Spectral radiation fluxes, albedo and transmittance from autonomous measurement from Radiation Station 2020R11, deployed during MOSAiC 2019/20

• Main Authors: Nicolaus, Marcel, Anhaus, Philipp, Hoppmann, Mario, Tao, Ran, Katlein, Christian
• Format: Other/Unknown Material
• Language: English
• Published: PANGAEA 2024
• Subjects: 2020R11; Arctic Ocean; autonomous platform; AWI_SeaIce; buoy; Current sea ice maps for Arctic and Antarctic; drift; lightchain; meereisportal.de; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Polarstern; PS122/3; PS122/3_28-55; PS122/4; PS122/4_43-158; RAD_S; Radiation Station; Sea Ice Physics @ AWI; snow depth; solar radiation; albedo; Antarc*; Antarctic; Sea ice
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.948828; https://doi.org/10.1594/PANGAEA.948828

Solar radiation over and under sea ice was measured by radiation station 2020R11, an autonomous platform, installed on drifting Second-Year-Ice (SYI) 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 26 March 2020 and 01 August 2020 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 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.