Abstract

We propose an algorithm to retrieve the global features of the spectral dependence of the ultraviolet (UV) irradiance from integrated, broadband UV measurements performed with a set of photodiodes with different UV filters. This fit, when applied to ground-based measurements and compared with the incident Solar spectral irradiance on the top of the atmosphere, may be used to extract the spectral dependence of the UV opacity and the most relevant parameters characterizing the scattering with atmospheric aerosol (Angstrom exponent, etc.) as well as the biological effective doses. In this way, using a set of photodiodes instead of a spectrophotometer, one may get spectral information within very low mass, package, and weight constraints, which is particularly useful for space missions. We consider its application for the rover-based exploration of the Martian ground, which is subject to daily and seasonal opacity variations.

© 2007 Optical Society of America

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References

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  1. M.-P. Zorzano, A.-M. Mancho, and L. Vazquez, Appl. Math. Comput. 164, 263 (2005).
    [CrossRef]
  2. M.-P. Zorzano and C. Cordoba-Jabonero, "Influence of aerosol multiple scattering of ultraviolet radiation on Martian atmospheric sensing," Icarus (to be published).
    [PubMed]
  3. F. Montmessin, E. Qumerais, J. L. Bertaux, O. Korablev, P. Rannou, and S. Lebonnois, J. Geophys. Res. 111, E12S06 (2006).
    [CrossRef]
  4. M. T. Lemmon, M. J. Wolff, M. D. Smith, R. T. Clancy, D. Banfield, G. A. Landis, A. Ghosh, P. H. Smith, N. Spanovich, B. Whitney, P. Whelley, R. Greeley, S. Thompson, J. F. Bell III, and S. W. Squyres, Science 306, 1753 (2004).
    [CrossRef] [PubMed]
  5. M. D. Smith, M. D. Greenbelt, M. J. Wolff, R. T. Clancy, N. Spanovich, D. Banfield, A. Ghosh, and the Athena Science Team, in Second Workshop on Mars Atmosphere Modelling and Observations, F.Forget, M.A.Lopez-Valverde, M.C.Desjean, J.P.Huot, F.Lefevre, S.Lebonnois, S.R.Lewis, E.Millour, P.L.Read, and R.J.Wilson, eds. (LMD, IAA, AOPP, CNES, ESA, 2006), p. 133.
  6. S. Perrier, J. L. Bertaux, F. Lefvre, S. Lebonnois, O. Korablev, A. Fedorova, and F. Montmessin, J. Geophys. Res. 111, E09S06 (2006).
    [CrossRef]
  7. G. Thuillier, M. Hersé, D. Labs, T. Foujols, W. Peetermans, D. Gillotay, P. C. Simon, and H. Mandel, Sol. Phys. 214, 1 (2003).
    [CrossRef]
  8. J. Stoer and R. Burlisch, Introdution to Numerical Analysis, 2nd ed. (Springer-Verlag, 1993).
  9. M. R. Patel, A. Brces, T. Kerkgyrt, Gy. Ront, H. Lammer, and J. C. Zarnecki, Adv. Space Res. 33, 1247 (2004).
    [CrossRef]

2006 (2)

F. Montmessin, E. Qumerais, J. L. Bertaux, O. Korablev, P. Rannou, and S. Lebonnois, J. Geophys. Res. 111, E12S06 (2006).
[CrossRef]

S. Perrier, J. L. Bertaux, F. Lefvre, S. Lebonnois, O. Korablev, A. Fedorova, and F. Montmessin, J. Geophys. Res. 111, E09S06 (2006).
[CrossRef]

2005 (1)

M.-P. Zorzano, A.-M. Mancho, and L. Vazquez, Appl. Math. Comput. 164, 263 (2005).
[CrossRef]

2004 (2)

M. R. Patel, A. Brces, T. Kerkgyrt, Gy. Ront, H. Lammer, and J. C. Zarnecki, Adv. Space Res. 33, 1247 (2004).
[CrossRef]

M. T. Lemmon, M. J. Wolff, M. D. Smith, R. T. Clancy, D. Banfield, G. A. Landis, A. Ghosh, P. H. Smith, N. Spanovich, B. Whitney, P. Whelley, R. Greeley, S. Thompson, J. F. Bell III, and S. W. Squyres, Science 306, 1753 (2004).
[CrossRef] [PubMed]

