Light Regimes under Arctic Sea Ice in Summer

Here we present field observations of light measurements under sea ice in the central Arctic Ocean during summer 2011. Spectral radiation measurements were performed using a Remotely Operated Vehicle (ROV), and were co-located with physical, biological, and biogeochemical sampling of sea ice and water. Based on the results from these station measurements, we found characteristic differences in light regimes of multi- (MYI) and first-year sea ice (FYI) as well as Atlantic and Pacific water masses. Including remote sensing and re-analyses data, it was possible to extrapolate some findings to the Arctic Ocean in summer.