from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A radar for the examination of the ionosphere.
Sorry, no etymologies found.
It is found that Te at F2-region altitudes become almost independent of electron heat flows along B above the Huancayo, Chiclayo, and Talara ionosonde stations because of the near-horizontal B inhibits the heat flow of electrons.
The morning Te peaks which are found above the ionosonde stations at hmF2 altitudes are explained by the sunrise physical processes.
On February 12 the approximate sunrise at the ionosonde is at 1402z and sunset at 0028z.
Of more general interest, the Millstone station resumed posting ionosonde readings for a couple weeks, though not continuous, but has discontinued the postings.
You will see less effect this time of year in the Northern Hemisphere, as seen at a record of ionosonde data in Italy here, you will see similar data taken in the UK.
Issue one is a long-term effort (over one month) to correlate a solar index to data from one ionosonde, and issue two is a short-term effort (daily, hourly) to correlate a solar index to data from many widely separated ionosondes that don't agree very well with each other at the same time of day. "
"The Australian IPS Radio and Space Services offer several maps that attempt to depict interpolated propagation conditions, based on ionosonde measurements.