Influence of winter sea-ice motion on summer ice cover in the Arctic

Polar research

Yohei Tanaka¹  Hajime Yamaguchi¹  Noriaki Kimura²  Akira Nishimura³ 

[1] Graduate School of Frontier SciencesUniversity of Tokyo, 5-1-5 Kashiwanoha Kashiwa 277-8561, Japan;Graduate School of Frontier SciencesUniversity of Tokyo, 5-1-5 Kashiwanoha Kashiwa 277-8561, JapanCorrespondence;School of EngineeringUniversity of Tokyo, 5-1-5 Kashiwanoha Kashiwa 277-8561, Japan

关键词: Sea ice;    Arctic;    satellite remote-sensing;    interannual variability;    AMSR-E data;   

DOI  :  10.3402/polar.v32i0.20193

学科分类：自然科学（综合）

来源: Co-Action Publishing

【 摘 要 】

Summer sea-ice cover in the Arctic varies largely from year to year owing to several factors. This study examines one such factor, the relationship between interannual difference in winter ice motion and ice area in the following summer. A daily-ice velocity product on a 37.5-km resolution grid is prepared using the satellite passive microwave sensor Advanced Microwave Scanning Radiometer—Earth Observing System data for the nine years of 2003–2011. Derived daily-ice motion reveals the dynamic modification of the winter ice cover. The winter ice divergence/convergence is strongly related to the summer ice cover in some regions; the correlation coefficient between the winter ice convergence and summer ice area ranges between 0.5 and 0.9 in areas with high interannual variability. This relation implies that the winter ice redistribution controls the spring ice thickness and the summer ice cover.

【 授权许可】

CC BY-NC