【摘要】 使用球载温度脉动仪测量大气光学湍流时，上升气球产生的尾流会对其下方载荷的测量造成影响。为分析该影响，本文采用一个气球悬挂两个探空仪的方式，于2021年11月在湖南省怀化市进行了实验测量。首先采用Barat提出的尾流判断标准对气球下方不同位置进行了尾流评估，对比了气球下方不同位置测量的湍流强度；随后根据测量的折射率结构常数，比较了不同高度区间的相干长度和视宁度，得到气球下方不同位置的测量偏差对比。结果表明：在0～6 km高度处，30 m绳长测量结果受尾流影响明显；在6～15 km高度处，气球尾流因较大的风剪切而对测量影响较小；在15～30 km高度处虽然存在尾流影响，但该高度层大气光学湍流强度较弱，尾流影响对整层大气的光学参数贡献很小。本研究对未来光学湍流的探空测量工作有着重要的参考意义。更多还原

【Abstract】 When measuring atmospheric optical turbulence with a balloon-borne micro-thermometer, the wake caued by the rising balloon will affect the measurement of the thermometer below it. In order to analyze this effect, experimental measurements were carried out in Huaihua, Hunan Province, China, in November 2021 using the method of hanging two radiosondes under a balloon. Fistly, the wake evaluation standard proposed by Barat was used to evaluate the effects of the wake at different positions under the balloon, and the turbulence intensity measured at different positions under the balloon was compared. Then, according to the measured refractive index structure constant, the coherence length and atmospheric seeing of different height were compared, and the measurement deviation comparison of different positions under the balloon was obtained. The results show that at altitudes of 0–6 km, the measurement result with a 30 m rope is significantly affected by the wake, at altitudes of 6–15 km, the balloon wake has little influence on the measurement due to larger wind shear, and at altitudes of 15–30 km, despite the existence of wake effects, they have little contribution to the optical parameters of the entire atmosphere due to the weak optical turbulence intensity in this altitude layer. This study has great reference significance for future sounding measurements of optical turbulence.更多还原