Parameterization of subgrid plume dilution for use in large-scale atmospheric simulations
| Autor: | A. D. Naiman, S. K. Lele, J. T. Wilkerson, M. Z. Jacobson |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Atmospheric Chemistry and Physics, Vol 10, Iss 5, Pp 2551-2560 (2010) |
| Druh dokumentu: | article |
| ISSN: | 1680-7316 1680-7324 |
| Popis: | A new model of plume dynamics has been developed for use as a subgrid model of plume dilution in a large-scale atmospheric simulation. The model uses mean wind, shear, and diffusion parameters derived from the local large-scale variables to advance the plume cross-sectional shape and area in time. Comparisons with a large eddy simulation of aircraft emission plume dynamics, with an analytical solution to the dynamics of a sheared Gaussian plume, and with measurements of aircraft exhaust plume dilution at cruise altitude show good agreement with these previous studies. We argue that the model also provides a reasonable approximation of line-shaped contrail dilution and give an example of how it can be applied in a global climate model. |
| Databáze: | Directory of Open Access Journals |
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