Collaborative Research: The Bermuda Atlantic Time-series Study: Sustained Biogeochemical, Ecosystem and Ocean Change Observations and Linkages in the North Atlantic (Years 31-35)

几十年的长期观测是研究海洋物理、生物和化学以及海洋对环境变化的反应的有力工具。百慕大大西洋时间序列研究，简称BATS，自1988年以来一直在持续进行。BATS项目的研究目标是：(1)提高对海洋碳循环时变组分和相关营养元素（如氮、磷、硅）循环的认识；(2)确定导致这种变化的相关物理、化学和生态系统特性。此外，BATS计划具有强大而多样的广泛影响，通过为航海科学家和建模者提供高质量的海洋观测和数据，以及研究人员可以构思和检验假设的框架，为海洋科学领域做出了贡献。该合同将在未来五年支持BATS项目的运作。BATS的主要研究主题如下：(1)量化海-气耦合和气候变率对CO2海气交换和向海洋内部输出碳的作用；(2)通过Redfield比值范式，揭示了表层和深层碳和养分循环的年际-年代际变化趋势及其控制因素；(3)量化浮游生物群落结构和功能对地表通量和动力过程变化的响应及其对生物地球化学循环的影响；(4)促进下一代海洋传感器、工具和技术的开发、校准和验证；(5)生成可供经验主义者、建模者和学生使用的数据集。本研究将海洋物理、化学和生物学整合到一个框架中，以了解北大西洋副热带环流的海洋过程和海洋变化。现有的29年BATS数据为季节性和年际变率、马尾藻海生态系统对自然气候变率的响应以及潜在海洋变化的信号检测提供了强有力的约束。该项目将把BATS项目延长至31-35年，通过综合研究方法和大量合作努力来解决一系列10个相互关联的问题。除了上述主题，并嵌入到10个问题和方法中，BATS团队将重点关注，例如，颗粒生产和生物地球化学的耦合；重新审视生物碳泵的复杂性；氧气下降;马尾藻海的水文、物理、海洋碳循环和生物地球化学变化。将保持最高质量的数据观察和收集，并用于解决这些问题。重要的是，BATS基地的广泛合作，跨越物理和生物地球化学学科，将有助于实现这些广泛的目标。建议与社区利益相关者建立紧密联系，并与夏威夷海洋时间序列密切合作（包括方法相互比较和人员交流）。这项工作将把该项目的研究成果扩展到海洋学界内外的教育和培训机会，包括对本科生和研究生的培训和指导。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。

Long-term observations over several decades are a powerful tool for investigating ocean physics, biology, and chemistry, and the response of the oceans to environmental change. The Bermuda Atlantic Time-Series Study, known as BATS, has been running continuously since 1988. The research goals of the BATS program are: (1) to improve our understanding of the time-varying components of the ocean carbon cycle and the cycles of related nutrient elements such as nitrogen, phosphorus, and silicon; and, (2) to identify the relevant physical, chemical and ecosystem properties responsible for this variability. In addition, the BATS program has strong and diverse broader impacts, contributing to the field of ocean sciences by providing high quality ocean observations and data for seagoing scientists and modelers, and a framework through which researchers can conceive and test hypotheses. This award will support the operations of the BATS program for five more years.The primary BATS research themes are as follows: (1) Quantify the role of ocean-atmosphere coupling and climate variability on air-sea exchange of CO2, and carbon export to the ocean interior; (2) Document trends and the controls on the interannual to decadal scale variability in carbon and nutrient cycles to their coupling in the surface and deep ocean via the Redfield Ratio paradigm; (3) Quantify the response of planktonic community structure and function, and impact on biogeochemical cycles to variability in surface fluxes and dynamical processes; (4) Facilitate development, calibration and validation of next generation oceanographic sensors, tools and technologies; and, (5) Generate a dataset that can be utilized by empiricists, modelers and students. This research integrates ocean physics, chemistry and biology into a framework for understanding oceanic processes and ocean change in the North Atlantic subtropical gyre. The existing 29 years of BATS data provide robust constraints on seasonal and interannual variability, the response of the Sargasso Sea ecosystem to natural climate variability, and signal detection of potential ocean changes. This project would extend the BATS program through years 31-35 to address a series of ten interlinked questions through integrated research approaches and a multitude of collaborative efforts. In addition to the themes above, and embedded into the ten questions and approaches, the BATS team will focus on, for example, coupling of particle production and biogeochemistry; revisiting the complexities of the biological carbon pump; oxygen decline; and changes in the hydrography, physics, ocean carbon cycle and biogeochemistry of the Sargasso Sea. The highest quality data observation and collection will be maintained and used to address these questions. Importantly, a wide range of collaborations at the BATS site, spanning the physical and biogeochemical disciplines, will aid these broad goals. Strong links to community stakeholders, and close collaboration (including methods intercomparisons and personnel exchanges) with the Hawaii Ocean Time-series are proposed. This work will extend the research findings of the project into educational and training opportunities within and beyond the oceanographic community, including training and mentorship of both undergraduate and graduate students.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.