Modeling on the Atmospheric Horizontal Inhomogenity

摘要

Based on the radio sonde data observed in China, horizontal gradient of refractivity is analyzed. It is found that horizontal gradient is a random variable. Its maximum occurs at the height of 300 to 500 meters above the earth surface, where corresponds to the turbulent mixing height. The residual error due to horizontal inhomogeneity is less than the refraction error by two to three order of magnitude.