Estimation of Air Temperature Reproduction Quality by the MM5 Model in the Urals in July

N. A. Kalinin, A. V. Kislov, E. D. Babina, and A. L. Vetrov

The quality estimation of diurnal air temperature course reproduction by the hydrodynamical MM5 model in the Urals in July is carried out by means of the comparison with the station observational data. The MM5 model reproduces the temperature maximums better than the minimums which are considerably overestimated by the model. The highest accuracy of air temperature reproduction is demonstrated by the model at 03:00, 06:00, 09:00, 12:00, and 24:00, whereas the lowest one, at 15:00, 18:00, and 21:00. The correlation coefficients between the model and actual data vary from 0.74 at 21:00 to 0.87 at 09:00 and 12:00. The autocorrelation functions computed for the actual and model data indicate that the MM5 model reproduces the temperature field with higher quality than the technique based on the inertial properties of the atmosphere.

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