Collaborative Research: Impact of Storm Activity on Recent Changes in Arctic Sea Ice Mass Balance

合作研究：风暴活动对北极海冰质量平衡近期变化的影响

• 批准号: 1023592
• 负责人: Xiangdong Zhang
• 金额: $ 78.36万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2018-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1023592&HistoricalAwards=false
• 关键词: Collaborative; Research; Impact; Storm; Activity

This project is to investigate impacts of changes in storm track dynamics on the recent rapid reduction in Arctic sea ice extent and volume. The increase of storm intensity and frequency result in enhanced high-frequency synoptic-scale variations and feedbacks in the Arctic climate system, and may make an integrative contribution to the basin-wide sea ice reduction. The project studies build upon previous work, and combine model simulations with satellite products and in situ observations to integrate and delineate physical causes of sea-ice mass balance changes in the context of storm-induced air-ice-sea interactions. This research will bridge synoptic-scale weather activities and large-scale climate variability and changes. The expected outcome includes assembled schematics linking storm-induced synoptic-scale variation with recently observed rapid loss of Arctic sea ice mass. Changes in sea ice concentration/extent, thickness/volume, and heat budget terms at the air-ice-sea interface that follow the motion of identified storms will be compiled. The project also has important broader impacts across the scientific community and in the general public. A Ph.D. graduate student will be trained to join the next generation of climate researchers. The project outcome will be integrated into graduate, undergraduate, and K-12 student lectures, and aid policymakers to make wiser and more economical decisions.

该项目旨在调查风暴路径动力学变化对近期北极海冰范围和体积迅速减少的影响。风暴强度和频率的增加导致北极气候系统高频天气尺度变化和反馈增强，可能对全流域海冰减少做出综合贡献。该项目研究建立在先前工作的基础上，并将模型模拟与卫星产品和现场观测相结合，以整合和描述风暴引起的空气-冰-海相互作用背景下海冰质量平衡变化的物理原因。这项研究将把天气尺度的天气活动和大规模的气候变率和变化联系起来。预期结果包括将风暴引起的天气尺度变化与最近观察到的北极海冰质量快速损失联系起来的组装示意图。将汇总随着已识别风暴的运动而发生的海冰浓度/范围、厚度/体积以及空气-冰-海界面处的热收支项的变化。该项目还在科学界和公众中产生了更广泛的重要影响。博士学位研究生将接受培训，加入下一代气候研究人员。该项目成果将融入研究生、本科生和 K-12 学生的讲座中，并帮助政策制定者做出更明智、更经济的决策。