青藏高原热状况特征分析

利用中日亚洲季风机制合作研究计划中的青藏高原自动气象站（AWS）观测资料和相应的常规测站资料，计算分析了拉萨、日喀则、那曲和林芝的大气热量收支及各热力分量的贡献状况，结果表明：高原大气在3－9月热源，10－2月是冷源；各热力分量都存在夏大冬小的现象，来自太阳的短波辐射和地表净辐射各占总供热40％；湍流感热和降水潜热各占供热约10％；辐射加热是高原大气热量的主要来源。

Feature Analysis of Thermal Regime on Tibet Plateau

The atmospheric heat budget and status of thermodynamic variables in Lhasa,Rigeze,Naque and Linzhi are computed and analyzed.The data come from the observations of automatic weather stations (AWS) in Chinese Japan Asian Monsoon Mechanics Cooperative Program and relevant conventional weather stations.The results of analysis shows that lower atmosphere layer on the plateau are heat source from March to September and are cold source from October to February of next year.The radiation heating is important part for all heat on the plateau in which the solar radiation and surface net radiation are 40% respectively and sensible heat and latent heat of precipitation are 10% respectively.