title: Optical closure in a complex coastal environment: particle effects.
abstract: An optical dataset was collected on a mooring in the Santa Barbara Channel. Radiative transfer modeling and statistical analyses were employed to investigate sources of variability of in situ remote sensing reflectance [r(rs)(lambda,4 m)] and the f/Q ratio. It was found that the variability of inherent optical properties and the slope of the particle size distribution (xi) were strongly related to the variability of r(rs)(lambda,4 m). The variability of f/Q was strongly affected by particle type characteristics. A semianalytical radiative transfer model was applied and effects of variable particle characteristics on optical closure were evaluated. Closure was best achieved in waters composed of a mixture of biogenic and minerogenic particles.
authors.affiliation: Ocean Physics Laboratory, University of California Santa Barbara, 6487 Calle Real, Suite A, Goleta, California 93117, USA. grace.chang@opl.ucsb.edu
authors.forename: Grace
authors.initials: G
authors.lastname: Chang
authors.forename: Andrew
authors.initials: A
authors.lastname: Barnard
authors.forename: J Ronald V
authors.initials: JR
authors.lastname: Zaneveld