Flow regimes for major topographic obstacles of China
我国主要地形上空理想定常流的流域分界分析

Major topographic obstacles in China are taken into account as a whole and approximate scales of these topographies are dynamically idealized according to the theoretical results of mountain flow dynamics. For the typical west-east and north-south upstream flows, the questions are focused on the different flow regimes, such as flow-over/flow-around and quasi-geostrophic balanced or not. The results show that main topographies in China can be classified as three types, one is over-flow dominated and quasi-geostrophic balanced, the second is over-flow dominated hut quasi-geostrophic unbalanced, and the third is around-flow dominated and quasigeostrophic unbalanced. In fact, the primary flow characteristics are determined by not only the scales of the topographies but also their shapes and the upstream flow direction. The rationality of the regimes is validated through qualitative analysis of the flow over the Dabie Mountains and Taiwan Mountains which are numerically simulated using a mesoscale model.