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Comparison of three dry deposition models applied to field measurements in the Southern Bight of the North Sea
Rojas, C.M.; Van Grieken, R.; Laane, R.W.P.M. (1993). Comparison of three dry deposition models applied to field measurements in the Southern Bight of the North Sea. Atmos. Environ. (1994) 27A(3): 363-370
In: Atmospheric Environment (1994). Pergamon: Oxford. ISSN 1352-2310; e-ISSN 1873-2844, meer
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| Auteurs | | Top |
- Rojas, C.M.
- Van Grieken, R., meer
- Laane, R.W.P.M., meer
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| Abstract |
Dry deposition velocities have been calculated using three different approaches. Turbulent wind profile theory has been used to predict the drag coefficient, wind speed and friction velocity at 10m height when the wind speed is measured at a higher altitude. The resulting parameters were introduced in a two-layer deposition model. The second approach was the well-known model of Slinn and Slinn (1980, Atmospheric Environment 14, 1013-1016), whereas the third corresponded to the model published by Williams (1982, Atmospheric Environment 16, 1933-1938). Results point to clear differences. However, in a field experiment carried out at the Southern Bight of the North Sea, all three approaches show relatively comparable results. The role played by the size distribution of atmospheric particulate matter is essential. In our case any of the three models could have given satisfactory outcomes taking into account the wide spread of the experimental results cited in the literature for the same airshed. |
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