Abstract

Uncertainties associated with the derivation of the exact normalized water-leaving radiance (LWN) from an above-water radiometric system were analyzed in Harmel et al. [Appl. Opt. 50, 5842 (2011) [CrossRef]  ] based on collocated hyperspectral (HyperSAS) and multispectral (SeaPRISM) systems installed on the Long Island Sound Coastal Observational (LISCO) platform. Based on a 1.5 year time series of LISCO data, uncertainty contributors in the derivation of LWN were quantified in units of unbiased relative percentage differences (URPD) by applying the different steps of the respective data processing incrementally. Results showed that discrepancy between LWN data of two systems is significantly reduced when the average total sea radiance data of SeaPRISM is used in lieu of the standard one, which utilizes only the lowest total sea radiance measurements to remove the sky glint perturbations. The Zibordi comment [Appl. Opt. 51, 3888 (2012)] rejects the conclusion that attributes the sky glint removal step as the major uncertainty contributor in the SeaPRISM processing. It then states that the observed discrepancy might be due to an increased probability of sun-glint contamination in HyperSAS measurements because of its wider field of view and longer integration time. It was also underlined that observed dispersion between the atmospheric transmittance data derived from HyperSAS and SeaPRISM measurements can be attributed to probable contamination by stray light perturbation or issues with the noncosine response of the HyperSAS irradiance sensor. Finally, it was suggested to thoroughly investigate those instrumental perturbations. In this reply, impacts of nonperfect cosine response of the irradiance sensor are shown to be relatively low (<2% on average) and therefore can only partially explain the bias in atmospheric transmittance. Additional discrepancies between the HyperSAS and SeaPRISM downwelling irradiance derivation are attributed to the presence of absorbing aerosols. Intercomparisons of the total sea radiance and nonnormalized water-leaving radiance, complementary to those discussed in the LISCO paper, are analyzed, and this analysis shows that discrepancies in normalized water-leaving radiance retrievals arise from data processing and not from instrumental uncertainty. In addition, limitations in the standard data processing to meaningfully derive normalized water-leaving radiance for various appropriate viewing configurations are discussed. It is finally advocated that the issue of sky glint perturbation correction requires further analysis based on radiative transfer computations, including refined modeling of wave slope distributions.

© 2012 Optical Society of America

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    [CrossRef]
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2012 (2)

2011 (3)

2010 (1)

2009 (2)

S. Kay, J. D. Hedley, and S. Lavender, “Sun glint correction of high and low spatial resolution images of aquatic scenes: a review of methods for visible and near-infrared wavelengths,” Remote Sens. 1, 697–730 (2009).
[CrossRef]

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, and G. Schuster, “AERONET-OC: a network for the validation of ocean color primary radiometric products,” J. Atmos. Ocean. Technol. 26, 1634–1651 (2009).
[CrossRef]

2008 (1)

M. Ottaviani, R. Spurr, K. Stamnes, W. Li, W. Su, and W. Wiscombe, “Improving the description of sunglint for accurate prediction of remotely sensed radiances,” J. Quant. Spectrosc. Radiat. Transfer 109, 2364–2375 (2008).
[CrossRef]

2007 (2)

F. Mélin, G. Zibordi, and J. F. Berthon, “Assessment of satellite ocean color products at a coastal site,” Remote Sens. Environ. 110, 192–215 (2007).
[CrossRef]

G. Zibordi and B. Bulgarelli, “Effects of cosine error in irradiance measurements from field ocean color radiometers,” Appl. Opt. 46, 5529–5538 (2007).
[CrossRef]

2006 (1)

S. W. Bailey and P. J. Werdell, “A multi-sensor approach for the on-orbit validation of ocean color satellite data products,” Remote Sens. Environ. 102, 12–23 (2006).
[CrossRef]

2003 (1)

G. Thuillier, M. Herse, D. Labs, T. Foujols, W. Peetermans, D. Gillotay, P. C. Simon, and H. Mandel, “The solar spectral irradiance from 200 to 2400 nm as measured by the SOLSPEC spectrometer from the ATLAS and EURECA missions,” Sol. Phys. 214, 1–22 (2003).
[CrossRef]

2002 (1)

S. B. Hooker, G. Lazin, G. Zibordi, and S. McLean, “An evaluation of above- and in-water methods for determining water-leaving radiances,” J. Atmos. Ocean. Technol. 19, 486–515 (2002).
[CrossRef]

