复杂地形近地面光学湍流

 本文分析了合肥一水库边，近地面大气折射率结构常数Cn₂的观测结果。表明Cn₂的水平分布和时间变化和气象条件有关，是近地面热量平衡变化的结果。由于大面积大热容量水体的存在，使Cn₂的变化有复杂多样的特点。文章得到了用气象要素，即气温、云量加上太阳高度分别估算近湖面和近地面Cn₂的经验公式。提出了估算复杂地形Cn₂的方法。

OPTICAL TURBULENCE IN THE SURFACE LAYER OVER COMPLEX TERRAIN

The experimental data of atmospheric refractive index structure parameter (RISP) in thesurface layer over the complex terrian measured at the top of a peninsula in Hefei were analysed. It is shownthat because of a large area of water possessing large thermal capacity existing, the variation of (RISP) iscomplicated and variety. Experience formulas used for estimation of (RISP) in the surface layer over waterand land were obtained. A method used for estimation of (RISP) in the surface layer over complex terrain was presented.