云贵川地区ZTD垂直剖面格网模型  

ZTD Vertical Profile Grid Model in Yunnan-Guizhou-Sichuan Region

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)

机构地区：[1]桂林理工大学测绘地理信息学院,桂林市541006 [2]湖北科技学院资源环境科学与工程学院,湖北省咸宁市437100

出　　处：《大地测量与地球动力学》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)。

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.

关 键 词：云贵川地区 对流层天顶延迟 垂直剖面 高程尺度因子 YZTD-H模型 

分 类 号：P228[天文地球—大地测量学与测量工程]