Next Talk: 31 May 2024 15:00 CEST

 

Speaker: Prof. Mauro Messerotti

INAF-Astronomical Observatory of Trieste

University of Trieste, Department of Physics

INFN, Trieste Division, Italy

 

Prompt Impact of Solar Radio Emissions on Radio Systems in Geosphere

The Sun is a source of broad- and narrow-band radio emissions generated by coherent and incoherent processes that occur in the atmospheric plasma both in the absence and presence of Active Regions. These radio phenomena determine the state of Solar Radio Weather.

Under perturbed solar conditions, the intensity of solar radio emissions can increase by several orders of magnitude with respect to the quiet radio Sun emissions.

The emitted solar radio waves reach the Earth in about 8.3 minutes and can promptly and directly interfere with a variety of radio communication systems located in Geosphere such as, e.g., GNSS receivers, radars, and radio receivers in the sunlit Earth's hemisphere.

The typical impact is a significant decrease in the Signal-to-Noise Ratio in the radio receivers to make it impossible to use them for the duration of radio interference that can be a few minutes but also hours.

In this webinar, we will provide a synthetic picture of solar radio emissions and their impacts on radio communication systems. We will also highlight the key role of their monitoring and the difficulty or impossibility of their prediction with particular regard to existing networks for monitoring and forecasting Space Weather.

 

 

To join the webinar simply click on this link

 

 

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