Impacts of Mesoscale Processes on Biogeochemical Fluxes in the North Atlantic: Basin-Scale Eddy-Resolving Simulations

中尺度过程对北大西洋生物地球化学通量的影响：盆地尺度涡旋解析模拟

• 批准号: 0097287
• 负责人: Dennis McGillicuddy
• 金额: $ 35万
• 依托单位: Woods Hole Oceanographic Institution
• 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: 2001-03-15 至 2006-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0097287&HistoricalAwards=false
• 关键词: Impacts; Mesoscale; Processes; Biogeochemical; Fluxes

Prior modeling efforts have demonstrated a dramatic shift in nutrient transport fluxes as resolution was increased from coarse scales (1.6') to the eddy resolving case (0.1'). Whereas coarse resolution models suggest the dominance of convective and diffusive nutrient supply, higher resolutions showed that eddy-induced upwelling was important. For this reason, the principal investigator plans to run a five-component biogeochemical model at an eddy-resolving spatial resolution of 0.1' to test the following two hypotheses: (1) the primary impact of mesoscale eddies on upper ocean ecosystems is the supply of inorganic nutrients through vertical transport processes, and (2) below the euphotic zone, the primary influence of mesoscale eddies on biogeochemical cycling is horizontal transport of dissolved materials. Understanding gained from these modeling studies will be used to guide the development of parameterizations for mesoscale biogeochemical processes to permit their inclusion in global ocean circulation models.

先前的模拟工作已经证明，随着分辨率从粗尺度（1.6“）增加到涡解情况（0.1”），营养物输送通量发生了显著变化。 而粗分辨率模型表明对流和扩散营养供应的优势，更高的分辨率表明，涡引起的上升流是重要的。 因此，主要研究者计划以0.1“的涡流分辨空间分辨率运行五组分地球化学模型，以测试以下两个假设：（1）中尺度涡旋对上层海洋生态系统的主要影响是通过垂直输送过程提供无机营养物，（2）真光层以下，中尺度涡旋对海洋地球化学循环的主要影响是溶解物质的水平输送。 从这些模拟研究中获得的理解将用于指导中尺度海洋地球化学过程参数化的发展，以便将其纳入全球海洋环流模型。