【摘要】 讨论了高原地区四季划分的标准,认为若以日平均气温作为指标,应比适用于我国东部的"张宝标准"低5℃,根据铁路沿线7个气象站40年资料和温泉气象站6年资料,划出了各站四季的开始日期,发现格尔木和拉萨有短暂的夏季,高原主体上是"常年无夏,春秋相连",仅昆仑山口附近是"全年皆冬,春风不渡"。高原上温度随纬度的变化与我国东部平原相似,也是冬季梯度大,夏季小;逆温层厚度以柴达木盆地为最厚,向南逐渐变薄。更多还原

【Abstract】 We discussed the standard of marking off the four seasons in the Qinghai\|Xizang Plateau, and we think if using the daily average temperature as the index, we should reduce the standard of Zhangbaokun by 5℃ which fits the East China. We mark off the beginning date of the four seasons according to 40 year data of the seven meteorology stations and Wenquan data of 6 years. It found that Golmud and Lhasa have transitory summer, but the main body of the Plateau has no summer between spring and autumn. The area near the mouth of Kunlun mountain has only winter. The temperature varying with the latitude in the Plateau is similar to that in the Plain of East China, The temperature gradient is big in winter and small in summer. The inversion layer in Chaidamu basin is the thickest, which become gradually thinner toward south.更多还原