| Title: |
The Spectrum of Global Electron Content: A New Potential Indicator of Space Weather Activity |
| Authors: |
Josep Maria Aroca-Farrerons; Manuel Hernández-Pajares; Haixia Lyu; David Roma-Dollase; Raul Orus-Perez; Alberto García-Rigo; Victoria Graffigna; Germán Olivares-Pulido; Enric Monte-Moreno; Heng Yang; Qi Liu |
| Source: |
Sensors, Vol 24, Iss 2, p 393 (2024) |
| Publisher Information: |
MDPI AG |
| Publication Year: |
2024 |
| Collection: |
Directory of Open Access Journals: DOAJ Articles |
| Subject Terms: |
global electron content; space weather index; global navigation satellite systems; Chemical technology; TP1-1185 |
| Description: |
The time evolution of the total number of free electrons in the Earth’s ionosphere, i.e., the Global Electron Content (GEC), during more than two solar cycles is analyzed in this work. The GEC time series has been extracted from the Global Ionospheric Maps (GIMs) of Vertical Total Electron Content (VTEC) estimated by UPC-IonSAT with TOMION-v1 software from global GPS measurements since the end of 1996. A dual-layer voxel-based tomographic model solved with a forward Kalman scalar filter, from dual-frequency carrier GPS data only, provides the so-called UQRG GIM after VTEC kriging interpolation, with a resolution of 15 min in time, 5° in longitude and 2.5° in latitude. UQRG is one of the best behaving GIMs in the International GNSS Service (IGS).In this context, the potential application of the GEC spectrum evolution as a potential space weather index is discussed and demonstrated. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
https://www.mdpi.com/1424-8220/24/2/393; https://doaj.org/toc/1424-8220; https://doaj.org/article/7526040a91dc477a9e674402794fcfda |
| DOI: |
10.3390/s24020393 |
| Availability: |
https://doi.org/10.3390/s24020393; https://doaj.org/article/7526040a91dc477a9e674402794fcfda |
| Accession Number: |
edsbas.C6C8359B |
| Database: |
BASE |