2001 (2)

C. Moulin, H. R. Gordon, R. M. Chomko, V. F. Banzon, and R. H. Evans, “Atmospheric correction of ocean color imagery through thick layers of Saharan dust,” Geophys. Res. Lett. 28, 5–8 (2001).
[CrossRef]

M. Chami, R. Santer, and E. Dilligeard, “Radiative transfer model for the computation of radiance and polarization in an ocean-atmosphere system: polarization properties of suspended matter for remote sensing,” Appl. Opt. 40, 2398–2416 (2001).
[CrossRef]

1999 (1)

1997 (1)

1969 (1)

M. Sancer, “Shadow-corrected electromagnetic scattering from a randomly rough surface,” IEEE Trans. Antennas Propag. 17, 577–585 (1969).
[CrossRef]

1954 (1)

Ahmed, S.

Arnone, R.

Bailey, S. W.

S. W. Bailey and P. J. Werdell, “A multi-sensor approach for the on-orbit validation of ocean color satellite data products,” Remote Sens. Environ. 102, 12–23 (2006).
[CrossRef]

Banzon, V. F.

C. Moulin, H. R. Gordon, R. M. Chomko, V. F. Banzon, and R. H. Evans, “Atmospheric correction of ocean color imagery through thick layers of Saharan dust,” Geophys. Res. Lett. 28, 5–8 (2001).
[CrossRef]

Berthon, J. F.

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, G. Schuster, B. Fabbri, S. Kaitala, and J. Seppala, “Long Island Sound Coastal Observatory: assessment of above-water radiometric measurement uncertainties using collocated multi and hyperspectral systems: comment,” Appl. Opt. 51, 3888–3892 (2012).

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, and G. Schuster, “AERONET-OC: a network for the validation of ocean color primary radiometric products,” J. Atmos. Ocean. Technol. 26, 1634–1651 (2009).
[CrossRef]

F. Mélin, G. Zibordi, and J. F. Berthon, “Assessment of satellite ocean color products at a coastal site,” Remote Sens. Environ. 110, 192–215 (2007).
[CrossRef]

Bhandari, P.

Y. You, G. W. Kattawar, K. J. Voss, P. Bhandari, J. Wei, M. Lewis, C. J. Zappa, and H. Schultz, “Polarized light field under dynamic ocean surfaces: numerical modeling compared with measurements,” J. Geophys. Res. 116, C00H05 (2011).
[CrossRef]

Bulgarelli, B.

Chami, M.

Chomko, R. M.

C. Moulin, H. R. Gordon, R. M. Chomko, V. F. Banzon, and R. H. Evans, “Atmospheric correction of ocean color imagery through thick layers of Saharan dust,” Geophys. Res. Lett. 28, 5–8 (2001).
[CrossRef]

Cox, C.

D’Alimonte, D.

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, G. Schuster, B. Fabbri, S. Kaitala, and J. Seppala, “Long Island Sound Coastal Observatory: assessment of above-water radiometric measurement uncertainties using collocated multi and hyperspectral systems: comment,” Appl. Opt. 51, 3888–3892 (2012).

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, and G. Schuster, “AERONET-OC: a network for the validation of ocean color primary radiometric products,” J. Atmos. Ocean. Technol. 26, 1634–1651 (2009).
[CrossRef]

Darecki, M.

Dilligeard, E.

Du,

Evans, R. H.

C. Moulin, H. R. Gordon, R. M. Chomko, V. F. Banzon, and R. H. Evans, “Atmospheric correction of ocean color imagery through thick layers of Saharan dust,” Geophys. Res. Lett. 28, 5–8 (2001).
[CrossRef]

Fabbri, B.

Feng, H.

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, G. Schuster, B. Fabbri, S. Kaitala, and J. Seppala, “Long Island Sound Coastal Observatory: assessment of above-water radiometric measurement uncertainties using collocated multi and hyperspectral systems: comment,” Appl. Opt. 51, 3888–3892 (2012).

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, and G. Schuster, “AERONET-OC: a network for the validation of ocean color primary radiometric products,” J. Atmos. Ocean. Technol. 26, 1634–1651 (2009).
[CrossRef]

Foujols, T.

G. Thuillier, M. Herse, D. Labs, T. Foujols, W. Peetermans, D. Gillotay, P. C. Simon, and H. Mandel, “The solar spectral irradiance from 200 to 2400 nm as measured by the SOLSPEC spectrometer from the ATLAS and EURECA missions,” Sol. Phys. 214, 1–22 (2003).
[CrossRef]

Gilerson, A.

