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.

提供资金来调查波弗特环流中海洋热量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：？研究最近观察到的夏季表层热量和淡水异常如何被系统保留在整个冬季和春季以及与冰盖的关系，以及？量化 BG 表层热量和淡水预算的空间和时间（季节性和年际）变化及其与海冰预算的相互作用。这将通过回答几个观测和动力学问题来完成：冰盖下降与海洋热量和淡水变化有何关系？表层、太平洋和大西洋水域如何影响波弗特环流的热量和淡水平衡和变化？最近的变暖和清新信号在海洋中储存的程度如何，无论是季节性还是年际变化？有多少热量从更深的水域传输到海洋表面和冰盖？主要研究人员打算通过分析最近的海洋和冰测量、动力学过程研究以及新测量背景下的历史数据分析来研究气候系统的这些方面。