Geoscience Communication (GC) is a not-for-profit journal to help share knowledge and give more "traditional" recognition to science communication in the geosciences. Science communication is used as an umbrella term by GC to cover all aspects of outreach, public engagement, widening participation, knowledge exchange, and any other initiatives within the scope of the journal. It can be thought of as any initiative which seeks to communicate an aspect of geoscience to a wider audience than the experts within that particular field.
An editorial written by the executive editors, and which explains in detail how to prepare a manuscript for Geoscience Communication, can be found here: https://www.geosci-commun.net/1/1/2018/