The Influence of Solar Radiation Perturbations on the Coupling of Atmospheric Layers - SORACAL

臭氧减少的强烈区域差异是由于行星波的大规模输送造成的。因此，在项目的第一和第二阶段，我们诊断了观测到的纬向不对称臭氧及其影响，以便更好地理解相关辐射扰动和动力学之间的联系。这些结果引出了新的重要问题。我们发现，在1960-2000年间，臭氧中的行星波结构几乎呈线性增加，但导致这种增加的过程到目前为止还不清楚。我们计划通过包括线性臭氧输送和线性臭氧动态反馈在内的模型过程研究来澄清这个问题。我们还发现，相关辐射扰动对温度和行星波的长期变化的贡献令人惊讶地强烈。根据最近公布的观测数据(同化、测量)，以及在DFG SPP CAWSES和国际气候模式验证活动中使用的化学气候模式(CCM)的最新数据，扩大这些调查是非常重要的。我们计划诊断行星波结构在臭氧以及其他重要示踪物(平流层气溶胶)中的影响，包括太阳可变性和海洋表面温度可变性的影响。至少，我们的项目将有助于改进气专委未来情景中使用的CCM。

Strong regional differences in ozone reductions are due to large-scale transport by planetary waves. Hence, during 1st and 2nd phase of project, we diagnosed observed zonally asymmetric ozone and its effects in order to improve our understanding of the links between the related radiation perturbations and dynamics. The results lead to new important questions. We found a nearly linear increase of planetary wave one structure in ozone during 1960-2000, but the processes leading to this increase are unknown up to now. We plan to clear up this question by model process studies including linear ozone transport and linear ozone-dynamic feedback. We found also a surprisingly strong contribution of related radiation perturbations to long-term changes in temperature and planetary waves. It is very important to extend these investigations based on recently released observational data (assimilations, measurements), but also based on recent data of Chemistry Climate Models (CCMs) used within the DFG SPP CAWSES and within international CCM validation activity. We plan to diagnose the effects of planetary wave structures in ozone but also in other important tracers (stratospheric aerosol), including effects of solar variability and ocean’s surface temperature variability. At least our project will contribute to the improvement of CCMs used for future IPCC scenarios.