Salinity data from radiation station 2018R4

Solar radiation over and under sea ice was measured by radiation station 2014R4, an autonomous platform, installed on drifting Multi-Year-Ice (MYI) in the Arctic Ocean during Oden_AO18. The resulting time series describes radiation measurements as a function of place and time between 20 August 2018 and 20 December 2018 in sample intervals of 3 hours. The radiation measurements have been performed with spectral radiometers. All data are given in full spectral resolution interpolated to 1.0 nm, and integrated over the entire wavelength range (broadband, total: 320 to 950 nm). Two sensors, solar irradiance and upward reflected solar irradiance, were mounted on a on a platform about 1 m above the sea ice surface. The third sensor was mounted 0.5 m underneath the sea ice measuring the downward transmitted irradiance. Along with the radiation measurements, this autonomous platform consisted of thermistor chain with 208 sensors and several other sensor packages, which measured water temperature, pressure and conductivity at hourly intervals. An underwater lightchain measured counts of red, green and blue light at 49 positions at hourly intervals. All times are given in UTC.

海冰上下的太阳辐射由自主平台辐射站2014R4测量，该平台于Oden_AO18期间安装在北冰洋的漂流多年冰（Multi-Year-Ice, MYI）上。所得时间序列描述了2018年8月20日至12月20日期间，以3小时为采样间隔、随时间与地点变化的辐射测量数据。辐射测量由光谱辐射计完成。所有数据均以插值至1.0 nm的全光谱分辨率给出，并在整个波长范围（宽带，总计：320至950 nm）内积分。两个传感器（太阳辐照度传感器和向上反射太阳辐照度传感器）安装在海冰表面上方约1米处的平台上。第三个传感器安装在海冰下方0.5米处，测量向下透射的辐照度。除辐射测量外，该自主平台还包含一条带有208个传感器的热敏电阻链及若干其他传感器组件，这些组件以小时为间隔测量水温、压力和电导率。一条水下光链在49个位置以小时为间隔测量红、绿、蓝光的计数。所有时间均以协调世界时（UTC）给出。