Downward spectral solar irradiance as measured in different depths under sea ice (transmitted irradiance) at station ALERT2018_15_1@en

Measurements of transmitted solar radiation under sea ice have been performed on First-Year-Ice (FYI) and Multi-Year-Ice (MYI) during the ALERT2018 campaign (Multidisciplinary Arctic Program (MAP) - Last Ice) off Alert, Nunavut, Canada in the Lincoln Sea between 07 May and 23 May 2018. The radiation measurements have been performed with Ramses spectral radiometes (TriOS, Rastede, Germany). 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). The irradiance sensor (cos-collector) for energy budget calculations was installed on the ROV. All times are given in UTC.