Modeling Earth's atmosphere before, during and after the rise in Oxygen

Details Modeling Earth's atmosphere before, during and after the rise in Oxygen Modeling Earth's atmosphere before, during and after the rise in Oxygen

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..469g&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.469

Physics

Scientific paper

O2 concentrations have risen from their pre-biotic abundance of about 10-12 Present Atmospheric Level (PAL) (Karecha et al. 2005) during the Archean era, up to about 1% by about 2.3 Gyrs ago and may have exceeded 15% PAL by about 2.1 Gyrs (Knoll & Holland, 1995). Understanding the nature of this rise is central to shedding light on the development of life on Earth and is also relevant to the search for atmospheric biomarkers (life-indicating species) on Earth-like exoplanets.

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