This technical report summarizes the GLOBE Observer dataset from 1 April 2016 to 1 December 2019. GLOBE Observer is an ongoing NASA-sponsored international citizen science project that is part of the Global Learning & Observations to Benefit the Environment (GLOBE) Program. GLOBE Observer is the largest citizen science project in the Earth Science Division at NASA. Participants use the GLOBE Observer mobile app (launched in 2016) to collect atmospheric, hydrologic, and terrestrial observations. 38,000 participants have contributed 320,000 observations worldwide, including 1,000,000 geotagged photographs. It would take an individual more than 13 years to replicate this effort. Comparing the same data types between the GLOBE Observer app and the formal GLOBE Program, the app doubled data volume and substantially increased geographic coverage over the study period. GLOBE Observer data are publicly available at observer.globe.gov.

The NASA Earth Science Education Collaborative (NESEC) project has the goal to enable broad participation in authentic NASA Earth Science STEM experiences for lifelong learners. These experiences include citizen science through GLOBE Observer (part of the international GLOBE Program), student investigations and research projects, field campaigns, and internships (including both virtual and in-person participation). NESEC works with strategic partners to develop, deliver, and strengthen these experiences. The 2020 pandemic required shifting our approach to adapt and emphasize ways to participate that did not require going outdoors and could be undertaken from home. These resources included activities, not requiring special equipment and using materials that can be found at home. Activities were that work well with families – including different ages and generations – and encourage exploration, play, and building curiosity together about science and the environment. NESEC leverages partnerships with informal education providers, in particular libraries, which This presentation discusses results of field testing with families and emerging evidence of best practices for partnerships and resources to support science and learning at home.