Numerical Modeling of the Transformation of Global Gas Flows in the Earth’s Atmosphere over the Course of a Year : Global Perspective

A mathematical model, developed earlier in the Polar Geophysical Institute, is applied to investigate the transformation of global gas flows in the Earth’s atmosphere over the course of a year. The model is based on the numerical solution of the system of gas dynamic equations. The mathematical model produces three-dimensional distributions of the gas dynamic parameters of the atmosphere in the height range from 0 to 126 km over the Earth's surface. To investigate the seasonal transformation of the global circulation of the lower and middle atmosphere, simulations are performed for conditions corresponding to twelve dates, which belong to twelve different months. Results of simulations indicated that the variations of the solar illumination of the Earth's atmosphere, conditioned by different positions of the Earth along its trajectory around the Sun, influence considerably on the transformation of the planetary circulation of the lower and middle atmosphere over the course of a year.