Operation of a National Ocean Sciences Accelerator Mass Spec

国家海洋科学加速器质谱仪（NOSAMS）的建立是为了提供自然水平的14 C分析。NOSAMS通过及时生成海水、地下水、有机碳（OC）、碳酸盐、沉积物、单个化合物和其他物质的高精度、高精度14 C数据，在海洋学领域发挥着重要作用。NOSAMS的三管齐下的使命是使海洋科学界能够获得高质量的放射性碳测量，不断改进和发展新的测量能力，并作为教育和外联资源。NOSAMS为早期职业科学家，特别是研究生和博士后研究员提供了重要的培训机会。毕业生提供实习，这将导致从运行自己的样本中获得经验，并公布结果。博士后将通过该奖项获得为期2年的支持，以及WHOI博士后，该奖项不收取任何费用。PI计划每年在OSM或AGU秋季会议上举办一系列为期一天的短期课程。NOSAMS在为不同的用户社区提供全面的放射性碳服务和专业知识方面是独一无二的。NOSAMS提供的数据对于了解地球表面环境的地球物理过程至关重要，例如过去和现在的海洋环流以及碳的地球化学循环。作为NSF资助的两个主要实验的一部分收集的水样被称为气候变率和可预测性（CLIVAR）和全球海洋船基水文调查计划（GO-SHIP），迄今为止，NOSAMS分析的样本中有很大一部分。NOSAMS将在未来五年内继续为海洋学界提供14 C分析，并将继续研究14 C测年的新方法。在未来五年内，NOSAMS计划利用最近安装的MIni CAbon数据系统（MICADAS）的新功能，并通过提高自动化来简化操作。MICADAS的混合气体接口为快速测量、新程序和新样品类型提供了新的机会。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。

The National Ocean Sciences Accelerator Mass Spectrometer (NOSAMS) was established to provide analyses of 14C at natural levels. NOSAMS plays an important role in the oceanographic community by generating high accuracy, high precision 14C data in a timely manner for seawater, groundwater, organic carbon (OC), carbonates, sediments, individual compounds, and other materials. The three-pronged mission of NOSAMS is to make high quality radiocarbon measurements accessible to the ocean sciences community, to continuously improve and develop new measurement capabilities, and to serve as an educational and outreach resource. NOSAMS provides significant training opportunities for early career scientists, and especially graduate students and post-doctoral fellows. Graduates are offered internships that will lead to experience gained from running their own samples, and publication of the results. Postdocs will be supported for 2-year terms through the award, as well as a WHOI postdoc at no cost to this award. The PIs plan to hold a series of one-day short courses every year at either OSM or AGU Fall meetings.NOSAMS is unique in offering comprehensive radiocarbon services and expertise to a diverse community of users. NOSAMS has provided data that is critical to understanding geophysical process in the earth's surface environment, for example past and present ocean circulation, and biogeochemical cycling of carbon. Water samples collected as part of two major NSF-funded experiments known as the Climate Variability and Predictability (CLIVAR) and Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP) have comprised a significant fraction of samples analyzed by NOSAMS to date. NOSAMS will continue to provide 14C analysis for the oceanographic community for the next five years and will continue to research new methods for 14C dating. Over the next five years NOSAMS plans to capitalize on the new capabilities of the recently installed MIni CArbon DAting System (MICADAS) and to streamline operations by increasing automation. The hybrid gas interfaces of the MICADAS offer new opportunities for rapid measurements, new procedures, and new sample types.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.