【摘要】 利用中山站 1 989年建站以来和澳大利亚戴维斯站同期气象资料 ,分析了普里兹湾地区短期气候变化过程及其特征。结果表明 ,该地区温度变化存在明显的降温倾向 ,两站降温趋势均为 - 0 .0 66℃ /a ,其结果与整个南极地区温度变化趋势相反。降温倾向的主要特点是月平均温度以秋季下降幅度最大 ,夏季则为升温 ,最高温度存在升温倾向 ,最低温度呈现降温趋势。该地区月平均温度波动很大 ,极端异常过程中月平均温度偏高或偏低达到 1 0℃左右 ,与南极大陆地面高压和绕极低压中心位置及范围的异常分布关系密切。更多还原

【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.更多还原