Waves in the Overlying inversion of the Convective Boundary Layer
| Autor: | Chin-Hoh Moeng, David J. Carruthers |
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| Rok vydání: | 1987 |
| Předmět: | |
| Zdroj: | Journal of the Atmospheric Sciences. 44:1801-1808 |
| ISSN: | 1520-0469 0022-4928 |
| DOI: | 10.1175/1520-0469(1987)044<1801:witoio>2.0.co;2 |
| Popis: | Large eddy simulations and a linear theory are used to examine the characteristics of waves trapped in the temperature inversion that bounds the convective boundary layer. These waves are important because they strongly affect the rate of entrainment and the fluxes of momentum and scalars across the interface. lie simulations show that the motions, at least on scales larger than the model grid size, are nearly linear and can be described well by the theory of Carruthers and Hunt. A simple linear model is used to relate the frequency of trapped waves in the inversion to the ratio of the pressure-temperature covariance and temperature variance. These quantities, which are easily obtained from the simulations, are used to estimate the structure of the waves. Comparisons of the wave properties are made between the theory, further simulations and observations, with good agreement. |
| Databáze: | OpenAIRE |
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