Results 71 to 80 of about 2,902 (228)
TGO Ramfjordmoen Ionosonde Data January 2012
, 2019 About this dataset: This dataset contains ionosonde data in SAO format and ionograms in PNG format, and covers data from January 01-31, 2012.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
AtmosphereKnowledge of ionospheric plasma altitudinal distribution is crucial for the effective operation of radio wave propagation, communication, and navigation systems.
Iurii Cherniak +7 more
doaj +1 more source
Ionospheric Effects on Maximum Usable Frequency for a Cross‐Auroral and a Polar Cap HF Radio Link
Radio Science, Volume 61, Issue 5, May 2026.Abstract Maximum usable frequency (MUF) is an important indicator of the ability of the ionosphere to support over‐the‐horizon propagation of high frequency (HF) radio waves. MUF depends on the location of the transmitter and receiver, and the structure of ionospheric electron density.
T. G. Cameron +2 more
wiley +1 more source
TGO Ramfjordmoen Ionosonde Data September 1996
, 2019 About this dataset: This dataset contains ionosonde data in SAO format, and covers data from September 01-30, 1996.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
Introducing Reflected GNSS TEC Data Into ANCHOR Ionospheric Data Assimilation Model
Space Weather, Volume 24, Issue 5, May 2026.Abstract ANCHOR is a novel data assimilation (DA) algorithm developed at the U.S. Naval Research Laboratory to improve ionospheric nowcasting by increasing accuracy and decreasing computational cost. As a parameterized DA model, ANCHOR represents the ionosphere using physical parameters such as the F2 layer peak (Nm $Nm$F2), which characterizes a ...
Brenna Royersmith +5 more
wiley +1 more source
TGO Ramfjordmoen Ionosonde Data May 1998
, 2019 About this dataset: This dataset contains ionosonde data in SAO format, and covers data from May 01-31, 1998.About the Tromsø Ionosonde (1993-present): Since 1980, the ionosonde was situated at 69° 35' N, 19° 13' E at Ramfjordmoen near Tromsø, Norway and
Tromsø Geophysical Observatory
core +1 more source
TGO Ramfjordmoen Ionosonde Data November 2022
, 2022 About this dataset: This dataset contains ionosonde data in SAO format and ionograms in PNG format, and covers data from November 01-30, 2022.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
Space Weather, Volume 24, Issue 5, May 2026.Abstract This study evaluates 17 ionospheric models' performance over the Continental United States (CONUS) during the 2024 Mother's Day geomagnetic storm, using ground‐based GNSS Total Electron Content (TEC) and single‐frequency (SF) precise Single Point Positioning (SPP) technique. The storm produced significant positive storm effects during its main
Min‐Yang Chou +15 more
wiley +1 more source
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract On 20 January 2024, a deep‐focus earthquake (Mw 6.6, depth 607 km) struck near Tarauacá, Brazil, within the subducted South America Nazca Plate. Although it produced no surface damage, the event generated clear co‐seismic ionospheric disturbances (CSIDs) detectable in GNSS‐based Total Electron Content (TEC) data from the Brazilian RBMC network.
Oluwasegun M. Adebayo +3 more
wiley +1 more source
TGO Ramfjordmoen Ionosonde Data October 2010
, 2019 About this dataset: This dataset contains ionosonde data in SAO format and ionograms in PNG format, and covers data from October 01-31, 2010.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