Collaborative Research: Pacific-Arctic Carbon Synthesis - Transformations, Fluxes, and Budgets

合作研究：太平洋-北极碳合成 - 转换、通量和预算

• 批准号: 1107997
• 负责人: Jeremy Mathis
• 金额: $ 32.5万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1107997&HistoricalAwards=false
• 关键词: Collaborative; Research; Pacific; Arctic; Carbon

Predicting future conditions of the Arctic Ocean system requires scientific knowledge of its present status as well as a process-based understanding of the mechanisms of change. This research effort will synthesize a number of recent, upcoming, and historical datasets to create three regional carbon budgets for the Chukchi/western Beaufort Sea, the Bering Sea, and the northern Gulf of Alaska. As waters from the North Pacific make their way through these regions a number of transformations occur that modify them before they enter the central Arctic Ocean. In general, the waters exiting these shelf seas are fresher, colder, and have lower pH due to the uptake of CO2 and the remineralization of organic matter. Because of the importance that biogeochemical transformations have in preconditioning the waters of the central Arctic and ultimately parts of the North Atlantic it is important to gain a better understanding of how these processes impact the carbon biogeochemistry of the region. The investigators propose to address this issue by better constraining the carbon budgets for three zones in the Pacific sector of the Arctic Ocean including coastal fluxes, rates of primary production and air-sea exchange of CO2 as well as developing algorithms with predictive capabilities for carbonate mineral saturation states. The aim of this effort is to determine how physical forcing and biological responses control the marine carbon cycle including the rates of air-sea CO2 exchange and net community production as well as ocean acidification effects in the contrasting shelf environments, and to better constrain the present stocks and fluxes of carbon and determine how climate change will affect the regional carbon cycle. The project will support four early career investigators, a postdoctoral scientist, and a Ph.D. student.

预测北极海洋系统的未来条件需要科学了解其当前地位以及基于过程的变化机制的理解。这项研究工作将综合许多最近，即将到来的历史数据集，为Chukchi/Western Beaufort Sea，Bering Sea和Alaska北部海湾创建三个区域碳预算。当北太平洋的水域穿越这些地区时，发生了许多转变，在它们进入中央北极海洋之前会改变它们。通常，由于二氧化碳的摄取和有机物的回忆，离开这些架子海的水域更新鲜，更冷，并且pH值较低。由于生物地球化学转化在预处理北极地区和最终北大西洋地区的水域中具有重要意义，因此重要的是要更好地了解这些过程如何影响该地区的碳生物地球化学。研究人员建议通过更好地限制北极海洋太平洋地区的三个区域的碳预算来解决这一问题，包括沿海通量，初级生产率和二氧化碳的空气交换，以及开发具有碳酸盐矿物质饱和状态的预测能力的算法。这项工作的目的是确定物理强迫和生物反应如何控制海洋碳循环，包括空气二氧化碳交换和净社区生产的速率以及对比鲜明的货架环境中的海洋酸化影响，并更好地限制碳的当前库存和磁通量并确定气候变化将如何影响区域碳循环。该项目将支持四名早期职业调查员，博士后科学家和博士学位。学生。