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Proceedings of SPIE - The International Society for Optical Engineering

ISSN:0277786X

2020

Lee, R.I.¹

10.1117/12.2574976

The paper shows the results of optical measurements carried out during the coccolithophore bloom and the primary bio-optical characteristics obtained. Blooming coccolithophores produce a significant amount of mineral suspension, increasing light scattering and reducing the transparency of water. An increase in the backward scattering leads to an increase in the upwelling radiance and the reflectance coefficient of the sea water. On the base of field and satellite data, the characteristics of coccolithophore bloom in June 2017 in the Black Sea are calculated. A weak relationship between the biological and optical characteristics of the bloom is observed. It is shown that in 2017 the optical properties at the test site were determined not only by coccolithophore suspension, but also by a suspension of terrigenous origin. Suspension concentrations and optical parameters during the bloom are estimated.

Beam attenuation coefficient, Black Sea, Coccolithophore, Particle backscattering

2020-12-30 11:47:54