The Institute of Atmospheric Physics of the ASCR hosted the COST Action ES 1005 TOSCA Science meeting September 30 to October 4, 2013. TOSCA is a multidisciplinary European network of scientists from nearly 20 countries that work to provide a better understanding of the role of the Sun in climate change. This action aims at assessing the various contributions of solar variability to the Earth's climate by bringing together solar physicists, space scientists, atmospheric scientists, climate modellers, paleoclimatologists, and more. TOSCA was inaugurated in June 2011 and will last for four years. As for other COST (Cooperation in Science and Technology) actions, the main role of TOSCA is to foster interactions between different communities. (TOSCA stands for "Towards a more complete assessment of the impact of solar variability on the Earth's climate".) and Jan Laštovička a Petra Koucká Knížová.
The Institute of Atmospheric Physics of the ASCR organised the 4th IAGA/ICMA/CAWSES-II TG4 Workshop on Vertical Coupling in the Atmosphere-Ionosphere System, which was held from 14-18, 2011 in Prague. The Earth's atmospheric regions are intricately coupled to one another via various dynamical, chemical, and electrodynamic processes. However, the manner in which the couplings take place due to varying energy inputs from the Sun and from the lower atmosphere is a question that is yet to be understood. and Petra Koucká Knížová.