摘要
利用ERA5大气再分析资料研究ZTD高程尺度因子的精细时间变化特征,构建顾及高程尺度因子精细时间变化的云贵川地区ZTD垂直剖面格网模型(YZTD-H模型)。以云贵川地区探空站分层ZTD数据作为参考值,检验YZTD-H模型的精度,并将其与GPT2w模型和GPT3模型进行比较。结果表明,顾及精细时间变化和垂直剖面变化的YZTD-H模型在时间维度和垂直剖面维度上均表现出较好的稳定性。
We use ERA5 atmospheric reanalysis data to study the fine temporal variation of the ZTD elevation scale factor and to construct a vertical profile grid model(YZTD-H model)of the ZTD in the Yunnan-Guizhou-Sichuan region that considers the fine temporal variation of the elevation scale factor.We test the accuracy of the YZTD-H model with the layered ZTD data of radiosonde stations in the Yunnan-Guizhou-Sichuan region as reference values.We compare the results with the GPT2w and the GPT3 models.The results show that the YZTD-H model,which considers the delicate time variation and vertical profile variation shows great stability both in time dimension and vertical profile dimension.
作者
谢劭峰
张继洪
张亚博
曾印
唐友兵
熊思
XIE Shaofeng;ZHANG Jihong;ZHANG Yabo;ZENG Yin;TANG Youbing;XIONG Si(College of Geomatics and Geoinformation,Guilin University of Technology,319 Yanshan Street,Guilin 541006,China;School of Resources and Environment Science and Engineering,Hubei University of Science and Technology,88 Xianning Avenue,Xianning 437100,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2023年第1期6-11,共6页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(41864002)
广西自然科学基金(2018GXNSFAA281182)。
