Case studies of enhanced E-layer formation at high-latitudes following sudden commencement absorption events

Ritchie, S.E.; Honary, F.

doi:10.1049/cp:20060242

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2009

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“…This is caused by an enhanced sporadic-E layer overshadowing the usual F-layer propagation paths [25]. These sporadic-E paths are known to be able to support HF communications during ionospheric storm periods and this section presents the results of research that has empirically modelled the deviations from the predicated median of f 0 E s following the onset of an ionospheric storm and provides guidance to HF communications operators for maintaining link establishment.…”

Section: Modelling Of Scamentioning

confidence: 99%

Advances in ionospheric propagation modelling at high-latitudes

Ritchie

Honary

2009

IET 11th International Conference on Ionospheric Radio Systems and Techniques (IRST 2009)

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Many services rely on the output of propagation planning tools to predict the future state of the ionosphere and the availability of suitable communications channels. While this approach is adequate for services operating at high-latitudes during quiet ionospheric conditions it is insufficient to deal with a disturbed ionosphere. This paper presents the results of empirical modelling of the changes that occur in the D-and E-regions of the ionosphere following the onset of disturbed conditions as defined by the occurrence of a storm sudden commencement.

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Section: Modelling Of Scamentioning

confidence: 99%