EPB detection by FORMOSAT-7/COSMIC-2 S4-index

Introduction

GNSS positioning often suffers from the radio scintillation, which is occurred by the equatorial plasma bubbles (EPBs) distributing in F-region of ionosphere (200-1000km altitude). Our work constitutes scintillation index S4 data probed by FORMOSAT-7/COSMIC-2 (F7/C2) from all the latitudes, and project them to the equatorial plane along the geomagnetic field lines. The < 1 hour revisit time benefits the F7/C2 with much higher temporal resolution comparing to the F3/C1. Therefore, this study is the first near real-time equatorial scintillation (as the EPBs proxy) monitoring of the globe. The rapid observations of the EPBs provide opportunity and potential to improve the performance of space weather forecasting.

An illustration of the F7/C2 detecting EPBs by receiving GNSS signal

The results shown in this website (see the data displaying page) are hourly renewed F7/C2 S4 EPB detections, which is illustrated as the altitudinal displacement of the S4 EPB detections along the geomagnetic equator.

Developer Contact(s)

Chen, Shih-Ping Ph.D (z10802071@email.ncku.edu.tw)

Publication(s)

Chen,S.P.,Lin,C.H., Rajesh,P.K.,Liu,J.Y.,Eastes,R.,Chou,M.Y.,&Choi,J.M.(Under revised).Near real-time plasma irregularity monitoring by FORMOSAT-7/COSMIC-2