نتایج جستجو برای: clear air turbulence
تعداد نتایج: 430405 فیلتر نتایج به سال:
The variation of wind-optimal transatlantic flight routes and their turbulence potential is investigated to understand how upper-level winds and large-scale flow patterns can affect the efficiency and safety of long-haul flights. In this study, the wind-optimal routes (WORs) that minimize the total flight time by considering wind variations are modeled for flights between John F. Kennedy Intern...
An introduction to random ßuctuations in the refractive index of air and their effect on optical images, including the impact on MTF. The aim of these notes is to study, in an introductory way, random ßuctuations in the refractive index of air and their effect on optical images. Image quality is measured by a modulation transfer function (MTF) that characterizes the turbulent viewing, and also ...
The air–sea exchange of heat is mainly controlled by the molecular diffusive layer adjacent to the surface. With an order of magnitude difference between the kinematic viscosity and thermal diffusivity of water, the thermal sublayer is embedded within its momentum analog: the viscous sublayer. Therefore, the surface heat exchange rates are greatly influenced by the surface kinematics and dynami...
Urban boundary layers (UBLs) can be highly complex due to the heterogeneous roughness and heating of the surface, particularly at night. Due to a general lack of observations, it is not clear whether canonical models of boundary layer mixing are appropriate in modelling air quality in urban areas. This paper reports Doppler lidar observations of turbulence profiles in the centre of London, UK, ...
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