Atmospheric Turbulence Research at WVU

Modeling of Cloud Scale Turbulent Transport

High-resolution numerical simulations are being used to understand the dynamics and role of turbulent fluctuations in and around atmospheric clouds. A better modeling capability of the variety of cloud structures found in the atmosphere is important to the accuracy of regional forecasts and to the understanding of the earth's energy balance.

Sponsor: US Office of Naval Research

Recent Papers


Beare, R., M. MacVean, A. Holtslag, J. Cuxart, I. Esau, J-C. Golaz, M. Jimenez, M. Khairoutdinov, B. Kosovic, D. Lewellen, T. Lund, J. Lundquist, A. McCabe, A. Moene, Y. Noh, S. Raasch, and P. Sullivan, (2006), "An Intercomparison of Large-Eddy Simulations of the Stable Boundary Layer",  Bound.-Layer Meteor., Vol. 118, 247-272.

Cuxart, J., A. Holtslag, R. Beare, E. Bazile, A. Beljaars, A. Cheng, L. Conangla, M. Ek, F. Freedman, R. Hamdi, A. Kerstein, H. Kitagawa, G. Lenderink, D. Lewellen, J. Mailhot, T. Mauritsen, V. Perov, G. Schayes, G-J. Steeneveld, G. Svensson, P. Taylor, W. Weng, S. Wunsch, and K-M. Xu, (2006),  "Single-column Model Intercomparison for a Stably Stratified Atmospheric Boundary Layer",  Bound.-Layer Meteor., Vol. 118, 273-303.

Stevens, B., C-H. Moeng, A. Ackerman, C. Bretherton, A. Chlond, S. de Roode, J. Edwards, J-C. Golaz, H. Jiang, M. Khairoutdinov, M. Kirkpatrick, D. Lewellen, A. Lock, F. Müller, D. Stevens, E. Whelan, and P. Zhu, (2005),  "Evaluation of Large-Eddy Simulations via Observations of Nocturnal Marine Stratocumulus",  Mon. Wea. Rev., Vol. 133, 1443-1462.

Lewellen, D. C. and W. S. Lewellen, (2004), "Simple, Large-Eddy, Buoyancy Flux Model for Cloudy Boundary Layers", proceedings of the 16th AMS Conference on Boundary Layers and Turbulence.
PDF Version (250k)

Beare, R., M. MacVean, A. Holtslag, J. Cuxart, I. Esau, J-C. Golaz, M. Jimenez, M. Khairoutdinov, B. Kosovic, D. Lewellen, T. Lund, J. Lundquist, A. McCabe, A. Moene, Y. Noh, S. Raasch, and P. Sullivan, (2004), "An Intercomparison of Large-Eddy Simulations of the Stable Boundary Layer", proceedings of the 16th AMS Conference on Boundary Layers and Turbulence.

Fedorovich, E., R. Conzemius, I. Esau, F. Chow, D. Lewellen, C.-H. Moeng, P. Sullivan, D. Pino and J. Vila-Guerau de Arellano, (2004), "Entrainment Into Sheared Convective Boundary Layers as Predicted by Different Large Eddy Simulation Codes", proceedings of the 16th AMS Conference on Boundary Layers and Turbulence.

Duynkerke, P. G., S. R. de Roode, M. C. van Zanten, J. Calvo, J. Cuxart, S. Cheinet, A. Chlond, H. Grenier, P. J. Jonker, M. Köhler, G. Lenderink, D. Lewellen, C-L. Lappen, A. Lock, C-H. Moeng, F. Müller, D. Olmeda, J-M. Piriou, E. Sanchez, and I. Sednev, (2004), "Observations and Numerical Simulations of the Diurnal Cycle of the EUROCS Stratocumulus Case", Quarterly J. of the Royal Met. Soc., Vol. 130, 3269-3296.

