Method for Long-term Estimating Ice Algae Biomass Based on Spectral Attenuation Characteristics of the Sea Ice

Ice algae plays an important role in the polar marine ecosystem, so it is essential to estimate the biomass of polar ice algae. In this paper, we measured the internal irradiance of sea ice and calculated the spectral attenuation characteristics of sea ice media. We used Empirical Orthogonal Function(EOF) analysis to reduce the dimension of data, extract the characteristics of spectral attenuation coefficient, and established the relationship between chlorophyll a concentration and spectral attenuation coefficient through Generalized Linear Model. A method for estimating the biomass of polar ice algae represented by chlorophyll a concentration was proposed.