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Comparison of Large Eddy Simulations of a Convective Boundary Layer with Wind Lidar Measurements : Volume 8, Issue 1 (26/04/2012)

By Pedersen, J. G.

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Book Id: WPLBN0003991189
Format Type: PDF Article :
File Size: Pages 4
Reproduction Date: 2015

Title: Comparison of Large Eddy Simulations of a Convective Boundary Layer with Wind Lidar Measurements : Volume 8, Issue 1 (26/04/2012)  
Author: Pedersen, J. G.
Volume: Vol. 8, Issue 1
Language: English
Subject: Science, Advances, Science
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2012
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Gryning, S., Floors, R., Kelly, M., Peña, A., Pedersen, J. G., & Batchvarova, E. (2012). Comparison of Large Eddy Simulations of a Convective Boundary Layer with Wind Lidar Measurements : Volume 8, Issue 1 (26/04/2012). Retrieved from http://www.ebooklibrary.org/


Description
Description: Department of Wind Energy, Risø Campus, Technical University of Denmark, Roskilde, Denmark. Vertical profiles of the horizontal wind speed and of the standard deviation of vertical wind speed from Large Eddy Simulations of a convective atmospheric boundary layer are compared to wind LIDAR measurements up to 1400 m. Fair agreement regarding both types of profiles is observed only when the simulated flow is driven by a both time- and height-dependent geostrophic wind and a time-dependent surface heat flux. This underlines the importance of mesoscale effects when the flow above the atmospheric surface layer is simulated with a computational fluid dynamics model.

Summary
Comparison of Large Eddy Simulations of a convective boundary layer with wind LIDAR measurements

Excerpt
Brasseur, J. G. and Wei, T.: Designing large-eddy simulation of the turbulent boundary layer to capture law-of-the-wall scaling, Phys. Fluids., 22, 1–21, 2010.; Brown, A. R., Beljaars, A. C. M., and Hersbach, H.: Errors in parametrizations of convective boundary-layer turbulent momentum mixing, Q. J. Roy. Meteor. Soc., 132, 1859–1876, 2006.; Conzemius, R. and Fedorovich, E.: Large eddy simulation of realistic wind fields in daytime atmospheric boundary layer, in: Proceedings of the 5th International Symposium on Computational Wind Engineering, Chapel Hill, North Carolina, USA, 22–27 May 2010.; Floors, R., Batchvarova, E., Gryning, S.-E., Hahmann, A. N., Peña, A., and Mikkelsen, T.: Atmospheric boundary layer wind profile at a flat coastal site – wind speed lidar measurements and mesoscale modeling results, Adv. Sci. Res., 6, 155–159, doi:10.5194/asr-6-155-2011, 2011.; Gryning, S.-E., Batchvarova, E., Brümmer, B., Jørgensen, H., and Larsen, S.: On the extension of the wind profile over homogeneous terrain beyond the surface boundary layer, Bound.-Lay. Meteorol., 124, 251–268, 2007.; Kumar, V., Svensson, G., Holtslag, A. A. M., Meneveau, C., and Parlange, M. B.: Impact of surface flux formulations and geostrophic forcing on large-eddy simulations of diurnal atmospheric boundary layer flow, J. Appl. Meteorol. Clim., 49, 1496–1516, 2010.; Moeng, C.-H.: A large-eddy-simulation model for the study of planetary boundary-layer turbulence, J. Atmos. Sci., 41, 2052–2062, 1984.; Sathe, A., Mann, J., Gottschall, J., and Courtney, M. S.: Can wind lidars measure turbulence?, J. Atmos. Ocean. Tech., 28, 853–868, 2011; Sullivan, P. P. and Patton, E. G.: A highly parallel algorithm for turbulence simulations in planetary boundary layers: Results with meshes up to 10243, 18th Conference on Boundary Layer and Turbulence, Stockholm, Sweden, 2008.; Sullivan, P. P., McWilliams, J. C., and Moeng, C.-H.: A subgrid-scale model for large-eddy simulation of planetary boundary-layer flows, Bound.-Lay. Meteorol., 71, 247–276, 1994.

 

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