Vertical hydrography profiles from CTD rosette during ARCTOS Polar Front cruise 2021-05

PolarFront 2021-05 CTD hydrography profiles for 27 stations
During the May 2021 cruise, hydrographic measurements were taken using a Sea-Bird Scientific SBE 911plus CTD instrument, which was lowered into the water and sampled the whole water column until 5-10 m above the bottom.
The CTD is equipped with instruments measuring conductivity, temperature, pressure,oxygen, fluorescence, turbidity and PAR, and mounted on a rosette with 12 Niskin bottles for water sampling
Only downcast values are used to avoid errors caused by turbulence on the upcast. Basic data processing were done using Sea-Bird Scientific software SBE Data Processing (v7.26.4.0): converting to physical units, filtering for outliers, and bin-averaging over 1 m bins.
The final data accuracy is ±0.5 dbar for pressure, ±0.002˚C for sea water temperature and ±0.003 for sea water salinity.
 File types
Each station number has multiple data files from various steps of processing.
Notice that the *.xls are plain ascii text files with tab-separated values. These may be converted to utf-8 using `iconv -f iso8859-1 -t utf8`

*.bl = Bottle log information. Output bottle file, containing bottle firing sequence number and position, data, time, and beginning and ending scan numbers for each bottle closure. Beginning and ending scan numbers correspond to approximately 1.5-second duration for each bottle.
*.btl = Bottle files. Averaged data for each bottle.
*.cnv = Data converted to engineering units.
*hdr = Header information.
.hex = Hexadecimal data file.
*.xls = Converted data binned to 1 m as ascii text (tsv).
*.xlmcon = Instrument configuration.
*_bin.cnv = Converted data binned to 1 m as ascii data.
*_bin.wmf = Graphic of converted and 1m-binned data. *_RAW.cnv = Raw data as text file.