Albedo measurements from radiation station 2020R10@en

Solar radiation over and under sea ice was measured by radiation station 2020R10, an autonomous platform, installed on drifting First-Year-Ice (FYI) in the Arctic Ocean during MOSAiC (Leg 2) 2019/20. The resulting time series describes radiation measurements as a function of place and time between 08 March 2020 and 21 July 2020 in sample intervals of 1 hour. 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 a lightchain, which measured counts of red, green and blue light at 49 positions at hourly intervals. In addition, the evolution of snow height is measured at hourly intervals. All times are given in UTC.自主观测平台2020R10搭载的辐射站，于MOSAiC（第二航段）2019/2020年科考期间，在北冰洋的漂流一年冰（First-Year-Ice, FYI）上完成了海冰表面与海冰下方太阳辐射的测量工作。所得时间序列记录了2020年3月8日至2020年7月21日期间，辐射测量值随空间位置与时间的变化规律，采样间隔为1小时。本次辐射测量采用光谱辐射计（spectral radiometers）完成，所有数据以全光谱分辨率输出，并插值至1.0 nm的波长间隔，同时在全波长范围内（宽带总辐射：320至950 nm）进行积分。两台传感器安装于海冰表面上方约1米的平台上，分别用于测量太阳入射辐照度与向上反射太阳辐照度；第三台传感器安装于海冰下方0.5米处，用于测量向下透射辐照度。除辐射测量外，该自主平台还搭载了光链（lightchain）系统，可按每小时间隔在49个测点处记录红、绿、蓝三色光的光子计数；此外，系统还按每小时间隔监测雪层高度的变化。所有时间数据均采用协调世界时（UTC）标注。