极地研究

极地研究 ›› 1998, Vol. 9 ›› Issue (1-English): 33-38.

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Features of temperature changes at Barrow of Arctic in the last 400 a

Wang Guo and Zhang Qingsong   

  1. The Institute of Geography, Chineses Academy of Sciences, Beijing 100101, China
  • 出版日期:1948-03-30 发布日期:1948-03-30
  • 通讯作者: Wang Guo

Features of temperature changes at Barrow of Arctic in the last 400 a

Wang Guo and Zhang Qingsong   

  1. The Institute of Geography, Chineses Academy of Sciences, Beijing 100101, China
  • Online:1948-03-30 Published:1948-03-30
  • Contact: Wang Guo

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摘要：

A temperature record from a lake core reveals that it becomes warming at average rate of 0.4 ℃ per century in the past 400 a at Barrow, but it turns cold in the past 200 a. Maximum entropy spectra analysis shows that in the temperature fluctuations there are cycles of 33, 40, 29 a and about 90 a at Barrow. According to statistics and entropy analysis of monthly mean temperature from Barrow Meteorological Observatory in 1921-1994, there are cycles of 4, 6, 14, 16 months and 3, 4, 7, 10 a in the recent temperature change.

关键词: Arctic, Barrow, temperature change, entropy spectra feature

Abstract:

A temperature record from a lake core reveals that it becomes warming at average rate of 0.4 ℃ per century in the past 400 a at Barrow, but it turns cold in the past 200 a. Maximum entropy spectra analysis shows that in the temperature fluctuations there are cycles of 33, 40, 29 a and about 90 a at Barrow. According to statistics and entropy analysis of monthly mean temperature from Barrow Meteorological Observatory in 1921-1994, there are cycles of 4, 6, 14, 16 months and 3, 4, 7, 10 a in the recent temperature change.

Key words: Arctic, Barrow, temperature change, entropy spectra feature