Precipitation variability in the Greater Yellowstone Region as inferred from 1000+ year tree-ring records

根据 1000 年树木年轮记录推断大黄石地区的降水变化

• 批准号: 0082376
• 负责人: Lisa Graumlich
• 金额: $ 23.82万
• 依托单位: Montana State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-15 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0082376&HistoricalAwards=false
• 关键词: Precipitation; variability; Greater; Yellowstone; Region

This award is for a study that will contribute to our understanding of the nature of persistent precipitation fluctuations by investigating the linkages between newly discovered long (1000+ years) tree-ring records from the Greater Yellowstone Region (GYR) and atmospheric circulation and sea surface temperature anomaly patterns in the Pacific Basin. Specifically, the project will address three questions: 1) what are long-term patterns of temporal and spatial variability of precipitation in the Greater Yellowstone region?; 2) how are multi-decadal patterns linked to indices of ocean-atmosphere interactions such as the Pacific Decadal Oscillation?; and 3) what do long-term records of precipitation imply about the frequency and duration of droughts in the GYR? These questions will be addressed through the development of tree-ring based reconstructions of winter precipitation for the past 1000+ years based on a multi-species network of sites in the GYR.

该奖项是针对一项研究，该研究将通过研究大黄石地区（GYR）（GYR）新发现的长期（1000多年）的树环记录与大气循环和海面温度变化的太平洋盆地中新发现的长期（1000多年）树环记录之间的联系，从而有助于我们理解持续的降水波动的性质。具体而言，该项目将解决三个问题：1）大黄石地区降水的时间和空间变化的长期模式是什么？ 2）多年模式如何与海洋 - 大气相互作用的指标（例如太平洋十年际振荡）相关联？ 3）降水的长期记录暗示了GYR中干旱的频率和持续时间？这些问题将通过基于GYR中的多种物种网络在过去1000多年中开发基于树环的冬季降水重建。