RII Track-4: NSF: Toward Tracking Organic Carbon Cycling in a Changing Arctic Ocean using Optical Properties and Numerical Modelling

RII Track-4：NSF：利用光学特性和数值模型追踪不断变化的北冰洋中的有机碳循环

• 批准号: 2132175
• 负责人: Atsushi Matsuoka
• 金额: $ 22.1万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-02-01 至 2024-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2132175&HistoricalAwards=false
• 关键词: RII; Track; NSF; Toward; Tracking

Phytoplankton, which form the base of marine food webs, are responding to the associated higher light availability and fresher surface water in the Arctic. Their spring bloom is occurring earlier due to early sea ice melt, and they have recently tended to show a fall bloom. This suggests that the phytoplankton are acclimating to a “new Arctic”. The goal of this project is to improve the understanding of phytoplankton-originating organic carbon cycling through a collaboration with scientists at the Scripps Institution of Oceanography (SIO) in San Diego, California. The opportunity to collaborate with two leading scientists in the field of optical oceanography at SIO will positively impact and potentially transform the PI’s research career trajectory. These benefits will also enhance the research capacity of the PI’s home institution.The goal of the project is to 1) investigate phytoplankton changes in response to environmental variables, 2) track vertical export of phytoplankton-originating organic carbon, and 3) predict the impact of phytoplankton changes on zooplankton abundance. The investigator will analyze several comprehensive datasets acquired on five field campaigns to the Arctic between 2010 and the fall of 2021. The data include inherent and apparent optical properties, phytoplankton pigments and community composition, and a full suite of physical and chemical measurements. Samples obtained from the most recent campaign will be shipped to SIO for analysis using a customized optical instrument and technique developed by two leading experts in the field of Optical Oceanography at SIO. The phytoplankton community composition will be derived from the measured phytoplankton absorption spectra. The vertical export of organic carbon will be estimated using an innovative approach based on profiles of particle backscattering. Together with the data from spring and summer campaigns in previous years, the fall data will be used to parameterize a numerical model of the seasonal succession of phytoplankton and zooplankton. The primary outputs will be publications and presentations for both scientific and public audiences. Expected outcomes will consist of training in the state-of-the-art optical measurement and modelling techniques and mentoring of a post-doc in the integration of the knowledge into a numerical model.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.

构成海洋食品网的基础的浮游植物造成了相关的更高光的可用性和北极中新鲜的地表水。由于早期的海冰融化，他们的春季盛开发生了，他们最近倾向于散发出秋天的绽放。这表明浮游植物正在适应“新北极”。该项目的目的是通过与加利福尼亚州圣地亚哥的Scripps海洋学（SIO）的科学家合作，通过与科学家合作来提高对浮游植物的有机碳循环的理解。与SIO光学海洋学领域的两位主要科学家合作的机会将对PI的研究职业轨迹产生积极影响并有可能改变。这些好处还将增强PI家居机构的研究能力。该项目的目的是1）研究浮游植物变化的变化，以应对环境变量，2）跟踪植物浮游生物的有机碳的垂直导出，以及3）预测浮游植物对浮游植物对浮游植物的影响的影响。研究人员将分析2010年至2021年秋季之间在北极进行的五个现场活动中获得的几个全面数据集。数据包括继承和明显的光学特性，浮游植物颜料和社区组成以及一套物理和化学测量。从最近的活动中获得的样本将使用由SIO光学海洋学领域的两位主要专家开发的定制光学仪器和技术运送到SIO进行分析。浮游植物群落组成将源自测得的浮游植物抽象光谱。有机碳的垂直导出将使用基于粒子反向散射的概况的创新方法估算。加上往年春季和夏季活动的数据，秋季数据将用于参数化浮游植物和浮游动物的季节性成功的数值模型。主要产出将是科学和公众观众的出版物和演示。预期的结果将包括在最先进的光学测量和建模技术中进行培训，以及将知识整合到数值模型中的DOC中的心理。该奖项反映了NSF的法定任务，并通过使用基金会的知识分子和更广泛的影响审查标准来通过评估来诚实地支持NSF的法定任务。