Northeast Asian Climatic Variability Over the Last 300,000 Years

过去30万年东北亚气候变化

• 批准号: 8713216
• 负责人: Margaret Leinen
• 金额: $ 5.99万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-12-01 至 1990-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8713216&HistoricalAwards=false
• 关键词: Northeast; Asian; Climatic; Variability; Over

Geologic evidence and general circulation model experiments show that the monsoon climates respond very strongly to insolation changes induced by orbital variations. Pleoclimate data from northeast Asia and northwest Pacific Ocean suggest that these terrestrial and marine environments, influenced by northeast Asian monsoon, respond to global climate changes in a complex way that varies temporally and geographically. Using high resolution terrestrial, marine, and atmospheric climatic information generated from analyses of pollen, radiolaria, oxygen isotopes, and mineralogy of sediments from marine cores, the regional response to late Pleistocene climate variations will be examnined. The changes in the intensity and duration of the northeast Asian monsoon through two complete glaciation to deglaciation cycles will be determined. This work is important because it will enable construction of an empirically based conceptual model of northeast Asian monsoon; an independent model to compare with simulations based on numerical general circulation models.

地质证据和大气环流模型实验 表明季风气候对 由轨道变化引起的日射变化。 多气候 来自东北亚和西北太平洋的数据表明， 这些陆地和海洋环境， 东北亚季风对全球气候变化的响应 复杂的方式，随时间和地理位置而变化。 使用 高分辨率陆地、海洋和大气气候 从花粉、放射虫、氧气的分析中产生的信息 同位素和海洋岩心沉积物的矿物学， 对晚更新世气候变化的区域响应将是 检查。 地震强度和持续时间的变化 东北亚季风通过两次完整的冰期， 将确定冰川消退周期。 这项工作很重要 因为它将能够构建一个基于经验的 东北亚季风概念模式;一个独立模式 与基于数值模拟的一般 流通模式