Collaborative Research: P2C2--Paleoclimate Reanalysis: A New View of Past Climates

这一合作项目旨在利用气象界广泛使用的数据同化技术进行古气候再分析--对过去25 000年的气候进行统计上可靠的网格重建，以便将气候模型和代理的信息结合起来，重建网格气候场。重新分析将被用来检验关于热带沃克环流和主要季风系统对气候背景状态变化的响应以及地球气候系统中低频(百年到千年尺度)变率的起源的假设。具体目标是测试关于热带气候系统在寒冷和温暖气候下的行为的假设，并记录和确定百年至千年尺度气候变异性的动力来源。古气候重新分析将可供更广泛的科学界使用，并可能提供一个社区基准，以利于跨多学科的研究。该项目将支持一名研究生和博士后候选人，并以数据收集和分析的形式让本科生大量参与。该项目还支持与女孩力量计划建立新的伙伴关系，为图森市一所公立学校的中学女生提供科学教育和推广机会。

This collaborative project aims to produce a Paleoclimate Reanalysis - a statistically robust gridded reconstruction of climate spanning the last 25,000 years - using a data assimilation technique widely used in the meteorological community in order to combine information from climate models and proxies to reconstruct gridded climate fields. The Reanalysis will be used to test hypotheses regarding the response of the tropical Walker circulation and the major monsoon systems to changing climate background states and the origin of low-frequency (centennial to millennial-scale) variability in the Earth's climate system. The specific goal is to test hypotheses regarding the behavior of the tropical climate system under cold and warm climates and to document and identify the dynamical origin of centennial-to millennial-scale climate variability.The Paleoclimate Reanalysis will be available to the wider science community and could provide a community benchmark to benefit research across multiple disciplines. This project will support a graduate student and postdoctoral candidate as well as involve substantial undergraduate participation in the form of data collection and analysis. This project also support a new partnership with the Girl Power program to develop science education and outreach opportunities for middle school girls in a Tucson public school.