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

合作研究：大西洋东北部溶解有机物的运输、转化和利用

• 批准号: 0095090
• 负责人: Dennis Hansell
• 金额: $ 17.7万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-04-15 至 2003-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0095090&HistoricalAwards=false
• 关键词: Collaborative; Research; Transport; Transformation; Utilization

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.

摘要OCE-0095223和OCE-0095090溶解有机物（DOM）向输出区域的输送过程主要是从几个剖面推断的，这些剖面显示了溶解有机碳（DOC）浓度增加的表面积累和向深度的渗透。 从源区到出口点的流动过程中的分解尚未研究，也没有溶解的有机氮和磷（DON和DOP）的伴随运输。 在该项目中，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观察东北大西洋春季浮游植物水华期间累积的DOC，DON和DOP的运输，该地区以前曾在JGOFS北大西洋水华实验中研究过。 他们将跟踪运输和同时分解的越冬和新产生的DOM，因为它通过东北大西洋流向英国东北部的底层水形成地点。在挪威海。该项目将利用2001年春季在英国参加东北大西洋详细水文调查的机会英国南安普顿海洋学中心（SOC）乔治迪肯分部的研究船RRS查尔斯达尔文号和同事们。一个主要的巡航目标是计算运输量，从中可以估计DOM的质量运输。 虽然这些过程的大致轮廓现在已经勾勒出来，但还没有详细的研究，其中DOM传输已明确研究了相关的水文框架，并没有在进行中的分解的同时估计已被确定。这项研究，海洋地球化学家，微生物生态学家和物理海洋学家之间的合作将是第一个提供天气数据DOC，DON和DOP浓度，体积运输和分解率，从DOM组分的质量运输可以评估。