Collaborative Research: Transport, Transformation and Utilization of Dissolved Organic Matter in the NE Atlantic Ocean

摘要/ abstract摘要：toce -0095223和oce -0095090溶解有机碳（DOM）向出口地区迁移的过程主要是通过显示溶解有机碳（DOC）浓度增加的表层积累和向深处渗透的几个剖面来推断的。从源区到出口点的流动过程中的分解尚未研究，溶解有机氮和磷（DON和DOP）的伴随运输也没有研究。在这个项目中，弗吉尼亚海洋科学研究所和罗森斯蒂尔海洋与大气科学学院的研究人员将在东北大西洋的春季浮游植物繁殖期间观察累积的DOC， DON和DOP的运输，该地区之前在JGOFS北大大西洋繁殖实验中进行了研究。他们将跟踪越冬和新产生的DOM的运输和同时分解，因为它流经东北大西洋，流向英国东北部挪威海的底部水形成地点。该项目将利用2001年春季英国科考船RRS CHARLES DARWIN与英国南安普顿海洋中心（SOC） George Deacon部门的同事一起参加对东北大西洋的详细水文调查的机会。一个主要的巡航目标是计算体积运输，从中可以估计DOM的大量运输。虽然这些过程的大致轮廓现在已经勾画出来了，但还没有详细的研究在相关的水文框架中明确研究了DOM的传输，也没有研究确定了正在进行的分解的同时估计。这项由生物地球化学家、微生物生态学家和物理海洋学家合作开展的研究将首次提供有关DOC、DON和DOP浓度、体积输送和分解速率的天气性数据，从而可以评估DOM组分的质量输送。

ABSTRACTOCE-0095223 and OCE-0095090The process of dissolved organic matter (DOM) transport toward export regions has been inferred mostly from a few sections showing surface accumulation of enhanced dissolved organic carbon (DOC) concentration and penetration to depth. Decomposition during flow from source regions to export sites has not been studied, nor has the accompanying transport of dissolved organic nitrogen and phosphorus (DON and DOP). In this project, researchers at the Virginia Institute of Marine Science and the Rosenstiel School of Marine and Atmospheric Sciences will observe the transport of accumulated DOC, DON and DOP during the spring phytoplankton bloom in the NE Atlantic Ocean, the region previously studied in the JGOFS North Atlantic Bloom Experiment. They will track the transport and simultaneous decomposition of both the overwintering and newly-produced DOM as it flows through the NE Atlantic toward a site of bottom water formation to the northeast of the U.K. in the Norwegian Sea. This project will take advantage of an opportunity to participate on a detailed hydrographic survey of the NE Atlantic in spring 2001 aboard the U.K. research vessel RRS CHARLES DARWIN with colleagues from the George Deacon Division of the Southampton Oceanography Centre (SOC), U.K. A principal cruise objective is to calculate volume transports, from which mass transport of DOM can be estimated. While the broad outlines of these processes have now been sketched in, there have been no detailed studies in which DOM transport has been explicitly studied in the relevant hydrographic framework, and none in which simultaneous estimates of underway decomposition have been determined. This study, a collaboration among biogeochemists, microbial ecologists, and physical oceanographers would be the first to provide synoptic data on DOC, DON and DOP concentrations, volume transports and decomposition rates, from which mass transport of DOM components can be assessed.