New and Improved Tree-Ring Records of Climate from Siberia

新的和改进的西伯利亚气候树木年轮记录

• 批准号: 0308525
• 负责人: Malcolm Hughes
• 金额: $ 3.72万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-06-01 至 2005-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0308525&HistoricalAwards=false
• 关键词: New; Improved; Tree; Ring; Records

This award will help produce two tree-ring records of climate from high-latitude sites in Siberia covering the last 2,000+ years. Field work will be undertaken to collect several hundred samples of live wood (by increment corer and cut cross sections) and relict material (by cut cross sections) from each locality. Ring width measurements, X-ray microdensitometry and chronology building will be performed on both records. Samples will be archived to allow for future laboratory analyses such as cell dimension and isotopic analyses.High resolution 2,000 year records of climate have the potential for improving our understanding of global and Northern Hemisphere temperatures variability over recent millennia and whether the warmth of the late 20th century was unusual.

该奖项将有助于产生两份来自西伯利亚高纬度地区的气候年轮记录，涵盖过去2000多年。将进行实地工作，从每个地点收集几百个活木样本（按覆盖面积和切割截面）和废弃材料样本（按切割截面）。环宽测量，x射线微密度测量和年表的建立将在这两个记录上进行。样品将存档，以便将来的实验室分析，如细胞尺寸和同位素分析。高分辨率的2000年气候记录有可能提高我们对近千年来全球和北半球温度变化的理解，以及对20世纪末的变暖是否异常的理解。