极地研究2017，Vol.29Issue(4)：506-512,7.DOI:10.13679/j.jdyj.2017.4.506
冬春季北极海冰的变化特征及其与西北太平洋热带气旋活动的关系探讨
CHARACTERISTICS OF WINTER-SPRING ARCTIC SEA-ICE AND ITS RELATIONSHIP WITH TROPICAL CYCLONE IN THE NORTHWEST PACIFIC
摘要
Abstract
The spatial and temporal characteristics of Arctic sea ice are studied using the monthly data for sea-ice concentration from the Hadley Center, NCEP/NCAR reanalysis data and best-track data from the Regional Specialized Meteorological Center (Tokyo) Typhoon Center of the Japan Meteorological Agency from 1977 to 2011. The relationship between the winter-spring sea-ice variation and tropical cyclone in the Northwest Pacific is discussed. It is found that the variation of winter-spring sea ice in the Arctic hasobvious decadal changes and oscillated with a period of 3—4 years from 1965 to 2004. There were significant changes in sea ice in the late 1960s and early 1970s. The connection between sea-ice anomalies and tropical cyclone is more marked in September than in other months. There is a positive correlation between winter-spring sea ice and tropical-cyclone strength. There is a strong negative correlation between winter-spring sea ice and the Western Pacific Subtropical High. When there is more (less) winter-spring sea ice than average, the summer 500hPa geopotential height is lower (higher) than usual in eastern North American, Iceland, the North Pacific and medium-low latitudes. A persistent relevance between winter-spring sea ice and the north-ern-hemisphere atmospheric circulation is recognized in the following typhoon season.关键词
北极海冰/热带气旋/西太平洋副热带高压/持续相关Key words
Arctic sea ice/tropical cyclone/Western Pacific Subtropical High/persistentrelevance引用本文复制引用
高清清,邬惠明,朱天懋,徐常三,曹兵..冬春季北极海冰的变化特征及其与西北太平洋热带气旋活动的关系探讨[J].极地研究,2017,29(4):506-512,7.基金项目
国家海洋局东海分局青年科技基金(201314、201624)、卫星海洋环境动力学国家重点实验室开放课题(SOED1402)资助 （201314、201624）
