Derivation and Analysis of Climatic Information From Tree Rings

摘要ATM-9406732，戈登C。 爱德华·库克 Rosanne D. D'Arrigo 哥伦比亚大学，拉蒙特-多尔蒂地球观测站，题目：树木年轮气候信息的推导和分析 该奖项支持拉蒙特-多尔蒂地球观测站树木年轮实验室（TRL）的树木气候研究。 分析古树年轮为确定过去气候的季节和逐年变化以评估近期气候变化提供了一种几乎独特的工具。 大规模的重建和当地的研究表明，在过去的世纪不寻常的变暖，偶尔突然的气候变化，更普遍的极端干旱和潮湿的事件。 目前的努力将更新和改善气候敏感的森林交错带地点的覆盖面，增加水分压力变化的采样，并列入亚化石材料，以延长树木年轮记录更远的过去。 这种延伸对于比较目前可能是人为的温暖时期与更遥远的过去的自然温暖时期至关重要。

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.