KEYWORDS: Soil science, Atmospheric modeling, Solar radiation models, Vegetation, 3D modeling, Atmospheric optics, Data modeling, Atmospheric physics, Temperature metrology, Meteorology
Two approaches to the modeling of heat and moisture exchange in the underlying surface were developed for a mesoscale meteorological model. The first approach is based on the solution of the one-dimensional heat equation in soil layer from the surface of the Earth, where we know the value of the heat flow, to a fixed depth, the temperature of which is assumed known and does not change over time. In the second approach we use parameterization scheme ISBA developed by Noilhan and Planton [12], including ordinary differential equations for the soil heat content and the soil moisture content.
The results of calculation of meteorological parameters using a meteorological model, TSU-NM3, as well as prediction of some indices of atmospheric air pollution in the city of Tomsk obtained from a mesoscale photochemical model are presented. The calculation results are compared with observational data on the atmosphere and pollutants.
This work presents the results of forecasting meteorological conditions that promote aircrafts icing in the atmospheric boundary layer; the forecasting results were obtained based on mesoscale meteorological model TSU-NM3. Godske formula which is based on the calculation of saturation temperature above ice, NCEP method, and statistical method of Hydrometeorological Centre of Russia were used as criteria of probability of aircraft icing during take-off or landing. Numeric forecast results were compared with physical observations made in the atmospheric boundary layer in October 2012 at the Tomsk airport. A good agreement obtained provided an opportunity to be certain about the above approach viability.
A micro-scale meteorological model has been developed to estimate detailed wind conditions within the atmospheric boundary layer near an airport taking into account the influence of buildings with different number of floors, vegetation areas and heterogeneity of underlying surface. Modeling results help to identify the low-altitude wind shear influencing flight performance of taking off and landing aircrafts.
A simple meteorological model considering turbulence, moisture microphysics and radiation heat transfer in the atmosphere has been developed for a prompt forecasting of processes taking place in the atmospheric boundary layer. Numerical simulation outcomes obtained with the using of this model will help to quickly forecast a daily variation of such meteorological parameters as rain precipitations, cloud cover and humidity.
KEYWORDS: Atmospheric modeling, Mathematical modeling, Meteorology, Solar radiation models, Clouds, Temperature metrology, Data modeling, Humidity, Atmospheric physics, Process modeling
A high-resolution mesoscale meteorological model TSU-NM3 has been presented for use in forecasting and investigating the weather phenomena and ground air quality over a limited urbanized area and over a major industrial centre or road junction. To solve mesoscale model equations an efficient explicit-implicit differencing method of the second order of approximation has been developed and supercomputer-oriented. The calculation results are well correlated with the measurements made for the City of Tomsk.
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