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.

该奖项是一项研究，将有助于我们了解持续降水波动的性质，通过调查新发现的长（1000年以上）树木年轮记录从大黄石地区（GYR）和大气环流和海洋表面温度异常模式之间的联系在太平洋盆地。具体来说，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)多年代际模式与海洋-大气相互作用指数（如太平洋年代际振荡）之间有何联系？3）长期降水记录对GYR干旱的频率和持续时间意味着什么？这些问题将通过发展基于年轮的重建冬季降水在过去1000多年的基础上，在GYR网站的多物种网络。