2001年1月1日 · This chapter focuses on air motions over mountainous terrains that are conducive to the formation and spatial distribution of precipitation. It reviews the theories and models of orographic flows. The interaction between flow over mountains and large-scale precipitating weather systems, such as extratropical cyclones, are also presented.

1979年1月1日 · The chapter reviews the meteorological phenomena that are associated with topography. The study of airflow past mountains is complicated by the wide range of scales that must be considered. The ratios of the mountain width to each of the natural length scales are important in determining the physical regime of the flow.

2011年1月1日 · Our focus is on air motions over mountainous terrain that are conducive to the formation and spatial distribution of precipitation. We also consider the interaction between flow over mountains and larger scale precipitating weather systems such as extratropical cyclones.

The theoretical researches on the problem of the disturbance of an atmospheric current flowing over a mountain range, carried on during the last ten years, prove that most of the characteristic observed features can be explained, to a very large extent, by the hydrodynamical theory of internal, small adiabatic perturbations in a stratified ...

Mountains disrupt basic airflows to force ascending air currents and initiate clouds. Clouds are produced when air becomes saturated and water condenses. Air can be brought to saturation by evaporation, by cooling, or by expansion from adiabatic...

2018年3月1日 · The first example simultes airflow over a mountain in a uniform atmosphere which produces only vertical propagating waves, while the second example simulates airflow over a mountain in a non-uniform atmosphere which results in trapped waves.

2020年8月29日 · This chapter considers airflow around mountain systems as a mesoscale atmospheric phenomenon. It presents a nonlinear stationary dimensional theoretical model of the airflow of the Northwest Caucasus Mountains, taking into account characteristics of a real mountain terrain.

2011年12月31日 · The theory suggests that for large mountains light wind conditions (as in the summer in mid-latitudes) will lead to wave breaking just above the mountain, while the stronger winds (e.g., winter...

2018年11月5日 · In a novel modelling framework, we have used high-resolution (kilometre scale) numerical simulations of some of the most complex mountain ranges on Earth to investigate their effects on the atmospheric flow and how these are represented in NWP and climate models.

2020年11月12日 · Three factors determine the behavior of an approaching flow in response to a mountain barrier: •the stability of the air approaching the mountains, •the speed of the air flow approaching the mountains, and •the topographic characteristics of the underlying terrain.