Atmospheric ionization and space-earth interactions
by
Sala de Conferências
Departamento de Física FCTUC
Several phenomena in the Earth’s system reflect interactions between the planet Earth, its star, the Sun, and even the space beyond. The Earth’s ambient radioactivity, and the Earth’s electric field, are examples of such phenomena resulting from the interplay of Earth and space physical processes.
In this talk I will focus on atmospheric ionization, which is strongly determined by both ambient radioactivity near the Earth’s surface and cosmic radiation, and which in turn influences Earth’s electrical properties and thus Earth’s climate. As ions and aerosols are a key factor and currently one of the largest sources of uncertainty in climate science, improving understanding on the Earth’s global electric circuit and on the physical processes influencing it is a key scientific objective. I will review basic concepts on environmental radioactivity and atmospheric electricity, and I will present recent field campaigns that have been performed for measuring ambient radioactivity and the electric field both on land as well as over the Atlantic Ocean.
Short bio
Susana Barbosa is a senior researcher at INESC TEC (Porto, Portugal) working as a data scientist at the interface of data science, earth system science, and robotics. She has a degree in Physics/Applied Mathematics (Astronomy), a master degree in Computational methods, and a PhD in Surveying Engineering from the University of Porto. Her research is highly interdisciplinary, with a strong emphasis on the analysis of time series in the scope of climate and earth system science. Her current research interests focus on the study of space-earth interactions.
Ligação remota disponível via Zoom:
https://videoconf-colibri.zoom.us/j/81310717360?pwd=OUhFb21paEhaOUE0cTVjZE1wdWQ4QT09
ID da reunião: 81310717360
Senha: 055056
Filipe Veloso e Pedro Costa