Giles, D.

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, G. Schuster, B. Fabbri, S. Kaitala, and J. Seppala, “Long Island Sound Coastal Observatory: assessment of above-water radiometric measurement uncertainties using collocated multi and hyperspectral systems: comment,” Appl. Opt. 51, 3888–3892 (2012).

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, and G. Schuster, “AERONET-OC: a network for the validation of ocean color primary radiometric products,” J. Atmos. Ocean. Technol. 26, 1634–1651 (2009).
[CrossRef]

Gillotay, D.

G. Thuillier, M. Herse, D. Labs, T. Foujols, W. Peetermans, D. Gillotay, P. C. Simon, and H. Mandel, “The solar spectral irradiance from 200 to 2400 nm as measured by the SOLSPEC spectrometer from the ATLAS and EURECA missions,” Sol. Phys. 214, 1–22 (2003).
[CrossRef]

Gordon,

Gordon, H. R.

C. Moulin, H. R. Gordon, R. M. Chomko, V. F. Banzon, and R. H. Evans, “Atmospheric correction of ocean color imagery through thick layers of Saharan dust,” Geophys. Res. Lett. 28, 5–8 (2001).
[CrossRef]

Harmel, T.

Hedley, J.

Hedley, J. D.

S. Kay, J. D. Hedley, and S. Lavender, “Sun glint correction of high and low spatial resolution images of aquatic scenes: a review of methods for visible and near-infrared wavelengths,” Remote Sens. 1, 697–730 (2009).
[CrossRef]

Herse, M.

G. Thuillier, M. Herse, D. Labs, T. Foujols, W. Peetermans, D. Gillotay, P. C. Simon, and H. Mandel, “The solar spectral irradiance from 200 to 2400 nm as measured by the SOLSPEC spectrometer from the ATLAS and EURECA missions,” Sol. Phys. 214, 1–22 (2003).
[CrossRef]

Hlaing, S.

Holben, B. N.

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, G. Schuster, B. Fabbri, S. Kaitala, and J. Seppala, “Long Island Sound Coastal Observatory: assessment of above-water radiometric measurement uncertainties using collocated multi and hyperspectral systems: comment,” Appl. Opt. 51, 3888–3892 (2012).

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, and G. Schuster, “AERONET-OC: a network for the validation of ocean color primary radiometric products,” J. Atmos. Ocean. Technol. 26, 1634–1651 (2009).
[CrossRef]

Hooker, S. B.

S. B. Hooker, G. Lazin, G. Zibordi, and S. McLean, “An evaluation of above- and in-water methods for determining water-leaving radiances,” J. Atmos. Ocean. Technol. 19, 486–515 (2002).
[CrossRef]

Kaitala, S.

Kattawar, G. W.

Y. You, G. W. Kattawar, K. J. Voss, P. Bhandari, J. Wei, M. Lewis, C. J. Zappa, and H. Schultz, “Polarized light field under dynamic ocean surfaces: numerical modeling compared with measurements,” J. Geophys. Res. 116, C00H05 (2011).
[CrossRef]

Y. You, D. Stramski, M. Darecki, and G. W. Kattawar, “Modeling of wave-induced irradiance fluctuations at near-surface depths in the ocean: a comparison with measurements,” Appl. Opt. 49, 1041–1053 (2010).
[CrossRef]

Kay, S.

S. Kay, J. Hedley, S. Lavender, and A. Nimmo-Smith, “Light transfer at the ocean surface modeled using high resolution sea surface realizations,” Opt. Express 19, 6493–6504 (2011).
[CrossRef]

S. Kay, J. D. Hedley, and S. Lavender, “Sun glint correction of high and low spatial resolution images of aquatic scenes: a review of methods for visible and near-infrared wavelengths,” Remote Sens. 1, 697–730 (2009).
[CrossRef]

Labs, D.

G. Thuillier, M. Herse, D. Labs, T. Foujols, W. Peetermans, D. Gillotay, P. C. Simon, and H. Mandel, “The solar spectral irradiance from 200 to 2400 nm as measured by the SOLSPEC spectrometer from the ATLAS and EURECA missions,” Sol. Phys. 214, 1–22 (2003).
[CrossRef]

Lavender, S.

