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。
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.
出处
《极地研究》
CAS
CSCD
1998年第1期11-16,共6页
Chinese Journal of Polar Research
基金
国家自然科学基金
中国科学院特别资助
关键词
北极
巴罗
温度变化
熵谱特征
Arctic,Barrow,temperature change,entropy spectra feature,400 years.
