Leimann, Ilmar; Mertens, Christian (2025): ADCP current measurements (75 kHz) during RV MARIA S. MERIAN cruise MSM121 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.981244
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Published: 2025-04-23 • DOI registered: 2025-05-22
Abstract:
Upper-ocean current velocities were measured along the track of the cruise MSM121 (22 September — 16 October 2023) using a vessel-mounted acoustic current Doppler profiler (ADCP). The instrument was a Teledyne RD Instruments 75-kHz Ocean Surveyor, with the transducer was installed 6.0 m below the waterline. The instrument was operated in narrowband mode to achieve the maximum possible range. Velocity data were recorded in 100 8-m bins. The navigational data, as well as heading, pitch and roll data, were recorded together with the velocity measurements by the data acquisition software (VmDAS). The velocity data were converted into earth coordinates and averaged into one-minute intervals. A water track calibration was used (OSADCP_Toolbox) to determine misalignment angle (0.678°) and amplitude factor (1.010). The accuracy of the velocity data varies, and depends on the number of available good pings in each depth cell during one measurements interval.
Related to:
Mertens, Christian; Welsch, Andreas; Stake, Jürgen; Leimann, Ilmar; Frajka-Williams, Eleanor; Hainbucher, Dagmar; Nikolaus, Viktoria; Dirksen, Lukas; Steinfeldt, Reiner; Rapanague Sepúlveda, María-Jesús; Garcia Santacruz, Dinora; Pauls, Stefan; Aschenbeck, Lara Jane; Dale, Duncan; Desbruyères, Damien; Prigent, Sébastien; Leizour, Stéphane; Sellet, Hugo (2024): The Role of the Deep Western Boundary Current in the Subpolar North Atlantic for the Discontinuity of Atlantic Meridional Overturning variability, the Transition Zone at 47°N, Cruise No. MSM121, 22.09.2023 - 16.10.2023, Nuuk (Greenland) - Ponta Delgada (Portugal). MARIA S. MERIAN-Berichte, Begutachtungspanel Forschungsschiffe, MSM121, 35 pp, https://doi.org/10.48433/cr_msm121
Documentation:
Kopte, Robert; Becker, Marius; Fischer, Tim; Brandt, Peter; Krahmann, Gerd; Betz, Maximilian; Faber, Claas; Winter, Christian; Karstensen, Johannes; Wiemer, Gauvain (2024): FAIR ADCP data with OSADCP: a workflow to process ocean current data from vessel-mounted ADCPs. Frontiers in Marine Science, 11, 1425086, https://doi.org/10.3389/fmars.2024.1425086
Project(s):
Funding:
Horizon Europe (HorizonEU), grant/award no. 101059547: Updating ocean models to predict rapid climate change (EPOC)
Coverage:
Median Latitude: 46.840653 * Median Longitude: -45.882962 * South-bound Latitude: 38.777100 * West-bound Longitude: -52.583984 * North-bound Latitude: 63.698181 * East-bound Longitude: -26.734558
Date/Time Start: 2023-09-22T22:51:00 * Date/Time End: 2023-10-15T21:32:00
Minimum DEPTH, water: 22.0 m * Maximum DEPTH, water: 814.0 m
Event(s):
MSM121_0_Underway-6 * Latitude Start: 47.457782 * Longitude Start: -52.567762 * Latitude End: 38.716242 * Longitude End: -26.689810 * Date/Time Start: 2023-09-26T19:56:32 * Date/Time End: 2023-10-15T22:00:00 * Elevation Start: -170.0 m * Elevation End: -987.0 m * Campaign: MSM121 (EPOC) * Basis: Maria S. Merian * Method/Device: Vessel mounted Acoustic Doppler Current Profiler [75 kHz] (VMADCP-75)
Comment:
Version 2, 2025-04-22: This version replaces doi:979947
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Leimann, Ilmar | Geocode | ||
| 2 | LATITUDE | Latitude | Leimann, Ilmar | Geocode | ||
| 3 | LONGITUDE | Longitude | Leimann, Ilmar | Geocode | ||
| 4 | DEPTH, water | Depth water | m | Leimann, Ilmar | Geocode | |
| 5 | Current velocity, east-west | Cur vel U | cm/s | Leimann, Ilmar | Vessel mounted Acoustic Doppler Current Profiler [75 kHz] (VMADCP-75) | |
| 6 | Current velocity, north-south | Cur vel V | cm/s | Leimann, Ilmar | Vessel mounted Acoustic Doppler Current Profiler [75 kHz] (VMADCP-75) | |
| 7 | Percent good pings | good ping | % | Leimann, Ilmar | Vessel mounted Acoustic Doppler Current Profiler [75 kHz] (VMADCP-75) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
8453166 data points
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