2003 (1)

G. Thuillier, M. Hersé, D. Labs, T. Foujols, W. Peetermans, D. Gillotay, P. C. Simon, and H. Mandel, Sol. Phys. 214, 1 (2003).
[CrossRef]

Adv. Space Res. (1)

M. R. Patel, A. Brces, T. Kerkgyrt, Gy. Ront, H. Lammer, and J. C. Zarnecki, Adv. Space Res. 33, 1247 (2004).
[CrossRef]

Appl. Math. Comput. (1)

M.-P. Zorzano, A.-M. Mancho, and L. Vazquez, Appl. Math. Comput. 164, 263 (2005).
[CrossRef]

Icarus (1)

M.-P. Zorzano and C. Cordoba-Jabonero, "Influence of aerosol multiple scattering of ultraviolet radiation on Martian atmospheric sensing," Icarus (to be published).
[PubMed]

J. Geophys. Res. (2)

F. Montmessin, E. Qumerais, J. L. Bertaux, O. Korablev, P. Rannou, and S. Lebonnois, J. Geophys. Res. 111, E12S06 (2006).
[CrossRef]

S. Perrier, J. L. Bertaux, F. Lefvre, S. Lebonnois, O. Korablev, A. Fedorova, and F. Montmessin, J. Geophys. Res. 111, E09S06 (2006).
[CrossRef]

Science (1)

M. T. Lemmon, M. J. Wolff, M. D. Smith, R. T. Clancy, D. Banfield, G. A. Landis, A. Ghosh, P. H. Smith, N. Spanovich, B. Whitney, P. Whelley, R. Greeley, S. Thompson, J. F. Bell III, and S. W. Squyres, Science 306, 1753 (2004).
[CrossRef] [PubMed]

Sol. Phys. (1)

G. Thuillier, M. Hersé, D. Labs, T. Foujols, W. Peetermans, D. Gillotay, P. C. Simon, and H. Mandel, Sol. Phys. 214, 1 (2003).
[CrossRef]

Other (2)

J. Stoer and R. Burlisch, Introdution to Numerical Analysis, 2nd ed. (Springer-Verlag, 1993).

M. D. Smith, M. D. Greenbelt, M. J. Wolff, R. T. Clancy, N. Spanovich, D. Banfield, A. Ghosh, and the Athena Science Team, in Second Workshop on Mars Atmosphere Modelling and Observations, F.Forget, M.A.Lopez-Valverde, M.C.Desjean, J.P.Huot, F.Lefevre, S.Lebonnois, S.R.Lewis, E.Millour, P.L.Read, and R.J.Wilson, eds. (LMD, IAA, AOPP, CNES, ESA, 2006), p. 133.

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Figures (3)

Fig. 1
Fig. 1

Top, Real signal I d i r ( λ ) , interpolating polynomial Q ( λ ) , and rational function R ( λ ) . Bottom, The linear combination a Q ( λ ) + b R ( λ ) with a + b = 1 and a = 0.77 is indeed a soft interpolation of the direct spectral irradiance on the ground.

Fig. 2
Fig. 2

Comparison of the retrieved τ ( λ ) from the interpolated signal with the real one. The difference in the 250 nm range is the signature of ozone absorption.

Fig. 3
Fig. 3

Total UV irradiance on the Martian surface and retrieved interpolated function convoluted with the CIE action spectrum.

Equations (2)

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( a b c d e ) = M 1 ( C 2 C 3 C 4 A B ) ,
M = ( l 5 l 4 l 3 l 2 l m 5 m 4 m 3 m 2 m n 5 n 4 n 3 n 2 n o 5 p 5 o 4 p 4 o 3 p 3 o 2 p 2 o p q 5 r 5 q 4 r 4 q 3 r 3 q 2 r 2 q r ) ,

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