Support for the U. S. GEOTRACES Project Office

对美国 GEOTRACES 项目办公室的支持

• 批准号: 1829563
• 负责人: Robert Anderson
• 金额: $ 123.32万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-10-01 至 2024-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1829563&HistoricalAwards=false
• 关键词: Support; U.; S.; GEOTRACES; Project

This award would support the work of the U.S. GEOTRACES Project Office to coordinate and support the activities of investigators at U.S. institutions who are fulfilling the GEOTRACES mission, specifically: "To identify processes and quantify fluxes that control the distributions of key trace elements and isotopes (TEIs) in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions." Trace elements such as iron, cobalt and zinc occur in the ocean at ultra-low concentrations. Their low abundance is thought to influence the health and fertility of marine ecosystems. Consequently, gaining an accurate knowledge of the processes that regulate the distribution of these elements in the ocean forms a key contribution to sustainable management of marine resources. To fulfill the GEOTRACES mission, and achieve benefits derived from doing so, GEOTRACES is making observations spanning a global array of ocean sections in close connection with numerical modeling, and supported by a solid foundation of ongoing intercalibration of analytical methods and a program-wide data management system. The U.S. GEOTRACES Project Office takes leadership in ensuring successful completion of US GEOTRACES contributions in support of the mission and in leading the international GEOTRACES data management and synthesis initiatives. The award supports project office personnel, working groups contributing to GEOTRACES synthesis, events that facilitate the use of GEOTRACES products by the broader community, and workshops for expedition planning and data analysis.US GEOTRACES is in the middle of a decade-scale plan to complete a prioritized sequence of ocean sections. Synthesis activities will interpret distributions of TEIs measured along these sections to identify the principal sources of TEIs in the ocean and, in many cases, to quantify the rates of processes that regulate TEI supply and removal. Synthesis activities, furthermore, assess the role of TEIs in biogeochemical cycles of carbon and major nutrients, including bioavailability of micronutrients together with their biological uptake and regeneration throughout the water column. Products of these activities will feed into modeling of the ocean biogeochemical cycles that assesses the sensitivity of TEI distributions to changing environmental conditions. Building and improving the GEOTRACES data management system will be an ongoing process throughout the proposed funding period. As co-chair of the standing committee responsible for the structure of the GEOTRACES data product, Anderson will work closely with the Data Management Committee throughout the process. The primary goal for the immediate future is to replace the current system, which involves manual transfer of Excel workbooks and Google docs between the three committees that handle data, the GEOTRACES Data Assembly Center, and the individual who assembles the data products, with an automated system shared by all involved that eliminates manual transfer of individual data sets. It is anticipated that developing the new data system will take two years, so the process will begin in the spring of 2018 to ensure that the system is available in time to prepare the next intermediate data product, scheduled for release in 2021.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.

该奖项将支持美国GEOTRACES项目办公室的工作，以协调和支持美国机构中正在履行GEOTRACES使命的调查人员的活动，具体而言：“确定控制海洋中关键微量元素和同位素（TEI）分布的过程和量化通量，并确定这些分布对不断变化的环境条件的敏感性。“铁、钴和锌等微量元素在海洋中的浓度极低。 它们的低丰度被认为会影响海洋生态系统的健康和繁殖力。 因此，准确了解这些元素在海洋中的分布规律，是对海洋资源可持续管理的一个重要贡献。为了完成GEOTRACES的使命，并实现由此产生的效益，GEOTRACES正在进行跨越全球海洋剖面的观测，并与数值模拟密切相关，并得到分析方法和全方案数据管理系统的持续相互校准的坚实基础的支持。美国GEOTRACES项目办公室在确保成功完成美国GEOTRACES对支持使命的贡献方面发挥领导作用，并领导国际GEOTRACES数据管理和综合举措。该奖项支持项目办公室人员、为GEOTRACES合成做出贡献的工作组、促进更广泛社区使用GEOTRACES产品的活动以及用于考察规划和数据分析的研讨会。US GEOTRACES正在进行一项十年规模的计划，以完成海洋部分的优先顺序。综合活动将解释沿沿着这些部分测量的TEI的分布，以确定海洋中TEI的主要来源，并在许多情况下，量化调节TEI供应和去除的过程的速率。此外，合成活动评估了TEI在碳和主要营养素的生物地球化学循环中的作用，包括微量营养素的生物利用度及其在整个水柱中的生物吸收和再生。这些活动的产品将投入海洋生物地球化学循环的建模，评估TEI分布对不断变化的环境条件的敏感性。在整个拟议供资期间，建立和改进GEOTRACES数据管理系统将是一个持续的进程。作为负责GEOTRACES数据产品结构的常设委员会的联合主席，安德森将在整个过程中与数据管理委员会密切合作。近期的主要目标是取代目前的系统，该系统涉及在处理数据的三个委员会、GEOTRACES数据汇编中心和汇编数据产品的个人之间手工传送Excel工作簿和谷歌文档，取而代之的是一个所有参与者共享的自动化系统，消除了手工传送个人数据集的情况。预计开发新的数据系统将需要两年时间，因此该过程将于2018年春季开始，以确保该系统能够及时准备下一个中间数据产品，计划于2021年发布。该奖项反映了NSF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。