On 04.06.2019, after a successful 21-day international campaign dedicated to 150 years of BAS and 35 years of R/V Akademik, the research vessel arrived in Varna.
The main objective of the cruise is to collect in situ bio-optical measurements needed to support remote sensing applications for operational monitoring and climate studies in the Black Sea. The sampling area was restricted to the regions of the Black Sea exhibiting the highest environmental variability in bio-optical features. The production of state of the art measurements include comprehensive apparent and inherent optical properties of seawater, in addition to the concentration of optically significant constituents.
Primary bio-optical quantities determined during the BIO-OPT 2019 oceanographic cruise
Quantity | Symbol |
Remote sensing reflectance | Rrs |
Diffuse attenuation coefficient | Kd |
Total absorption coefficient | A |
Absorption coefficient of pigmented particles | ap |
Absorption coefficient of non-pigmented particles | adt |
Absorption coefficient of colored diss. organic matter | ay |
Scattering coefficient | B |
Backscattering coefficient | bb |
Salinity and temperature | S&T&FL |
Total suspended matter | TSM |
Pigments concentration | CHL |
Aerosol optical thickness | τa |
Phytoplankton species diversity |
The oceanographic cruise led to the completion of 124 comprehensive measurement stations of which 80 were collected during the first leg and 44 during the second.
