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arXiv:astro-ph/0510384v113Oct2005 F. Casoli, T. Contini, J.M. Hameury, and L. Pagani (eds)
 

Summary: arXiv:astro-ph/0510384v113Oct2005
SF2A 2005
F. Casoli, T. Contini, J.M. Hameury, and L. Pagani (eds)
NEAR-UV TO NEAR-IR DISK-AVERAGED EARTH'S
SPECTRA FROM MOON'S EARTHSHINE OBSERVATIONS
Hamdani, S.1, Arnold, L.1, Foellmi, C.2, Berthier, J.3, Briot, D.4,
Francois, P.4, Riaud, P.5 and Schneider, J.4
Abstract. We discuss a series of Earthshine spectra obtained with the
NTT/EMMI instrument between 320nm and 1020nm with a resolution of
R=450 in the blue and R=250 in the red. These ascending and descend-
ing Moon's Earthshine spectra taken from Chile give disk-averaged spectra
for two different Earth's phases. The spectra show the ozone (Huggins and
Chappuis bands), oxygen and water vapour absorption bands, and also the
stronger Rayleigh scattering in the blue. Removing the known telluric ab-
sorptions reveals a spectral feature around 700nm which is attributed to the
vegetation stronger reflectivity in the near-IR, so-called vegetation red-edge.
1 Introduction
Since the first measurements of Earth disk-averaged reflectance spectra by Arnold
et al. (2002) and Woolf et al. (2002), several attempts have been successful in the
same spectral bandwidth (Seager et al. 2005, Monta~nŽes-Rodriguez et al. 2005).

  

Source: Arnold, Luc - Observatoire de Haute-Provence

 

Collections: Physics