COSPAR International Space Weather Action Teams (ISWAT) - H4: Space weather at planetary bodies in the Solar System

Under the umbrella of the COSPAR Panel on Space Weather, the International Space Weather Actions Teams (ISWAT) have been recently established (https://iswat-cospar.org/), where each action team chooses to address a specific focused Space Weather related task, thus providing a building block of the overall ISWAT initiative. Action teams are in turn organized into various "clusters" grouped by domain, phenomena or impact, and work in coordinated efforts to improve the scientific understanding of space weather phenomena and our society's resilience to the space weather effects. Per [Lilensten and Belehaki, 2008], "Space Weather is the physical and phenomenological state of natural space environments. Through observation, monitoring, analysis and modelling, the associated discipline aims: (1) at understanding and predicting the state of the Sun, the interplanetary and planetary environments, and the solar and non-solar driven perturbations that affect them, and (2) at forecasting and now-casting the possible impacts on biological and technological systems." The discipline of Planetary Space Weather refers to the study of the variability of planetary body environments (e.g., atmospheres, exospheres, ionospheres, intrinsic or induced magnetospheres) determined by the variability of the solar activity or/and the interplanetary space dynamics, or/and (e.g., in case of outer Solar System moons) the dynamics of the magnetosphere in which the Solar System body is embedded. The H4 Cluster specifically attempts to address space weather at planetary bodies in the solar system (except for Earth). Working with other Clusters, H4 intends to provide a scientific frame for the comparative study of different space weather phenomena at a variety of planetary bodies within our Solar System (e.g., the Earth-like planets in the inner-heliosphere and the gas and ice giants in the outer-heliosphere, including their moons). This will help understand the physical phenomena at large, pushing current Space Weather models to their limits. Ultimately in view of the new discoveries associated with exoplanets, a better understanding of the influence of space weather on different planets will help us better characterize the potential effects of different stellar environments on exoplanets and develop realistic scenarios on climate evolution and potential habitability of those exoplanets. Synergies between solar physics, heliophysics, planetary sciences, and stellar physics communities can improve our ability to understand (and possibly predict) Space Weather in the Solar System or beyond. This presentation is to provide a brief summary of the proposed H4 activities related to the space weather at planetary bodies in the solar system in close collaborations with other Clusters in the ISWAT.