CAREER: Using Tracer Interrelationships to Understand Large-Scale Geophysical Flows and their Changes
职业:使用示踪剂相互关系来了解大规模地球物理流及其变化
基本信息
- 批准号:2239242
- 负责人:
- 金额:$ 89.74万
- 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:2023-03-15 至 2028-02-29
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
This project will explore a new method to understand the history of the large-scale patterns of winds in the stratosphere and currents in the ocean. These winds and currents are important components of the global climate, affecting radiation in the stratosphere, the recovery of the ozone layer, and the storage of heat and carbon in the deep ocean. A tracer is a substance that has a small concentration and follows the flow of a fluid. Wildfire smoke can be a tracer; smoke from fires in the Western United States follows the jet stream, bringing air pollution all the way to the east coast in a large plume that can be seen from space. Carbon dioxide is a trace gas that has no appreciable chemical losses, so it can be used to examine the properties of the winds or currents that are transporting it. The relationships between different tracers have long been used to qualitatively describe winds and currents; for example, measurements of very high salt content and high temperature in the ocean demonstrate that the water started at the surface in the Mediterranean, even if the measurement is taken in the middle of the Atlantic. Just high temperature or high salt content would not lead to the same conclusion. This project involves developing and applying theory to use relationships between different tracers quantitatively to examine trends in the global patterns of winds in the stratosphere and currents in the ocean. Measurements of different tracers go back well over a century in the ocean and nearly 70 years in the stratosphere, and so the ability to use relationships between them to understand the winds and currents potentially unlocks a vast quantity of data to be analyzed in a new way that provides information about the history of global-scale winds and currents. This work will provide new insights into how these winds and currents affect radiation and climate by examining the storage of carbon in the deep ocean and the chemicals that set the rate of the recovery of the ozone layer. Three graduate students will be trained as part of this project. Tracers are one of the best ways to visualize the flow and are therefore excellent for learning about fluid motion. The PI will develop curricula that bring fluid experiments to a range of college-level classes with an inexpensive apparatus made of Lego components and a kitchen turntable. In addition, stratospheric science teaching materials, including a textbook and programming activities, will be developed and made available as part of these efforts.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.
该项目将探索一种新方法,以了解平流层大规模风和洋流模式的历史。这些风和洋流是全球气候的重要组成部分,影响着平流层的辐射、臭氧层的恢复以及深海中热量和碳的储存。示踪剂是一种浓度很小并跟随流体流动的物质。野火烟雾可以作为示踪剂;美国西部火灾产生的烟雾跟随急流,将空气污染一路带到东海岸,形成一个从太空中可以看到的大烟柱。二氧化碳是一种痕量气体,没有明显的化学损失,因此可以用来检查输送它的风或海流的性质。例如,对海洋中非常高的含盐量和高温的测量表明,地中海的水是从表面开始的,即使测量是在大西洋中部进行的。仅仅高温或高盐含量不会导致同样的结论。该项目涉及开发和应用理论,以定量地使用不同示踪剂之间的关系来研究平流层风和洋流的全球模式趋势。对不同示踪剂的测量可以追溯到海洋中的世纪和平流层中的近70年,因此,利用它们之间的关系来了解风和海流的能力可能会释放大量的数据,以一种新的方式进行分析,提供有关全球尺度风和海流历史的信息。这项工作将通过研究深海中碳的储存和决定臭氧层恢复速度的化学物质,为这些风和洋流如何影响辐射和气候提供新的见解。作为该项目的一部分,将培训三名研究生。示踪剂是可视化流动的最佳方法之一,因此非常适合学习流体运动。PI将开发课程,将流体实验带到一系列大学水平的课程中,使用由乐高组件和厨房转盘制成的廉价设备。此外,平流层科学教材,包括教科书和编程活动,将开发和提供作为这些努力的一部分,这个奖项反映了NSF的法定使命,并已被认为是值得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的支持。
项目成果
期刊论文数量(0)
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Marianna Linz其他文献
Lagrangian Coherent Structures to Examine Mixing in the Stratosphere
用于检查平流层混合的拉格朗日相干结构
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
J. Curbelo;Marianna Linz - 通讯作者:
Marianna Linz
Seasonal and geographic viability of high altitude balloon navigation
- DOI:
10.1038/s41598-024-71445-9 - 发表时间:
2024-09-19 - 期刊:
- 影响因子:3.900
- 作者:
David Brown;Marianna Linz;Jared Leidich - 通讯作者:
Jared Leidich
Marianna Linz的其他文献
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