本世纪青藏高原气候的三次突变及与天文因素的相关  

CLIMATE ABRUPT CHANGE IN THE QINGHAI- XIZANG PLATEAU IN RECENT CENTURY AND ITS RELATION TO ASTRONOMICAL FACTORS

作　　者：汤懋苍[1,2] 白重瑗[1,2] 冯松[1,2] 蔡英[1,2] 

机构地区：[1]中国科学院兰州高原大气物理研究所 [2]中国科学院兰州冰川冻土研究所

出　　处：《高原气象》1998年第3期250-257,共8页Plateau Meteorology

基　　金：中科院"冰冻圈基础研究"的特别经费

摘　　要：用给出的划分气候阶段的标准对本世纪高原的气温、降水和季风的阶段性变化进行了分析，发现本世纪高原气候在２０年代初、５０～６０年代和８０年代初发生了三次突变，与北半球的气候变化一致。高原气温突升数年后我国和北半球温度突升，接着高原季风增强，高原“季风多雨区”变湿，“季风少雨区”变干，反之则相反。进一步分析表明，地球自转速度和太阳黑子周期长度的变化对高原及北半球本世纪气候的突变和阶段性变化起着重要的作用。The analysis on the air temperature,precipitation and monsoon in the Qinghai-Xizang Plateau in recent century shown that abrupt climate change were occurred in the early 1920s,1960s(or 1950s) and early 1980s, which coincide with the abrupt climate change in the northern hemisphere. Several years after air temperature abrupt rising in the Qinghai-Xizang Plateau, the air temperature in China and northern hemisphere were abrupt rising, which cause the strength of plateau monsoon,then causing the “monsoon wet(dry) region”become wetter(drier),and vice versa. Further analyses show the variation of earth rotation rate and sunspot cycle length have important role on the climate abrupt change in the Qinghai-Xizang Plateau.

关 键 词：青藏高原 气候突变 地球自转 太阳黑子 周期长度 

分 类 号：P461.1[天文地球—大气科学及气象学] P463.1