ATOMIX shear probes benchmark data: data from a Sea and Sun Technology MSS microstructure profiler, western Baltic Sea.

This is a profile collected using a tethered free-fall vertical microstructure profiler, prepared as a benchmark shear-probe data example for the Scientific Committee on Oceanographic Research (SCOR) working group number 160 ''Analysing ocean turbulence observations to quantify mixing'' (ATOMIX). The profile was collected in the western Baltic Sea on 20 September 2008 during the cruise POS373 onboard the R.V. Poseidon, using the tethered free-fall MSS90-L profiler (Sea and Sun Technology, Germany, SN038). The dissipation rate was measured using two airfoil shear probes. In addition a fast-response FP07 thermistor, pressure, temperature, conductivity, vibration and oxygen sensors were mounted. All sensors were sampled with 1024 Hz. The dataset has been processed and formatted in accordance with ATOMIX guidelines and recommendations. The netCDF file includes four hierarchical groups, corresponding to the four levels of microstructure data in the ATOMIX format. L1_converted: time series from all sensors converted into physical units L2_cleaned: selected signals that are filtered and/or despiked before spectral analysis. Time stamp and length of the signals are the same as in L1. L3_spectra: wavenumber spectra from shear probes and vibration sensors L4_dissipation: dissipation estimates together with quality control parameters L2_cleaned time series used for spectral analysis are marked with section numbers. For more detailed information, please refer to the comments within the data file.