| a-pl | Light absorbtion coefficient by photosynthetic pigments |
| a-ys | Light absorbtion coefficient by yellow substances |
| c | Beam attenuation coefficient for selected wavelengths |
| Ed(0+) | Downward irradiance above water surface |
| Ed(0-) | Downward irradiance below water surface |
| Ed(z) | Vertical profiles of downwelling irradiance for selected wavelengths |
| Ed-pyr | Downward irradiance on the water surface (pyranometer) |
| Lidar-Aer | Lidar measured distance profiles of marine aerosol backscattering |
| Lidar-Chl | Spectra of sea-water fluorescence measured with a lidar system |
| Lidar-Flu | Index of oil fluorescence in surface waters |
| Lu(0+) | Upwelling radiance above water surface |
| Lu(0-) | Upwelling radiance below water surface |
| Lu(z) | Vertical profiles of upwelling radiance for selected wavelengths |
| Kd | Downward irradiance attenuation coefficient |
| Kd-M | Downward irradiance attenuation coefficient (data from MER) |