A-CHAIM Test Period September 21st, 2021 through September 29th, 2021

A-CHAIM is an operational, near-real-time ionospheric data assimilation, incorporating measurements from GNSS stations, ionosondes, and vertical TEC from the JASON-3 satellite.

Output files from the offline A-CHAIM test run from September 21st, 2021 through September 29th, 2021. Included is the software required to read the output files, in C and MATLAB.

The reference datasets are also included, consisting of in-situ plasma density measurements from the SWARM and DMSP missions, as well as manually processed data from the Sodankyla, Pond Inlet, Svalbard, and Blissville ionosondes.

A-CHAIM是一套业务化近实时电离层数据同化系统，整合了全球导航卫星系统（GNSS）台站、电离层测高仪以及JASON-3卫星的垂直总电子含量（vertical TEC）观测数据。本数据集包含2021年9月21日至2021年9月29日期间离线A-CHAIM测试运行的全部输出文件，同时附带用于读取这些输出文件的C语言与MATLAB语言配套软件。数据集还包含参考数据集，其数据由SWARM与DMSP任务获取的原位等离子体密度实测数据，以及来自Sodankyla、Pond Inlet、Svalbard和Blissville电离层测高仪的人工处理观测资料组成。