Data for: Insights into Water Mass Origins in the Central Arctic Ocean from in-situ Dissolved 3 Organic Matter Fluorescence

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.

本报告呈现了由多台部署于中北极区域（2011-2016年）的冰锚式探测器（ITPs）所收集的温度、实际盐度及溶解有机物（DOM）荧光合并及校准后的数据集。该数据集为DOM在北极海冰表面以下800米范围内的空间分布提供了独特的覆盖范围。共计收集了5044个数据剖面。ITP数据为第三级数据产品，采用1-db的垂直分辨率进行压力分箱平均，深度可达200米或约750米。此外，还包括了在两次海洋学考察期间进行的CTD投掷所获取的数据（最大深度为800米），这些数据被用作ITP校准程序的校准与验证的一部分。考察分别为2015年的PS94（ARK-XXIX/3）Polarstern考察和2012年的NAACOS与DANA考察。所提供的DOM荧光数据经过平滑处理，校正了仪器漂移，并进行了校准，以确保传感器间数据的可比性。荧光值以拉曼单位（nm-1）表示，并与根据当前社区推荐进行的实验室测量结果相当。