The forgotten role of the ground state in atmospheric photochemistry

该项目旨在为当前大气化学模型中的两个缺陷提供新的解决方案。也就是说，分子氢（H2）被低估了高达两倍，而在污染地区，HO 2浓度被低估了高达十倍。该项目将调查这些解决方案，并评估其对当地和全球大气的影响。通过更好地描述大气中H2的收支以及基态反应的作用，大气模型的预测能力将得到提高。例如，这将允许在大气H2浓度的任何变化的结果（可能作为任何未来氢经济的一部分）发生之前对其进行预测。该项目的好处是全球性的：它们使我们能够更好地预测大气成分变化的影响-在它们发生之前，和地方：澳大利亚在物理，理论和大气化学方面的优势得到加强。

This project aims to provide novel solutions to two deficiencies in current atmospheric chemistry models. That is, molecular hydrogen (H2) is underestimated by up to a factor of two, and in polluted areas, HO2 concentrations are underestimated by up to a factor of ten. The project will investigate these solutions and assess their local and global atmospheric impact. By better characterising the atmospheric H2 budget, and the role of ground state reactions in general, the predictive ability of atmospheric models will be improved. This will allow, for example, the outcomes of any change in atmospheric H2 concentration, potentially as part of any future hydrogen economy, to be predicted before they occur. The benefits of this project are global: they allow us to better predict the impact of changes to atmospheric composition – before they occur, and local: Australia’s strengths in physical, theoretical and atmospheric chemistry are reinforced.