3种对流层干延迟模型在中国低纬度地区的精度分析

Comparison of Three ZHD Models in the Low Latitude Region of China

为了分析Saastamoinen模型、Hopfield模型和Black模型等干延迟（ZHD）模型在中国低纬度地区的精度情况，在中国低纬度地区的桂林、香港和海口3个地方，利用各地区相应的探空站2012年第122-152天的气象观测资料，分析了3种经验模型在低纬度地区的精度情况结果表明，在所选的3个站内，3神经验模型计算的ZHD变化趋势具有很好的一致性，以Saastamoinen模型计算的ZHD值为参考，Saastamoinen模型和Hopfield模型的ZHD值较为接近。

In order to analyze the precision of the three zenith hydrostatic delay(ZHD) models using in the low latitude region of China, the radiosonde data in year 2012 from day 122 to 152 at Guilin, Hongkong and Haikou were used to analyze the accuracy of the three empirical models in the low latitude region. The results show that for the selected three stations a good agreement of ZHD calculating by these models and Saastamoinen model and Hopi eld has the same level of accuracy when ZHD calculated from Saastamoinen model as reference, while the bias between the Black model and other two models is large.