PANGAEA_995178
Continuous optical chlorophyll-a and turbidity data along RV MARIA S. MERIAN cruise MSM139
Oelker, Julia; John, Uwe; Henkel, Rohan; Voß, Daniela
Continuous optical chlorophyll-a and turbidity data along RV MARIA S. MERIAN cruise MSM139
2026-06-08
PANGAEA
Dataset
https://doi.pangaea.de/10.1594/PANGAEA.995178
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
MSM139
MSM139_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; Calibration with samples measured according to Arar and Collins (1997) [EPA Method 445.0]
Fluorometer, Sea-Bird Scientific, ECO FLNTU; Sensor alignment correction according to Data Processing Report
Maria S. Merian
2025-07-24
2025-08-26
Complete
59.10879
75.00439
-59.54339
-21.92033
6.5 m (DEPTH, water)
6.5 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
452071 data points
text/tab-separated-values
Non-Exclusive Licence No. G25-007 for Utilization of Greenland Genetic Resources (2025). Naalakkersuisut - Government of Greenland, https://download.pangaea.de/reference/140046/attachments/Genetic%20Resource%20License%20No.%20G25-007.pdf
John, Uwe; Christensen, Anneliese; Becks, Lutz; Thielecke, Antonia; Voß, Daniela; Henkel, Rohan; Oelker, Julia; Thome, Pauline; Andipalagan, Mathiroopini; Schmitt-Kopplin, Philippe; Clarke, Dave; Burfeid-Castellanos, Andrea M; Eikrem, Wenche; Lundholm, Nina; Nagai, Satoshi; Honorato, Ricardo; Kühne, Nancy; Kopplin, Leila (2025): Investigate and evaluate the risks of harmful algae blooms in Greenlandic waters due to climate change: Assessment of range expansion and HAB population connectivity, Cruise No. MSM139, 25.07.2025 - 27.08.2025, Reykjavík (Iceland) - Reykjavík (Iceland). MARIA S. MERIAN-Berichte, Begutachtungspanel Forschungsschiffe, MSM139, 50 pp, https://doi.org/10.48433/cr_msm139
Oelker, Julia; Dietrich, Kathrin; Voß, Daniela; Henkel, Rohan; Badewien, Thomas Henry (2026): Total suspended matter, particulate organic matter and particulate inorganic matter from discrete water samples during RV MARIA S. MERIAN cruise MSM139 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995261
Oelker, Julia; Voß, Daniela; Henkel, Rohan; Badewien, Thomas Henry (2026): Chlorophyll a and phaeophytin a measurements from discrete water samples during RV MARIA S. MERIAN cruise MSM139 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995260
Oelker, Julia (2026): Continuous optical chlorophyll-a and turbidity data along R/V MARIA S. MERIAN cruise MSM139 - 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/140041/attachments/DAM_DataProcessingReport_MSM139.pdf
Arar, E J; Collins, G B (1997): Method 445.0 In Vitro Determination of Chlorophyll a and Pheophytin ain Marine and Freshwater Algae by Fluorescence. U.S. Environmental Protection Agency, Washington, DC, 1997, https://cfpub.epa.gov/si/si_public_record_report.cfm?Lab=NERL&dirEntryId=309417, https://download.pangaea.de/reference/107393/attachments/M445_0.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 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 data were calibrated based on chlorophyll-a values from discrete water samples taken directly from the RSWS system close to the measurement boxes plus surface samples from CTD casts. 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 only moderate 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, CHL2, 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 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 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. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.995178"!
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://cfpub.epa.gov/si/si_public_record_report.cfm?Lab=NERL&dirEntryId=309417
Method 445.0 In Vitro Determination of Chlorophyll a and Pheophytin ain Marine and Freshwater Algae by Fluorescence
https://doi.org/10.48433/cr_msm139
Investigate and evaluate the risks of harmful algae blooms in Greenlandic waters due to climate change: Assessment of range expansion and HAB population connectivity, Cruise No. MSM139, 25.07.2025 - 27.08.2025, Reykjavík (Iceland) - Reykjavík (Iceland)
https://doi.pangaea.de/10.1594/PANGAEA.995260
Chlorophyll a and phaeophytin a measurements from discrete water samples during RV MARIA S. MERIAN cruise MSM139
https://doi.pangaea.de/10.1594/PANGAEA.995261
Total suspended matter, particulate organic matter and particulate inorganic matter from discrete water samples during RV MARIA S. MERIAN cruise MSM139
https://en.wikipedia.org/wiki/RV_Maria_S._Merian
Maria S. Merian
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://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; Calibration with samples measured according to Arar and Collins (1997) [EPA Method 445.0]
DIF
9.4
2026-06-08
2026-06-26