Recognising cyanobacterial blooms based on their optical signature : a modelling study

摘要: Mass populations of cyanobacteria are increasingly attracting the attention environment agencies, water authorities, and human animal health organizations, since they can present a range quality treatment problems as well hazards to health. The problem is especially severe in Baltic Sea where cyanobacterial blooms occur every summer covering areas more than 100 000 km 2 . We studied optical properties several phytoplankton species (including cyanobacteria) region. measurements results were used bio-optical model together with other from literature. Our show that have characteristic double feature (peak at 650 nm phycocyanin absorption near 630 nm) their reflectance spectra which be detected by remote sensing instruments. estimation for open waters shows concentration chlorophyll has 8-10 mg m -3 before becomes detectable instruments spectral resolution 10 signal-to-noise-ratio 1000:1. Therefore, it highly unlikely early warning emerging potentially harmful concentrations higher 4 qualify here.