Results 21 to 30 of about 592,628 (248)
Atmosphere, 2022 To explore the influence of complex terrain on wind characteristics of the surface layer and to better develop and utilize wind energy resources of high-altitude regions in central and western China, two typical topographies: the Qiaodi Village in ...
Dan Zheng +5 more
doaj +1 more source
The effects of displacement induced by thermal perturbations on the structure and stability of boundary-layer flows [PDF]
, 1996 The free-interaction influence of a thermal expansión process in boundary-layer gas flow is analyzed using the formalism of triple-deck theory. The physical model considered is the forced convection of a gas flowing over a flat plate subject to a heated ...
Liñán Martínez, Amable +1 more
core +2 more sources
Stable Boundary Layers and Subfilter-Scale Motions
Atmosphere, 2023 Recent high-resolution large-eddy simulations (LES) of a stable atmospheric boundary layer (SBL) with mesh sizes N=(5123,10243,20483) or mesh spacings ▵=(0.78,0.39,0.2) m are analyzed. The LES solutions are judged to be converged based on the good collapse of vertical profiles of mean winds, temperature, and low-order turbulence moments, i.e., fluxes ...
James C. McWilliams +3 more
openaire +2 more sources
Ramp‐Like PM 2.5 Accumulation Process and Z‐Less Similarity in the Stable Boundary Layer
Geophysical Research Letters, 2020 Similar ramp‐like structures exist in the time variations of surface PM 2.5 accumulation during the four different heavy haze pollution processes in Beijing, from 3 November 2017 to 15 January 2018.
Yu Shi, Fei Hu
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On the computation of planetary boundary-layer height using the bulk Richardson number method [PDF]
Geoscientific Model Development, 2014 Experimental data from four field campaigns are used to explore the variability of the bulk Richardson number of the entire planetary boundary layer (PBL), Ribc, which is a key parameter for calculating the PBL height (PBLH) in numerical weather and ...
Y. Zhang +6 more
doaj +1 more source
Overcoming the boundary layer turbulence at Dome C: ground-layer adaptive optics versus tower [PDF]
, 2009 The unique atmospheric conditions present at sites such as Dome C on the Antarctic plateau are very favorable for high spatial resolution astronomy. At Dome C, the majority of the optical turbulence is confined to a 30 to 40 m thick stable boundary layer
Ashley, M. C. B. +4 more
core +1 more source
Journal of Advances in Modeling Earth Systems, 2013 In the 1990s, scientists at European Centre for Medium‐Range Weather Forecasts (ECMWF) suggested that artificially enhancing turbulent diffusion in stable conditions improves the representation of two important aspects of weather forecasts, i.e., near ...
Irina Sandu +4 more
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Current Challenges in Understanding and Forecasting Stable Boundary Layers over Land and Ice
Frontiers in Environmental Science, 2014 Understanding and prediction of the stable atmospheric boundary layer is challenging. Many physical processes come into play in the stable boundary layer, i.e.
Gert-Jan eSteeneveld
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Estimation of orographically induced wave drag in the stable boundary layer during the CASES-99 experimental campaign [PDF]
, 2009 This paper addresses the quantification of gravity wave drag due to small hills in the stable boundary layer. A single column atmospheric model is used to forecast wind and temperature profiles in the boundary layer.
Holtslag, A.A.M. +2 more
core +3 more sources
Atmosphere, 2017 The aerosol optical depth (AOD) from satellites or ground-based sun photometer spectral observations has been widely used to estimate ground-level PM2.5 concentrations by regression methods.
Zengliang Zang +5 more
doaj +1 more source