Hello group,
I was re-reading the chapter on propagation in an
RSGB book on Operating Practice, and it said that the ionisation of our
precious F layers (and also the D absorbtion layer) was caused by Extreme UV
radiation. This is wavelengths 120nm up to 10nm.
We monitor the solar wind and solar flares to try
and predict what changes in propagation will occur, but these things seem
mainly to be negative influences on propagation - things which disrupt the
propagation.
It would be nice to monitor the EUV levels from the
Sun as well...
so my question is really "does anyone know of
a source of Internet data for this
radiation?"
