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Schlundt, Michael; Monk, Christopher; Greinert, Jens; Mittermayer-Schmittmann, Felix; Hennke, Anne (2026): Continuous thermosalinograph oceanography along RV ALKOR cruise track AL644 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.992567 (DOI registration in progress)

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Published: 2026-02-26

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Abstract:
Underway temperature and salinity data was collected along the cruise track with a SBE21 thermosalinograph (TSG) together with a SBE38 Thermometer. Both systems worked throughout the cruise. While temperature is taken at the water inlet in about 4 m depth, salinity is calculated within the interior TSG from conductivity and interior temperature. No temperature validation was performed. Salinity was validated with independent water samples taken at the water inlet. For details to all processing steps see Data Processing Report.
Other version:
AL644 salinity samples (2026). AL644_salinity_samples.tab
Data processing report:
Schlundt, Michael (2026): Continuous thermosalinograph oceanography along RV ALKOR cruise track AL644 - Data Processing Report. GEOMAR - Helmholtz Centre for Ocean Research Kiel, DAM_DataProcessingReport_AL644.pdf
Project(s):
DAM Underway Research Data (DAM_Underway)
DataHub Earth and Environment of the Helmholtz Association (DataHub)
Coverage:
Median Latitude: 54.571146 * Median Longitude: 12.415257 * South-bound Latitude: 54.027151 * West-bound Longitude: 10.033852 * North-bound Latitude: 54.811371 * East-bound Longitude: 14.411748
Date/Time Start: 2025-11-17T07:30:00 * Date/Time End: 2025-11-28T05:21:00
Minimum DEPTH, water: 4.0 m * Maximum DEPTH, water: 4.0 m
Event(s):
AL644_0_Underway-1 * Latitude Start: 54.337000 * Longitude Start: 10.165400 * Latitude End: 54.365351 * Longitude End: 10.170235 * Date/Time Start: 2025-11-17T07:12:24 * Date/Time End: 2025-11-28T00:00:00 * Elevation: -15.0 m * Campaign: AL644 (TARMAP 2025) * Basis: Alkor (1990) * Method/Device: Thermosalinograph (TSG)
AL644_0_Underway-2 * Latitude: 54.538000 * Longitude: 13.772200 * Date/Time: 2025-11-22T12:05:01 * Elevation: -22.0 m * Campaign: AL644 (TARMAP 2025) * Basis: Alkor (1990) * Method/Device: Thermosalinograph (TSG)
AL644_0_Underway-3 * Latitude: 54.044400 * Longitude: 11.235200 * Date/Time: 2025-11-24T11:37:05 * Elevation: -23.0 m * Campaign: AL644 (TARMAP 2025) * Basis: Alkor (1990) * Method/Device: Thermosalinograph (TSG)
Comment:
Salinity was validated independently with water samples from 4m depth (tim is the time in days since Expocode of this cruise (06AK20251117), i.e. since 2025-11-17T00:00:00): Value added to salinity data = -0.0087253*tim+0.13575.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DATE/TIMEDate/TimeSchlundt, MichaelGeocode
2LATITUDELatitudeSchlundt, MichaelGeocode
3LONGITUDELongitudeSchlundt, MichaelGeocode
4DEPTH, waterDepth watermSchlundt, MichaelGeocode
5Temperature, waterTemp°CSchlundt, MichaelDigital oceanographic thermometer, Sea-Bird, SBE 38
6Quality flag, water temperatureQF water tempSchlundt, MichaelSeadatanet flag: Data quality control procedures according to SeaDataNet (2010)Temperature QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing
7ConductivityCondmS/cmSchlundt, MichaelThermosalinograph (TSG), Sea-Bird, SBE 21 SEACAT
8Temperature, water, internalT intern°CSchlundt, MichaelThermosalinograph (TSG), Sea-Bird, SBE 21 SEACAT
9SalinitySalSchlundt, MichaelCalculated from internal temperature and conductivity
10Quality flag, salinityQF salSchlundt, MichaelSeadatanet flag: Data quality control procedures according to SeaDataNet (2010)Salinity QC flag meanings:0:no QC; 1:good; 2:probably good; 3:probably bad; 4:bad; 5-7:not used; 8:interpolated; 9:missing
11SalinitySalSchlundt, MichaelSalinometer (SALINO)
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:
84333 data points

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