区域地形影响下冷锋后飑线的数值模拟

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。

The Numerical Simulation of the Squall Line behind Cold Front Affected by the Regional Topography

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.