Finding Life On Earth - By Using The Moon |
Finding Life On Earth - By Using The Moon |
Oct 21 2005, 01:52 PM
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Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 |
Paper: astro-ph/0510611
Date: Thu, 20 Oct 2005 14:13:23 GMT (289kb) Title: Near-UV to near-IR disk-averaged Earth's reflectance spectra Authors: S. Hamdani, L. Arnold, C. Foellmi, J. Berthier, D. Briot, P. Francois, P. Riaud and J. Schneider Comments: Proceeding of an oral prensentation at the UAI No200 Colloquium \\ We report 320 to 1020nm disk-averaged Earth reflectance spectra obtained from Moon's Earthshine observations with the EMMI spectrograph on the NTT at ESO La Silla (Chile). The spectral signatures of Earth atmosphere and ground vegetation are observed. A vegetation red-edge of up to 9% is observed on Europe and Africa and ~2% upon Pacific Ocean. The spectra also show that Earth is a blue planet when Rayleigh scattering dominates, or totally white when the cloud cover is large. \\ ( http://arXiv.org/abs/astro-ph/0510611 , 289kb) -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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