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Oelker, Julia; Riedel, Michael; Voß, Daniela; Wollschläger, Jochen (2024): Continuous optical chlorophyll-a and turbidity data along R/V SONNE cruise SO294 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.971781

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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 and CHL2 products is additionally provided. Note that the instruments are factory-calibrated, however no post-calibration was performed due to missing reference data. 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.
Keyword(s):
chlorophyll-a; DAM; Fluorescence; ICBM; turbidity; Underway Measurement
Related to:
Riedel, Michael; cruise participants (2022): CLOCKS: Northern Cascadia: Extent of locked zone, prism deformation, slip-to-toe, and the edge of subduction and CASCADIA CO2: Seismic multi-parameter study at a possible site for CO2 storage in basalt in the Cascadia Basin utilizing shear wave events (secondary user), Cruise No. SO294, 13.09. 2022 - 27.10. 2022, Vancouver (Canada) - Port Hueneme (USA). SONNE-Berichte, Begutachtungspanel Forschungsschiffe, SO294, 150 pp, https://doi.org/10.48433/cr_so294
Data processing report:
Oelker, Julia (2024): Continuous optical chlorophyll-A and turbidity data along R/V SONNE cruise SO294 - 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_SO294.pdf
Documentation:
ACRI-ST; GlobColour Team (2020): GlobColour - Product User Guide. https://www.globcolour.info/CDR_Docs/GlobCOLOUR_PUG.pdf
Project(s):
Coverage:
Median Latitude: 47.910538 * Median Longitude: -126.967150 * South-bound Latitude: 34.052510 * West-bound Longitude: -129.251850 * North-bound Latitude: 50.291600 * East-bound Longitude: -119.202400
Date/Time Start: 2022-09-13T09:02:00 * Date/Time End: 2022-10-27T00:57:00
Minimum DEPTH, water: 4.0 m * Maximum DEPTH, water: 4.0 m
Event(s):
SO294_0_Underway-7 * Latitude Start: 49.310570 * Longitude Start: -123.121570 * Latitude End: 34.148680 * Longitude End: -119.202400 * Date/Time Start: 2022-09-13T09:02:00 * Date/Time End: 2022-10-27T00:57:00 * Campaign: SO294 (CLOCKS) * Basis: Sonne_2 * Method/Device: Fluorometer, Sea-Bird Scientific, ECO FLNTU * Comment: event was not logged in DSHIP
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DATE/TIMEDate/TimeOelker, JuliaGeocode
2LATITUDELatitudeOelker, JuliaGeocode
3LONGITUDELongitudeOelker, JuliaGeocode
4DEPTH, waterDepth watermOelker, JuliaGeocode
5Ship speedShip spknOelker, Julia
6Chlorophyll aChl aµg/lOelker, JuliaFluorometer, Sea-Bird Scientific, ECO FLNTU
7Quality flag, chlorophyll aQF chl aOelker, JuliaData 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
8Turbidity (Nephelometric turbidity unit)TurbidityNTUOelker, JuliaFluorometer, Sea-Bird Scientific, ECO FLNTU
9Quality flag, turbidityQF turbidityOelker, JuliaData 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
10Measurement containerMCOelker, JuliaActive container, SMB_A or SMB_B
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 2 (ProcLevel2)
Size:
330835 data points

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