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: 2303467
• 负责人: Bryan Black
• 金额: $ 63.95万
• 依托单位: University of Arizona
• 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=2303467&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，涉及海洋双壳类太平洋土工类（Panopea Generosa），树木环的生长环境，依赖于海洋双壳类太平洋的生长环境，在西北太平洋地区地区进行连续，每年且千禧年长的海洋气候历史。北美西部的社会经济和环境动态对渔业生产，森林生长，野火，干旱和积雪具有明显的影响。在过去的十年中，该地区经历了重复和极端的热浪，对海洋生态系统和邻近的陆地系统产生了深远的影响。然而，对于1900年代之前的东北太平洋气候变化以及当前气候的多种程度而存在，存在很大的不确定性。最重要的是，这项研究旨在重建东北太平洋海洋海平面温度，作为地球气候系统中气候和气候变化的重要强迫机制，而这种循环范围越来越多，但普遍的循环系统和普遍的循环系统且普遍存在。该项目旨在解决有关早期树环的重建之间一致性不佳的挥之不去的问题，以及海洋和陆地系统之间的时间变异联系的可能性。此外，将通过整合珊瑚记录和厄尔尼诺南部振荡的现有重建来评估热带和热带太平洋地区之间的长期关系。东北太平洋古气候的重建可能会产生独特的基准测试，以比较古气候记录，现代观察结果以及半球气候的模型数据集，从年际到百年纪念时间范围。潜在的更广泛的影响（B.I.）包括开发潜在的高影响力的气候代理，对博士生的支持，开发基于年鉴课程的本科生研究经验（CURE），以安装展览，以安装展览中的展览，以培训生物圈和培训的toeper topers of toepers of of Biopphere2，并建立了您的培训，并建立了您的培训。该奖项反映了NSF的法定任务，并通过使用基金会的智力优点和更广泛的影响审查标准进行评估，被认为值得支持。