Collaborative Research: P2C2--Extending Tree-Ring Based Reconstructions of Atlantic Gulf Basin Hydroclimate over the Common Era Using Old-Growth Sinker Wood
合作研究:P2C2——使用古老的沉降木扩展大西洋湾盆地水文气候的树轮重建
基本信息
- 批准号:2202857
- 负责人:
- 金额:$ 40.03万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2022
- 资助国家:美国
- 起止时间:2022-07-15 至 2025-06-30
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
The general goal of the research is to collect old-growth bald cypress and longleaf pine samples from trees that were cut in the late 19th and early 20th century to extend existing bald cypress tree-ring chronologies over the full Common Era.Baldcypress is one of the key tree species for tree-ring based climate reconstruction in the southeastern United States (U.S.), because of its longevity and its distinct sensitivity to spring and summer precipitation variability. Even though it has widespread applications in regional and continental-scale high-resolution paleoclimate research, the full spatiotemporal extent of its dendroclimatic potential is yet to be explored. The lack of remnant old-growth bald cypress stands with long-lived trees, in particular, contributes to the dearth of millennium-length chronologies in the Atlantic Gulf Basin (AGB). In the 19th and 20th century, old-growth forests, including bald cypress and longleaf pine stands, throughout the AGB were excessively exploited for the booming construction industry and few forests survived. During this commercial exploitation period, many logs were lost, stuck in river bends, in transport from the swamp harvest location to the mill sites. A century later, caches of such long-lived ‘sinker wood’ can be found on the bottoms of many AGB rivers and slips, forming the only reliable source of old-growth timber and a unique source for expanding the spatiotemporal reach of AGB dendrochronology.The researchers aim to use the extended chronologies to develop regional and seasonal AGB hydroclimate reconstructions that span the entire Common Era (1CE-present). On the interannual to decadal time scales best captured by bald cypress-based reconstructions, summer AGB hydroclimate variability is primarily influenced by Atlantic Multidecadal Variability (AMV). The resulting AGB hydroclimate reconstruction will build upon existing reconstructions of past AMV in three important ways: (a) temporal extension, (b) spatial extension, and (c) sub-seasonal resolution. Common Era-length reconstructions could improve the understanding of the regional expression of past periods of global-scale climate variability, specifically the Late Antique Little Ice Age (ca. 536-660 CE) and the Roman Climate Optimum (ca. 300 BCE -400 CE). Moreover, AGB reconstructions would provide important anchor points in the subtropics, a region typically underrepresented in terrestrial proxy networks. Furthermore, by developing independent earlywood and latewood width chronologies, the research team plans to reconstruct AGB hydroclimate variability at sub-seasonal resolution, which can help improve the understanding of the dynamical nature of large-scale ocean-atmosphere forcing of climate.The potential Broader Impacts include greater understanding of water resources in the southeastern United States, support for a post-doctoral researcher, a project-based undergraduate research experience course at the University of Arizona aimed at attracting under-represented students to scientific research, and outreach and field trips to the for local schools.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.
