Atmospheric and in-water radiative transfer model validation with BGC-Argo float data in the Mediterranean Sea
With that in mind, an ocean-atmosphere spectral irradiance model was adopted with the final aim of upgrading the existing light parameterization for the CMEMS Mediterranean Sea biogeochemistry component.
We hereby demonstrate the first findings of a 1-dimensional multi-spectral bio-optical model comparison with the BGC-Argo data set in the Mediterranean Sea (including 4700 profiles between 2012 and 2017) in two different ways. Firstly, in the form of a match-up of surface downwelling irradiance data from BGC-Argo floats (at three wavelengths, i.e. 380, 412 and 490 nm) versus in-water irradiance obtained with the use of the atmospheric component of the OASIM spectral irradiance model. Secondly, through an in-water three-stream radiative transfer model validation with BGC-Argo radiometric profiles. More specifically, we test different parameterizations of inherent optical properties of the major water constituents, i.e. pure water, non-algal particles, phytoplankton pigments and colored dissolved organic matter, and subsequently show the configuration that gives the highest skill when comparing modelled and measured radiometric profiles.