Results 11 to 20 of about 2,216,341 (286)

Hub height ocean winds over the North Sea observed by the NORSEWinD LiDAR array : measuring techniques, quality control and data management [PDF]

open access: yes, 2013
In the North Sea, an array of wind profiling wind lidars were deployed mainly on offshore platforms. The purpose was to observe free stream winds at hub height.
Courtney, Michael   +6 more
core   +4 more sources

Modelling the aerodynamics of vertical-axis wind turbines in unsteady wind conditions [PDF]

open access: yes, 2013
Most numerical and experimental studies of the performance of vertical-axis wind turbines have been conducted with the rotors in steady, and thus somewhat artificial, wind conditions - with the result that turbine aerodynamics, under varying wind ...
Scheurich, Frank, Brown, Richard
core   +4 more sources

Spatial sampling of the thermospheric vertical wind field at auroral latitudes [PDF]

open access: yes, 2011
Results are presented from two nights of bistatic Doppler measurements of neutral thermospheric winds using Fabry!Perot spectrometers at Mawson and Davis stations in Antarctica.
Davies, Theo   +4 more
core   +5 more sources

How Wind Shear Affects Trade‐wind Cumulus Convection

open access: yesJournal of Advances in Modeling Earth Systems, 2020
Motivated by an observed relationship between marine low cloud cover and surface wind speed, this study investigates how vertical wind shear affects trade‐wind cumulus convection, including shallow cumulus and congestus with tops below the freezing level.
K. C. Helfer   +3 more
doaj   +1 more source

Some aspects of fluctuating vertical wind shears [PDF]

open access: yesSolar Energy, 1981
Fluctuating vertical shears of wind speed have been measured using an array of towers. The statistical distributions of these shears are compared with formulas proposed by Fichtl (1971, 1972) and good agreement is found. A comparison of Fichtl's formula for the standard deviation of the fluctuating shears with a more empirical one proposed by Ramsdell (
openaire   +3 more sources

Role of Wind Shear in the Decay of Convective Boundary Layers

open access: yesAtmosphere, 2020
The role of wind shear in the decay of the convective boundary layer (CBL) is systematically investigated using a series of large-eddy simulations. Nine CBLs with weak, intermediate, and strong wind shear are simulated, and their decays after stopping ...
Seung-Bu Park   +2 more
doaj   +1 more source

Brief communication: On the influence of vertical wind shear on the combined power output of two model wind turbines in yaw [PDF]

open access: yesWind Energy Science, 2017
The effect of vertical wind shear on the total power output of two aligned model wind turbines as a function of yaw misalignment of the upstream turbine is studied experimentally.
J. Schottler   +3 more
doaj   +1 more source

The Influence of Vertical Wind Shear on Moist Thermals [PDF]

open access: yesJournal of the Atmospheric Sciences, 2019
AbstractAlthough it is well established that vertical wind shear helps to organize and maintain convective systems, there is a longstanding colloquial notion that it inhibits the development of deep convection. To investigate this idea, the vertical momentum budgets of sheared and unsheared moist thermals were compared in idealized cloud model ...
Peters, John M.   +2 more
openaire   +2 more sources

Analysis of the influence of the wind speed profile on wind power production

open access: yesEnergy Reports, 2022
The characterization of wind speed and its variability at a site is important for wind resource assessment. The most readily available wind measurements are at 10 m above ground level.
C.A. Lopez-Villalobos   +3 more
doaj   +1 more source

Effects of Ocean-Land Thermal Contrast on the Organized Cloud: Preliminary Results from a Squall Line Case on Hainan Island

open access: yesAtmosphere, 2023
Using the high-resolution numerical weather research and forecasting (WRF) model, study the squall line process that occurred on Hainan Island on 22 April 2020.
Qiuyu Wu   +3 more
doaj   +1 more source

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