地形对冷空气的影响

计算物理 ›› 1992, Vol. 9 ›› Issue (S2): 799-805.

地形对冷空气的影响

张雷鸣¹, 赵鸣²

中国科学院大气物理研究所, 北京 100029;
2. 南京大学大气科学系, 210008

收稿日期:1992-04-15 出版日期:1992-12-31 发布日期:1992-12-31
基金资助:
国家自然科基金资助项目

TERRAIN EFFECT ON COLD-AIR

Zhang Leiming¹, Zhao Ming²

1. Institute of atmospheric physics, Academia sinica, Beijing, 199929;
2. Department of atmospheric science Nanjing University, 210008

Received:1992-04-15 Online:1992-12-31 Published:1992-12-31

摘要/Abstract

摘要： 本文设计了一个数学模式,用计算数学的方法模拟了一个中尺度的冷空气过山情形,对冷空气爆发后山地对各气象要素的影响进行了模拟计算。模式考虑了太阳短波辐射,地面及大气长波辐射,土壤热通量,大气中水汽、热量及动量通量的扩散与传输,科里奥利力的南北变化等物理过程,比较真实的得到冷空气爆发后风场的改变,大幅度降温,通量的增大及气压的升高等合理的物理现象。为气象预报及复杂地形下的中尺度天气过程研究提供了可靠的手段和依据。

关键词: 地形, 冷空气, 数值方案

Abstract: A mathematical model was developed to simulate the terrain effect on meterology parameter when cold-air flow passing over a mountain terrain. The solar short-wave radiation, ground and atmolphere long-wave radiation, soil heat flux, the diffusion and transport of water vapor, heat and momentum fluxes in the atmosphere' and the Coriolis parameter change with latitude were considered in the model. The resonable phenomena were obtaioned, such as, wind field change, temperature decrease, the abrupt increase of flux and pressure increase etc. The model provides a method and basis for weather forcast and the reseaech of mesoscale processes over complex terrain.

Key words: terrain, cold-air, numerical model

张雷鸣, 赵鸣. 地形对冷空气的影响[J]. 计算物理, 1992, 9(S2): 799-805.

Zhang Leiming, Zhao Ming. TERRAIN EFFECT ON COLD-AIR[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 1992, 9(S2): 799-805.

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