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

该项目通过a)波弗特和楚科奇陆架和斜坡地区太平洋水的生物地球化学变化，重点是碳和氮；以及b)比较分析宽阔的楚科奇大陆架和狭窄的波弗特陆架及邻近斜坡的调查结果，以促进将西部北极纳入泛北极视角，从而促进西部北极与北冰洋之间的相互作用。该项目将评估碳和氮在感兴趣地区的运输、交换和转化过程。具体目标是：a)确定与履行机构合作者计算的体积输送有关的碳和氮的质量输送和去向；b)解释碳和氮相对于生物和物理条件的空间分布和时间变异性；c)评价有机物质在溶解相和颗粒相之间的分配；d)确定群落净生产量及其去向；e)确定C：N化学计量学，作为生物学研究的补充，特别是与楚科奇海和博福特海强烈浮游植物水华的群落结构和季节演变有关；以及f)评价溶解有机物质和颗粒有机物质对北极盐跃层表观氧利用发展和从大陆架输出的贡献。

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.