Skyradiometer data at Syowa station

A sky radiometer was installed at the Showa Station to measure the direct solar radiation and the sky radiance distribution in the near-ultraviolet, visible, and near-infrared regions. Continuous observations have been carried out except during the polar night period. From the obtained radiation data, we derive the aerosol optical thickness, which represents the total vertical column amount of atmospheric aerosol particles, the Angstrom exponent, the particle size distribution, and the single scattering albedo using an inversion algorithm.