Collaborative Research: Millennial-Length Histories of Northeastern Pacific Climate Variability from Bivalve Mollusks and Trees

合作研究：双壳类软体动物和树木的东北太平洋气候变化的千年历史

• 批准号: 2303468
• 负责人: Diana Thatcher
• 金额: $ 14.5万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-07-01 至 2026-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2303468&HistoricalAwards=false
• 关键词: Collaborative; Research; Millennial; Length; Histories

The general goal of this project is to produce a continuous, annually resolved, and millennial-length marine climate history of the northeast Pacific Ocean region using a combination of data from paleoclimate proxies involving growth increments of the marine bivalve Pacific geoduck (Panopea generosa), tree-ring chronologies, and tropical coral growth-increment records.Climate variability in the region plays a fundamental role in the socioeconomic and environmental dynamics of western North America with clearly established implications for fisheries production, forest growth, wildfire, drought, and snowpack. Over the past decade, the region has experienced repeated and extreme heatwaves that profoundly impacted marine ecosystems and adjacent terrestrial systems. Yet, considerable uncertainty exists as to northeastern Pacific climate variability prior to the 1900s and the extent to which current climate is atypical.Foremost, this research aims to reconstruct northeast Pacific Ocean sea-surface temperatures as a significant forcing mechanism of climate and climate variability in Earth’s climate system but which is relatively poorly constrained by instrumental observations, paleoclimate data, and general climate circulation models. This project seeks to address lingering questions regarding poor agreement among earlier tree-ring reconstructions and the possibility of time variant linkages across marine and terrestrial systems. Moreover, long-term relationships between the extratropical and tropical Pacific region will be assessed by integrating coral records and existing reconstructions of the El Niño Southern Oscillation. Northeastern Pacific paleoclimate reconstructions may yield unique benchmarks for comparison among paleoclimate records, modern observations, and model datasets of hemispheric climate from interannual to centennial timescales. The potential Broader Impacts (B.I.) include development of a potential high-impact climate proxy, support for a doctoral student, development of a dendrochronology course-based undergraduate research experiences (CURE) for undergraduate students, installation of exhibits into the lobbies of the tree-ring-research dept and in Biosphere2, training of docents, and building a Youtube channel of videos regarding quantitative paleoclimate techniques.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目的一般目标是使用来自古气候代理的数据组合，涉及海洋双壳太平洋杂物（Panopea Generosa）的增长增长，每年生产东北太平洋地区的连续，千禧年长的海洋气候历史（树环的年代和热带珊瑚生长因素的变化在美国的野火，野火，drou和雪堆中扮演着明显的渔业生产的Westh America的基本角色和环境动态。深刻影响海洋生态系统和邻近系统的极端热浪，但对于1900年代之前的北方气候变异性而言，北部的气候变化很大，而Torima te的程度是非典型的。地球系统中的气候机制是由工具观测和一般气候模型限制的通过将ElNiñoSouthern振荡的现有重建融合到珊瑚和热带太平洋地区之间的长期关系。开发潜在的高影响力气候代理，对博士生的支持，培养本科研究生研究经验（CURE），将展览安装到树木环境研究部和生物圈2，培训培训和建立YouTube频道中该奖项反映了NSF'SF'Stutionory Mission，并通过基金会的知识分子和更广泛的影响评估标准通过评估来反映NSF'SF'STUTUTORY MISSION。