这项研究的总体目标是从19世纪末和20世纪初砍伐的树木中收集古老的秃柏和长叶松样本,以将现有的秃柏树轮年表扩展到整个共同时代。秃柏是美国东南部基于树轮的气候重建的关键树种之一。因为它的寿命长,对春季和夏季降水变化特别敏感。尽管它在区域和大陆尺度的高分辨率古气候研究中有着广泛的应用,但其年轮气候潜力的完整时空范围仍有待探索。特别是缺乏残存的古老的秃柏树和长寿的树木,导致大西洋海湾盆地(AGB)缺乏长达千年的年表。在19和20世纪,古老的森林,包括秃柏树和长叶松树林,整个AGB被过度开发,用于蓬勃发展的建筑业,很少有森林幸存下来。在这段商业开采期间,许多原木在从沼泽收获地点运输到工厂地点的过程中丢失,卡在河流弯曲处。一个世纪后,这种长寿的“沉木”的缓存可以在许多AGB河流和滑动的底部找到,形成了唯一可靠的原始木材来源和扩展AGB树木年代学时空范围的独特来源。研究人员的目标是使用扩展的年表来开发跨越整个公元前(1CE至今)的区域和季节性AGB水文气候重建。在最好捕获的秃柏为基础的重建的年际到年代际的时间尺度上,夏季AGB水文气候变率主要受大西洋的年代际变率(AMV)的影响。由此产生的AGB水文气候重建将建立在现有的重建过去的AMV在三个重要的方面:(a)时间延伸,(B)空间延伸,和(c)亚季节分辨率。共同的年代长度重建可以提高对全球尺度气候变率过去时期的区域表达的理解,特别是古代小冰河时代晚期(约2000年)。536-660 CE)和罗马气候最佳(CA。公元前300年-400年)。此外,AGB重建将在亚热带地区提供重要的锚点,该地区通常在陆地代理网络中代表性不足。此外,通过开发独立的早材和晚材宽度年表,研究小组计划以亚季节分辨率重建AGB水文气候变率,这有助于提高对大尺度海洋-大气气候强迫动力学性质的理解。潜在的更广泛影响包括更好地了解美国东南部的水资源,支持博士后研究人员,亚利桑那大学的一个基于项目的本科生研究体验课程,旨在吸引代表性不足的学生参加科学研究,并为当地学校提供外展和实地考察。该奖项反映了NSF的法定使命,并通过使用基金会的智力价值和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(0)
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专利数量(0)
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Bryan Black其他文献
A Witness Tree Analysis of the Effects of Native American Indians on the Pre-European Settlement Forests in East-Central Alabama
- DOI:
10.1023/b:huec.0000015211.98991.9c - 发表时间:
2004-02-01 - 期刊:
- 影响因子:1.700
- 作者:
H. Thomas Foster;Bryan Black;Marc D. Abrams - 通讯作者:
Marc D. Abrams
Atoll Island Formation
环礁岛群
- DOI:
10.23919/oceans52994.2023.10336992 - 发表时间:
2023 - 期刊:
- 影响因子:0
- 作者:
Meg O'Connor;Bryan Black;John Albasini - 通讯作者:
John Albasini
Bryan Black的其他文献
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{{ truncateString('Bryan Black', 18)}}的其他基金
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 - 财政年份:2023
- 资助金额:
$ 40.03万 - 项目类别:
Standard Grant
Collaborative Research: Urban Watershed Evolution - Novel Temporal Perspectives on the Hydrologic Impacts and Positive Unintended Consequences of Failing Municipal Infrastructure
合作研究:城市流域演化——关于水文影响和市政基础设施故障的积极意外后果的新的时间视角
- 批准号:
2055491 - 财政年份:2021
- 资助金额:
$ 40.03万 - 项目类别:
Standard Grant
Collaborative Research: P2C2--Multi-proxy Reconstructions of North Pacific Decadal Variability from Bivalve Mollusks and Trees
合作研究:P2C2——双壳类软体动物和树木北太平洋年代际变化的多代理重建
- 批准号:
1855628 - 财政年份:2018
- 资助金额:
$ 40.03万 - 项目类别:
Standard Grant
Collaborative Research: P2C2--Multi-proxy Reconstructions of North Pacific Decadal Variability from Bivalve Mollusks and Trees
合作研究:P2C2——双壳类软体动物和树木北太平洋年代际变化的多代理重建
- 批准号:
1602828 - 财政年份:2017
- 资助金额:
$ 40.03万 - 项目类别:
Standard Grant
Collaborative Research: Climate Change and Upwelling -- Comparative Analysis of Current & Future Responses of the California and Benguela Ecosystems
合作研究:气候变化与上升流——当前的比较分析
- 批准号:
1434732 - 财政年份:2014
- 资助金额:
$ 40.03万 - 项目类别:
Standard Grant
History and future of coastal upwelling modes and biological responses in the California Current
加州洋流沿海上升流模式和生物反应的历史和未来
- 批准号:
1339251 - 财政年份:2012
- 资助金额:
$ 40.03万 - 项目类别:
Standard Grant
History and future of coastal upwelling modes and biological responses in the California Current
加州洋流沿海上升流模式和生物反应的历史和未来
- 批准号:
1130125 - 财政年份:2011
- 资助金额:
$ 40.03万 - 项目类别:
Standard Grant
Importance of Winter Upwelling to California Current Ecosystem Dynamics
冬季上升流对加州当前生态系统动态的重要性
- 批准号:
0929017 - 财政年份:2009
- 资助金额:
$ 40.03万 - 项目类别:
Standard Grant
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Research on Quantum Field Theory without a Lagrangian Description
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