VISTA TEC database

Our research focuses on providing a fully-imputed map of the worldwide total electron content with high resolution and spatial-temporal smoothness. We fill in the missing values of the original Madrigal TEC maps via estimating the latent feature of each latitude and local time along the 2-D grid and give initial guess of the missing regions based on pre-computed spherical harmonics map. The resulting TEC map has high imputation accuracy and the ease of reproducing.;All data are in HDF5 format and are easy to read using the h5py package in Python. The TEC map is grouped in folders based on years and each file contains a single-day data of 5-min cadence. Each individual TEC map is of size 181*361.

本研究旨在构建兼具高分辨率与时空平滑性的全球总电子含量（Total Electron Content, TEC）完整填补图谱。我们通过估算二维网格上各纬度与地方时的潜在特征，结合预计算的球谐（Spherical Harmonics）图谱，对原始Madrigal TEC图谱中的缺失值进行填补，并为缺失区域生成初始预估结果。最终生成的TEC图谱具备较高的填补精度，且易于复现。
所有数据均采用HDF5格式存储，可通过Python的h5py包轻松读取。TEC图谱按年份分文件夹存储，每个文件包含单日数据，其时间采样间隔为5分钟。单张TEC图谱的尺寸为181×361。

搜集汇总

背景与挑战

背景概述

该数据集目前因合规审查，限制了中国(含港澳)、俄罗斯、伊朗、朝鲜、委内瑞拉和古巴等国家/地区的访问权限。