title: Accurate estimation of the backscattering coefficient by light scattering at two backward angles.
abstract: Backscattering coefficients are frequently estimated from light scattering at one backward angle multiplied by a conversion factor. We determined that the shapes of the volume scattering functions (VSFs), particularly for scattering angles larger than 170°, cause significant variations in the conversion factor at 120°. Our approach uses the ratio of scattering at 170° and at 120°, which is a good indicator of the shape differences of the VSFs for most oceanic waters and wavelengths in the visible range. The proposed method provides significant accuracy improvement in the determination of the backscattering coefficients with a prediction error of 3% of the mean.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Tan
authors.forename: Tomohiko
authors.initials: T
authors.lastname: Oishi
authors.forename: Akihiko
authors.initials: A
authors.lastname: Tanaka
authors.forename: Roland
authors.initials: R
authors.lastname: Doerffer
mesh_terms: D000465:Algorithms; D004784:Environmental Monitoring / Q000379:methods; D008027:Light; D009391:Nephelometry and Turbidimetry; D055095:Optics and Photonics; D052638:Particulate Matter; D010839:Phytoplankton; D058998:Remote Sensing Technology; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D014871:Water Microbiology
chemical_list: D052638:Particulate Matter