Vertical Velocity Fluctuations in a Nocturnal Low-Level Jet
نویسندگان
چکیده
منابع مشابه
Nocturnal Low-Level Jet over a Shallow Slope
A simple theory is presented for a nocturnal low-level jet (LLJ) over a planar slope. The theory extends the classical inviscid inertialoscillation model of LLJs to include upand downslope motion in the boundary layer within a stably stratified environment. The particular scenario considered is typical of LLJs over the Great Plains of the United States: southerly geostrophic wind over terrain t...
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Simulating the correct evolution of the nocturnal boundary layer (NBL), also often referred to as the stable boundary layer, is a challenge for any numerical model, since the NBL is influenced by a variety of sub-grid scale phenomena (Lenschow et al. 1988). These phenomena include propagating gravity waves, stationary waves that are fixed with respect to the terrain, Kelvin-Helmholtz waves, and...
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One of the world's major mineral dust source regions lies along the border between Iran and Afghanistan. In this studyit is hypothesized that a low-level jet may play in role in generating the intensity of this source region. The presence of alow-level jet east of the Seistan mountains is documented here for the first time. The jet exists mainly from May toSeptember and has a core at 850 mb. Ma...
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A simple theory is presented for a nocturnal low-level jet (LLJ) over a planar slope. The theory extends the classical inviscid inertial-oscillation model of LLJs to include upand downslope motion in the boundary layer within a stably-stratified environment. An initial value problem for the coupled equations of motion and thermodynamic energy is solved for air parcels suddenly freed of a fricti...
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The velocity fluctuations of particles in a low-Reynolds-number fluidized bed have important similarities and differences with the velocity fluctuations in a low-Reynoldsnumber sedimenting suspension. We show that, like sedimentation, the velocity fluctuations in a fluidized bed are described well by the balance between density fluctuations due to Poisson statistics and Stokes drag. However, un...
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ژورنال
عنوان ژورنال: Journal of Applied Meteorology
سال: 1965
ISSN: 0021-8952
DOI: 10.1175/1520-0450(1965)004<0576:vvfian>2.0.co;2