一次中尺度云团发展时的湿有效能量收支分析  

THE BUDGETS OF THE MOIST AVAILABLE ENERGY FOR A CASE OF MESOSCALE CLOUD CLUSTER

作　　者：吴宝俊[1] 许晨海[1] 刘延英[1] 樊根彦 

机构地区：[1]中国气象科学研究院

出　　处：《高原气象》1995年第4期476-485,共10页Plateau Meteorology

基　　金：八.五国家攻关项目"85-906-08"课题资助

摘　　要：１９９０年８月１日１７∶２２一次伴有暴雨的中尺度云团影响到北京，对其进行了湿有效能量的收支分析。结果表明：（１）中尺度云团在发展期间释放了大量的能量；（２）由于垂直输送和潜热释放对减少了的能量可进行补充，从而使云团维持了较长的时间；（３）地面变压项虽然对能量补充不利，但其量级很小无大影响；（４）水平输送项。In this paper,budgets of the moist available energy for a case of mesoscale cloud cluster accompanied by heavy rainfall influencing Beijing area during 09∶22 14∶00 UTC August 1, 1990 had been diagnostically studied by the use of operational data The results show that (a) During the developed period (12∶00 UTC) of the cloud cluster,a lot of the moist available energy was released In other words,the conversion term was a dominant energy sink (b) Because of both the vertical transport term and the latent heat release supplied the moist available energy to the cloud cluster,it is persisted for a long time In other words, both the terms were dominant energy source (c) The order of surface pressure change term was too small,it almost had not influence on whole situation (d) The orders of both the horizontal transport term and the effective factor change term were larger,they had in some degree influence on whole situation

关 键 词：中尺度云团 湿有效能量收支 能量收支 

分 类 号：P432.1[天文地球—大气科学及气象学]