To address complex geoscience questions, communities with a variety of experiences and perspectives are needed in local workplaces and institutions across academia and government. To achieve this goal, geoscience needs leaders who are champions of diversity who have positive attitudes towards others and act upon these attitudes to become change agents in advancing diversity and creating inclusive environments. We established a professional-development workshop, GOLD Institutes (GOLD: Geo Opportunities for Leadership in Diversity), to provide geoscience leaders with the tools and skills necessary to be self-reflective of their own ideas and to promote diversity, equity, and inclusion in their respective institutions. Our objective was to equip senior geoscientists, who are at the core of local communities of practice (CoPs), with knowledge of diversity, equity, and inclusion theories and practices to lead change across the discipline. In this preliminary report, we investigate institute participants' perceptions of allophilia (love of the other) and identify actions taken by senior geoscientists to promote diversity, equity, and inclusion within local CoPs. Results indicate that senior geoscientists who participated in the institute had high scores on the Allophilia Scale and took steps to integrate diversity, equity, and inclusion into their day-today activities, and in a few cases created new workplace support structures for diversity and inclusion. Future work will build upon these results by refining professional-development opportunities that target the needs of geoscience champions of diversity. INTRODUCTION: Transformation in the geosciences is needed to improve diversity, equity, and inclusion. Reports in recent years have highlighted the lack of diverse, inclusive environments within the DEVELOPING SCIENTISTS AS CHAMPIONS OF DIVERSITY 3 geosciences. Some of these reports emphasize representation and diversity. For example, the National Science Foundation's National Center for Science and Engineering Statistics reported that only 43% of the doctoral degree recipients in Earth, atmospheric and ocean sciences in 2012 were women (National Science Foundation, 2013). Furthermore, less than 5% of doctoral graduates were Black, Hispanic, American Indian, or Alaska-natives, combined (National Science Foundation, 2013). Also, Cech (2015) reported that lesbian, gay, bisexual and transgender (LGBT) individuals are underrepresented across the entire federal workforce. In addition to diversity and representation, numerous studies have shown prejudice and harassment are common in geoscience workplaces (e.g., Cech & Waidzunas, 2011; Fouad & Singh, 2011), leading to "chilly" workplace climates that act as barriers to the full inclusion and participation of individuals from underrepresented backgrounds. Bernard and Cooperdock (2018) conclude: "We will limit the science we do if we do not become more inclusive. We need to do better" (p. 295). Many efforts to improve diversity and inclusion have focused on the pathways of st...