Manifestations and Consequences of a Changing Climate in the Arctic Ocean's Beaufort Gyre

北冰洋波弗特环流气候变化的表现和后果

• 批准号: 0806306
• 负责人: Andrey Proshutinsky
• 金额: $ 54.99万
• 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: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0806306&HistoricalAwards=false
• 关键词: Manifestations; Consequences; Changing; Climate; Arctic

Funds are provided to investigate the causes and consequences of large ocean heat and freshwater changes in the Beaufort Gyre with the goal of understanding ocean drivers of Arctic sea-ice and climate change. Two objectives will be addressed:? To investigate how recently observed summertime surface-layer heat and fresh-water anomalies are retained by the system throughout winter and spring and the relationship to ice cover, and ? To quantify spatial and temporal (seasonal and interannual) changes in the surface-layer heat and fresh-water budgets of the BG and their interaction with the sea-ice budget.This will be accomplished by answering several observational and dynamical questions: How does the declining ice cover relate to changes in ocean heat and fresh water? How do the surface, Pacific and Atlantic waters contribute to the heat and fresh-water balance and change in the Beaufort Gyre? To what extent are recent warming and freshening signals stored in the ocean, both seasonally and interannually? How much heat is transported from deeper waters to the ocean surface and ice cover? The principal investigators intend to investigate these aspects of the climate system by analysis of recent ocean and ice measurements, dynamical process studies, and analysis of historical data in the context of new measurements.

提供了资金来研究博福特陀螺仪中巨大的海热和淡水变化的原因和后果，目的是了解北极海冰和气候变化的海洋驱动因素。 将解决两个目标：为了研究最近观察到的夏季表面层热和淡水异常，整个冬季和春季都保留了该系统以及与冰盖的关系，以及？量化BG的表面热量和淡水预算的空间和时间（季节性和年际）变化，以及它们与Sea-Ice预算的互动。这将通过回答几个观察性和动态​​性问题来实现：下降的冰覆盖与海热和淡水的变化有何关系？地表，太平洋和大西洋水域如何促进Beaufort Gyre的热量和淡水平衡？最近，季节性和一生都在海洋中存储了最近的变暖和鲜明信号？从较深的水域和冰盖传输了多少热量？主要研究人员打算通过分析新测量的情况下的海洋和冰测量，动力学过程研究以及对历史数据的分析来研究气候系统的这些方面。