Vegetation, Climate, Man - Holocene Variability in monsoonal Central Asia (HOLOCENE CV)

该项目的主要目的是通过比较目标导向的气候模式模拟与代理衍生的植被和气候重建，了解季风中亚全新世气候、植被和人类社会的关系。重建的气候趋势在质量上与气候模拟结果一致。然而，两种方法都没有显示出明显的大尺度气候变化趋势，而是显示出分区域差异的气候趋势，揭示了季风中亚不同分区域的非同步湿度变化。气候模拟结果表明，在大尺度上植被变化对全新世气候变化的影响较弱，但在区域上植被反馈可能很强。此外，我们还证明了季风亚洲的植被变化对北非和中东的气候有影响，表明存在很强的遥相关。在该项目的下一阶段，我们希望弄清楚，哪些机制决定了亚季风区全新世气候趋势/变率的差异，以及季风中亚地区的气候和植被变化如何受到遥相关的影响。

The primary aim of our project is to understand the relationship of Holocene climate, vegetation and human societies in monsoonal Central Asia by comparing target-oriented climate model simulations with proxy derived vegetation and climate reconstructions. The reconstructed climate trend is qualitatively in good agreement with the climate modelling results. Nevertheless, both methods show no clear large-scale but rather a sub-regionally different climate trend, revealing asynchronous moisture changes in different sub-regions of monsoonal Central Asia. Climate modelling results show on a large scale a weak influence of vegetation changes on Holocene climate change, but regionally the vegetation feedback can be strong. Furthermore, we demonstrated that vegetation changes in monsoonal Asia have an effect on climate in North Africa and the Middle East suggesting strong teleconnections. In the next phase of this project we want to figure out, which mechanisms determine the differences in Holocene climate trend/variability in the sub-monsoon regions and how the climate and vegetation change in monsoonal Central Asia is affected by teleconnections.