极地研究

极地研究 ›› 2006, Vol. 17 ›› Issue (2-English): 136-141.

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Research on changes and circulations of sea-ice in Eurasian in recent 50 years

 Dong Xinning1 and Fang Dexian2,3   

  1. 1 Chongqing Climate Center, Chongqing 401147, China;
    2 Key Laboratory of Measosoale Severe Weather Ministry of Education Nanjing University, Nanjing 210093, China;
    3 Chongqing Meteorological Office, Chongqing 401147, China
  • 出版日期:1956-06-30 发布日期:1956-06-30
  • 通讯作者: Dong Xinning

Research on changes and circulations of sea-ice in Eurasian in recent 50 years

 Dong Xinning1 and Fang Dexian2,3   

  1. 1 Chongqing Climate Center, Chongqing 401147, China;
    2 Key Laboratory of Measosoale Severe Weather Ministry of Education Nanjing University, Nanjing 210093, China;
    3 Chongqing Meteorological Office, Chongqing 401147, China
  • Online:1956-06-30 Published:1956-06-30
  • Contact: Dong Xinning

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摘要：

Using the monthly 1°×1° sea-ice concentration data of Hadley center and the monthly NCEP geopotential height data from January 1953 to February 2003, temporal and spatial changing characters of sea-ice are examined. The results show almost all of the sea-ice of eight regions was decreasing, especially all s easons in Europe.But in Asia part, those display some increasing trends in spri ng and winter. Abrupt times of sea-ice in Europe were at end of 1970's and in Asia the times in summer/fall (spring/winter) were at end of 1980's.

关键词: sea-ice, trend, Mann-Kendall, difference height field

Abstract:

Using the monthly 1°×1° sea-ice concentration data of Hadley center and the monthly NCEP geopotential height data from January 1953 to February 2003, temporal and spatial changing characters of sea-ice are examined. The results show almost all of the sea-ice of eight regions was decreasing, especially all s easons in Europe.But in Asia part, those display some increasing trends in spri ng and winter. Abrupt times of sea-ice in Europe were at end of 1970's and in Asia the times in summer/fall (spring/winter) were at end of 1980's.

Key words: sea-ice, trend, Mann-Kendall, difference height field