The Influence of Atmosphere-Biology-Geologyduring the Great Oxidation Event

大氧化事件（GOE）标志着地球历史上分子氧（O2）的急剧增加。GOE使大范围的宜居性成为可能，并使复杂的生命占据了地球。然而，许多问题仍然悬而未决。是什么驱使氧气涌入大气，事件发生的时间和范围——都还没有确定下来。大气-生物-地质系统之间微妙的相互作用现在才刚刚开始被发现。由此导致的甲烷菌的灭绝和所谓的雪球地球状态的螺旋式上升说明了GOE的惊人极限。我们研究的一个中心问题是，由于提出的氧双稳定性，GOE是线性发生还是跳跃式发生（所谓的溜溜球模型），并检查碳循环和大气气候对GOE的性质和时间的影响。我们还运用我们结合一维和三维建模专业知识的经验来研究GOE期间大气气候不确定性的作用。为了实现这一目标，我们开发并应用了我们独特的大气模型，其中包含来自大气、生物圈和地圈的详细氧循环成分（例如埋藏、风化、光化学）。一个中心目标是研究受最近地质数据显著进展（如地表压力、大气温室气体等）限制的情景，以研究驱动GOE的关键过程的相互作用。

The Great Oxidation Event (GOE) marked a spectacular rise of molecular oxygen (O2) in the history of the Earth. The GOE enabled wide-ranging habitability and allowing complex life to take hold of the planet. Many questions however still remain open. What drove oxygen to flood the atmosphere, the timing and the extent of the event - are all not well-established. Subtle interplays within the atmosphere-biology-geology system are only now starting to be identified. The resulting demise in methanogens and the spiral towards a so-called Snowball Earth state illustrate the alarming extremity of the GOE. A central question we investigate is whether the GOE occurred linearly or in jumps (the so-called yo-yo model) due to a proposed oxygen bistability and examine the effect of the carbon cycle and atmospheric climate upon the nature and timing of the GOE. We also apply our experience in combining one- and three-dimensional modelling expertise to investigate the role of uncertainties in atmospheric climate during the GOE. To achieve this we develop and apply our unique atmospheric model with its detailed oxygen cycle components (e.g. burial, weathering, photochemistry) from the atmosphere, biosphere and geosphere. A central goal is to investigate scenarios constrained with recent marked advances in geological data (e.g. for surface pressure, atmospheric greenhouse gases etc.) to investigate the interplay of key processes which drove the GOE.