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Previous soundings
Select Previous Ionospheric Soundings Data
This data selection tool is now deprecated. The functionality is available more conveniently through the Prompt Ionospheric Database. Please try it out.
You can choose to view the date/times of availability, images of previous
ionograms, the ARTIST autoscaled parameters, or true-height analysis
(using POLAN with certain
default options) on either
the autoscaled data or the manually checked data for a specified date and
station. If you retrieve a full day of ionograms the page may be quite
large; soundings are normally taken half-hourly (48 ionograms per day) but
are taken quarter-hourly (96 ionograms) during Regular World Days, and it
takes roughly a second to generate each ionogram from the raw ionosonde
data.
A basic introduction to ionosonde theory
and ionogram interpretation is
available.
Note that you will need to register to have
access to the ionograms and scaled data.
UK Solar System Data Centre