Derivation and Analysis of Climatic Information From Tree Rings

Jacoby, Gordon C. Cook, Edward R. D'Arrigo, Rosanne D.哥伦比亚大学，Lamont-Doherty地球观测站题目：从树木年轮中推导和分析气候信息该奖项支持Lamont-Doherty地球观测站树木年轮实验室（TRL）的树木气候学研究。对古树年轮的分析提供了一种几乎独一无二的工具，用于确定过去气候的季节性和逐年变化，以评估最近的气候变化。大规模重建和当地研究表明，在过去的一个世纪里，异常的变暖，偶尔的气候突变，以及更普遍的极端干湿事件。目前的工作将更新和改善对气候敏感的森林-过渡带地点的覆盖范围，增加对湿度应力变化的采样，并包括亚化石材料，将树木年轮记录延伸到更遥远的过去。这一扩展对于比较目前（可能是人为的）变暖时期与更遥远的过去的自然变暖时期至关重要。

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.