近地面折射率结构常数的长期测量和统计分析
Longterm measurements and statistics study on refractiveindex structure parameter of surface layer
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摘要: 统计分析了1997～2000年合肥地区一复杂地形处近地面折射率结构常数的测量数据。给出了不同下垫面、不同季节、不同高度上的统计结果。白天强弱依次为6月、5月、4月、9月、1月。白天水面上比草地上小，夜间比草地上大。不论白天还是夜晚，近地面结构常数都随高度递减，且3～10m高的结构常数递减较慢，10～15m高的结构常数递减较快。结构常数随月份的日变化与模式计算结果基本一致。Abstract: The data of refractive index structure parameter from 1997 to 2000 at a complex terrain in Hefei are studied statistically. Results of refractive index structure parameter in different ground covers, different seasons, different heights are presented. Months goes when refractive index structure parameter in daytime from strong to weak are June, May, April, September, January. The refractive index over the grass are larger than that over the water in daytime, while the result of the comparison in nighttime is the reverse. The refractive index decreases with altitude increase both in day and at night. The refractive index structure parameter falls slower from 3 to 10m than 10 to 15m. refractive index measured and modeled agree well with each other.
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Key words:
- refractive index structure parameter /
- statistic study /
- model comparison
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