Conclusion
This study brings a contribution to the validation of MH parameterizations used in air quality models. The MH at Bilthoven (NL) simulated by EUROS has been compared with MH estimates from ECMWF meteorological vertical profiles and LIDAR measurements for the month August 1997. It has been found that the EUROS standard formulation tends to underestimate the MH values and the day to day variability. Besides, the estimate based on a Richardson number method applied on ECMWF vertical profiles is generally lower than the LIDAR estimate. A new MH formulation taking into account the turbulence production due to surface friction and the entrainment heat flux at the top of the convective layer has been implemented in EUROS. Our results show that this formulation allows a better representation of the mixing layer growth during daytime. However a deeper evaluation would require the intercomparison of various MH estimates on longer time periods and on different locations.
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Delobbe, L. et al. (2004). Evaluation of Mixing Height Parameterizations for Air Pollution Models. In: Borrego, C., Schayes, G. (eds) Air Pollution Modeling and Its Application XV. Springer, Boston, MA. https://doi.org/10.1007/0-306-47813-7_43
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DOI: https://doi.org/10.1007/0-306-47813-7_43
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