Optical closure in a complex coastal environment: particle effects.
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.
Chang
Grace
G
Ocean Physics Laboratory, University of California Santa Barbara, 6487 Calle Real, Suite A, Goleta, California 93117, USA. grace.chang@opl.ucsb.edu
Barnard
Andrew
A
Zaneveld
J Ronald V
JR