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RISStable Boundary Layer Depth from High-Resolution Measurements of the Mean Wind Profile
Publisher: American Meteorological Society
Abstract: The depth h of the stable boundary layer (SBL) has long been an elusive measurement. In this diagnostic study the use of high-quality, high-resolution (?z = 10 m) vertical profile data of the mean wind U(z) and streamwise ...
Turbulence Regimes and Turbulence Intermittency in the Stable Boundary Layer during CASES-99
Publisher: American Meteorological Society
Abstract: n investigation of nocturnal intermittent turbulence during the Cooperative Atmosphere?Surface Exchange Study in 1999 (CASES-99) revealed three turbulence regimes at each observation height: 1) regime 1, a weak turbulence ...
Turbulent Velocity-Variance Profiles in the Stable Boundary Layer Generated by a Nocturnal Low-Level Jet
Publisher: American Meteorological Society
Abstract: Profiles of mean winds and turbulence were measured by the High Resolution Doppler lidar in the strong-wind stable boundary layer (SBL) with continuous turbulence. The turbulence quantity measured was the variance of the ...
Relationship between Low-Level Jet Properties and Turbulence Kinetic Energy in the Nocturnal Stable Boundary Layer
Publisher: American Meteorological Society
Abstract: In the nighttime stable boundary layer (SBL), shear and turbulence are generated in the layer between the maximum of the low-level jet (LLJ) and the earth's surface. Here, it is investigated whether gross properties of the ...
Doppler Lidar–Based Wind-Profile Measurement System for Offshore Wind-Energy and Other Marine Boundary Layer Applications
Publisher: American Meteorological Society
Abstract: ccurate measurement of wind speed profiles aloft in the marine boundary layer is a difficult challenge. The development of offshore wind energy requires accurate information on wind speeds above the surface at least at the ...
Quantifying Wind Turbine Wake Characteristics from Scanning Remote Sensor Data
Publisher: American Meteorological Society
Abstract: ecause of the dense arrays at most wind farms, the region of disturbed flow downstream of an individual turbine leads to reduced power production and increased structural loading for its leeward counterparts. Currently, ...
Wind Energy Meteorology: Insight into Wind Properties in the Turbine-Rotor Layer of the Atmosphere from High-Resolution Doppler Lidar
Publisher: American Meteorological Society
Abstract: g the need for high-quality wind information aloft in the layer occupied by turbine rotors (~30?150 m above ground level) is one of many significant challenges facing the wind energy industry. Without wind measurements at ...
The Very Stable Boundary Layer on Nights with Weak Low-Level Jets
Publisher: American Meteorological Society
Abstract: The light-wind, clear-sky, very stable boundary layer (vSBL) is characterized by large values of bulk Richardson number. The light winds produce weak shear, turbulence, and mixing, and resulting strong temperature gradients ...
3D Volumetric Analysis of Wind Turbine Wake Properties in the Atmosphere Using High-Resolution Doppler Lidar
Publisher: American Meteorological Society
Abstract: ind turbine wakes in the atmosphere are three-dimensional (3D) and time dependent. An important question is how best to measure atmospheric wake properties, both for characterizing these properties observationally and for ...
Horizontal-Velocity and Variance Measurements in the Stable Boundary Layer Using Doppler Lidar: Sensitivity to Averaging Procedures
Publisher: American Meteorological Society
Abstract: Quantitative data on turbulence variables aloft?above the region of the atmosphere conveniently measured from towers?have been an important but difficult measurement need for advancing understanding and modeling of the ...