极地研究

极地研究 ›› 1998, Vol. 10 ›› Issue (1): 14-19.

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400年来北极巴罗角的温度变化特征

王国;张青松   

  • 出版日期:1998-03-30 发布日期:1998-03-30

FEATURES OF TEMPERATURE CHANGE OVER THE LAST 400 YEARS AT BARROW,ARCTIC

  • Online:1998-03-30 Published:1998-03-30

PDF (PC)

1358

被引次数

21

摘要：

近４００年湖泊岩芯温度记录揭示，巴罗地区总的变化趋势是升温，平均升温速率为每百年０．４℃，但近２００年呈降温趋势。熵谱分析表明，近代巴罗地区温度波动存在３３年、４０年、２９年周期和９０年左右的世纪周期；１９２１～１９９４年巴罗气象台逐月温度资料统计分析和熵谱分析表明，现代巴罗温度变化有４个月、半年、１４个月、１６个月、３年、４年、７年和１０年周期。

关键词: 北极,巴罗,温度变化,熵谱特征

Abstract:

A temperature record from a lake core reveals that it is warming at average rate of 0 4℃ per century generally over the past 400 years at Barrow, but it is colding over the past 200 years. Maximum entropy spectra analysis shows temperature fluctuation cycles of 33, 40, 29, and about 90 years at Barrow. According to statistics and entropy analysis of monthly mean temperature from Barrow Meteorological Observatory in 1921-1994, there are cycles of 4 months, 6 months, 14 months, 16 months, 3 year, 4 years, 7 years and 10 years in the recent temperature change.