作　　者： ; ;

机构地区： 中山大学环境科学与工程学院大气科学系

出　　处： 《中山大学学报论丛》 1993年第1期150-157,共8页

摘　　要： 本文利用华南实际探空资料计算了新假相当位温的时空分布,结果表明,水滴冻结潜热项在大气中存在零贡献高度,它对θ_se的净贡献,平均达3.2K,最大达3.9K,加上水质物比热的贡献,两项台计通常可达5.2K,最大达6.7K,两项热量都可增加大气中的不稳定性,增加大气的潜在对流深度,增加对流系统的净浮力,使穿透对流能够到达视高度,这种温度可用于对流和积云发展的业务应用和理论研究。 This paper utilizes the real sounding data of the south China to comp- ute the space-time distribution of the new potential pseudo-equivalent temperature. The results show that the term of latent teat of waterdroplets freezing exists a zero-contribution height in the atmosphere; the net contribution of it on θ_sc is 3. 1K in average, with a maximum of 3.8K, with the contribution or specific heat of the water substances, the total increment is 5.1 K in ordinary, with a maximum of 6.4K, both the terms heat is able to increase the atmospheric latent instability, potential convection depth and net bouyancy force of convection system, and the atmospheric apparent heights which penetrative convection can reach. This temp- erature can be used in the both operational application and theoretical research on the convection and the cumulus development.

关 键 词： 假相当位温 水滴冻结潜热 广州探空平均温度廓线

领　　域： [文化科学] [文化科学]