Dynamics of the Great Oxidation Event from a 3D photochemical-climate model
arXiv:2212.01389 · doi:10.5194/cp-18-2421-2022
Abstract
From the Archean toward the Proterozoic, the Earth's atmosphere underwent a major shift from anoxic to oxic conditions, around 2.4 to 2.1 Gyr, known as the Great Oxidation Event (GOE). This rapid transition may be related to an atmospheric instability caused by the formation of the ozone layer. Previous works were all based on 1D photochemical models. Here, we revisit the GOE with a 3D photochemical-climate model to investigate the possible impact of the atmospheric circulation and the coupling between the climate and the dynamics of the oxidation. We show that the diurnal, seasonal and transport variations do not bring significant changes compared to 1D models. Nevertheless, we highlight a temperature dependence for atmospheric photochemical losses. A cooling during the late Archean could then have favored the triggering of the oxygenation. In addition, we show that the Huronian glaciations, which took place during the GOE, could have introduced a fluctuation in the evolution of the oxygen level. Finally, we show that the oxygen overshoot which is expected to have occurred just after the GOE, was likely accompanied by a methane overshoot. Such high methane concentrations could have had climatic consequences and could have played a role in the dynamics of the Huronian glaciations.
References in corpus (16)
- Global modelling of the early Martian climate under a denser CO2 atmosphere: Water cycle and ice evolution
- 3D modelling of the early Martian Climate under a denser CO2 atmosphere: Temperatures and CO2 ice clouds
- The Pale Orange Dot: The Spectrum and Habitability of Hazy Archean Earth
- 3D climate modeling of close-in land planets: Circulation patterns, climate moist bistability and habitability
- Exploring the faint young Sun problem and the possible climates of the Archean Earth with a 3-D GCM
- Impact of Clouds and Hazes on the Simulated JWST Transmission Spectra of Habitable Zone Planets in the TRAPPIST-1 System
- Thermal phase curves of nontransiting terrestrial exoplanets 1. Characterizing atmospheres
- Revised mass-radius relationships for water-rich rocky planets more irradiated than the runaway greenhouse limit
- Habitability of planets on eccentric orbits: the limits of the mean flux approximation
- Is the faint young Sun problem for Earth solved?
- Measurements and semi-empirical calculations of CO2+CH4 and CO2+H2 collision-induced absorption across a wide range of wavelengths and temperatures. Application for the prediction of early Mars surface temperature
- Coevolution of primitive methane cycling ecosystems and early Earth atmosphere and climate
- Analysis of a Precambrian resonance-stabilized day length
- Evolution of Earth-like extrasolar planetary atmospheres: Assessing the atmospheres and biospheres of early Earth analog planets with a coupled atmosphere biogeochemical model
- On the Spin States of Habitable Zone Exoplanets Around M Dwarfs: The Effect of a Near-Resonant Companion
- Evolution of Earth-like planetary atmospheres around M-dwarf stars: Assessing the atmospheres and biospheres with a coupled atmosphere biogeochemical model