摘要
本文设计了一个加地形并含详细边界层参数化方案的十三层有限区域细网格模式，并对１９８３年４月２８日冷锋后方、大别山东侧干锋触发形成的近似垂直于冷锋的飑线过程进行了模拟。通过和无地形模式模拟结果的比较，表明区域地形的诱发作用是大别山东侧一类飑线形成的可能原因。文中还模拟了冷区飑线的热力、动力结构，其主要特征和观测研究的结果是一致的。
A limited-area fine-mesh thirteen-layer numerical model is designed, which has topography and detailed boundary layer parameterization. The squall line behind cold front is simulated by the model. It was triggered by dry front at the east side of the Dabie mountain on April 28, 1983. After comparing the simulation results of model with without topography it is seen that the induced regional topography may be the mechanism of the formation for the squall line on the east side of the Dabie mountains. The thermodynamic and dynamical structures of the squall line in cold area are simulated by the model. Their principal features are consistent with observations.
出处
《大气科学》
CSCD
北大核心
1994年第6期710-719,共10页
Chinese Journal of Atmospheric Sciences
基金
国家自然科学基金
关键词
地形
飑线
数值模拟
冷锋
topography
lateraldetaining action
dry front
squall line
numerical simulation.
