Collaborative Research: Reconstruction of Drought and Streamflow over the Coterminous US from Tree Rings with Extensions into Mexico and Canada

该奖项旨在支持一项合作研究（亚利桑那大学、科罗拉多大学和哥伦比亚大学，后者由美国国家海洋和大气管理局（NOAA）单独资助），通过(a)改进和扩大现有的北美树木年轮干旱重建网格，(b)考虑新的干旱措施，大大扩大过去基于帕尔默干旱严重指数的干旱重建范围。(c)专门研究通过水库运行和水资源分配来重建和分析与干旱管理有关的测量流量序列的关键属性的技术；(d)研究改进重建和时空干旱变异性分析的新的统计方法。

This award is for support of a collaborative study (University of Arizona, University of Colorado, and Columbia University, the latter funded under a separate award from NOAA) to considerably broaden the scope of past drought reconstructions from tree rings, now based on the Palmer Drought Severity Index, by (a) improving and geographically expanding the existing grid of North American drought reconstructions from tree rings, (b) considering new measures of drought, (c) specifically developing techniques for reconstructing and analyzing key attributes of gaged streamflow series that are relevant for drought management through reservoir operation and water resource allocation, and (d) investigating new statistical methods for improving the reconstructions and the analysis of space-time drought variability.