1985-2013年南极长城站气温变化研究

Study on the Temperature Changes at the Great Wall Station in Antarctica from 1985 to 2013

为研究南极长城站的气温变化特征和南极半岛西北部气温的长期演变,文章采用小波变换的方法对长城站1985年建站以来28年的气温季均值进行分析。通过研究其实部和方差变化来研究其周期震荡的时间尺度。发现不同的季节,周期性差别较大。有的季节其较短的周期较其他季节显著;有的季节其较长周期更为明显;有的周期甚至可以影响其他相邻的季节。并通过CORREL相关关系的研究,发现长城站气温多年月平均值与气压、湿度之间存在显著的负相关关系。

In order to study the characteristics of temperature changes at the Great Wall Station in Antarctica and the long-term evolution of temperature in the northwest of the Antarctic peninsula, the paper uses the wavelet transform method to analyze the seasonal mean temperature of the Great Wall Station in 28 years since its establishment in 1985. The time scale of periodic oscillation is studied by studying the changes of real part and variance. It is found that the periodicity varies greatly in different seasons. Some seasons have shorter cycles than others;in some seasons, the longer cycle is more obvious;some cycles can even affect other adjacent seasons. Through the study of CORREL correlation, it is found that there is a significant negative correlation between the multi-year monthly average temperature and atmospheric pressure and humidity at the Great Wall Station.