| Summary: | Conductivity temperature depth (CTD) data for lines 2, 4, and 6. This data set contains the raw .hex files and the .cnv from conductivity temperature depth (CTD) casts conducted near Barrow, AK from August 29 - September 10, 2012. Details of the latitude, longitude, date, and time are listed in the event log that is archived at this site. Date, time, position, bottom depth, and project sample line also are listed in each file. Each CTD file is named sequentially; corresponding station numbers are listed in the event log. Data were collected from the research vessel R/V Ukpik using a SeaBird (SBE) 19+ CTD sensor equipped with a Wetlabs WetStar WS3S fluorometer and Biospherical Instrument Inc. Model QSP2300 PAR/irradiance sensor sensor. No post-processing of the data was done. Fluorescence is reported as mg/m3 chlorophyll a, with conversion from volts according to factory calibrations. These values were ground-truthed to extracted chlorophyll from samples collected using Niskin bottles. The reported chlorophyll a values in the CTD files need to be corrected according to the equation: Y=0.5793X - 0.1108 for WetLabs Fluorometer values less than or equal to 10. Y=X for Wetlabs Fluometer values greater than 10. Where X is the value from the WetLabs Fluorometer and Y is the corrected value in mg/m3.
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