Photochemical modelling of atmospheric oxygen levels confirms two stable states

Gregory Bethan S.; Claire Mark W.; Rugheimer Sarah

首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Photochemical modelling of atmospheric oxygen levels confirms two stable states

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Photochemical modelling of atmospheric oxygen levels confirms two stable states

机译：大气氧气水平的光化学建模证实了两个稳定状态

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Various proxies and numerical models have been used to constrain O-2 levels over geological time, but considerable uncertainty remains. Previous investigations using 1-D photochemical models have predicted how O-3 concentrations vary with assumed ground-level O-2 concentrations, and indicate how the ozone layer might have developed over Earth history. These classic models have utilised the numerical simplification of fixed mixing ratio boundary conditions. Critically, this modelling assumption requires verification that predicted fluxes of biogenic and volcanic gases are realistic, but also that the resulting steady states are in fact stable equilibrium solutions against trivial changes in flux.

机译：而且，在不同的时间段内，各种地质模型仍然被用来限制O-2的不确定性。以前使用一维光化学模型进行的研究预测了O-3浓度如何随假定的地面O-2浓度而变化，并指出了臭氧层在地球历史上可能是如何发展的。这些经典模型利用了固定混合比边界条件的数值简化。关键的是，这种建模假设需要验证预测的生物和火山气体通量是现实的，但也需要验证由此产生的稳态实际上是稳定的平衡解，而不是流量的微小变化。

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来源
《Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System》 |2021年第1期|共12页
作者
Gregory Bethan S.; Claire Mark W.; Rugheimer Sarah;
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作者单位

Univ St Andrews Sch Earth &

Environm Sci St Andrews KY16 9AL Fife Scotland;

Univ St Andrews Sch Earth &

Environm Sci St Andrews KY16 9AL Fife Scotland;

Univ Oxford Dept Phys Oxford OX1 3PU England;

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原文格式 PDF
正文语种 eng
中图分类天文学、地球科学;行星、卫星、彗星、流星、陨星;
关键词
1-D photochemical modelling; atmospheric evolution; oxygen; ozone; methane; Proterozoic;

机译：一维光化学模拟;大气演变;氧气臭氧甲烷元古界;

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3. A Dynamical model of the atmospheric turbulence from the unstable stratification to the stable stratification [J] . ShidaLIU, ZuguangZheng, 等非线性科学与数值模拟通讯：英文版 . 1996,第001期
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机译：通过光化学产生活性氧来诱导肝细胞培养物中的苯并[a] py单加氧酶。单线态氧参与并形成稳定的诱导中间体的证据。
12. Atmospheric Photochemical Modeling of Turbine Engine Fuels and Exhausts. Phase 2. Computer Model Development. Volume 2 [R] . Carter, W. O., Winer, A. M., Atkinson, R., 1988

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Photochemical modelling of atmospheric oxygen levels confirms two stable states

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