Results 51 to 60 of about 2,902 (228)
Comparison of Seasonal foEs and fbEs Occurrence Rates Derived from Global Digisonde Measurements
Atmosphere, 2021 A global climatology of sporadic-E occurrence rates (ORs) based on ionosonde measurements is presented for the peak blanketing frequency, fbEs, and the ordinary mode peak frequency of the layer, foEs.
Dawn K. Merriman +3 more
doaj +1 more source
A Reduced Dimensional Emulator for Forecasting Equatorial Spread F
Space Weather, Volume 24, Issue 6, June 2026.Abstract A machine learning emulator has been developed to efficiently reproduce electron densities from a three‐dimensional, data‐driven, regional simulation of postsunset ionospheric irregularities associated with equatorial spread F (ESF). The simulation has previously been shown to produce accurate ESF conditions observed at the Jicamarca Radio ...
A. Kirchman, D. L. Hysell, S. Palacios
wiley +1 more source
TGO Ramfjordmoen Ionosonde Data July 2015
, 2019 About this dataset: This dataset contains ionosonde data in SAO format and ionograms in PNG format, and covers data from July 01-31, 2015.About the Tromsø Ionosonde (1993-present): Since 1980, the ionosonde was situated at 69° 35' N, 19° 13' E at ...
Tromsø Geophysical Observatory
core +1 more source
Multilayered Sporadic‐E Response to the Annular Solar Eclipse on June 21, 2020
Space Weather, 2021 A moon shadow of annular solar eclipse passed through East Asia in the afternoon on June 21, 2020, which was a good opportunity to study the rapid ionospheric response to the solar radiation variations. In the study, the high‐frequency echoes recorded by
Jin Wang +12 more
doaj +1 more source
Topside Ionosphere and Plasmasphere Modelling Using GNSS Radio Occultation and POD Data
Remote Sensing, 2021 A 3D-model approach has been developed to describe the electron density of the topside ionosphere and plasmasphere based on Global Navigation Satellite System (GNSS) measurements onboard low Earth orbit satellites.
Fabricio S. Prol, M. Mainul Hoque
doaj +1 more source
Space Weather, Volume 24, Issue 6, June 2026.Abstract The Ionospheric Monitoring Beacon network in Iran provides continuous, multi‐frequency high‐frequency (HF) transmissions using WSPRNET modulation, enabling global reception and near–real‐time monitoring of ionospheric propagation conditions.
A. Mahmoudian +2 more
wiley +1 more source
TGO Ramfjordmoen Ionosonde Data January 2017
, 2019 About this dataset: This dataset contains ionosonde data in SAO format and ionograms in PNG format, and covers data from January 01-31, 2017.About the Tromsø Ionosonde (1993-present): Since 1980, the ionosonde was situated at 69° 35' N, 19° 13' E at ...
Tromsø Geophysical Observatory
core +1 more source
Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.Abstract We present the first comprehensive multi‐instrument climatological study of quiet‐time equatorial F‐region vertical plasma drifts across South America, a region where the magnetic declination angle varies significantly. Our analysis of well‐established long‐term ground‐based data sets from the Jicamarca incoherent scatter radar spanning 1968 ...
Sophia R. Laranja +6 more
wiley +1 more source
TGO Ramfjordmoen Ionosonde Data February 1998
, 2019 About this dataset: This dataset contains ionosonde data in SAO format, and covers data from February 01-28, 1998.About the Tromsø Ionosonde (1993-present): Since 1980, the ionosonde was situated at 69° 35' N, 19° 13' E at Ramfjordmoen near Tromsø ...
Tromsø Geophysical Observatory
core +1 more source
Remote Sensing, 2022 The height of the peak electron density (hmF2) and the critical frequency of the F2 layer (foF2) are very important in the research of ionospheric electrodynamics and high frequency (HF) wireless communication.
Bingbing Zhang +5 more
doaj +1 more source