A STUDY OF 1.5-ORDER CLOSURE TURBULENCE MODEL

作     者：邓雪娇 李兴生 许小金 

作者机构：Chinese Academy of Meteorological Sciences Beijing 100081Chinese Academy of Meteorological SciencesBeijing 100081Beijing Institute of MeteorologyBeijing 100081 

出 版 物：《Acta meteorologica Sinica》 (气象学报(英文版))

年 卷 期：1994年第8卷第3期

页      面：305-315页

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

主　　题：1.5-order closure turbulence model planetary boundary layer(PBL) turbulence theory 

摘      要：Based on turbulence theory,a 1.5-order closure turbulence model is *** model incorporating with the ground surface energy budget equation is constructed by means of a vertical one-dimensional(1-D)40-level *** numerical results reveal the 24-h evolution of the clear planetary boundary layer comparing with the Wangara boundary layer data of days 33—*** model also takes into account some physical processes of radiative transfer and baroclinicity,revealing some important characteristics observed in the boundary layer,especially for the evolution of the mixed layer and low-level *** calculated results are in good agreement with the observational data. On the other hand,we also run the high-resolution model of the planetary boundary layer in the Mesoscale Model Ver- sion 4(MM4)with the same physical processes and initial *** results show that the high-resolution model can not reveal those important characteristics as the 1.5-order closure model *** general,it is shown that the 1.5-or- der closure turbulence model based on turbulence theory is better in rationality and reality.