Transmitted solar irradiance was measured using an ACC (Advanced-Cosine-Collector) RAMSES hyper-spectral radiometer (TriOS) mounted on the ROV during the MOSAiC expedition...
Downward spectral solar irradiance as measured in different depths under sea ice (transmitted irradiance). The irradiance sensor (cos-collector) was installed on the ROV.
Measurements of light extinction were made from a small boat at designated stations. Measurements were taken above the water (AIR), 10 cm below the surface (SURFACE) and at depths from 25 cm (D_025cm)
