Collaborative Research: The Norrona Project: An International Collaboration for Sustained Studies of the Meridional Overturning Circulation Between Denmark, the Faroes and Iceland

合作研究：诺罗纳项目：丹麦、法罗群岛和冰岛之间经向翻转环流持续研究的国际合作

• 批准号: 0452274
• 负责人: Charles Flagg
• 金额: --
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2011-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0452274&HistoricalAwards=false
• 关键词: Collaborative; Research; Norrona; Project; International

OCE-0452970/Rossby/FlaggThe global meridional circulation, the transformation of surface waters into deep waters in limited areas and the presumed broad upwelling of deep waters throughout much of the rest of the ocean, is extremely sensitive to climate changes. The deepest waters originate principally in the Weddell Sea and in the Nordic Sea, in both cases as dense water overflows. The Nordic Seas overflow is replaced by warm water flowing north, principally between Shetland, the Faroes and Iceland, a flow of exceptional importance for the mild climate enjoyed by central and northern Europe.It is proposed to establish a program to monitor the exchange of waters between the North Atlantic and the Nordic Seas across the Shetland- Faroe-Iceland ridge. The Scotland-Faroe-Iceland ridge is the natural chokepoint for monitoring the strength of the MOC. A ferry, the Norrona, operated out of the Faroes, maintains year-round weekly service to Iceland and to northern Denmark. The ferry also stops in the Shetland and in Norway. Thus the vessel traverses all north-flowing warm water between Iceland and Scotland weekly. We propose to equip the vessel with an acoustic Doppler current profiler (ADCP) to measure currents as it operates between these ports. Repeat sampling of currents allows for accurate estimates of transport, and hence allow to discern trends in transport. The high-resolution horizontal sampling allows detailed studies of the spatial and dynamical properties of the currents crossing the ridge. This program is designed to address growing societal concerns in the US and Europe about the stability of warm water transport to high latitudes. Displays of the data gathering system will be maintained onboard for public view and education.

OCE-0452970/Rossby/Flagg 全球经向环流、有限区域的地表水向深水的转变以及在海洋其余大部分地区推测的深水的广泛上升，对气候变化极其敏感。最深的水域主要起源于威德尔海和北欧海，在这两种情况下，都是浓水溢出。北欧海的溢流被北流的温水所取代，主要是在设得兰群岛、法罗群岛和冰岛之间，这股水流对于中欧和北欧的温和气候极为重要。建议建立一个监测水域交换的计划横跨设得兰群岛-法罗群岛-冰岛海岭，位于北大西洋和北欧海之间。苏格兰-法罗-冰岛山脊是监测MOC强度的天然咽喉要道。诺罗纳号 (Norrona) 渡轮在法罗群岛运营，全年每周提供前往冰岛和丹麦北部的服务。该渡轮还停靠设得兰群岛和挪威。因此，该船每周都会穿越冰岛和苏格兰之间所有向北流动的温水。我们建议为船舶配备声学多普勒电流剖面仪 (ADCP)，以测量在这些端口之间运行时的电流。 对电流的重复采样可以准确估计传输，从而可以辨别传输趋势。高分辨率水平采样可以详细研究穿过山脊的水流的空间和动力学特性。 该计划旨在解决美国和欧洲社会对高纬度地区温水运输稳定性日益增长的担忧。数据收集系统的显示器将保留在船上，以供公众观看和教育。