Shelf/Open-Ocean Interactions in the South African Region

南非地区的陆架/公海相互作用

• 批准号: 2149292
• 负责人: Ricardo Matano
• 金额: $ 62.39万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-04-01 至 2025-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2149292&HistoricalAwards=false
• 关键词: Shelf; Open; Ocean; Interactions; South

This study uses process modeling to investigate the impact of the Agulhas Current on the southern African shelves, the connectivity between the circulations in the Agulhas Bank and the southern Benguela upwelling region, and the sensitivity of these shelf regions to climate related changes of the wind forcing. The central hypothesis is that shelf and deep-ocean interactions are modulated by the transit of Agulhas eddies. The project will advance understanding of the impact of these interactions on the Agulhas Bank and extend it to the Benguela region. Understanding shelf and deep-ocean interactions in the southern African region will contribute to the forecast of the impact of climate change on the regional ecosystems and the potential feedbacks that those ecosystems will have on the changing climate.This project uses process-oriented modeling to characterize the shelf and open-ocean interactions between the Agulhas Current, Agulhas Bank (AB), and Southern Benguela Upwelling Region (SBUR) and to evaluate their sensitivity to climate variability and climate change. The investigators hypothesize that the AC controls the thermohaline structure of the AB and that it is the main driver of the circulation in the outer- and middle-shelf regions. Wind stress forcing controls the circulation in the inner shelf as well as the exchanges between the AB and the SBUR. The project will investigate eddy-driven interactions between the AC and the African continent and their effect on mixing and water mass transformations along the AC path. It is anticipated that climate change will increase the impact of shelf/open ocean interactions on both oceanic realms.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这项研究使用工艺建模来研究阿古尔哈斯电流对南部非洲货架的影响，阿古尔哈斯银行和南部班格拉上升流域的循环之间的连通性以及这些架子地区对风力强迫气候相关的敏感性。中心假设是，架子和深海相互作用是由阿古尔哈斯涡流的转运调节的。该项目将促进对这些相互作用对Agulhas银行的影响的理解，并将其扩展到孟加拉地区。 Understanding shelf and deep-ocean interactions in the southern African region will contribute to the forecast of the impact of climate change on the regional ecosystems and the potential feedbacks that those ecosystems will have on the changing climate.This project uses process-oriented modeling to characterize the shelf and open-ocean interactions between the Agulhas Current, Agulhas Bank (AB), and Southern Benguela Upwelling Region (SBUR) and to评估他们对气候变化和气候变化的敏感性。研究人员假设AC控制AB的热盐结构，并且是外部和中架区域中循环的主要驱动力。风应力强迫控制内部架子的循环以及AB和SBUR之间的交换。该项目将研究AC与非洲大陆之间的涡流相互作用及其对沿AC路径混合和水量转化的影响。预计气候变化将增加货架/开放海洋互动对这两个海洋领域的影响。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛的审查标准通过评估来获得支持的。