Global Sporadic‐E Occurrence Rate Climatology Using GPS Radio Occultation and Ionosonde Data
An updated global climatology of blanketing sporadic E (Es) is developed from a combined
data set of Global Positioning System (GPS) radio occultation (RO) and ground‐based …
data set of Global Positioning System (GPS) radio occultation (RO) and ground‐based …
A comparison of sporadic-E occurrence rates using GPS radio occultation and ionosonde measurements
Sporadic-E (E s) occurrence rates from Global Position Satellite radio occultation (GPS-RO)
measurements have shown to vary by a factor of five between studies, motivating the need …
measurements have shown to vary by a factor of five between studies, motivating the need …
A statistical analysis of sporadic-E characteristics associated with GNSS radio occultation phase and amplitude scintillations
Statistical GNSS-RO measurements of phase and amplitude scintillation are analyzed at the
mid-latitudes in the local summer for a 100 km altitude. These conditions are known to …
mid-latitudes in the local summer for a 100 km altitude. These conditions are known to …
Improved models for estimating sporadic-E intensity from GNSS radio occultation measurements
Several models for estimating sporadic-E intensity from Global Navigation Satellite System
(GNSS) radio occultation (RO) observation have previously been developed using a single …
(GNSS) radio occultation (RO) observation have previously been developed using a single …
A comparison of FORMOSAT-3/COSMIC radio occultation and ionosonde measurements in sporadic E detection over mid-and low-latitude regions
S Sobhkhiz-Miandehi, Y Yamazaki, C Arras… - Frontiers in Astronomy …, 2023 - frontiersin.org
The investigation of sporadic E or Es layers typically relies on ground-based or satellite data.
This study compares the Es layers recorded in ionograms with those detected using GNSS …
This study compares the Es layers recorded in ionograms with those detected using GNSS …
Detection and classification of sporadic E using convolutional neural networks
In this work, convolutional neural networks (CNN) are developed to detect and characterize
sporadic E (Es), demonstrating an improvement over current methods. This includes a …
sporadic E (Es), demonstrating an improvement over current methods. This includes a …
Comparative study of ionospheric sporadic E occurrence rates using SNRnstd and S4 derived from GPS radio occultation
L Tang, J Li, F Zhang, F Zou - GPS Solutions, 2023 - Springer
Abstract GPS radio occultation (GPS-RO) data, especially the parameters of signal-to-noise
ratio normalized standard deviation (SNRnstd) and S4, are widely used to measure the …
ratio normalized standard deviation (SNRnstd) and S4, are widely used to measure the …
Dynamics of Mid‐Latitude Sporadic‐E and Its Impact on HF Propagation in the North American Sector
BSR Kunduri, PJ Erickson, JBH Baker… - Journal of …, 2023 - Wiley Online Library
Sporadic‐E (Es) are thin layers of enhanced ionization observed in the E‐region, typically
between 95 and 120 km altitude. Es plays an important role in controlling the dynamics of …
between 95 and 120 km altitude. Es plays an important role in controlling the dynamics of …
Sporadic-E studies over Southern Hemisphere geomagnetic mid-latitudes
AJ Foppiano, MA Bravo, LCA Resende… - Journal of Atmospheric …, 2024 - Elsevier
Sporadic-E (Es) are characterized by denser layers whose formation could be related to
wave activity in the lower thermosphere, such as planetary waves, tides, and gravity waves …
wave activity in the lower thermosphere, such as planetary waves, tides, and gravity waves …
Global Empirical Model of Sporadic-E Occurrence Rates
Intense ionization enhancements in the Earth's ionosphere, known as sporadic-E (E s), can
degrade and severely disrupt the propagation of radio signals. Although many previous …
degrade and severely disrupt the propagation of radio signals. Although many previous …