Discerning Boron to Salinity Ratios in Arctic Marginal Ice Zones - BAMZ
辨别北极边缘冰区的硼与盐度比率 - BAMZ
基本信息
- 批准号:2227313
- 负责人:
- 金额:$ 28.87万
- 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:2023-02-01 至 2025-01-31
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
The Arctic Ocean has an important role in regulating earth’s climate. Though it is only 3% of the total ocean it takes up 10% of the carbon dioxide we add to the atmosphere every year. Though the Arctic has always had a permanent ice cap, it is shrinking in size and by the year 2040 the permanent summer ice cap will be gone. This implies that there will be an increased intensity in the amount of ice that melts each year and there is little known about how the melting ice will alter Arctic surface water chemistry. This study will sample Arctic Sea ice, snow, and brine to map its chemistry profiles in the eastern Arctic with the goal of making better predictions in the future Arctic environment as the Arctic climate changes. The main focus is on the ice profiles of boron and salinity which have a constant ratio in the open ocean, but this ratio may shift in the marginal ice zone at salinities that are less than 30 g/kg and are freshened by melt. This project will also create lessons that show how we use chemistry to do this work and understand climate.This project joins the Atmospheric rivers and the onset of sea ice melt (ARTofMELT) Expedition on the I/B Oden in May June 2023 to conduct sampling in the marginal ice zone (MIZ), including ice cores and brine. The goal is to discern the boron to salinity ratios of these unique systems and their impact on total alkalinity and uptake of atmospheric CO2. The objectives include; 1) to determine the boron to salinity (B/S) ratios in Arctic sea-ice and brine, 2) to determine the carbonate system parameters in Arctic sea-ice and brine, 3) to compare the profiles of all above parameters in annual vs multi-year ice and brine, 4) to evaluate changes in these parameters over the ice-melt process at a given ice station, and 5) to assess the impact on B/S ratios and total alkalinity in adjacent meltwaters of the MIZ. Intellectual Merit: This study contributes to biogeochemical, physical oceanographic, meteorological and climate change research. The results of the B/S ratios will provide important corrections to total alkalinity analyses in polar regions and improve parameterizations in future Arctic CO2 uptake estimates and modeling efforts. Most notably, this study will provide the first ever boron to salinity profiles in annual ice in this region and the first multiyear ice profiles in any region. In addition, ice and brine profiles of other biogeochemically relevant parameters will be generated. It is expected that the results of this study will provide new insights on the future biogeochemistry of the warming Arctic and Arctic CO2 uptake. Broader Impacts: Ten paired videos (from the cruise) and lesson plans will be generated that target high school and undergraduate chemistry students based on chemical concepts used in this research (equilibrium constants, acidity constants, etc.). Following the cruise these will be posted on the project webpage and shared with PBS Learning Media and other educational resource platforms. All lessons will introduce the theme of Arctic ice loss. Researchers will also continue to work with senior illustration students to create Arctic sea ice retreat themed projects (books, posters, short animations) for the broader public. This project will create opportunities for two female graduate students, one of which will have the opportunity for international collaboration in Boron analysis in Korea, and at least four undergraduate students from minority groups through an REU program and the FirstGen program at University of Connecticut.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.
