合肥地区大气折射率结构常数高度分布模式
Vertical distribution models of atmospheric structure constant of refractive index
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摘要: 利用QHTP-2型温度脉动探空仪对合肥地区大气折射率结构常数进行了长期连续的实地探空测量，对大量探空实验数据的统计分析得出合肥地区(0～25 km)折射率结构常数随高度分布廓线，并以国际广泛应用的Hufnagel-Valley模式为基础拟合得出合肥地区大气折射率结构常数统计模式廓线。研究发现:合肥地区大气湍流随高度分布廓线存在明显的昼夜和季节变化，大气湍流在随高度增加而减小的趋势上叠加了随机起伏，并具有鲜明的跳跃式结构；合肥地区的高空湍流模式廓线较好地符合实测的平均廓线，能反映自由大气中湍流随高度分布的重要特征——指数递减和对流层增强。Abstract: The atmospheric structure constant of refractive index is an important parameter of denoting atmospheric turbulence, it was measured continuously in Hefei using QHTP-2 micro-thermal meter. The vertical profile of atmospheric structure constant of refractive index in Hefei（0～25 km）is investigated by analysis of experimental data,and the vertical atmospheric structure constant of refractive index model of atmospheric structure constant of refractive index in Hefei is gained based on Hufnagel-Valley model. It is found that the vertical profiles of atmospheric turbulence in Hefei have obvious daily and seasonal diversification. Atmospheric turbulence reduces with random fluctuation as height increases, it has obvious jumping configuration; upper air turbulence model in Hefei preferably acco
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