摘要
本文利用我国5个测站常规探空资料,应用大气折射理论和统计学方法建立了大气折射指数垂直分布三种统计模式,结果表明:目前使用的4/3等效地球半径模式精度最差,只能在1千米高度以下使用,才能保证精度;改进等效地球半径模式精度最高;指数模式在3千米高度以下使用,精度也可保证。
In this paper, conventional sounding data of ten years from five observational stations in China are used for establishing three statistical models for the vertical distribution of the atmospheric refraction index based on the atmosph ric refraction theory and the statistical approach. Results show that the current 4/3 effective earth's radius model has the lowest accuracy and can be used only below the height of one kilometer to guarantee sounding accuracy while the modified effective -arth's radius model has the greatest accuracy. It is found that accuracy can be guaranteed by the exponential model when used even below thre. kilometers.
出处
《气象科学》
CSCD
北大核心
1991年第4期402-413,共12页
Journal of the Meteorological Sciences
