【摘要】 [目的]研究1880～2011年青藏高原及周边地区的气候变化。[方法]基于GISS气温格网资料,采用年距平温度、月距平温度随时间变化规律,滑动t-检验法和小波分析的方法,分析了青藏高原及其邻近地区大气温度变化的周期性和变化的趋势。[结果]近130年来,青藏高原年距平温度、月距平温度均呈上升态势;20世纪90年代以来气温明显偏高,呈现冬季>秋季>春季>夏季的增温态势;温度的增高速度在空间上有差异,在内蒙古西部增高速度最高,四川西部、西藏东部温度增高速度次之,新疆部分地区增长速度最慢;20世纪30年代有突变,小波分析周期主要是10年。[结论]该研究为探讨全球气候变化奠定了基础。更多还原

【Abstract】 [Objective] The research aimed to study climatic change in Qinghai-Tibet Plateau and the surrounding areas from 1880 to 2011.[Method] Based on GISS temperature grid data,by using change rules of the annual and monthly anomaly temperatures,sliding t-test and wavelet analysis,periodicity of the atmospheric temperature change and change tendency in Qinghai-Tibet Plateau and the surrounding areas were analyzed.[Result] Both annual and monthly anomaly temperatures in Qinghai-Tibet Plateau in recent 130 years presented rise tendency.Since the 1990s,temperature rose evidently,and it presented temperature-rise tendency of winter >autumn >spring >summer.Rise velocity of the temperature had spatial difference.Rise velocity of the temperature in west Inner Mongolia was the highest,followed by west Sichuan and east Tibet.Rise velocity of the temperature in some areas of Xinjiang was the slowest.Abrupt change of the temperature happened in the 1930s,and main period of the wavelet analysis was 10 years.[Conclusion] The research laid foundation for discussing global climate change.更多还原