Collaborative Research: Spatio-temporal changes in Red Sea surface hydrology and controls on deep ocean circulation since the 1700s
合作研究:1700年代以来红海表面水文学的时空变化及其对深海环流的控制
基本信息
- 批准号:2303246
- 负责人:
- 金额:$ 13.79万
- 依托单位:
- 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:
- 关键词:
项目摘要
Understanding the variability and long-term trends in hydrography of the Indian Ocean and connected seas (e.g., Red Sea) has implications for predicting the impacts of changes in climate across the region. Red Sea ocean circulation is vital for Indian Ocean circulation and ecosystems. This circulation supplies oxygen to critical marine ecosystems within the Arabian Sea. Evaporation within the Red Sea also plays a fundamental role in the regional hydrologic cycle and freshwater balance. These are critical for the largely agrarian societies in the region. Yet, little is known about how Red Sea ocean circulation varies across years and decades in response to changes in climate. This project will generate four records of past climate and ocean changes using corals from across the eastern edge of the Red Sea. Chemical analyses of the cores will be compared with existing instrumental data to generate records of temperature, salinity and density that extend back 200-400 years. These climate and ocean records will provide insight into how Red Sea circulation patterns change across space and time in response to climate systems. This project will support two early career female scientists. The project will also support the next generation of graduate and undergraduate scientists. These students will receive mentoring and training in marine geochemistry and paleoclimate research. In addition, the PIs will participate in art-science outreach initiatives such as Synergy II. This includes exhibitions to showcase the potential for combining geochemistry and paleoclimate to understand past variability and future threats to vulnerable societies. This project will reconstruct Red Sea surface hydrography using comparisons of multi-century coral proxy records to examine the role of spatio-temporal climate variability in preconditioning the surface ocean for deep water formation. Specifically, the study will use measurements of δ18O and Sr/Ca in coral skeleton to reconstruct seasonal to multi-decadal variability in Red Sea sea surface salinity and temperature over the past 300 years. Links between the precursors for Red Sea deep ventilation in the north and broader surface ocean hydrography will be evaluated using comparisons of coral records spanning 6º of latitude. These records will test the hypothesis that variability in salinity of northward-flowing Red Sea surface currents serves as an indicator for the strength of deep ventilation. Linkages between the spatio-temporal perspective of surface ocean precursors for deep water ventilation and regional atmospheric and climate phenomena (Arctic Oscillation, AO; North Atlantic Oscillation, NAO) will be examined, utilizing observations and instrumental climate indices. These records of Red Sea variability will identify the surface controls of deep ocean circulation and constrain variability during periods of sustained warm/cold climate.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.
了解印度洋及其相连海域(如红海)的水文变化和长期趋势对预测整个地区气候变化的影响具有重要意义。红海海洋环流对印度洋环流和生态系统至关重要。这种循环为阿拉伯海内重要的海洋生态系统提供氧气。红海内的蒸发在区域水文循环和淡水平衡中也起着重要作用。这些对该地区以农业为主的社会至关重要。然而,人们对红海海洋环流如何随着气候变化而在数年和数十年间发生变化知之甚少。该项目将利用红海东部边缘的珊瑚生成四份过去气候和海洋变化的记录。对岩心的化学分析将与现有的仪器数据进行比较,得出200-400年前的温度、盐度和密度记录。这些气候和海洋记录将使我们深入了解红海环流模式是如何随着气候系统的变化而跨时空变化的。该项目将资助两名早期职业女性科学家。该项目还将支持下一代的研究生和本科生科学家。这些学生将接受海洋地球化学和古气候研究方面的指导和培训。此外,学院亦会参与“协同II”等艺术与科学推广计划。这包括展示结合地球化学和古气候的潜力,以了解过去的变化和未来对脆弱社会的威胁。该项目将利用多世纪珊瑚替代记录的比较来重建红海表面水文,以检验时空气候变率在预处理表层海洋以形成深水中的作用。具体而言,该研究将利用珊瑚骨架的δ18O和Sr/Ca测量来重建过去300年来红海海面盐度和温度的季节至多年代际变化。将通过比较跨越6º纬度的珊瑚记录来评估北部红海深层通风前兆与更广泛的表层海洋水文之间的联系。这些记录将检验一种假设,即向北流动的红海表面洋流的盐度变化可以作为深度通风强度的指标。利用观测资料和仪器气候指数,研究深海通风的表层海洋前兆时空视角与区域大气和气候现象(北极涛动、北大西洋涛动、NAO)之间的联系。这些红海变率记录将确定深海环流的表面控制,并在持续暖/冷气候期间限制变率。该奖项反映了美国国家科学基金会的法定使命,并通过使用基金会的知识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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David Gillikin其他文献
David Gillikin的其他文献
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{{ truncateString('David Gillikin', 18)}}的其他基金
Equipment: MRI: Track 1 Acquisition of a Laser Ablation System for ICP-MS to Expand a Broad Range of Analytical Activities and Research Training in the Earth Sciences
设备: MRI:轨道 1 采购用于 ICP-MS 的激光烧蚀系统,以扩大地球科学领域的广泛分析活动和研究培训
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2320703 - 财政年份:2023
- 资助金额:
$ 13.79万 - 项目类别:
Standard Grant
Collaborative Research: The Antarctic Scallop as Key to Paleoenvironments and Sea lce Conditions: Understanding the Modern to Predict the Past
合作研究:南极扇贝是古环境和海洋条件的关键:了解现代以预测过去
- 批准号:
1745080 - 财政年份:2018
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Collaborative Research: P2C2--Bridging the Gap from Northern Iberia to Northwest Africa to Reconstruct Atmospheric Dynamics and Hydroclimate for the Last 2,500 Years
合作研究:P2C2——弥合从伊比利亚北部到非洲西北部的差距,重建过去 2,500 年的大气动力学和水文气候
- 批准号:
1805163 - 财政年份:2018
- 资助金额:
$ 13.79万 - 项目类别:
Standard Grant
MRI: Acquisition of a Stable Isotope Ratio Mass Spectrometer for Interdisciplinary Research and Undergraduate Research Training
MRI:购买稳定同位素比质谱仪用于跨学科研究和本科生研究培训
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1229258 - 财政年份:2012
- 资助金额:
$ 13.79万 - 项目类别:
Standard Grant
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