New Approaches to Characterising the Influence of Eddies in the Southern Ocean

表征南大洋涡流影响的新方法

• 批准号: NE/D009642/1
• 负责人: Emily Shuckburgh
• 金额: $ 32.1万
• 依托单位: British Antarctic Survey
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FD009642%2F1
• 关键词: New; Approaches; Characterising; Influence; Eddies

The waters of the Southern Ocean are dominated by a vast current that circles around the Antarctic continent, known as the Antarctic Circumpolar Current (ACC). The ACC connects together the Atlantic, Pacific and Indian Oceans. It serves an important role in transporting heat, salt, dissolved gases, nutrients and biological species between these ocean basins. The Southern Ocean also plays a critical role in the slow global overturning circulation of the world's ocean. Cold, salty dense water coming all the way from the deep North Altantic arrives in this circulation at the Southern Ocean. Here intense ocean-atmosphere-ice interactions can occur that freshen and warm the water, changing its density, before it continues back northward on its global journey. Understanding the physical processes which determine these ocean circulations is vital to accurately predict future climate. The aim of this project is to investigate some of these processes, in particular those associated with ocean eddies in the flow. What are these eddies? It is familiar to those living in Northern Europe that the prevailing wind direction is typically from west to east. Storms, familiar on weather maps as migrating regions of anomalous low pressure with sizes hundreds of kilometers, interact with this prevailing wind in complex ways. In the Southern Ocean, the analogues of these storms are the ocean eddies, although they are typically much smaller with sizes of tens of kilometers. Just as in the atmosphere, their interaction with the prevailing current, the ACC, is complex. The goal of this project is to better understand this interaction. Processes associated with the eddies are thought to be important in determining the global overturning circulation described above.

南大洋的沃茨主要由一股环绕南极大陆的巨大洋流控制，这股洋流被称为南极绕极流（ACC）。ACC连接大西洋、太平洋和印度洋。它在这些海洋盆地之间输送热量、盐、溶解气体、营养物质和生物物种方面发挥着重要作用。南大洋在世界海洋缓慢的全球翻转环流中也发挥着关键作用。来自北大西洋深处的寒冷、含盐的高密度水通过这种环流到达南大洋。在这里，强烈的海洋-大气-冰的相互作用可以发生，使水变新鲜和温暖，改变其密度，然后继续向北返回其全球旅程。了解决定这些海洋环流的物理过程对于准确预测未来气候至关重要。该项目的目的是调查其中的一些过程，特别是与流动中的海洋涡旋有关的过程。这些漩涡是什么？生活在北方欧洲的人都很熟悉，盛行风的方向通常是从西向东。风暴，在天气图上很常见，是数百公里大小的异常低压的迁移区域，以复杂的方式与这种盛行风相互作用。在南大洋，这些风暴的类似物是海洋漩涡，尽管它们通常要小得多，大小为数十公里。就像在大气中一样，它们与主流ACC的相互作用是复杂的。本项目的目的是更好地理解这种相互作用。与涡旋相关的过程被认为是决定上述全球翻转环流的重要因素。

项目成果

Enhancement of Mesoscale Eddy Stirring at Steering Levels in the Southern Ocean

• DOI: 10.1175/2009jpo4201.1
• 发表时间: 2010-01-01
• 期刊: JOURNAL OF PHYSICAL OCEANOGRAPHY
• 影响因子: 3.5
• 作者: Abernathey, Ryan;Marshall, John;Shuckburgh, Emily
• 通讯作者: Shuckburgh, Emily

Mixed Layer Lateral Eddy Fluxes Mediated by Air-Sea Interaction

海气相互作用介导的混合层横向涡通量

• DOI: 10.1175/2010jpo4429.1
• 发表时间: 2011
• 期刊: Journal of Physical Oceanography
• 影响因子: 3.5
• 作者: Shuckburgh E

Transport and Mixing in Kinematic and Dynamically Consistent Flows

运动学和动态一致流中的传输和混合

• DOI: 10.1175/jas4030.1
• 发表时间: 2007
• 期刊: Journal of the Atmospheric Sciences
• 影响因子: 3.1
• 作者: Shuckburgh E