Results 81 to 90 of about 2,902 (228)
TGO Ramfjordmoen Ionosonde Data February 2020
, 2020 About this dataset: This dataset contains ionosonde data in SAO format and ionograms in PNG format, and covers data from February 01-29, 2020.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
Assessment of Global Ionospheric Maps Performance by Means of Ionosonde Data
Remote Sensing, 2020 This work presents a new method for assessing global ionospheric maps (GIM) using ionosonde data. The method is based on the critical frequency at the F2 layer directly measured by ionosondes to validate VTEC (vertical total electron content) values from
Gabriel O. Jerez +4 more
doaj +1 more source
Multi‐Decadal Trends in the Low Latitude foF2 Driven by Secular Magnetic Variations
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract Long‐term ionospheric trends have been widely studied, but their origin and magnitude remain subjects of debate. This study quantifies the linear trend in the F2‐region critical frequency (foF2) and its local time dependence using observations from eight low‐latitude ionosonde stations.
D. Singh +4 more
wiley +1 more source
The new CAS-DIS digital ionosonde
Annals of Geophysics, 2013 A high quality digital ionosonde called the Chinese Academy of Sciences digital ionosonde (CAS-DIS) has been developed for investigations of the ionosphere. Two important features are used for the CAS-DIS; first, the technique of analog down-conversion has been replaced by the new approach of digital down-conversion technology.
Wang Shun +3 more
openaire +3 more sources
TGO Ramfjordmoen Ionosonde Data March 2003
, 2019 About this dataset: This dataset contains ionosonde data in SAO format and ionograms in PNG format, and covers data from March 01-31, 2003.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
Automatic Real‐Time Ionogram Scaling Method for Global Ionosondes Using Artificial Intelligence
Space Weather, Volume 24, Issue 5, May 2026.Abstract An ionosonde is an instrument used for local ionosphere remote sensing observations and has the longest history and widest global distribution. Ionograms observed by ionosondes, which depict the electron density profile as a function of virtual height, are critical for ionospheric modeling accuracy and space weather nowcasting.
Peng Liu +6 more
wiley +1 more source
TGO Ramfjordmoen Ionosonde Data April 2016
, 2019 About this dataset: This dataset contains ionosonde data in SAO format and ionograms in PNG format, and covers data from April 01-30, 2016.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
TGO Ramfjordmoen Ionosonde Data September 2006
, 2019 About this dataset: This dataset contains ionosonde data in SAO format and ionograms in PNG format, and covers data from September 01-30, 2006.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
Учёные записки Казанского университета: Серия Физико-математические науки, 2019 One approach to determining the height structure of the mid-latitude medium-scale travelling ionospheric disturbances (MSTIDs) above the F layer peak is to involve simultaneous satellite measurements in the ground-based ionosonde measurements near Kazan.
A.D. Akchurin, G.S. Smirnov
doaj +1 more source
TGO Ramfjordmoen Ionosonde Data December 2014
, 2019 About this dataset: This dataset contains ionosonde data in SAO format and ionograms in PNG format, and covers data from December 01-31, 2014.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