区丽连,付东洋,刘贝,余果,刘大召

• 1:广东海洋大学电子与信息工程学院
• 2:广东省海洋遥感与信息技术工程技术中心

摘要(Abstract)：

【目的】分析北极海冰时空变化特征,并对其影响因素进行机理研究。【方法】利用不莱梅大学物理研究所提供的基于AMSR-2微波遥感数据ASI(ARTIST-Sea-Ice)海冰密集度(Sea-Ice-Concentration,SIC)数据,分析2013-2019年北极海冰覆盖面积及变化趋势,比较ASI海冰密集度数据与同期美国国家冰雪中心的MASAM2密集度数据对北极海冰面积计算的差异性;利用经验正交函数分析(EOF)方法,对北极海冰密集度的前三个时空模态进行探究;并结合海冰面积的时空变化特征,对气温、海表温度及下行长波辐射进行相关性分析。【结果与结论】在时间尺度上,从2013-2019年,北极海冰密集度呈加速减少趋势,年均北极海冰覆盖面积从9.23×106km~2下降至8.51×106 km~2,年均下降率达1.34%。在空间尺度上,北极中央冰区的海冰覆盖范围总体缩小,在白令海、格陵兰岛西侧巴芬湾、亚欧大陆北部喀拉海等边缘海域海冰面积均呈现快速减少的变化趋势。

关键词(KeyWords)： 北极海冰;海冰密集度;时空变化;北极增暖

Abstract:

Keywords:

基金项目(Foundation): 广东省教育厅重点项目(2019KZDXM019);; 南方海洋科学与工程广东省实验室（湛江）资助项目(ZJW-2019-08);; 广东海洋大学高水平海洋学科团队项目(002026002009);; 广东省研究生学术论坛项目(230420003);; 广东海洋大学2019年“冲一流”学科建设平台项目(231419026)

作者(Author): 区丽连,付东洋,刘贝,余果,刘大召

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