Abstract

A model that relates the coefficients of absorption (a) and backscattering (b b) to diffuse attenuation (K d), radiance reflectance (R L), and the mean cosine for downward irradiance (μd) is presented. Radiance transfer simulations are used to verify the physical validity of the model for a wide range of water column conditions. Analysis of these radiance transfer simulations suggests that absorption and backscattering can be estimated with average errors of 1% and 3%, respectively, if the value of μd is known with depth. If the input data set is restricted to variables that can be derived from measurements of upward radiance (L u) and downward irradiance (E d), it is necessary to use approximate values of μd. Examination of three different approximation schemes for μd shows that the average error for estimating a and b b increases to ∼13%. We tested the model by using measurements of L u and E d collected from case II waters off the west coast of Scotland. The resulting estimates of a and b b were compared with independent in situ measurements of these parameters. Average errors for the data set were of the order of 10% for both absorption and backscattering.

© 2003 Optical Society of America

Full Article  |  PDF Article
Related Articles
Radiative transfer in the ocean: computations relating to the asymptotic and near-asymptotic daylight field

Howard R. Gordon, Kuiyuan Ding, and Weiyan Gong
Appl. Opt. 32(9) 1606-1619 (1993)

Apparent optical properties of oceanic water: dependence on the molecular scattering contribution

André Morel and Hubert Loisel
Appl. Opt. 37(21) 4765-4776 (1998)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (6)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription