GNSS TEC, GIS and IVM data
收藏资源简介:
The data uploaded includes GPS, GLONASS and GALILEO vTEC, latitude, longitude and elevation angle on 15 January 2022. The TEC is 30-seconds sampled (2880 epochs). The data is in 3-dimensions, with one dimension for number of epochs, other one for number of satellites, and third dimension for the number of stations. There are three separaet mat files for each GNSS mission.The files with names GPSTEC_20220115.mat, GALTEC_20220115.mat, and GLOTEC_20220115.mat are the TEC data over the Japan/Taiwan - Australia/NewZealand region. The TEC data used for the India, Africa and America sectors in Figure S1 are upload with the corresponding names of the sectors/regions included in the filenames. <br> The GIS electron densiy is uploaded as a compress tar file GISdata.tar.gz.. This includes GIS data for 11, 12, 13, and 15 January 2022, in separate folders. Each folder contains 24 netCDF files correspodning to each UT hour. The data have 31 alttiude points (100-7000 km @20km), 73 latitude points (-90 to 90 @2.5 degree) and 72 longitude points (-180 to 175 @5 degrees). <br> The FORMOSAT-7/COSMIC-2 IVM data used in the figures and supporting information is uploaded as ivm_Tonga_20220115.nc in netCDF format. The file includes the variables, IVMden, IVMlat, IVMlon, and IVMUT. Here IVMden is the ion density per cm<sup>3</sup>, IVMlat, IVMlon, and IVMUT are the corresponding latitude, longitude and UT hour.
本次上传的数据集包含2022年1月15日的GPS(全球定位系统)、GLONASS(格洛纳斯卫星导航系统)及GALILEO(伽利略卫星导航系统)的垂直总电子含量(vertical Total Electron Content, vTEC)、纬度、经度与仰角数据。该总电子含量数据以30秒为采样间隔,共包含2880个历元(epoch)。数据集采用三维结构:三个维度分别对应历元数量、卫星数量与测站数量。每个GNSS(全球导航卫星系统)任务对应3个独立的MATLAB格式数据文件。其中命名为GPSTEC_20220115.mat、GALTEC_20220115.mat及GLOTEC_20220115.mat的文件,为日本/中国台湾-澳大利亚/新西兰区域的TEC数据。 用于图S1中印度、非洲与美洲扇区的TEC数据,已按照文件名所包含的扇区/区域名称命名并上传。 GIS电子密度数据以压缩tar文件GISdata.tar.gz形式上传,其包含2022年1月11日、12日、13日及15日的GIS数据,分别存储于独立文件夹中。每个文件夹内包含24个netCDF(network Common Data Form)格式文件,对应每一个世界时(Universal Time, UT)小时。该数据集包含31个高度层采样点(覆盖范围100~7000 km,采样间隔20 km)、73个纬度采样点(覆盖范围-90°~90°,采样间隔2.5°)与72个经度采样点(覆盖范围-180°~175°,采样间隔5°)。 本研究图表及辅助信息中使用的FORMOSAT-7/COSMIC-2 IVM数据,以netCDF格式的ivm_Tonga_20220115.nc文件上传。该文件包含IVMden、IVMlat、IVMlon与IVMUT四个变量:其中IVMden为离子数密度,单位为cm⁻³;IVMlat、IVMlon与IVMUT分别对应纬度、经度与世界时小时。



