To further improve the quantitative forecasting ability of high-frequency (HF) communication
frequency, we propose a maximum usable frequency (MUF) adaptive forecasting method …

Our objective is to review recent advances in ionospheric and thermospheric modeling that
aim at supporting space weather services. The emphasis is placed on achievements of …

This paper is a final review of the Simplified Ionospheric Regional Model (SIRM) developed
as a prototype in the early 1990s and improved in the following years. By means of an …

The performances of Autoscala and ARTIST 4.5 were comparatively evaluated using a large
database of 6098 ionograms recorded from September 2005 to June 2006 by the digisonde …

Half-hourly values of the critical frequency of the ionospheric F region, foF2, obtained at
Wuhan Ionospheric Observatory (geographic 114.4° E, 30.6° N; 45.2° dip), China, during the …

A method for mapping of ionospheric conditions over Europe, suitable to be used in real
time for operational applications, is described in this paper. The method is based on the …

Characteristics of midlatitude ionospheric disturbances during several great geomagnetic
storms have been investigated using data from the European geomagnetic observatories …

This paper describes how the joint utilization of autoscaled data such as the F 2 peak critical
frequency fo F 2, the propagation factor M (3000) F 2, and the electron density profile coming …

The three-dimensional (3-D) electron density representation of the ionosphere computed by
the assimilative IRI-SIRMUP-P (ISP) model was tested using IONORT (IONOspheric Ray …

To improve the accuracy of predictions and simplify the difficulty with the algorithm, a
simplified empirical model is proposed in developing a long-term predictive approach in …