Following the Workshop, its output will be published as a volume in the Space Science Series of ISSI by Springer (see https://www.issibern.ch/publications), in parallel with the publication of the papers in a Topical Collection in Space Science Reviews. It is expected that a total of up to 15 high-quality topical review papers will result, to be submitted to the usual refereeing process and published in the book. The papers will be based on talks presented at the Workshop and will reflect the discussions that are encouraged to be held among the participants during the Workshop, with emphasis on interdisciplinarity.