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Applied Optics

Applied Optics


  • Vol. 42, Iss. 9 — Mar. 20, 2003
  • pp: 1574–1582

Toward closure of upwelling radiance in coastal waters

Grace C. Chang, Tommy D. Dickey, Curtis D. Mobley, Emmanuel Boss, and W. Scott Pegau  »View Author Affiliations

Applied Optics, Vol. 42, Issue 9, pp. 1574-1582 (2003)

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We present three methods for deriving water-leaving radiance L w (λ) and remote-sensing reflectance using a hyperspectral tethered spectral radiometer buoy (HyperTSRB), profiled spectroradiometers, and Hydrolight simulations. Average agreement for 53 comparisons between HyperTSRB and spectroradiometric determinations of L w (λ) was 26%, 13%, and 17% at blue, green, and red wavelengths, respectively. Comparisons of HyperTSRB (and spectroradiometric) L w (λ) with Hydrolight simulations yielded percent differences of 17% (18%), 17% (18%), and 13% (20%) for blue, green, and red wavelengths, respectively. The differences can be accounted for by uncertainties in model assumptions and model input data (chlorophyll fluorescence quantum efficiency and the spectral chlorophyll-specific absorption coefficient for the red wavelengths, and scattering corrections for input ac-9 absorption data and volume scattering function measurements for blue wavelengths) as well as radiance measurement inaccuracies [largely differences in the depth of the L u (λ, z) sensor on the HyperTSRB].

© 2003 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(120.4640) Instrumentation, measurement, and metrology : Optical instruments

Original Manuscript: July 10, 2002
Revised Manuscript: October 10, 2002
Published: March 20, 2003

Grace C. Chang, Tommy D. Dickey, Curtis D. Mobley, Emmanuel Boss, and W. Scott Pegau, "Toward closure of upwelling radiance in coastal waters," Appl. Opt. 42, 1574-1582 (2003)

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