Quantitative estimation of the underwater radiance distribution

Marlon R. Lewis, Jianwei Wei, Ronnie Van Dommelen, Kenneth Voss

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Within the Radiance in a Dynamic Ocean (RaDyO) program, we have created and deployed a high dynamic range camera that can resolve the full spherical radiance distribution at the ocean surface and at depth. We present here the first results from deployments of the camera in near-surface water in eutrophic, mesotropic, and oligotropic environments. The instrument resolves the dynamics and fine structure of both the downwelling and upwelling radiance distribution and its variation with depth in these optically diverse water types. The various irradiances (Ed, Eu, Eo, Eou, and Eod) are computed by integration. The distribution functions (e.g., the average cosines) are computed directly, as are the various diffuse attenuation coefficients. The fully specified radiance field therefore provides all the pertinent information to derive not only all of the apparent optical properties but, in principle, the inherent optical properties such as the absorption coefficient and the phase function as well. Comparison of the measured radiance field to independent measurements has shown very good agreement.

Original languageEnglish (US)
Article numberC00H06
JournalJournal of Geophysical Research C: Oceans
Volume116
Issue number10
DOIs
StatePublished - 2011

Fingerprint

radiance
Optical properties
Cameras
optical property
Surface waters
Distribution functions
cameras
ocean dynamics
optical properties
ocean surface
absorption coefficient
upwelling water
attenuation coefficients
downwelling
surface water
irradiance
Water
dynamic range
sea surface
absorptivity

ASJC Scopus subject areas

  • Space and Planetary Science
  • Geochemistry and Petrology
  • Geophysics
  • Earth and Planetary Sciences (miscellaneous)
  • Oceanography

Cite this

Quantitative estimation of the underwater radiance distribution. / Lewis, Marlon R.; Wei, Jianwei; Van Dommelen, Ronnie; Voss, Kenneth.

In: Journal of Geophysical Research C: Oceans, Vol. 116, No. 10, C00H06, 2011.

Research output: Contribution to journalArticle

Lewis, Marlon R. ; Wei, Jianwei ; Van Dommelen, Ronnie ; Voss, Kenneth. / Quantitative estimation of the underwater radiance distribution. In: Journal of Geophysical Research C: Oceans. 2011 ; Vol. 116, No. 10.
@article{4e3c0ac33f8b48daa9121f7681f0a3f8,
title = "Quantitative estimation of the underwater radiance distribution",
abstract = "Within the Radiance in a Dynamic Ocean (RaDyO) program, we have created and deployed a high dynamic range camera that can resolve the full spherical radiance distribution at the ocean surface and at depth. We present here the first results from deployments of the camera in near-surface water in eutrophic, mesotropic, and oligotropic environments. The instrument resolves the dynamics and fine structure of both the downwelling and upwelling radiance distribution and its variation with depth in these optically diverse water types. The various irradiances (Ed, Eu, Eo, Eou, and Eod) are computed by integration. The distribution functions (e.g., the average cosines) are computed directly, as are the various diffuse attenuation coefficients. The fully specified radiance field therefore provides all the pertinent information to derive not only all of the apparent optical properties but, in principle, the inherent optical properties such as the absorption coefficient and the phase function as well. Comparison of the measured radiance field to independent measurements has shown very good agreement.",
author = "Lewis, {Marlon R.} and Jianwei Wei and {Van Dommelen}, Ronnie and Kenneth Voss",
year = "2011",
doi = "10.1029/2011JC007275",
language = "English (US)",
volume = "116",
journal = "Journal of Geophysical Research: Oceans",
issn = "2169-9275",
publisher = "Wiley-Blackwell",
number = "10",

}

TY - JOUR

T1 - Quantitative estimation of the underwater radiance distribution

AU - Lewis, Marlon R.

AU - Wei, Jianwei

AU - Van Dommelen, Ronnie

AU - Voss, Kenneth

PY - 2011

Y1 - 2011

N2 - Within the Radiance in a Dynamic Ocean (RaDyO) program, we have created and deployed a high dynamic range camera that can resolve the full spherical radiance distribution at the ocean surface and at depth. We present here the first results from deployments of the camera in near-surface water in eutrophic, mesotropic, and oligotropic environments. The instrument resolves the dynamics and fine structure of both the downwelling and upwelling radiance distribution and its variation with depth in these optically diverse water types. The various irradiances (Ed, Eu, Eo, Eou, and Eod) are computed by integration. The distribution functions (e.g., the average cosines) are computed directly, as are the various diffuse attenuation coefficients. The fully specified radiance field therefore provides all the pertinent information to derive not only all of the apparent optical properties but, in principle, the inherent optical properties such as the absorption coefficient and the phase function as well. Comparison of the measured radiance field to independent measurements has shown very good agreement.

AB - Within the Radiance in a Dynamic Ocean (RaDyO) program, we have created and deployed a high dynamic range camera that can resolve the full spherical radiance distribution at the ocean surface and at depth. We present here the first results from deployments of the camera in near-surface water in eutrophic, mesotropic, and oligotropic environments. The instrument resolves the dynamics and fine structure of both the downwelling and upwelling radiance distribution and its variation with depth in these optically diverse water types. The various irradiances (Ed, Eu, Eo, Eou, and Eod) are computed by integration. The distribution functions (e.g., the average cosines) are computed directly, as are the various diffuse attenuation coefficients. The fully specified radiance field therefore provides all the pertinent information to derive not only all of the apparent optical properties but, in principle, the inherent optical properties such as the absorption coefficient and the phase function as well. Comparison of the measured radiance field to independent measurements has shown very good agreement.

UR - http://www.scopus.com/inward/record.url?scp=80055014811&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80055014811&partnerID=8YFLogxK

U2 - 10.1029/2011JC007275

DO - 10.1029/2011JC007275

M3 - Article

VL - 116

JO - Journal of Geophysical Research: Oceans

JF - Journal of Geophysical Research: Oceans

SN - 2169-9275

IS - 10

M1 - C00H06

ER -