DOI: 10.5281/zenodo.7463097
title: Seawater velocities measured by autonomous sailbuoy Adcp in the Barents Sea from May to July 2021 on campaign the PolarFront project

description: This dataset contains ocean currents measured by sailing autonomous surface vehicle Adcp, while on campaign at 70–77N in the Barents Sea for the PolarFront research project, from 16 May to 25 July 2021 (Daase 2021). The Adcp is equipped with a Aanderaa DCPS 5400 operating at 600 kHz, mounted in the keel at –0.2 m.

Space/time coverage



Time: 2021-05-16T13:45:00Z/2021-07-25T13:15:00Z

Space: [20.5,70.0,33.0,76.8] ([W,S,E,N])


Data distributions

Datalogger (text files)

The primary distribution consists of 2 datalogger text files retrieved post-mission from sailbuoy internal storage. The files are the original full scale original data records, as captured by the internal sofware of manufacturer Offshore Sensing.



DATA.TXT: Position and sensor metadata

DCPS.TXT: Ocean currents


GeoJSON

For increased data interoperability, a GeoJSON file is also included, consisting of Point features like the following:

{  "geometry": { "coordinates": [30.11165, 76.438894], "type": "Point" },  "properties": {    "time": "2021-05-19T22:45:00Z",    "TTFF": 11,    "Count": 24,    "Commands": 0,    "TxTries": 1,    "ONT": 635,    "DiskUsed": 0.783123,    "Files": 0,    "I": 0.01564,    "V": 13.195122,    "Temperature": 4.06502,    "DCPSStatus": 0,    "DCPSOnMin": 10,    "DCPSSpeed": 0.329999,    "DCPSDirection": 233.233643  },  "type": "Feature" }

The GeoJSON file is derived from DATA.TXT and contains the full position and DCPS metadata log in a standard/machine-parsable format, including coordinated universal time following RFC 3339/ISO 8601.

Data formats and interoperability

Both of the datalogger text files are in non-standard vendor formats. The DCPS text format is described in the vendor manual.

Related publications

For a recent discussion on measuring ocean currents from sailbuoys compared to other platforms, see Wullenweber et al., 2022.

See also Swart et al.,2020; Camus et al., 2021 for further discussion on near-surface data collection with sailbuoys and other autonomous vehicles.

References

Camus L, Andrade H, Aniceto AS, Aune M, Bandara K, Basedow SL, Christensen KH, Cook J, Daase M, Dunlop K, Falk-Petersen S, Fietzek P, Fonnes G, Ghaffari P, Gramvik G, Graves I, Hayes D, Langeland T, Lura H, Kristiansen T, Nøst OA, Peddie D, Pederick J, Pedersen G, Sperrevik AK, Sørensen K, Tassara L, Tjøstheim S, Tverberg V, Dahle S (2021). Autonomous Surface and Underwater Vehicles as Effective Ecosystem Monitoring and Research Platforms in the Arctic—The Glider Project. Sensors 21(20):6752. https://doi.org/10.3390/s21206752

Daase M (ed.). (2021). ARCTOS Barents Sea Polar Front May 2021 Cruise Report (1.1.0). Zenodo. https://doi.org/10.5281/zenodo.7384076

Edholm J. (2022). Sailbuoy DCPS. Zenodo. https://doi.org/10.5281/zenodo.6798056

Swart S, du Plessis MD, Thompson AF, Biddle LC, Giddy I, Linders T, Mohrmann M, Nicholson S (2020). Submesoscale fronts in the Antarctic marginal ice zone and their response to wind forcing. Geophysical Research Letters, 47, e2019GL086649. https://doi.org/10.1029/2019GL086649

Wullenweber N, Hole LR, Ghaffari P, Graves I, Tholo H, Camus L (2022). SailBuoy Ocean Currents: Low-Cost Upper-Layer Ocean Current Measurements. Sensors. 22(15):5553. https://doi.org/10.3390/s22155553