Parameterization of light absorption by components of seawater in optically complex coastal waters of the Crimea Peninsula (Black Sea)

Appl Opt. 2009 Mar 1;48(7):1249-61. doi: 10.1364/ao.48.001249.

Abstract

The absorption of sunlight by oceanic constituents significantly contributes to the spectral distribution of the water-leaving radiance. Here it is shown that current parameterizations of absorption coefficients do not apply to the optically complex waters of the Crimea Peninsula. Based on in situ measurements, parameterizations of phytoplankton, nonalgal, and total particulate absorption coefficients are proposed. Their performance is evaluated using a log-log regression combined with a low-pass filter and the nonlinear least-square method. Statistical significance of the estimated parameters is verified using the bootstrap method. The parameterizations are relevant for chlorophyll a concentrations ranging from 0.45 up to 2 mg/m(3).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption*
  • Chlorophyll / metabolism
  • Chlorophyll / radiation effects
  • Chlorophyll A
  • Least-Squares Analysis
  • Light*
  • Nonlinear Dynamics
  • Osmolar Concentration
  • Phytoplankton / metabolism
  • Phytoplankton / radiation effects
  • Seawater*
  • Ukraine

Substances

  • Chlorophyll
  • Chlorophyll A