Lewellen, D.C. and W. S. Lewellen, (2004) "Buoyancy Flux Modeling  for Cloudy Boundary Layers",  J. of the Atmospheric Sciences, Vol. 61, 1147-1160.
PDF Version (313k)

Siebesma, A.P.,  C. S. Bretherton, A.R. Brown, A. Chlond, J. Cuxart, P.G. Duynkerke, H. Jiang, M. Khairoutdinov, D.C. Lewellen, C-H. Moeng, E. Sanchez, B. Stevens, and D.E. Stevens, (2003), "A large-eddy simulation intercomparison study of shallow cumulus convection".   J. of the Atmospheric Sciences, Vol. 60, 1201-1219, 2003.
PDF Version (2154k)

Lewellen, D.C. and W. S. Lewellen, (2002), "Entrainment and Decoupling Relations for Cloudy Boundary Layers",  J. of the Atmospheric Sciences, Vol. 59, 2966-2986.
PDF Version (438k)

Brown, A. R. , R.T. Cederwall, A. Chlond, P.G. Duynkerke, C. Golaz, M. Khairoutdinov,  D. C. Lewellen, A. P. Lock,  M. K. MacVean, C-H. Moeng, R. A. J. Neggers, A. P. Siebesma and B. Stevens, (2003) "Large-eddy Simulation of the Diurnal Cycle of Shallow Cumulus Convection over Land", Quarterly J. of the Royal Met. Soc., Vol. 128, 1075-1093.

Lewellen, D.C., and W. S. Lewellen, (2002) "Entrainment and Large Eddy Structure in Cloudy Boundary Layers", proceedings of the 15th AMS Conference on Boundary Layers and Turbulence.
PDF Version (226k)

Lewellen, D.C., and W. S. Lewellen, (2000) "Boundary Layer Entrainment for Different Capping Conditions", proceedings of the 14th AMS Conference on Boundary Layers and Turbulence.
PDF Version (139k)
Compressed Postscript Version (91k)

Stevens, B. and A. Ackerman and B. Albrecht and A. Brown and A. Chlond and J. Cuxart and P. Duynkerke and D. Lewellen and M. MacVean and E. Sanchez and A. P. Siebesma and D. Stevens, (2001),  "Trade-wind Cumuli Under a Strong Inversion",  J. of the Atmospheric Sciences, Vol. 58, 1870-1891.
PDF Version (1795k)

Bretherton, C. S., M. MacVean, P. Bechtold, A. Chlond, W. Cotton, J. Cuxart, H. Cuijpers, M. Khairouitdinov, B. Kosovic, D. Lewellen, C-H. Moeng, P. Siebesma, B. Stevens, D. Stevens, I. Sykes, and M. Wyant, (1999), "An intercomparison of radiatiatively-driven entrainment and turbulence in a smoke cloud, as simulated by different numerical models",  Quarterly J. of the Royal Met. Soc., Vol. 125, 391-423.

Lewellen, D.C., and W. S. Lewellen, (1998), "Large-Eddy Boundary Layer Entrainment", J. of the Atmospheric Sciences, Vol. 55, 2645-2665.
PDF Version (291k)

Lewellen, D. C., and W. S. Lewellen, (1997), "LES Sensitivity Study of Cloud-top Entrainment" in Proceedings of the AMS 12th Conference on Boundary Layer Turbulence, Vancouver, BC, July 28-31.

Lewellen, D.C., Lewellen, W. S. and S. Yoh, (1996), "Influence of Bowen Ratio on Boundary Layer Cloud Structure", J. of the Atmospheric Sciences, Vol. 53, 175-187.
PDF Version (1064k)

Bechtold, P., S. Krueger, W. S. Lewellen, E. van Meijgaard, C.-H. Moenig, D. A. Randall, A. van Ulden, and S. Wang, (1996), "Modeling a stratocumulus-topped PBL: Intercomparison amoung different 1D codes and with Large Eddy Simulation", Bulletin of the Amer. Met. Soc., Vol 77, 2033-2042.
PDF Version (584k)

Moeng, C.-H., W.R. Cotton, C. Bretherton, A. Chlond, M. Khairoutdinov, S. Krueger, W. S. Lewellen, M. K. MacVean, J. R. M. Pasquier, H. A. Rand, A. P. Siebesma, R. I. Sykes, and B. Stevens, (1996), "Simulation of a stratocumulus-topped PBL: Intercomparison among different numerical codes," Bulletin of the Amer. Met. Soc., Vol. 77, 261-278.
PDF Version (1677k)

Lewellen, W. S., D. C. Lewellen, and S. Yoh, (1994), "Modeling of Persistent Circulations in Boundary Layer Clouds", in Proceedings of the AMS 6th Conference on Mesoscale Processes, July, Portland, Oregon.

Updated Jul. 30, 2007

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Mechanical and Aerospace Engineering
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