摘要
用美国俄克拉荷马州大学“风暴分析预报中心”(CAPS)开发的 ARPS(Advanced Regional Predic-tion System)非静力中尺度数值模式讨论了美国 VORTEX- 95试验期间的一次飑线过程的触发和维持机制。试验表明 ,地面中尺度汇合线或切变线是此次飑线过程主要的触发系统和重要的维持机制之一 ;对流凝结潜热加热和高低空急流耦合在飑线的发展和维持有重要作用。此外 ,ARPS模式成功地模拟了飑线的 β中尺度结构特征 ,表明该模式对飑线强对流天气系统有较强的模拟能力。
Meso scale ARPS numerical model developed by CAPS of Oklahoma University is used to investigate the mechanisms for initialization and maintenance of a squall line occurred during VORTEX 95 experiment performed in America. It is found that surfae confluent line or shear line are possibly one of the major mechanisms for initialization and maintenance of the squall line. The modeling results also indicate that the heating of convective condense latent energy release and the coupling of upper level jet to low level jet play important roles in the development and maintenance of the squall line. In addition, Some common meso β scale structural characteristics of the squall line are successfully simalated, indicating that ARPS model possesses the capability of simulation of squall line.
出处
《解放军理工大学学报（自然科学版）》
EI
2002年第1期79-85,共7页
Journal of PLA University of Science and Technology(Natural Science Edition)
关键词
飑线过程
数值模拟
动力分析
ARPS模式
squall line
Advanced Regional Prediction System model
numerical simulation
