Derivation and Analysis of Climatic Information From Tree Rings

树木年轮气候信息的推导与分析

• 批准号: 9406732
• 负责人: Gordon Jacoby
• 金额: $ 82.98万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-07-15 至 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9406732&HistoricalAwards=false
• 关键词: Derivation; Analysis; Climatic; Information; Tree

Abstract ATM-9406732 Jacoby, Gordon C. Cook, Edward R. D'Arrigo, Rosanne D. Columbia University, Lamont-Doherty Earth Observatory Title: Derivation and Analysis of Climatic Information from Tree Rings This award supports dendroclimatic research at the Tree-Ring Laboratory (TRL) at the Lamont-Doherty Earth Observatory. Analysis of growth rings of old-aged trees provides an almost unique tool for determining seasonal and year-by-year variations of past climate to evaluate recent climatic changes. Large-scale reconstructions and local studies show unusual warming in the past century, occasional abrupt climatic changes, and more prevalent extremes in dry and wet events. The current effort will update and improve the coverage of climatically-sensitive forest-ecotone sites with the addition of sampling for moisture stress variations and inclusion of subfossil material to extend the tree-ring record farther into the past. This extension is crucial for comparison of the present, possibly anthropogenic, warmer period to natural warmer periods of the more distant past.

摘要 ATM-9406732 Jacoby、Gordon C. Cook、Edward R. D'Arrigo、Rosanne D. 哥伦比亚大学、Lamont-Doherty 地球观测站 标题：树木年轮气候信息的推导和分析 该奖项支持 Lamont-Doherty 地球观测站树轮实验室 (TRL) 的树木气候研究。 对老树年轮的分析提供了一种几乎独特的工具，可以确定过去气候的季节和逐年变化，以评估最近的气候变化。 大规模重建和当地研究表明，过去一个世纪出现了不寻常的变暖，偶尔出现突然的气候变化，以及更普遍的极端干旱和潮湿事件。 目前的工作将更新和改善对气候敏感的森林交错带地点的覆盖范围，增加水分胁迫变化的采样和纳入亚化石材料，以将树木年轮记录延伸到更远的过去。 这种延伸对于将当前（可能是人为的）变暖时期与更遥远的过去的自然变暖时期进行比较至关重要。