Talk:Planetary boundary layer
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The following text was placed on the article page rather than the talk page by Rabrown99. Deditos 15:42, 20 October 2006 (UTC).
replace: Physical laws and equations of motions, which govern the planetary boundary layer dynamics and microphysics, are strongly non-linear and considerably influenced by properties of the earth's surface and evolution of the processes in the free atmosphere. To deal with this complicity, the whole array of turbulence modelling has been proposed. However, they are often not accurate enough to met practical requests. Significant improvements are expected from application of a large eddy simulation technique to problems related to the PBL.
with: Physical laws and equations of motion which govern the planetary boundary layer dynamics and microphysics are strongly non-linear. There is considerabe influence by properties of the earth's surface and evolution of the processes in the free atmosphere. To deal with the complicity of turbulence parameterization, a large array of turbulence modelling schemes have been proposed. Generally they are not accurate enough for all modelling applications. Often, the simplest linearization model, that of Ekman (1905) is used. However, the nonlinear prediction of organized large eddies (Brown, 1970) has been verified with satellite remote sensing data. Significant improvements have been made for large-scale modelling using nonlinear similarity parameterization. These are currently used successfully in numerical weather prediction models. Other contributions have been made with numerical applications modelling these OLE in large eddy simulation techniques.