S. Kay, J. Hedley, S. Lavender, and A. Nimmo-Smith, “Light transfer at the ocean surface modeled using high resolution sea surface realizations,” Opt. Express 19, 6493–6504 (2011).
[CrossRef]

S. Kay, J. D. Hedley, and S. Lavender, “Sun glint correction of high and low spatial resolution images of aquatic scenes: a review of methods for visible and near-infrared wavelengths,” Remote Sens. 1, 697–730 (2009).
[CrossRef]

Lazin, G.

S. B. Hooker, G. Lazin, G. Zibordi, and S. McLean, “An evaluation of above- and in-water methods for determining water-leaving radiances,” J. Atmos. Ocean. Technol. 19, 486–515 (2002).
[CrossRef]

Legbandt, T.

Lewis, M.

Y. You, G. W. Kattawar, K. J. Voss, P. Bhandari, J. Wei, M. Lewis, C. J. Zappa, and H. Schultz, “Polarized light field under dynamic ocean surfaces: numerical modeling compared with measurements,” J. Geophys. Res. 116, C00H05 (2011).
[CrossRef]

Li, W.

M. Ottaviani, R. Spurr, K. Stamnes, W. Li, W. Su, and W. Wiscombe, “Improving the description of sunglint for accurate prediction of remotely sensed radiances,” J. Quant. Spectrosc. Radiat. Transfer 109, 2364–2375 (2008).
[CrossRef]

Mandel, H.

G. Thuillier, M. Herse, D. Labs, T. Foujols, W. Peetermans, D. Gillotay, P. C. Simon, and H. Mandel, “The solar spectral irradiance from 200 to 2400 nm as measured by the SOLSPEC spectrometer from the ATLAS and EURECA missions,” Sol. Phys. 214, 1–22 (2003).
[CrossRef]

McLean, S.

S. B. Hooker, G. Lazin, G. Zibordi, and S. McLean, “An evaluation of above- and in-water methods for determining water-leaving radiances,” J. Atmos. Ocean. Technol. 19, 486–515 (2002).
[CrossRef]

S. McLean, Radiometric Data Processing Course, Ocaen Optics XIX Conference, Barga, Italy.

Mélin, F.

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, G. Schuster, B. Fabbri, S. Kaitala, and J. Seppala, “Long Island Sound Coastal Observatory: assessment of above-water radiometric measurement uncertainties using collocated multi and hyperspectral systems: comment,” Appl. Opt. 51, 3888–3892 (2012).

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, and G. Schuster, “AERONET-OC: a network for the validation of ocean color primary radiometric products,” J. Atmos. Ocean. Technol. 26, 1634–1651 (2009).
[CrossRef]

F. Mélin, G. Zibordi, and J. F. Berthon, “Assessment of satellite ocean color products at a coastal site,” Remote Sens. Environ. 110, 192–215 (2007).
[CrossRef]

Mobley, C. D.

Moulin, C.

C. Moulin, H. R. Gordon, R. M. Chomko, V. F. Banzon, and R. H. Evans, “Atmospheric correction of ocean color imagery through thick layers of Saharan dust,” Geophys. Res. Lett. 28, 5–8 (2001).
[CrossRef]

Munk, W.

Nimmo-Smith, A.

Ottaviani, M.

M. Ottaviani, R. Spurr, K. Stamnes, W. Li, W. Su, and W. Wiscombe, “Improving the description of sunglint for accurate prediction of remotely sensed radiances,” J. Quant. Spectrosc. Radiat. Transfer 109, 2364–2375 (2008).
[CrossRef]

Peetermans, W.

G. Thuillier, M. Herse, D. Labs, T. Foujols, W. Peetermans, D. Gillotay, P. C. Simon, and H. Mandel, “The solar spectral irradiance from 200 to 2400 nm as measured by the SOLSPEC spectrometer from the ATLAS and EURECA missions,” Sol. Phys. 214, 1–22 (2003).
[CrossRef]

Sancer, M.

M. Sancer, “Shadow-corrected electromagnetic scattering from a randomly rough surface,” IEEE Trans. Antennas Propag. 17, 577–585 (1969).
[CrossRef]

Santer, R.

Schultz, H.

Y. You, G. W. Kattawar, K. J. Voss, P. Bhandari, J. Wei, M. Lewis, C. J. Zappa, and H. Schultz, “Polarized light field under dynamic ocean surfaces: numerical modeling compared with measurements,” J. Geophys. Res. 116, C00H05 (2011).
[CrossRef]

Schuster, G.

