TED: A global temperature-driven thermoelastic displacement dataset for GNSS reference stations (2000–2023)

This repository provides station-level daily time series of temperature-driven vertical thermoelastic displacement (TED) for continuous GNSS reference stations spanning 2000–2023. The TED series are generated with a full-spectrum, layered finite-element framework driven by ERA5 temperature fields and parameterised with site-specific subsurface thermophysical properties derived from global soil datasets. The product is distributed as a correction-ready dataset designed to be consistent with standard daily GNSS coordinate solutions. To reduce longitude-dependent artefacts associated with fixed-epoch sampling, the model is evaluated at four UTC epochs (00/06/12/18) and the resulting realisations are combined using a phase-consistent scheme to produce a single daily TED estimate. The ngl_station.txt file lists GNSS station names together with their latitude and longitude. Data are provided as one plain-text file per station (e.g., 0ABL_thermal.txt) and can optionally be organised into subfolders by the first character of the filename (e.g., files starting with 0 stored in a 0/ subdirectory). Each station file contains three whitespace-delimited columns: (1) Year (YYYY), (2) day of year (DOY; 1–365, or 366 in leap years), and (3) vertical TED displacement (mm). The daily TED values can be matched directly to GNSS daily height time series using the Year–DOY keys and applied as an environmental correction (e.g., subtracting TED from observed heights) in station-level analyses or large-scale processing workflows.本数据集仓库提供了2000–2023年间连续运行全球导航卫星系统（GNSS）参考站的、由温度驱动的垂直热弹性位移（temperature-driven vertical thermoelastic displacement, TED）测站级逐日时间序列。该TED序列基于ERA5温度场驱动的全谱分层有限元框架生成，并采用源自全球土壤数据集的测站专属地下热物理参数进行参数化设置。本产品以可直接用于校正的数据集形式发布，旨在与标准逐日GNSS坐标解算结果保持一致。为减轻固定历元采样带来的经度相关伪影，本模型在四个协调世界时（UTC）历元（00/06/12/18）进行计算，并通过相位一致融合方案将各历元的计算结果合并，最终得到单一日度TED估计值。 ngl_station.txt文件列出了GNSS测站名称及其经纬度。数据按测站存储为单个纯文本文件（例如0ABL_thermal.txt），也可根据文件名首字符组织为子文件夹（例如首字符为0的文件存储于0/子目录中）。每个测站文件包含三列以空白符分隔的数据：(1) 年份（YYYY格式），(2) 日序数（DOY；取值范围1~365，闰年为1~366），(3) 垂直热弹性位移量（单位：毫米）。可通过年份-日序数键将逐日TED值与GNSS逐日高程时间序列直接匹配，并在测站级分析或大规模处理流程中作为环境校正量使用（例如从观测高程中减去TED值）。