Remote sensing reflectance (RRS) at each station was obtained from profiles of upwelling radiance (Lu-( lamda)) and above water solar (downwelling) irradiance (Ed+(lamda)) measured with hyperspectral radiometers (RAMSES, TriOS GmbH, Germany) from 320 to 950 nm (3.3 nm optical resolution, spectral accuracy of 0.3 nm) . We used the same instrumentation, operation procedure and data analysis as in Taylor et al. (2011, doi:10.5194/bg-8-3609-2011) where we followed the NASA protocols (Mueller et al. 2003). This includes a correction for variation in Ed+( lamda) during profiling and excludes the Lu-( lamda) data at depths which are still influenced by surface waves. Analogously to Stramski et al. (2008, doi:10.5194/bg-5-171-2008), we calculated Lu-( lamda, 0m) by extrapolating Lu-( lamda) from below the surface waves using the average upwelling radiance attenuation coefficient for a depth interval between 1 to 11 m, and then derived RRS(lamda) from 0.5425 × Lu-( lamda, 0 m)/Ed+(lamda). Data were convoluted using a FWHM 10nm Gaussian slit reflecting the instrument resolution.