Oelker, Julia; Martínez Arbizu, Pedro; Voß, Daniela; Wollschläger, Jochen (2024): Continuous optical chlorophyll-a and turbidity data along R/V SONNE cruise SO295 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.972092 (DOI registration in progress)
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
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 12 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 and a comparison for chlorophyll-a with satellite data using the GlobColour CHL1 for open ocean is additionally provided. Note that the instruments are factory-calibrated, however no post-calibration was performed due to missing reference data. The chlorophyll-a time series shows effects of non-photochemical quenching which was neither corrected nor flagged. The user may only want to use data unaffected by non-photochemical quenching (NPQ is roughly estimated to occur between 01:00 and 19:00 local time). Details on all quality control steps and the comparison with satellite data can be found in the data processing report. The resulting data set contains the original data and corresponding quality flags achieved by the quality control algorithm. 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.
Related to:
Haeckel, Matthias; Janssen, Felix; Martinez Arbizu, Pedro (2023): Assessing the impacts of polymetallic nodule mining on the deep-sea environment after an industrial collector test in the German and Belgian contract areas in the CCZ, Cruise No. SO295, 31 October 2022 - 23 December 2022, Port Hueneme (USA) - Port Hueneme (USA). SONNE-Berichte, Begutachtungspanel Forschungsschiffe, SO295, 598 pp, https://doi.org/10.48433/cr_so295
Data processing report:
Oelker, Julia (2024): Continuous optical chlorophyll-A and turbidity data along R/V SONNE cruise SO295 - Data Processing Report. Institute for Chemistry and Biology of the Marine Environment (ICBM), School of Mathematics and Science, Carl von Ossietzky Universität Oldenburg, DAM_DataProcessingReport_SO295.pdf
Documentation:
ACRI-ST; GlobColour Team (2020): GlobColour - Product User Guide. https://www.globcolour.info/CDR_Docs/GlobCOLOUR_PUG.pdf
Project(s):
DAM Underway Research Data (DAM_Underway)
Coverage:
Median Latitude: 15.252204 * Median Longitude: -120.565752 * South-bound Latitude: 11.805750 * West-bound Longitude: -125.946200 * North-bound Latitude: 34.148780 * East-bound Longitude: -116.678180
Date/Time Start: 2022-11-01T00:55:00 * Date/Time End: 2022-12-23T00:42:00
Minimum DEPTH, water: 4.0 m * Maximum DEPTH, water: 4.0 m
Event(s):
SO295_0_Underway-5 * Latitude Start: 34.148670 * Longitude Start: -119.202420 * Latitude End: 34.147790 * Longitude End: -119.207990 * Date/Time Start: 2022-11-01T00:55:00 * Date/Time End: 2022-12-23T00:42:00 * Campaign: SO295 (Nodule Monit. II) * Basis: Sonne_2 * Method/Device: Fluorometer, Sea-Bird Scientific, ECO FLNTU * Comment: event was not logged in DSHIP
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 2 (ProcLevel2)
Size:
414388 data points
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