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, G. Schuster, B. Fabbri, S. Kaitala, and J. Seppala, “Long Island Sound Coastal Observatory: assessment of above-water radiometric measurement uncertainties using collocated multi and hyperspectral systems: comment,” Appl. Opt. 51, 3888–3892 (2012).

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, and G. Schuster, “AERONET-OC: a network for the validation of ocean color primary radiometric products,” J. Atmos. Ocean. Technol. 26, 1634–1651 (2009).
[CrossRef]

Seppala, J.

Simon, P. C.

G. Thuillier, M. Herse, D. Labs, T. Foujols, W. Peetermans, D. Gillotay, P. C. Simon, and H. Mandel, “The solar spectral irradiance from 200 to 2400 nm as measured by the SOLSPEC spectrometer from the ATLAS and EURECA missions,” Sol. Phys. 214, 1–22 (2003).
[CrossRef]

Slutsker, I.

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, G. Schuster, B. Fabbri, S. Kaitala, and J. Seppala, “Long Island Sound Coastal Observatory: assessment of above-water radiometric measurement uncertainties using collocated multi and hyperspectral systems: comment,” Appl. Opt. 51, 3888–3892 (2012).

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, and G. Schuster, “AERONET-OC: a network for the validation of ocean color primary radiometric products,” J. Atmos. Ocean. Technol. 26, 1634–1651 (2009).
[CrossRef]

Spurr, R.

M. Ottaviani, R. Spurr, K. Stamnes, W. Li, W. Su, and W. Wiscombe, “Improving the description of sunglint for accurate prediction of remotely sensed radiances,” J. Quant. Spectrosc. Radiat. Transfer 109, 2364–2375 (2008).
[CrossRef]

Stamnes, K.

M. Ottaviani, R. Spurr, K. Stamnes, W. Li, W. Su, and W. Wiscombe, “Improving the description of sunglint for accurate prediction of remotely sensed radiances,” J. Quant. Spectrosc. Radiat. Transfer 109, 2364–2375 (2008).
[CrossRef]

Stramski, D.

Su, W.

M. Ottaviani, R. Spurr, K. Stamnes, W. Li, W. Su, and W. Wiscombe, “Improving the description of sunglint for accurate prediction of remotely sensed radiances,” J. Quant. Spectrosc. Radiat. Transfer 109, 2364–2375 (2008).
[CrossRef]

Thuillier, G.

G. Thuillier, M. Herse, D. Labs, T. Foujols, W. Peetermans, D. Gillotay, P. C. Simon, and H. Mandel, “The solar spectral irradiance from 200 to 2400 nm as measured by the SOLSPEC spectrometer from the ATLAS and EURECA missions,” Sol. Phys. 214, 1–22 (2003).
[CrossRef]

Tonizzo, A.

Vandemark, D.

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G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, and G. Schuster, “AERONET-OC: a network for the validation of ocean color primary radiometric products,” J. Atmos. Ocean. Technol. 26, 1634–1651 (2009).
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Y. You, G. W. Kattawar, K. J. Voss, P. Bhandari, J. Wei, M. Lewis, C. J. Zappa, and H. Schultz, “Polarized light field under dynamic ocean surfaces: numerical modeling compared with measurements,” J. Geophys. Res. 116, C00H05 (2011).
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M. Ottaviani, R. Spurr, K. Stamnes, W. Li, W. Su, and W. Wiscombe, “Improving the description of sunglint for accurate prediction of remotely sensed radiances,” J. Quant. Spectrosc. Radiat. Transfer 109, 2364–2375 (2008).
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Y. You, G. W. Kattawar, K. J. Voss, P. Bhandari, J. Wei, M. Lewis, C. J. Zappa, and H. Schultz, “Polarized light field under dynamic ocean surfaces: numerical modeling compared with measurements,” J. Geophys. Res. 116, C00H05 (2011).
[CrossRef]

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Y. You, G. W. Kattawar, K. J. Voss, P. Bhandari, J. Wei, M. Lewis, C. J. Zappa, and H. Schultz, “Polarized light field under dynamic ocean surfaces: numerical modeling compared with measurements,” J. Geophys. Res. 116, C00H05 (2011).
[CrossRef]

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Zibordi, G.

