Paleoenvironmental reconstructions from Chilean lake, fjord, and marine sediments and paleoclimate modelling with special emphasis on variations of the westerly wind belt during the Holocene (HoloParc)

智利南部的气候受到南部西风带的强烈影响。因此，它代表了一个关键区域，调查全新世的强度和纬度位置的变化，这个重要的风系统，特别是考虑到西风在全球大气CO2预算的可能作用，最近建议。该项目的主要目标是使用多代理方法的基础上沉积学和新的有机代理重建multdecadal-to-millennial-scale的温度，植被和湿度在智利南部全新世的变化。这些替代结果将与瞬态全新世气候模式模拟相结合，以阐明潜在的强迫机制。将调查包括西风中心的湖泊、峡湾和开阔海洋档案，其优势不仅在于建立这些不同环境之间的联系，而且还在于在强气候梯度区域覆盖宽纬度范围（33°S-53°S）的高分辨率古环境档案。将使用综合性全球共同体气候系统模型3.0版进行模型实验。

The climate of southern Chile is strongly influenced by the southern westerly wind belt. It therefore represents a key region to investigate Holocene changes in the intensity and latitudinal position of this important wind system, especially considering a possible role of the westerly winds in the global atmospheric CO2 budget as recently suggested. The main objective of this project is to use a multi-proxy approach based on sedimentological and novel organic proxies to reconstruct multidecadal-to-millennial-scale changes in temperature, vegetation, and humidity in southern Chile during the Holocene. These proxy results will be combined with transient Holocene climate model simulations in order to elucidate potential forcing mechanisms. Lake, fjord, and open ocean archives encompassing the center of the westerly winds will be investigated, with the advantage of not only establishing a link between these different environments, but also of covering a wide latitudinal range of high-resolution paleoenvironmental archives (33°S-53°S) in a region of strong climate gradients. Model experiments will be carried out with the comprehensive global Community Climate System Model (CCSM), version 3.0.