Biology
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p11a1317w&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #P11A-1317
Biology
[0343] Atmospheric Composition And Structure / Planetary Atmospheres, [3344] Atmospheric Processes / Paleoclimatology, [5210] Planetary Sciences: Astrobiology / Planetary Atmospheres, Clouds, And Hazes, [5225] Planetary Sciences: Astrobiology / Early Environment Of Earth
Scientific paper
The Archean Earth (3.8 to 2.5 billion years ago) was probably enshrouded by a Titan-like photochemical haze composed of fractal aggregate hydrocarbon aerosols. In this study a three-dimensional fractal aggregate model of the early Earth photochemical haze is explored and compared with the standard liquid drop haze model used in earlier studies. Fractal aggregate microphysical processes are modeled using the method introduced by Cabane et al. [Planet. Space Sci. 41, 257, 1993]. The optical properties of the aerosols are determined using a mean-field approximation of multiple scattering by fractal aggregates composed of identical spheres [Botet at al.
Toon Brian O.
Wolf E. T.
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