Validation of the Strontium-Uranium Thermometer Against Instrumental Records of Ocean Temperature
根据海洋温度仪器记录验证锶-铀温度计
基本信息
- 批准号:1747746
- 负责人:
- 金额:$ 3.32万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2017
- 资助国家:美国
- 起止时间:2017-08-01 至 2018-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Anthropogenic CO2 emissions are changing Earth's climate. Yet climate also varies naturally on timescales of decades to millennia. Characterizing this variability is critical to both quantifying the anthropogenic influence and projecting future change. Sea surface temperature (SST) plays a major role in climate yet the instrumental record is too short to enable a robust evaluation of natural variability. Proxy data generated from coral skeletons have potential to fill these gaps but generation of lengthy records requires use of dead colonies that grew before the instrumental era, for which existing geochemical SST proxies are not well-suited. A new thermometer, Sr-U, has been developed for application to non-living corals but the calibration to SST requires testing. This project seeks to validate Sr-U by reconstructing a record for the central Red Sea and comparing against well-constrained observational SSTs for the region. A successful outcome will benefit the scientific community by opening the global archive of non-living corals for SST reconstructions. Improved SST reconstructions will provide a target for the same numerical models used to predict future oceanographic and climate change.Coral-to-coral geochemical variability is a major obstacle to SST reconstructions from non-living corals and Sr-U is based on a robust understanding of the processes that cause this variability. This project will generate Sr/Ca and U/Ca data for the last 50 years from an existing Porites coral core sampled in the central Red Sea and apply a calibration derived from Atlantic species to reconstruct the SST record. Heavy ship traffic in the region means the pre-satellite observational record is well-constrained. Additionally, Red Sea SSTs over the last 50 years are characterized by decadal variability superimposed on a long-term warming trend, and thus present an ideal test of the ability of Sr-U to capture both variability and trends in an unknown coral. The goal is a proof-of-concept, to demonstrate the universal application of Sr-U as a tool with which to reconstruct accurate SST records using modern and fossil corals alike.
人为二氧化碳排放正在改变地球气候。然而,气候也会在数十年到数千年的时间尺度上自然变化。表征这种变异性对于量化人为影响和预测未来变化至关重要。海面温度(SST)在气候中起着重要作用,但仪器记录太短,无法对自然变化进行可靠的评估。从珊瑚骨骼生成的代理数据有可能填补这些空白,但生成冗长的记录需要使用仪器时代之前生长的死亡珊瑚群,而现有的地球化学海表温度代理不太适合。一种新的温度计 Sr-U 已开发用于非生物珊瑚,但海表温度的校准需要测试。该项目旨在通过重建红海中部的记录并与该地区严格约束的观测海表温度进行比较来验证 Sr-U。成功的成果将开放全球非活珊瑚档案用于海表温度重建,从而使科学界受益。改进的海表温度重建将为用于预测未来海洋和气候变化的相同数值模型提供目标。珊瑚间的地球化学变异性是非生命珊瑚海表温度重建的主要障碍,而 Sr-U 是基于对导致这种变异性的过程的深入了解。该项目将从红海中部采样的现有滨珊瑚核心生成过去 50 年的 Sr/Ca 和 U/Ca 数据,并应用来自大西洋物种的校准来重建海表温度记录。该地区船舶交通繁忙,意味着卫星前观测记录受到很大限制。此外,过去 50 年红海海表温度的特点是十年间的变化叠加在长期变暖趋势上,因此为 Sr-U 捕获未知珊瑚的变化和趋势的能力提供了理想的测试。目标是进行概念验证,以证明 Sr-U 作为一种工具的普遍应用,利用现代珊瑚和化石珊瑚来重建准确的海表温度记录。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Anne Cohen其他文献
Positive Approaches to Promote and Support Changesin Health Behavior
促进和支持健康行为改变的积极方法
- DOI:
- 发表时间:
2020 - 期刊:
- 影响因子:0
- 作者:
E. Lattie;Anne Cohen - 通讯作者:
Anne Cohen
Anne Cohen的其他文献
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{{ truncateString('Anne Cohen', 18)}}的其他基金
NSF Convergence Accelerator Track E: Digital Reefs: A Globally Coordinated, Universally Accessible Digital Twin Network for the Coral Reef Blue Economy
NSF 融合加速器轨道 E:数字珊瑚礁:全球协调、普遍可访问的珊瑚礁蓝色经济数字孪生网络
- 批准号:
2230734 - 财政年份:2022
- 资助金额:
$ 3.32万 - 项目类别:
Cooperative Agreement
NSF Convergence Accelerator Track E: A Globally Coordinated, Universally-Accessible Digital Twin Network for the Coral Reef Blue Economy
NSF 融合加速器轨道 E:全球协调、普遍可访问的珊瑚礁蓝色经济数字孪生网络
- 批准号:
2137882 - 财政年份:2021
- 资助金额:
$ 3.32万 - 项目类别:
Standard Grant
The Biophysics of Coral Reef Resilience: Hydrodynamic and Ecological Drivers of Coral Survival Under Extreme Heat
珊瑚礁恢复力的生物物理学:极热条件下珊瑚生存的水动力和生态驱动因素
- 批准号:
2049567 - 财政年份:2021
- 资助金额:
$ 3.32万 - 项目类别:
Standard Grant
Resolving 20th Century Sea Surface Temperatures in the Central Equatorial Pacific with Laser Sr-U
利用激光 Sr-U 解析 20 世纪中赤道太平洋海面温度
- 批准号:
2016133 - 财政年份:2020
- 资助金额:
$ 3.32万 - 项目类别:
Standard Grant
Temperature and variability of the Atlantic Warm Pool during and since the Little Ice Age
小冰河时期及之后大西洋暖池的温度和变化
- 批准号:
1805618 - 财政年份:2018
- 资助金额:
$ 3.32万 - 项目类别:
Standard Grant
Skeletal Records of Coral Reef Beaching in the Central Equatorial Pacific
赤道中部太平洋珊瑚礁搁浅的骨骼记录
- 批准号:
1737311 - 财政年份:2017
- 资助金额:
$ 3.32万 - 项目类别:
Standard Grant
Can Coral Reefs in the Central Pacific Survive Ocean Warming? A 2015 El Nino Test
中太平洋的珊瑚礁能否在海洋变暖中生存?
- 批准号:
1605365 - 财政年份:2015
- 资助金额:
$ 3.32万 - 项目类别:
Standard Grant
Collaborative Research: Identifying the Role of Basin-scale Climate Variability in the Decline of Atlantic Corals
合作研究:确定盆地规模的气候变化在大西洋珊瑚减少中的作用
- 批准号:
1537338 - 财政年份:2015
- 资助金额:
$ 3.32万 - 项目类别:
Standard Grant
Toward Predicting the Impact of Ocean Acidification on Net Calcification by a Broad Range of Coral Reef Ecosystems: Identifying Patterns and Underlying Causes
预测海洋酸化对广泛珊瑚礁生态系统净钙化的影响:识别模式和根本原因
- 批准号:
1220529 - 财政年份:2012
- 资助金额:
$ 3.32万 - 项目类别:
Standard Grant
Constraining Thermal Thresholds and Projections of Temperature Stress on Pacific Coral Reefs Over the 21st Century: Method Refinement and Application
21 世纪太平洋珊瑚礁温度应力的约束热阈值和预测:方法改进和应用
- 批准号:
1031971 - 财政年份:2010
- 资助金额:
$ 3.32万 - 项目类别:
Standard Grant
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