Results 11 to 20 of about 58,237 (206)

A Boundary Layer Interpretation of the Low-level Jet [PDF]

open access: hybridTellus A: Dynamic Meteorology and Oceanography, 1961
The inertial boundary layer theory developed by Charney and Morgan to explain the intensification of currents near the western boundary of an ocean is applied to the northward flowing atmospheric jet stream observed in the lowest two kilometers over the central United States; here the mountainous spine of Central America serves as a barrier to the ...
H. Wexler
openaire   +2 more sources

The impact of climate change on the Great Plains low-level jet

open access: gold, 1993
The Great Plains low-level jet is an important atmospheric phenomena that impacts midwestern agriculture. It has been linked to insect pest migration and it influences springtime precipitation.
Turner, Richard
core   +3 more sources

WRF-Fire simulation of pyro-convection under the influence of low-level jet wind profiles

open access: green, 2015
Blowup wildland fire behaviour is characterised by a sudden increase in the fire intensity or forward rate of spread that precludes direct control. It is often accompanied by extreme pyro-convection and can pose a serious risk to firefighters.
Seto, D, Simpson, CC, Katurji, M
core   +3 more sources

WRF Forecasts of Great Plains Nocturnal Low-Level Jet-Driven MCSs. Part II: Differences between Strongly and Weakly Forced Low-Level Jet Environments

open access: green, 2016
The classic Great Plains southerly low-level jet (LLJ) is a primary factor in sustaining nocturnal convection. This study compares convection-allowing WRF forecasts of LLJ events associated with MCSs in strongly and weakly forced synoptic environments ...
Squitieri, Brian, Gallus, William
core   +3 more sources

Analytical description of a nocturnal low‐level jet [PDF]

open access: yesQuarterly Journal of the Royal Meteorological Society, 2010
AbstractAn exact analytical solution of the equations of motion is presented for the Blackadar conceptual model of the nocturnal low‐level jet as an inertial oscillation arising from the sudden release of frictional constraint (near‐cessation of dry‐convective turbulent mixing) near sunset.
Alan Shapiro, Evgeni Fedorovich
openaire   +1 more source

The role of the US Great Plains low-level jet in nocturnal migrant behavior

open access: yes, 2016
The movements of aerial animals are under the constant influence of atmospheric flows spanning a range of spatiotemporal scales. The Great Plains nocturnal low-level jet is a large-scale atmospheric phenomenon that provides frequent strong southerly ...
Stepanian, P. M.   +2 more
core   +1 more source

A: Universality in Vortex Formation. B: Evaluation of Mach Wave Radiation Mechanisms in a Supersonic Jet [PDF]

open access: yes, 2000
In this thesis two distinct features of coherent structures are investigated. In Part I a model for the pinch-off process in vortex ring formation is developed.
Mohseni, Kamran
core   +1 more source

Experimental and computational studies of factors affecting impinging jet flowfields [PDF]

open access: yes, 2009
An experimental and computational study was made of a single circular jet impinging onto a flat ground board. A 1/2" nozzle running at a fixed nozzle pressure ratio of 1.05 was used in the experimental phase (giving an nozzle exit Reynolds number of ...
Myszko, M
core  

A Parametric Study of Vane and Air-jet Vortex Generators [PDF]

open access: yes, 1998
An experimental parametric sturdy of vane and air-jet vortex generators in a turbulent boundary layer has been carried out. Experiments were carried out in two facilities, one with a free-stream velocity of 20 m/s and a boundary layer thickness (6) of ...
Bray, Tim P.
core  

Nocturnal Boundary Layer and Low-level Jet Characteristics under Different Turbulent Regimes [PDF]

open access: yes, 2015
The intensity, extent, and continuity of turbulence in the nocturnal stable boundary layer (SBL) is governed by many interacting processes and features. Generally, SBLs can be grouped into two broad categories: weakly stable and very stable.
Bonin, Timothy
core  

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