformation chlorophyll-a DAM Fluorescence Fluorometer, Sea-Bird Scientific, ECO FLNTU SO314 SO314_0_Underway-7 turbidity Underway measurement Fluorometer, Sea-Bird Scientific, ECO FLNTU Data quality control procedures according to Copernicus Marine in situ TAC BGC quality control group (2021) Fluorometer, Sea-Bird Scientific, ECO FLNTU; Sensor alignment correction according to Data Processing Report Sonne_2 2025-08-12 2025-10-04 Complete -23.60311 -13.82542 -149.60126 -71.07644 4.0 m (DEPTH, water) 4.0 m (DEPTH, water) DAM_Underway DAM Underway Research Data DataHub DataHub Earth and Environment of the Helmholtz Association 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

Leobener Str.

Bremen Bremen 28359 Germany online 689839 data points text/tab-separated-values Frank, Martin; Kopp, Heidrun; Arndt, Iris; Bartels, Thies; Bauer, Benedikt; Berkholz, Martha; Berndt, Janine; Chen, Zhongxing; Crosby, Ani Jang; Dale, Andrew; Dannowski, Anke; Evers, Florian; Fessler, Sebastian; Filbrandt, Christian; Frederichs, Thomas; Friedrich, Annalena; Glock, Nicolaas; Haas, Peter; Hilgenfeldt, Christian; Hofmann, Jannes; Kahler, Merit; Lange, Dietrich; Lippert, Antina; Murray, Kenneth; Raddatz, Jacek; Rohde, Lea; Sange, Oliver; Schätzel, Julia; Schmülling, Bendikt; Siegburg, Melanie; Timm, Christian; Verdurme, Pauline; Warnatz, Julia; Warwel, Arne; Zindorf, Mark (2025): Testing Solid Earth - Climate Connections and Generation of Crust at the Fast-Spreading Southeast Pacific Rise using time series, Cruise No. SO314, 13th August 2025 - 5th October 2025, Pepeete (French Polynesia) - Antofagasta (Chile). SONNE-Berichte, Begutachtungspanel Forschungsschiffe, SO314, 152 pp, https://doi.org/10.48433/cr_so314 Oelker, Julia (2026): Continuous optical chlorophyll-a and turbidity data along R/V SONNE cruise SO314 - Data Processing 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/139661/attachments/DAM_DataProcessingReport_SO314.pdf

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 every 24 hours at the beginning of the time series and from 17 Sep on 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 (especially for turbidity, only small differences found for chlorophyll-a). 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 moderate, considering only nighttime data which are assumed to be unaffected by non-photochemical quenching. 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. The time series shows clear signs of 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. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.993809"!

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://archimer.ifremer.fr/doc/00251/36232/ Data quality control procedures according to Copernicus Marine in situ TAC BGC quality control group (2021) https://doi.org/10.48433/cr_so314 Testing Solid Earth - Climate Connections and Generation of Crust at the Fast-Spreading Southeast Pacific Rise using time series, Cruise No. SO314, 13th August 2025 - 5th October 2025, Pepeete (French Polynesia) - Antofagasta (Chile) https://en.wikipedia.org/wiki/Turbidity Turbidity (Nephelometric turbidity unit) https://hdl.handle.net/10013/epic.32187.d001 Chlorophyll a https://helmholtz.software/projects/datahub DataHub https://uol.de/icbm/forschungsplattformen-schiffe/sonne Sonne_2 https://www.allianz-meeresforschung.de/kernbereiche/datenmanagement-und-digitalisierung#unterwegs DAM_Underway https://www.seabird.com/eco-flntu/product?id=60762467722 Fluorometer, Sea-Bird Scientific, ECO FLNTU DIF 9.4 2026-05-19 2026-05-29