【摘要】 利用改进后的大气环流谱模式，进行长时间积分，模拟青藏高原积雪的年际变化。分别对模拟结果的多雪年和少雪年夏季温度场进行分析，结果表明：青藏高原冬春多雪年，我国北方大部分地区夏季气温比常年低，而南方地区夏季气温比常年偏高，少雪年则结论相反。同时结合历史实况资料的分析，可以看出东北夏季低温易发生在青藏高原多雪年，而长江中下游及南方地区夏季低温与青藏高原积雪异常的关系不明显。更多还原

【Abstract】 In this paper,an improved spectral general circulation model is used to simulate the snow cover variations over Qinghai-Xizang Plateau. The air temperature is studied and the results show that when the Plateau snow cover is heavier than normal,the air temperature becomes lower over the areas of the northern part of China in summer,while higher over the southern China. When snow cover is poor,the result is opposite. From the historical climatic data and the simulated data we can see that low temperature damage in summer in north-east of China often occurs when the Plateau snow cover is heavier in winter and spring and that the relationship between low temperature damage in southern China and the Plateau snow cover is not obvious.更多还原