海洋预报2025，Vol.42Issue(1)：23-31,9.DOI:10.11737/j.issn.1003-0239.2025.01.003
北极东北航道通航窗口计算与分析
Calculation and analysis of the navigational window of the Arctic Northeast Passage
摘要
Abstract
This paper used the sea ice concentration data set released by the National Snow and Ice Data Center to conduct spatiotemporal analysis of sea ice concentration data in the Arctic region from 1979 to 2022;An improved navigation window algorithm based on Dijkstra shortest path algorithm was proposed.The navigation window of the Northeast Passage was calculated,and the navigation channel and period were determined.The key areas affecting the navigability of the Northeast Passage are further analyzed.The results show that:the annual average sea ice concentration in the Arctic region decreased by about 0.18%per year.There were 25 years of navigable windows during 1979-2022.The average start period of navigable windows was late July to early August,and the end period of navigable windows was early and middle October.The cycle of navigable windows changed largely.The key area affecting the navigation period of the Northeast Passage is the middle section.关键词
北极海冰/东北航道/Dijkstra算法/通航窗口Key words
Arctic sea ice/Northeast Passage/Dijkstra's algorithm/navigational window分类
海洋学引用本文复制引用
刘艳花,何亚文,冯都贤,李永恒..北极东北航道通航窗口计算与分析[J].海洋预报,2025,42(1):23-31,9.基金项目
国家自然科学基金(4197060184). （4197060184）
