Intercalibrated dataset of in situ dissolved organic matter fluorescence from ice tethered profile 65 in the Central Arctic (2012-2013)

• Main Authors: Stedmon, Colin A, Amon, Rainer M W, Bauch, Dorothea, Bracher, Astrid, Gonçalves-Araujo, Rafael, Hoppmann, Mario, Krishfield, Richard A, Laney, Samuel, Rabe, Benjamin, Reader, Heather E, Granskog, Mats A
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Advective Pathways of nutrients and key Ecological substances in the ARctic; APEAR; Arctic; CDOM; DATE/TIME; DEPTH; water; Fluorescence; colored dissolved organic matter; FRAM; FRontiers in Arctic marine Monitoring; hydrography; Ice-Tethered Profiler; Identification; ITP; ITP65-TransArc-NAACOS; LATITUDE; LONGITUDE; particulate matter; Pressure; Profile ID; RACE; Regional Atlantic Circulation and global Change; Salinity; Temperature; potential; water masses; Sea ice
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.934409; https://doi.org/10.1594/PANGAEA.934409

Here we present a merged and calibrated dataset of temperature, practical salinity and dissolved organic matter (DOM) fluorescence obtained from several Ice Tethered Profilers (ITPs) deployed across the central Arctic (2011-2016). The data offer a unique spatial coverage of the distribution of DOM in the surface 800 m below Arctic sea ice. A total of 5044 profiles are gathered. The ITP data are level 3 data products pressure-bin-averaged at 1-db vertical resolution with depth down to either 200 or approximately 750 m. Data (max 800m depth) from CTD casts made during two oceanographic cruises are also included. These were used as part of the calibration and validation of the ITP calibration routines. The cruises were PS94 (ARK-XXIX/3) with POLARSTERN in 2015 and NAACOS with DANA in 2012. The presented DOM fluorescence data are smoothed, corrected for instrument drift and calibrated to provide intercomparable data across the sensors. Fluorescence is reported in Raman Units (nm-1), and comparable to laboratory measurements conducted according to current community recommendations.