利用1994-1996年在藏北高原五道梁所观测得到的地面能量收支资料,结合同期的大气环流进行了分析研究。结果表明:高原北部地面加热场强度的变化与高原西部相似,而与高原主体东半部的变化相反;冬季前期11月的地面积雪过程对决定整个冬季地面加热场的性质具有重要的意义;高原冬季地面热状况的异常,引起夏季加热场的异常,这可能是造成大气环流异常的原因之一,从而影响我国的气候环境,因此对高原地面加热场的监测可以为短期气候预测提供依据。

The relationship between surface heating fields and atmosphere general circulation in the corresponding period are analyzed by using the surface energy budget observed at Wudaoliang over Northern Qinghai-Tibet Plateau. The results show that the variation of surface heating fields in Northern Plateau are similar to the variation in Western Plateau, but it is different to thevariation in Eastern Plateau. The processes of surface snow cover in November have important significance to decide the properties of surface heating fields. The anomaly of surface heating field in winter cause the anomaly of surface heating field in summer may be one of reasons to cause the anomaly of atmosphere general circulation. Therefore, monitoring surface heating fields could provide basis for the climatic forecast of short period.