EISCAT Tromsø Dynasonde

Ionospheric Results:

DSND analysis

Realtime Tromso: and Svalbard

Latest sounding (DSND analysis) and database
The older DSND analysis (to be phased out).
The links below are also from the older DSND.
Critical frequencies in a 24/48-hr plot.
Vector velocities in a 24/48-hr plot

Plot archives from DSND analysis:

Previous 24-hr critical frequency plots.
Previous 24-hr vector velocity plots.

The now static NOAA site

'Raw' analysis

Realtime Tromso: and Svalbard

Latest ionogram, also self-updating.
Colour plot of plasma freq in a self-updating 24-hr plot.

'Raw' ionogram archives:

Previous 24-hr plasma frequency plots
Previous 24-hr angle of arrival (n-s) plots
Daily zipped archives of individual 'raw analysis':
ionograms (with polarization in colour)
and skymaps (with Doppler in colour).

Raw sounding files
Latest neighbouring digisonde ionogram

Mesospheric Results:

Imaging Doppler Interferometery (IDI) is usually running between ionospheric B-mode soundings above.

Quasi-realtime results:

latest IDI results (postscript file)
Backscattered power plot (postscript file)

mesospheric archives:

other files in the IDI directory

Further Dynasonde Information

More on Tromso sounder

Data quality comment on present soundings.
Diary of events
Listing of CD-ROM archive of raw soundings.
Pictures of the Tromsø Dynasonde and the old page.
Disk space.

General information and other sounders

NOAA pages with realtime soundings of Bear Lake (Utah) and Tromsø,
and a complete dynasonde bibliography.