System for Rapid Analysis of Ionospheric Dynamics Based on GNSS TEC Signals

System for Rapid Analysis of Ionospheric Dynamics based on GNSS TEC Signals (S-RAID) performs downloading, parsing, and processing of Global Navigation Satellite System (GNSS) signal measurements and their geometry of observations, calculation of slant and vertical total electron contents (sTEC and vTEC) and subsequent visualization for selected band-passes of fluctuations with periods shorter than two hours. In a routine operation, the System processes 15/30 sec GNSS signal measurements over Continental United States (CONUS) from ~2700 stations. Raw GNSS signal measurements are collected from public archives, including The Crustal Dynamics Data Information System (CDDIS), EarthScope/UNAVCO, National Oceanic and Atmospheric Administration (NOAA), and Scripps Institution of Oceanography's Orbit and Permanent Array Center (SOPAC). The System is oriented towards rapid access to GNSS sTEC/vTEC data for the investigation of traveling ionospheric disturbances (TIDs) of various nature, from large scale TIDs to irregularities of ~10s of km and minutes of periods, in particular those driven by atmospheric acoustic and gravity wave dynamics. The details of data processing methodology are provided in the manuscript (1).

Currently, this archive provides an access to high-resolution visualization of processed vTEC mapped over CONUS for years 01/2017-12/2025 (Version 3 to the left - includes full archive).

The structure of the archive:
/YYYY/MM/DD/animation.mp4, where YYYY - year, MM - month, DD - day of month, animation.mp4 - temporally evolving visualization of processed vTEC (see Steps to Reproduce for the details of data processing methodology).

To reference the archive or the methodology for data processing, we suggest to:
(1) Cite the manuscript: Inchin, P. A., Deshpande, K. B., Egan, S., Lay, E. H., Obenberger, K. S., Zettergren, M. D., & Snively, J. B. (2025). Ionospheric disturbances in GNSS TEC data: SpaceX Falcon 9 deorbit maneuvers over CONUS in April–May 2024. Geophysical Research Letters, 52, e2024GL112364. https://doi.org/10.1029/2024GL112364
(2) Cite this archive by its DOI: 10.17632/jbx98yscmd.1, and/or

Being processed in an automated regime, the visualizations may contain errors and bugs and thus should be used with caution as is. If you encounter any issues or wish to obtain data for animation replication, contact P.A. Inchin [e-mail], J.B. Snively [e-mail] or M.D. Zettergren [e-mail].

Research is supported by DARPA Cooperative Agreement HR00112120003. This work is approved for public release; distribution is unlimited. The content of the information does not necessarily reflect the position or the policy of the Government, and no official endorsement should be inferred.

基于全球导航卫星系统（Global Navigation Satellite System, GNSS）TEC信号的电离层动力学快速分析系统（缩写S-RAID）可实现全球导航卫星系统（GNSS）信号观测数据及其观测几何的下载、解析与处理，计算斜向总电子含量（slant total electron content, sTEC）与垂直总电子含量（vertical total electron content, vTEC），并对周期短于2小时的选定波动频段开展后续可视化展示。

在常规运行模式下，该系统可处理美国本土（Continental United States, CONUS）范围内约2700个观测站的15/30秒间隔GNSS信号观测数据。

原始GNSS信号观测数据取自多个公共档案库，包括地壳动力学数据信息系统（The Crustal Dynamics Data Information System, CDDIS）、EarthScope/UNAVCO、美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）以及斯克里普斯海洋研究所轨道与永久阵列中心（Scripps Institution of Oceanography's Orbit and Permanent Array Center, SOPAC）。

本系统旨在快速获取GNSS sTEC/vTEC数据，用于研究各类传播电离层扰动（traveling ionospheric disturbances, TIDs）——从大尺度扰动到约数十公里尺度、周期为数分钟的不规则结构，尤其是由大气声波与重力波动力学驱动的扰动。数据处理方法的详细细节见参考文献(1)。

目前本档案库可访问2017年1月至2025年12月期间美国本土区域映射后的高分辨率vTEC可视化成果（左侧版本3包含完整归档数据）。

该档案库的目录结构为：/YYYY/MM/DD/animation.mp4，其中YYYY为年份，MM为月份，DD为当月日期，animation.mp4为处理后vTEC的时序演化可视化成果（数据处理方法的详细步骤见“复现步骤”模块）。

如需引用本档案库或其数据处理方法，建议：
(1) 引用下述文献：Inchin, P. A., Deshpande, K. B., Egan, S., Lay, E. H., Obenberger, K. S., Zettergren, M. D., & Snively, J. B. (2025). Ionospheric disturbances in GNSS TEC data: SpaceX Falcon 9 deorbit maneuvers over CONUS in April–May 2024. Geophysical Research Letters, 52, e2024GL112364. https://doi.org/10.1029/2024GL112364
(2) 通过其DOI（10.17632/jbx98yscmd.1）引用本档案库，或二者皆可。

本可视化成果以自动化流程生成，可能存在错误与漏洞，因此仅可在谨慎评估后使用。如遇任何问题或希望获取用于复现动画的原始数据，请联系P.A. Inchin（邮箱：[e-mail]）、J.B. Snively（邮箱：[e-mail]）或M.D. Zettergren（邮箱：[e-mail]）。

本研究得到美国国防高级研究计划局（Defense Advanced Research Projects Agency, DARPA）合作协议HR00112120003资助。本作品已获准公开发布，分发范围不受限制。本文内容未必代表美国政府的立场或政策，不应视为获得官方背书。