espas-fp7.eu
Data Providers
http://www.espas-fp7.eu/index.php/community/dataproviders
Presentations, posters and other Media. ESPAS will provide access to the following diverse databases and data collections listed in the table below:. Near-Earth space data from ground-based sensors and instruments. Ionosonde parameters, ionograms, European maps of critical frequencies. Usable frequencies for HF communications and ionograms. Tromsø, Gibilmanna, Sodankylä, Warsaw, Hornsund. Vertical sounding parameters and ionograms. EISCAT incoherent scatter radars. Ionosonde parameters, ionograms. Plasma...
ngdc.noaa.gov
Dynasonde Home | NCEI
http://www.ngdc.noaa.gov/stp/IONO/Dynasonde
The header and web page search is in an undisplayed frame - follow this link to view it. Explore from this site the current state of the ionosphere over several participating observatories. Interactive graphics on the following pages give detailed information for the present time and for the preceeding 48 hours, from advanced ionospheric sounding instrumentation and data processing methods. Real time data analysis by Dynasondes. San Juan, PR Dynasonde. Results of special campaigns and studies.