University of Bergen
Dissipation measurements from a Slocum glider in the Barents Sea Polar Front, October 2022
Recommended citation:
Fer, Ilker
(2024)
Dissipation measurements from a Slocum glider in the Barents Sea Polar Front, October 2022
https://doi.org/10.21335/NMDC-247353299
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Abstract
Ocean microstructure measurements were obtained from a Rockland Scientific (RSI) MicroRider attached to an electric Slocum glider. The glider was operated across the Barents Sea Polar Front, during the Nansen Legacy cruise, KB2022625, in October 2022. The glider mission started on 2 October 2022 and ended on 9 October 2022. In addition to the turbulence package, the glider was equipped with a pumped Seabird conductivity-temperature (CTD) sensor. Both the CTD and the MR were configured to sample during dives and climbs of the glider. The dissipation rate was measured using two airfoil shear probes. Turbulence channels sampled at a rate of 512 per second, and the slow channels at 64 per second. The dataset has been processed and formatted in accordance with the SCOR Working Group ATOMIX guidelines and recommendations. One NetCDF (NC) file per instrument's native file is provided (typically one file between consecutive surfacings of the glider, 191 files in total). Each provided NC file is organized in four hierarchical groups including continuous time series of data converted into physical units, cleaned time series used for spectral analysis, wavenumber spectra, and dissipation rate estimates. The first group also includes time series, matched with the MR time, of longitude, latitude, temperature, salinity and flight parameters from the glider (so-called hotel). Because each file includes data sampled at a rate of 512 per second at two levels and their spectra in the third group, the grouped NC files are large in size and may be unpractical to download and merge. For users only interested in the dissipation estimates and other time-averaged profiles, we also provide two separate NC files with all dissipation rate (and other related parameters) profiles and 1-s averaged sensor data, including flight parameters, collated into one file each. For more detailed information, please refer to the comments within the data file.
Scientific keywords:
EARTH SCIENCE> OCEANS> MARINE GEOPHYSICS
Key words:
Arctic Ocean, Barents Sea, polar front, glider, mixing, turbulence, dissipation rate, microstructure, shear probes