OCE PRF Track 2 (International): Tracking mesopelagic carbon flux and particle size on a multi-ocean scale using a fleet of bio-optical profiling floats

OCE PRF Track 2（国际）：使用一组生物光学剖面浮标跟踪多海洋尺度的中层碳通量和颗粒尺寸

• 批准号: 1420929
• 金额: $ 19.4万
• 依托单位: Briggs Nathan
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-02-01 至 2017-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1420929&HistoricalAwards=false
• 关键词: OCE; PRF; Track; International; Tracking

The sinking of organic carbon through the mesopelagic ocean (100-1000 meters) represents an important long-term sink for atmospheric carbon dioxide and a carbon source for deep-sea and benthic ecosystems. Research results from this project will make a significant contribution to the science of carbon flux, which is important both for improving climate projections and understanding deep ecosystems. The project was submitted to the Ocean Sciences Postdoctoral Research Fellowship program and will further the career of a promising scientist. Given the global nature of studying carbon flux in the mesopelagic, the fellow is being hosted by Hervé Claustre at the Laboratoire d'Oceanographie de Villefranche(LOV) in France and building strong international collaborations to improve understanding on this internationally important topic. This award was supported with funding from the Office of International and Integrative Activities.Temperate and subpolar phytoplankton blooms account for large amounts of mesopelagic carbon flux. Mesopelagic flux patterns may change considerably in the future due to climate change, potentially causing climate feedbacks and/or threatening deep ecosystems. Current technologies for measuring mesopelagic flux are logistically challenging, involving the retrieval of physical samples. Current methods are also difficult to compare, due to differing sampling scales and methods. In this project, the fellow will increase coverage of mesopelagic flux measurements during high-latitude phytoplankton blooms by applying novel methods the fellow developed during graduate studies to a large "Bio-Argo" float dataset. The flux dataset produced as a result of this project will be of great benefit to the scientific community, allowing broad analysis of global patterns in addition to the intensive, region-specific flux studies undertaken using traditional methods. By identifying broad-scale patterns in flux and their drivers, this work will increase knowledge of the regions studied and help satellite oceanographers and modelers test and improve flux products. Furthermore, as the Bio-Argo fleet expands to form a permanent, global network, this work will form the start of something bigger: a global, in situ flux record. As such, methodological lessons learned during analysis of this project will inform future sampling strategies and validation efforts, helping to ensure the quality of this global record.

有机碳的下沉介质海洋（100-1000米）是气动性碳的重要长期水槽，以及对深海和底栖生态系统的核心，这对于改善项目项目和项目都很重要。在法国的Laboratoire de Villefranche（LOV）主持了一个有前途的科学家的职业活动。用于大量中质碳通量的浮游生物和浮游植物的盛开。高光谱浮游浮游生物浮游生气在研究生研究期间开发的低浮动方法在大型“浮点数据集中开发的低水平的方法。使用传统方法进行的大量，特定区域的通量研究，通过识别通量及其驾驶员区域中的广泛模式，并帮助卫星海洋法师和模型测试和改善通量的全球网络。更大：全球原位通量记录。