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, G. Schuster, B. Fabbri, S. Kaitala, and J. Seppala, “Long Island Sound Coastal Observatory: assessment of above-water radiometric measurement uncertainties using collocated multi and hyperspectral systems: comment,” Appl. Opt. 51, 3888–3892 (2012).

G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, and G. Schuster, “AERONET-OC: a network for the validation of ocean color primary radiometric products,” J. Atmos. Ocean. Technol. 26, 1634–1651 (2009).
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G. Zibordi, B. N. Holben, I. Slutsker, D. Giles, D. D’Alimonte, F. Mélin, J. F. Berthon, D. Vandemark, H. Feng, and G. Schuster, “AERONET-OC: a network for the validation of ocean color primary radiometric products,” J. Atmos. Ocean. Technol. 26, 1634–1651 (2009).
[CrossRef]

S. B. Hooker, G. Lazin, G. Zibordi, and S. McLean, “An evaluation of above- and in-water methods for determining water-leaving radiances,” J. Atmos. Ocean. Technol. 19, 486–515 (2002).
[CrossRef]

J. Geophys. Res. (1)

Y. You, G. W. Kattawar, K. J. Voss, P. Bhandari, J. Wei, M. Lewis, C. J. Zappa, and H. Schultz, “Polarized light field under dynamic ocean surfaces: numerical modeling compared with measurements,” J. Geophys. Res. 116, C00H05 (2011).
[CrossRef]

J. Opt. Soc. Am. (1)

J. Quant. Spectrosc. Radiat. Transfer (1)

M. Ottaviani, R. Spurr, K. Stamnes, W. Li, W. Su, and W. Wiscombe, “Improving the description of sunglint for accurate prediction of remotely sensed radiances,” J. Quant. Spectrosc. Radiat. Transfer 109, 2364–2375 (2008).
[CrossRef]

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F. Mélin, G. Zibordi, and J. F. Berthon, “Assessment of satellite ocean color products at a coastal site,” Remote Sens. Environ. 110, 192–215 (2007).
[CrossRef]

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[CrossRef]

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Figures (6)

Fig. 1.
Fig. 1.

Intercomparison of the downwelling irradiance (in mWcm2μm1) derived from SeaPRISM and HyperSAS measurements utilized in the intercomparison of the LISCO article.

Fig. 2.
Fig. 2.

(a) Relative error in downwelling irradiance measurements due to nonperfect cosine response of the sensor for an aerosol optical thickness of 0.1 at 550 nm for the bands centered on 442 (blue circles, bottom), 551 (green circles, center), and 668 nm (red circles, top). The blue triangles hold for a purely molecular atmosphere at 442 nm. (b) Histogram of the solar zenith angles θs leading to the matchup comparison of Fig. 1.

Fig. 3.
Fig. 3.

Time series of the aerosol single scattering albedo ω0 at 442 nm as retrieved by the AERONET system of the LISCO site over the period of the LISCO intercomparison analysis.

Fig. 4.
Fig. 4.

Relative difference between the downwelling irradiances calculated for nonabsorbing aerosol (ω0=1) and for absorbing aerosol (ω0=0.9). Simulations have been carried out with the radiative transfer code OSOA for an aerosol optical thickness of 0.1 at 550 nm and for the bands centered on 442 (blue circles, top), 551 (green circles, center), and 668 nm (red circles, bottom).

Fig. 5.
Fig. 5.

Intercomparison of the total sea radiance (in mWcm2sr1μm1) of SeaPRISM (LT) and HYPERSAS (LT*). (a) 70°φ180° range, (b) 80°φ100° range.

Fig. 6.
Fig. 6.

Intercomparison of the nonnormalized water-leaving radiance, Lw, (in mWcm2sr1μm1) of SeaPRISM and HYPERSAS. (a) 70°φ180° range, (b) 80°φ100° range.

Tables (1)

Tables Icon

Table 1. Average and Standard Deviation of LWN at 551 nm and for all the Wavelengths between 413 and 668 nm, Solar Zenith Angle, Aerosol Optical Thickness τa at 551 nm, and Wind Speed for the Measurement Conditions Leading to the Construction of SeaPRISM and HyperSAS Matchup Intercomparisons

Equations (4)

Equations on this page are rendered with MathJax. Learn more.

URPD=200×1Ni=1Nyixixi+yi,
|URPD|=200×1Ni=1N|yixixi+yi|,
Ed(SeaPRISM)=E0D2T0cosθ0,
ΔEd=100EdmesEdtrueEdtrue

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