ST
Solar-Terrestrial Sciences

solar activity

Decoding the Sun’s Past: Dr. Theodosios Chatzistergos, 2024 e-SWAN Alexander Chizhevsky Medalist, on his Scientific Journey

April 1, 2025
Decoding the Sun’s Past: Dr. Theodosios Chatzistergos, 2024 e-SWAN Alexander Chizhevsky Medalist, on his Scientific Journey
Dr. Theodosios Chatzistergos receiving his award during the ceremony at the European Space Weather Week in Coimbra, Portugal. Photo courtesy of Dr. Setareh Jamali Jaghdani.

1. Congratulations on receiving the e-SWAN Alexander Chizhevsky Medal for outstanding contributions to space weather and space climate. How does this recognition reflect your work and impact in the field? Thank you! I am deeply honored to receive this award, which recognizes not just my work but the collective efforts of many collaborators over the years. My research has focused on reconstructing ...[Read More]

AGATA: Advancing Polar Science through Multi-Instrument Integration and Collaboration

March 11, 2025
AGATA: Advancing Polar Science through Multi-Instrument Integration and Collaboration

Scientific research has long recognized that solar-terrestrial interactions play a crucial role in shaping the polar atmosphere, impacting both climate dynamics and atmospheric coupling across different layers. Understanding these interactions is key to unraveling their far-reaching effects on Earth’s climate, space weather, and global atmospheric processes. The recognition of these critical proce ...[Read More]

Cosmogenic Radionuclides – The quest of studying the solar activity of thousands of years

September 18, 2018
Cosmogenic Radionuclides – The quest of studying the solar activity of thousands of years
Figure 1: Sketch of the processes involved in order to model the atmospheric production of the cosmogenic radionuclides. Courtesy K. Herbst

Thanks to the invention of the Neutron Monitor in 1948 and multiple spacecraft which monitor the cosmic ray environment since 1970’s we now have a constant record of the solar activity over almost 70 years. Information prior to this space era, however, are rare and take us back in time only to the late 1930s, when ionization chambers have been introduced. This of course allows us only a narr ...[Read More]