北冰洋在调节地球气候方面具有重要作用。虽然它只占海洋总量的3%,但却吸收了我们每年向大气中排放的二氧化碳的10%。虽然北极一直有一个永久的冰帽,但它的面积正在缩小,到2040年,永久的夏季冰帽将消失。这意味着每年融化的冰的强度将会增加,而人们对融化的冰将如何改变北极地表水的化学成分知之甚少。这项研究将对北极海冰、雪和盐水进行取样,绘制其在北极东部的化学剖面,目的是随着北极气候的变化,对未来的北极环境做出更好的预测。主要关注的是硼和盐度的冰剖面,在公海中硼和盐度的比值是恒定的,但在盐度低于30 g/kg的边缘冰带,这个比值可能会发生变化,并且由于融化而变得新鲜。该项目还将创建课程,展示我们如何使用化学来完成这项工作并了解气候。本项目与2023年5月至6月在I/B Oden进行的大气河流和海冰融化开始(ARTofMELT)考察一起,在边缘冰区(MIZ)进行取样,包括冰芯和盐水。目标是辨别这些独特系统的硼盐比例及其对总碱度和大气二氧化碳吸收的影响。目标包括:1)确定北极海冰和盐水中的硼盐(B/S)比,2)确定北极海冰和盐水中的碳酸盐系统参数,3)比较上述所有参数在年度和多年冰和盐水中的剖面,4)评估给定冰站冰融化过程中这些参数的变化,5)评估对MIZ邻近融水B/S比和总碱度的影响。智力优势:本研究有助于生物地球化学、物理海洋学、气象和气候变化研究。B/S比值的结果将为极地地区的总碱度分析提供重要的修正,并改善未来北极二氧化碳吸收估算和建模工作的参数化。最值得注意的是,这项研究将首次提供该地区年度冰的硼盐剖面,以及任何地区的第一个多年冰剖面。此外,还将生成其他生物地球化学相关参数的冰和盐水剖面。预计本研究结果将为北极变暖和北极二氧化碳吸收的未来生物地球化学提供新的见解。更广泛的影响:根据本研究中使用的化学概念(平衡常数,酸度常数等),将生成针对高中和本科化学学生的十个配对视频(来自巡航)和课程计划。巡游结束后,这些视频将发布在项目网页上,并与PBS学习媒体和其他教育资源平台共享。所有课程都将介绍北极冰损失的主题。研究人员还将继续与高年级插画学生合作,为更广泛的公众创造北极海冰撤退主题项目(书籍,海报,短片动画)。该项目将为两名女研究生创造机会,其中一名将有机会在韩国进行硼分析的国际合作,并通过REU项目和康涅狄格大学的FirstGen项目为至少四名少数民族本科生提供机会。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)
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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Penny Vlahos其他文献
The role of sea spray in atmosphere–ocean gas exchange
海浪飞沫在大气-海洋气体交换中的作用
- DOI:
10.1038/s41561-021-00796-z - 发表时间:
2021-08-05 - 期刊:
- 影响因子:16.100
- 作者:
Allison Staniec;Penny Vlahos;Edward C. Monahan - 通讯作者:
Edward C. Monahan
Linking multi-media modeling with machine learning to assess and predict lake chlorophyll <em>a</em> concentrations
- DOI:
10.1016/j.jglr.2021.09.011 - 发表时间:
2021-12-01 - 期刊:
- 影响因子:
- 作者:
Christina Feng Chang;Valerie Garcia;Chunling Tang;Penny Vlahos;David Wanik;Jun Yan;Jesse O. Bash;Marina Astitha - 通讯作者:
Marina Astitha
Uptake and fate of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) in coastal marine biota determined using a stable isotopic tracer, <sup>15</sup>N – [RDX]
- DOI:
10.1016/j.chemosphere.2016.03.038 - 发表时间:
2016-06-01 - 期刊:
- 影响因子:
- 作者:
Mark L. Ballentine;Thivanka Ariyarathna;Richard W. Smith;Christopher Cooper;Penny Vlahos;Stephen Fallis;Thomas J. Groshens;Craig Tobias - 通讯作者:
Craig Tobias
Beyond the field: How pesticide drift endangers biodiversity
- DOI:
10.1016/j.envpol.2024.125526 - 发表时间:
2025-02-01 - 期刊:
- 影响因子:
- 作者:
Saeed S. Albaseer;Veerle L.B. Jaspers;Luisa Orsini;Penny Vlahos;Hussein E. Al-Hazmi;Henner Hollert - 通讯作者:
Henner Hollert
Penny Vlahos的其他文献
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{{ truncateString('Penny Vlahos', 18)}}的其他基金
Spray-mediated air-sea gas exchange of carbon dioxide in high winds
强风中喷雾介导的二氧化碳气海气体交换
- 批准号:
2218781 - 财政年份:2022
- 资助金额:
$ 28.87万 - 项目类别:
Standard Grant
Carbonate system dynamics and biogeochemistry in a changing Arctic
变化中的北极碳酸盐系统动力学和生物地球化学
- 批准号:
2049991 - 财政年份:2021
- 资助金额:
$ 28.87万 - 项目类别:
Standard Grant
Collaborative Research: Spray-Mediated Gas Fluxes across the Air-Sea Interface
合作研究:喷雾介导的气海界面气体通量
- 批准号:
1630846 - 财政年份:2016
- 资助金额:
$ 28.87万 - 项目类别:
Standard Grant
Collaborative Research: Spray-Mediated Gas Fluxes across the Air-Sea Interface
合作研究:喷雾介导的气海界面气体通量
- 批准号:
1356541 - 财政年份:2014
- 资助金额:
$ 28.87万 - 项目类别:
Standard Grant
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