Development of a Micro-Rosette Sensor for Total Dissolved Inorganic Carbon Measurement from Autonomous Lagrangian Ocean Profilers

开发用于通过自主拉格朗日海洋剖面仪测量总溶解无机碳的微型花环传感器

• 批准号: 0961250
• 负责人: Todd Martz
• 金额: $ 61.4万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-07-15 至 2015-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0961250&HistoricalAwards=false
• 关键词: Development; Micro; Rosette; Sensor; Total

Arrays of profiling floats provide the potential for orders-of-magnitude improvement in ocean observing, relative to ships. This fact has already been realized by physical oceanographers studying the ocean heat budget and large-scale mixing processes and is now gaining momentum in the ocean biogeochemistry and ecological modeling communities. Attempts to add off-the-shelf sensors for the CO2 system to profiling floats has thus far been ineffectual because these devices were not built with the express intention of operating on profilers, and because the sensors available at present are limited to pCO2 measurements which require long dwelling times at depth intervals for equilibration due to slow response times as pCO2 is highly sensitive to temperature and pressure and cannot be easily measured ex-situ. Consequently, there is currently no technology available for meaningful observations of the inorganic carbon system from profiling floats. The micro-rosette approach outlined in this proposal will allow, for the first time, profiles of dissolved inorganic carbon from profiling floats.The PI's request funding to build and test a new concept: a "micro-rosette" to be deployed on an ARGO-type profiling float. The micro-rosette is a device intended to operate specifically on board a profiling float, capturing discrete seawater samples during float ascent and storing them for subsequent chemical analysis. The application that we focus on here is the measurement of total dissolved inorganic carbon, CT. This will result in the first autonomous, Lagrangian vertical profiles of CT. Realizing a working prototype micro-rosette involves an engineering component in order to develop a low power carousel-type device in addition to a chemistry componentresponsible for modification and fine-tuning of a proven flow injection analysis method. A successful project will result in the first autonomous, Lagrangian vertical profiles of CT in the upper 2000 m, marking a major step in development of a new generation of tools necessary to better understand annual cycles of carbon in the ocean in addition providing direct observations of ocean acidification over large areas of the ocean.This project supports an increase in the level of collaboration between researchers in the US, Ireland, and Northern Ireland under the US/Ireland R&D Partnership Program. Each of the three partners will receive funding exclusively from their respective national science funding agencies. The effort is multi-disciplinary, and brings together expertise in ocean biogeochemistry (Martz, US), ocean physics (Ward, Ireland) and microfluidics engineering (Maguire and McLaughlin, Northern Ireland).Broader Impacts: The identified broader impacts included improving the quantity of data for evaluating present and future changes in the ocean inorganic carbon cycle and the great potential for application to other analytes. The collaboration between researchers in the US, Ireland, and Northern Ireland under the US/Ireland R&D Partnership Program must also be considered a broader impact. Each of the three partners will receive funding exclusively from their respective national science funding agencies. The effort is multi?disciplinary, and brings together expertise in ocean biogeochemistry (Martz, US), ocean physics (Ward, IE) and microfluidics engineering (Maguire and McLaughlin, NI). The US and Ireland portions includes support for a full time graduate student, the Northern Ireland portion will support a research associate.

相对于船只，各种分析的浮子为海洋观测的量顺序提高提供了潜力。研究海热预算和大规模混合过程的物理海洋学家已经实现了这一事实，现在正在海洋生物地球化学和生态建模社区中获得动力。迄今为止，尝试将二氧化碳系统添加到现场传感器添加到浮子中的尝试是无效的，因为这些设备不是构建的，而是构建的，目前可用的传感器仅限于PCO2测量值，而PCO2的测量需要长时间的居住时间，因为pco2高度敏感，因此由于缓慢的响应时间和压力很容易付诸实用。因此，目前尚无对分析浮子对无机碳系统进行有意义观察的技术。该提案中概述的微型镜头方法将首次允许从分析上溶解的无机碳的概况。 Micro-Rosette是一种旨在专门在板上的浮子上操作的设备，可在浮子上升期间捕获离散的海水样品，并将其存储以进行后续化学分析。我们在这里关注的应用是测量总溶解的无机碳，CT。这将导致CT的第一个自主lagrangian垂直轮廓。实现工作原型的微型镜头涉及工程组件，以开发低功率旋转型型设备，除了对经过验证的流量注射分析方法进行修改和微调的化学反应之外，还可以进行化学反应。 A successful project will result in the first autonomous, Lagrangian vertical profiles of CT in the upper 2000 m, marking a major step in development of a new generation of tools necessary to better understand annual cycles of carbon in the ocean in addition providing direct observations of ocean acidification over large areas of the ocean.This project supports an increase in the level of collaboration between researchers in the US, Ireland, and Northern Ireland under the US/Ireland R&D Partnership Program.这三个合作伙伴中的每一个都将仅从各自的国家科学资助机构中获得资金。 The effort is multi-disciplinary, and brings together expertise in ocean biogeochemistry (Martz, US), ocean physics (Ward, Ireland) and microfluidics engineering (Maguire and McLaughlin, Northern Ireland).Broader Impacts: The identified broader impacts included improving the quantity of data for evaluating present and future changes in the ocean inorganic carbon cycle and the great potential for application to other analytes.美国/爱尔兰研发合作计划下的美国，爱尔兰和北爱尔兰研究人员之间的合作也必须被认为是更广泛的影响。这三个合作伙伴中的每一个都将仅从各自的国家科学资助机构中获得资金。这项努力是多学科的，并汇集了海洋生物地球化学（Martz，美国），海洋物理学（Ward，IE）和微流体工程（Maguire and McLaughlin，NI）的专业知识。美国和爱尔兰的部分包括对全职研究生的支持，北爱尔兰部分将支持研究助理。