关键词: 南极;普里兹湾;气候;变化趋势;异常过程

Abstract:

The characteristics of temperature change of Prydz Bay in recent 10 years is analysed based on observational meteorological data from Zhongshan Station and Davis Station since 1989. The results show that the time change trend of monthly mean temperature for the both stations is negative with -0.066℃/a which is opposite to Antarctic mean warming trend. The main feature of seasonal change is most cooling trend appeared in autumn and warming trend in summer. The variation of monthly mean maximum temperature is also warming with time and contrasts with minimum temperature in the both stations. The fluctuation of the temperature of Prydz Bay is very larger with extremity abnormal values of about ±10℃, Such events are closely connected with abnormal positions distribution of Antarctica continent high pressure system and locations of low pressure centers of surrounding polar.