Article
 

Theoretical derivation of the depth average of remotely sensed optical parameters

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/2z10wr76g

Descriptions

Attribute NameValues
Creator
Abstract
  • The dependence of the reflectance at the surface on the vertical structure of optical parameters is derived from first principles. It is shown that the depth dependence is a function of the derivative of the round trip attenuation of the downwelling and backscattered light. Previously the depth dependence was usually modeled as being dependent on the round trip attenuation. Using the new relationship one can calculate the contribution of the mixed layer to the overall reflectance at the surface. This allows one to determine whether or not to ignore the vertical structure at greater depth. It is shown that the important parameter to average is the ratio of the backscattering and absorption coefficients. The surface reflectance is related to the weighted average of this parameter, not the ratio of the weighted average of the backscattering and the weighted average of the absorption. Only in the special case of "optical homogeneity" where the ratio of the backscattering and absorption coefficients does not vary with depth, can the vertical structure be ignored. Other special cases including constant backscattering and variable absorption are also investigated.
  • This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/home.cfm. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
  • Keywords: Ocean optics, Remote sensing
Resource Type
DOI
Date Available
Date Issued
Citation
Journal Title
Journal Volume
  • 13
Journal Issue/Number
  • 22
Rights Statement
Funding Statement (additional comments about funding)
  • This work was supported by the Ocean Biology/Biogeochemistry Program of NASA and the Environmental Optics Program of ONR.
Publisher
Language
Replaces

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details ZaneveldRonaldCEOASTheoreticalDerivationDepth.pdf 2017-07-21 Public Download