Evolution of Atmospheric Circulation Patterns over Continental Interior Asia during the Past 1.4 Ma from Millennial-Scale Carbonate-Based Proxy Records from Lake Hovsgol, Mongolia

蒙古 Hovsgol 湖千年尺度碳酸盐代理记录过去 1.4 Ma 期间亚洲大陆内陆大气环流模式的演变

• 批准号: 0402351
• 负责人: Alexander Prokopenko
• 金额: --
• 依托单位: University South Carolina Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-06-15 至 2009-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0402351&HistoricalAwards=false
• 关键词: Evolution; Atmospheric; Circulation; Patterns; over

This award supports the development of millennial scale climate records from Lake Hovsgol in Northwest Mongolia. The Lake is located along the present summer pathway of the subpolar jet stream over interior Asia that controls the westerly transport of moisture into the region. The goals of the research are to advance the understanding of large-scale atmospheric circulation patterns in the Northern Hemisphere and document changes in meridional heat gradient during interglacials. Specifically, the researchers will examine a 1.4 million year lacustrine sediment core recovered from the Lake and covering the Mid-Pleistocene Transition. The importance of this Transition is the apparent change in orbital variability from a system dominated by obliquity (40,000-year orbital cycles) to one dominated by eccentricity (100,000-year orbital cycles). This highly interdisciplinary and international research project will help support a Master's level graduate student and support international partnerships among the University of South Carolina, the Siberian Branch of Russian Academy of Sciences, and several research institutions and universities in Japan and South Korea.

该奖项支持蒙古西北部霍夫苏古尔湖千年尺度气候记录的开发。 该湖位于亚洲内陆副极地急流目前夏季的路径上，控制着湿气向西输送到该地区。 该研究的目标是增进对北半球大规模大气环流模式的理解，并记录间冰期期间经向热量梯度的变化。 具体来说，研究人员将检查从湖泊中回收的 140 万年的湖泊沉积物核心，覆盖中更新世过渡期。 这一转变的重要性在于轨道变率的明显变化，从以倾角（40,000 年轨道周期）为主的系统到以偏心率（100,000 年轨道周期）为主的系统。这个高度跨学科和国际化的研究项目将帮助支持硕士水平的研究生，并支持南卡罗来纳大学、俄罗斯科学院西伯利亚分院以及日本和韩国的几家研究机构和大学之间的国际合作伙伴关系。