Collaborative Research: Transport and Transformations of Carbon and Nitrogen in the Western Arctic Ocean: A Contribution to the SBI Project

合作研究：北冰洋西部碳和氮的传输和转化：对 SBI 项目的贡献

• 批准号: 0124900
• 负责人: Dennis Hansell
• 金额: $ 51.5万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0124900&HistoricalAwards=false
• 关键词: Collaborative; Research; Transport; Transformations; Carbon

This project contributes to Western Arctic Shelf-Basin Interactions (SBI) by focussing on a) biogeochemical modifications of Pacific water over the Beaufort and Chukchi shelf and slope regions,with emphasis on carbon and nitrogen; and b) comparative analysis of the findings over the broad Chukchi shelf and narrow Beaufort shelf and adjacent slopes to facilitate integration of the Western Arctic into a Pan-Arctic perspective. The project will evaluate the processes of carbon and nitrogen transport, exchanges and transformations in the regions of interest. Specific objectives are: a) determination of mass transport and fate of carbon and nitrogen associated with the volume transports calculated by SBI collaborators; b) interpretation of carbon and nitrogen spatial distributions and temporal variability relative to biologicaland physical conditions; c) evaluation of partitioning of organic matter between dissolved and particulate phases; d) determination of net community production and it's fate; e) determination of C:N stoichiometry as a complement to biological studies, particularly in relation to community structure and seasonal progression of intense phytoplankton blooms in the Chukchi and Beaufort Seas; and f) evaluation of the contribution of dissolved and particulate organic material to apparent oxygen utilization development in the Arctic halocline and export from the shelf.

该项目通过以下方式促进西北极陆架-海盆相互作用：a）太平洋水在博福特和楚科奇陆架和斜坡区域的生物地球化学变化，重点是碳和氮; B）对宽阔的楚科奇陆架和狭窄的博福特陆架及邻近斜坡的调查结果进行比较分析，以促进西北极纳入泛北极视角。该项目将评估感兴趣区域的碳和氮运输、交换和转化过程。 具体目标是：a）确定与SBI合作者计算的体积运输相关的碳和氮的质量运输和归宿; B）解释相对于生物和物理条件的碳和氮的空间分布和时间变化; c）评估溶解相和颗粒相之间有机物的分配; d）确定净群落生产及其归宿; e）确定C：N化学计量学作为生物学研究的补充，特别是在楚科奇海和博福特海浮游植物大量繁殖的群落结构和季节性进展方面;和f）评价溶解和颗粒有机物质对北极盐跃层中表观氧利用发展和大陆架出口的贡献。