| 基于探空资料的湖南地区加权平均温度 |
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| 引用本文： | 李黎,田莹,谢威,杨鹤,查达剑,孙敏.基于探空资料的湖南地区加权平均温度[J].大地测量与地球动力学,2017,37(3):282-286. |
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| 作者姓名： | 李黎 田莹 谢威 杨鹤 查达剑 孙敏 |
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| 摘 要： | 利用湖南地区长沙、怀化、郴州3个探空站数据，将数值积分法计算的Tm作为参考值，并基于最小二乘法建立湖南地区Tm本地化模型。研究结果表明，Bevis模型计算的Tm值在湖南地区存在2.51 K的系统偏差；湖南本地化模型Tm值与地面温度Ts之间的相关系数达到0.942 5，模型平均偏差1.60 K，内符合精度1.41 K；基于本地化Tm模型计算的GPS PWV与利用探空数据计算的PWV相比，平均偏差为0.52 mm，标准差为2.21 mm，RMS为2.45 mm。总体而言，本地化Tm模型的精度优于Bevis模型，更适用于湖南地区的GPS气象研究及业务应用。
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| 关 键 词： | 加权平均温度 GPS气象学 探空资料 可降水量 |
Localization Model Research of Weighted Average Temperature in Hunan Area Based on Radiosonde Data |
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| LI Li,TIAN Ying,XIE Wei,YANG He,ZHA Dajian,SUN Min.Localization Model Research of Weighted Average Temperature in Hunan Area Based on Radiosonde Data[J].Journal of Geodesy and Geodynamics,2017,37(3):282-286. |
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| Authors: | LI Li TIAN Ying XIE Wei YANG He ZHA Dajian SUN Min |
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| Abstract: | In this paper, radiosonde observation data from Changsha, Huaihua, Chenzhou in Hunan province are used to establish aTmlocalizationmodelbasedonnumericalintegration and the least squares principle.The results show that the system deviation of Bevis model is 2.51 K compared with the Tm from radiosonde as a reference value. The inner precision of the Hunan Tm localization model is 1.41 K, the mean bias is 1.60 K, and the correlation coefficient is 0.942 5. Compared to the radiosonde PWV, the average bias and RMS of GPS PWV using localization Tm model are 0.52 mm and 245 mm. Experimental analyses demonstrate that the precision of the Hunan localization Tm model is better than the Bevis model. It can be applied to research on and applications of GPS meteorology in Hunan region. |
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| Keywords: | weighted mean temperature GPS meteorology radiosonde data precipitable water vapor |
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