of light penetrating into the Arctic Ocean, enhancing sea-ice melt and affecting sea-ice and upper-ocean ecosystems. Radiation fluxes through summer sea ice in the Arctic [...] energy fluxes through Arctic sea ice Arndt and Nicolaus ( 2014, TC; doi:10.5194/tc-8-2219-2014 ) In this study, we quantify solar shortwave fluxes through sea ice for the entire Arctic during all seasons [...] of melt onset and the correct classification of ice types. Radiation fluxes through Arctic sea ice Changes in Arctic sea ice result in increasing light transmittance and absorption Nicolaus et al. ( 2012