Reconstructing Holocene climatic oscillations in the Indian monsoon system using cores from Himalayan (Manasbal, Tso Moiri) and central Indian (Lonar) lakes

印度次大陆的降水来自两个地区：西风带和季风。除了提供降水，这两个风场以复杂的方式相互作用，改变了湿度可获得性和极端事件的地理模式。出于这个原因，印度没有一个单一的站点可以被认为代表过去的气候变化--相反，来自气候敏感地区(喜马拉雅和印度中部)的一组站点的数据需要结合起来，以获得本项目计划的“综合古季风曲线”。我们的目标是利用各种沉积学、地球化学和孢粉学工具，从古湖沉积物中重建全新世侵蚀、沉积、古生产力和植被模式的变化。这些数据将与气候变异性、水分来源和集水区动态联系在一起。对现代样品的调查、现代监测和花粉-气候传递函数将有助于量化全新世降水变化，识别极端气候事件及其对植被的影响。在本项目的第一年，我们的目标是在选定的时间切片上以更高的分辨率调查三个湖泊(Lonar、Manasbal和Tso Moriri)的全新世气候变异性。基于我们的数据，我们将在这些湖泊中扩大记录(长度和分辨率)，并在第二阶段将我们的覆盖范围扩大到东印度洋湖泊。在Z项目中，正在通过提高和调查短岩心来调查东印度洋湖泊的气候敏感性。

The Indian subcontinent receives precipitation from two regimes: the westerlies and the monsoon. Aside from providing the precipitation, the two wind regimes interact in complex manners to alter the geographical patterns of moisture availability, and extreme events. For this reason no single site in India can be considered to be representative of past climate variability – rather data from a suite of sites from climatically sensitive regions (Himalaya and central India) needs to be combined to obtain a “composite palaeomonsoon curve”, as is planned in this project. We aim to reconstruct changes in the Holocene erosional, sedimentation, palaeoproductivity, and vegetation patterns from palaeolake sediments using a variety of sedimentological, geochemical and palynological tools. This data will be linked to climate variability, moisture sources, and catchment area dynamics. Investigation on modern samples, modern monitoring and pollen-climate transfer functions will help in the quantification of Holocene precipitation changes, and identification of extreme climate events and their impact on the vegetation.In the first years of this project we aim to investigate the Holocene climate variability in three lakes (Lonar, Manasbal and Tso Moriri) in decadal scale with higher resolution in selected time slices. Based on our data, we will extend the record in these lakes (length and resolution) and extend our coverage to the East Indian lakes in the second phase. The climate sensitivity of the East Indian lakes is being investigated in the Z project by raising and investigating short cores.