程瑶,刁一娜

• 1:中国海洋大学海洋与大气学院

摘要(Abstract)：

本文采用经验正交函数分析、线性回归、相关性分析等方法对1982—2017年乌拉尔阻塞(UB)与巴伦支-喀拉海(BKS)海冰季节特征及其相关关系进行分析发现,UB活动频率与BKS海冰密集度均有较强的季节性周期变化,且不同季节BKS海冰与UB相关性不同。进一步对秋季UB与冬季BKS海冰的相关关系分析发现:秋季UB频率在BKS及其周边区域增多的年份里,秋季到冬季结冰期内,局地BKS海域500hPa位势高度持续增加、低层大气温度持续升高;同时,秋季BKS海域海表面温度异常增暖持续至冬季。上述海洋、大气条件不利于结冰期BKS海冰的冻结,因此这些年份里冬季BKS海冰密集度减少。此外,秋季BKS海冰减少也伴随着冬季UB高纬度频率增加。

关键词(KeyWords)： 巴伦支-喀拉海海冰;乌拉尔阻塞;季节特征;年际变化;相关性分析

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划项目(2019YFA0607002)资助~~

作者(Author): 程瑶,刁一娜

DOI: 10.16441/j.cnki.hdxb.20200007

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