Project on Solar Effects on Chemistry and Climate Including Ocean Interactions (ProSECCO)

ProSECCO III的目的是利用最先进的气候模型系统和观测进行模拟，研究太阳活动变化对地球的影响。该项目将处理从高层大气到海洋的耦合过程的各个方面。与前两个阶段（ProSECCO I和II）一样，该项目分为两个部分，分别研究太阳变率对十年时间尺度（A部分）和百年至千年时间尺度（B部分）的影响。在A部分，我们将研究三个当前的研究课题：a）十年太阳变化对平流层的影响，特别是平流层臭氧和温度中的太阳信号，以及准两年振荡（GBO）的作用，B）对流层和气候对十年太阳强迫的响应，以及c）大气-海洋相互作用对十年太阳和气候变化的作用。我们将使用最先进的化学气候模型（CCM）MA-ECHAM 5/MESSy进行模拟和分析。ProSECCO III的新方面将侧重于大气-海洋耦合过程和实施新开发的海洋-大气CCM。在部分B中，将使用大气-海洋模式EGMAM研究太阳变率对工业化前不同时期气候的影响，重点关注从蒙德极小期到今天和全新世的时期。

The objective of ProSECCO III is to study the impact of variations in solar activity on Earth in simulations with state-of-the-art climate model systems and observations. The project will address aspects of coupling processes from the upper atmosphere to the oceans. Like in the two preceeding phases (ProSECCO I and ll) the project is split into two parts investigating the impact of solar variability on the decadal time-scale (Part A) and on the centennial to millennial time-scale (Part B). In Part A, we will study three current research topics: a) the impact of decadal solar variability on the stratosphere, specifically the solar signal in stratospheric ozone and temperature, and the role of the Quasi-Biennal Oscillation (GBO), b) the tropospheric and climate response to the decadal solar forcing, and c) the role of atmosphere-ocean interactions for decadal solar and climate variability. We will perform and analyze simulations with the state-of-the-art chemistry-climate-model (CCM) MA-ECHAM5/MESSy. The new aspect of ProSECCO III will be the focus on atmosphere-ocean coupling processes and the implementation of a newly developed ocean-atmosphere CCM. In Part B, effects of solar variability on climate of different pre-industrial periods will be studied with the atmosphere-ocean model EGMAM, focussing on the period from the Maunder Minimum until today and the Holocene.