How is the evolution of stratospheric ozone affected by climate change, and how strong is the feedback? (SHARP-OFC)

该项目的一个主要目标是分析最新的痕量气体观测数据以及最先进的模型（化学气相色谱模型和化学气相色谱模型），以便更好地了解臭氧与气候变化之间的相互作用以及潜在的动力学和化学过程。扩展的卫星、气球和飞机观测与改进的模型计算（CTM和CCM）相结合，用于进一步减少溴收支的不确定性，特别是来自VSLS（寿命极短的物质）的贡献，并进一步阐明碘在平流层中的作用。此外，详细研究观测到的平流层微量气体的长期演变（趋势和变化），重点是从科学仪器检索的O3，NO2和气溶胶的配置文件提出。将使用更新的EMAC CCM模型运行来研究平流层臭氧的未来演变，其中一些模型运行将结合大气-海洋互动反馈。除了气候对未来臭氧的反馈问题外，还将特别强调一氧化二氮和温室气体排放的日益重要的作用。

One major goal of this project is to analyse updated observational trace gas data together with stateof- the art models (CTMs and CCMs) in order to obtain a better understanding of the interaction between ozone and climate change and the underlying dynamical and chemical processes. The extended satellite, balloon and aircraft observations combined with improved model calculations (CTM and CCM) are used to further reduce the uncertainties in the bromine budget, in particular the contribution from VSLS (very short lived substances) and to further elucidate on the role of iodine in the stratosphere. Furthermore detailed studies on the long-term evolution (trends and variability) of observed stratospheric trace gases with foci on profiles of O3, NO2 and aerosols retrieved from SCIAMACHY are proposed. Future evolution of stratospheric ozone will be investigated using updated EMAC CCM model runs, some of them in combination with an interactive atmosphere–ocean feedback. In addition to issues on the climate feedback on future ozone, particular emphasis will be given to the increasing role of N2O and GHG emissions.