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

为研究波弗特环流中大量海洋热量和淡水变化的原因和后果提供了资金，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：？为了研究最近观测到的夏季表层热量和淡水异常是如何在整个冬季和春季被系统保留的，以及与冰盖的关系。量化BG表层热量和淡水收支的时空（季节和年际）变化及其与海冰收支的相互作用。这将通过回答几个观测和动力学问题来完成：冰盖的减少与海洋热量和淡水的变化有什么关系？地表、太平洋和大西洋的水对波弗特环流的热量和淡水平衡和变化有何影响？在多大程度上，最近的变暖和新鲜的信号储存在海洋中，无论是季节性的还是年际的？有多少热量从深海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、动力过程研究和分析新测量背景下的历史数据来研究气候系统的这些方面。

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.