Negative sea ice-circulation feedback along Arctic marginal ice zones

了解海冰如何与上层大气环流相互作用越来越重要。本文提供资金研究北极边缘冰区（MIZ）上空和周围海冰、表面热通量和表面风应力变化的负反馈过程。在这个负反馈过程中，海冰异常在MIZ的假设，以产生当地的风模式，采取行动，以对抗最初的海冰异常，提供了一个调节机制上的撤退和前进的MIZ每周的时间scales.This工作将量化MIZ本地负反馈过程，并确定其在当代和预计的海冰条件下的影响。在观测和建模环境中进行为期三年的详细研究将实现以下研究目标：1）确定和绘制MIZ中表面风应力对海冰范围异常的响应，2）确定和绘制海冰对由当地海冰异常产生的风应力异常的响应，3）评估海冰-风应力负反馈在观测和耦合模拟中的统计意义，以及4）通过在耦合模型中打开和关闭反馈来确定反馈的效果。该项目将为一名新的年轻调查员提供研究支助，并为一名女研究生和一名女本科生的额外培训提供支助。 该项目还包括对k-12学生的推广。

It is increasingly important to understand how sea ice interacts with the overlying atmospheric circulation. Funds are proided to investigate a negative feedback process over and around the Arctic marginal ice zone (MIZ) involving variability in sea ice, surface heat flux, and surface wind stress. In this negative feedback process, sea ice anomalies in the MIZ are hypothesized to generate local wind patterns that act to counter the initial sea ice anomalies, providing a regulatory mechanism on the retreat and advance of the MIZ on weekly time scales.This work will quantify the MIZ local negative feedback process and determine its effects under contemporary and projected sea ice conditions. A detailed three-year study in observations and modeling environments will realize the following research objectives: 1) determine and map the response of surface wind stress to sea ice extent anomalies in the MIZ, 2) determine and map the sea ice response to wind stress anomalies generated by local sea ice anomalies, 3) evaluate the statistical significance of the sea ice-wind stress negative feedback in observations and coupled simulations, and 4) determine the effects of the feedback by turning it on and off in a coupled model. This project will provide research support for a new, young investigator, as well as support for the additional training of a female graduate student and an undergraduate student. The project also includes outreach to k-12 students.