Collaborative Research: Late Quaternary Climate of Northeast Asia: Temporal and Spatial Variability

摘要ATM-9816317 Mock，Carey University of俄勒冈州题目：东北亚晚第四纪气候：时空变化 该奖项支持一个项目，旨在通过记录东北亚过去18，000年放射性碳年气候的时空变化，描述千年和百年尺度的机制来解释观测到的古气候变化，并将东北亚的结果与其他地区（例如， 亚洲东南部、北美洲西北部、北大西洋），以便对区域气候系统的相互关系有一个更全面的认识。 总体研究目标将通过以下方式实现：1）通过收集和分析保存在湖泊沉积物中的现代和古代植物学、地球化学和硅藻数据，重建过去的气候; 2）使用改进的放射性碳技术开发高质量的年表; 3）检查现代天气气候模式和大气环流模式模拟，确定气候变化的可能原因; 4）比较基于代用指标和基于模式的古气候解释，以评估观测到的气候历史背后最可能的机制; 5）探索与米兰科维奇和次米兰科维奇尺度事件相关的可能的半球尺度联系。

Abstract ATM-9816317 Mock, Carey University of Oregon Title: Late Quaternary Climate of Northeast Asia: Temporal and Spatial Variability This award supports a project designed to improve the understanding of late Quaternary climatic systems of the subarctic by documenting spatial and temporal variations in climates of the last 18,000 radiocarbon years for NE Asia, describing millennial and centennial scale mechanisms that can account for the observed paleoclimatic changes, and comparing results from NE Asia to other regions (e.g., SE Asia, NW North America, North Atlantic) to obtain a more holistic view of the inter-relationships of regional climatic systems. Overall research goals will be accomplished by: 1) reconstructing past climates through the collection and analysis of modern and ancient botanical, geochemical, and diatom data preserved in lake sediments; 2) developing high quality chronologies using improved radiocarbon techniques; 3) examining modern synoptic climatic patterns and general circulation model simulations identify possible causes of climatic change; 4) comparing the proxy- and model-based paleoclimatic interpretations to assess the most likely mechanisms behind the observed climatic histories; and 5) exploring possible hemispheric scale linkages associated with Milankovitch and sub-Milankovitch scale event.