A new conceptual model is presented for engagement in citizen science and for integrating earth observation and citizen science worldwide. The related novel strategies for citizen engagement consist of three components: (1) consolidation and expansion of existing citizen observatories and citizen-science projects; (2) recruitment of new citizen observers from society at large; and (3) improvement of knowledge transfer and capacity building through the formation of local leaders to strengthen local-community networks. This model (1) fulfils the need to demonstrate engagement in each citizens' observatory, (2) provides the necessary engagement and training tools, and (3) results in a consistent, scalable approach to citizen science worldwide. It includes novel training materials and ‘Train the trainer’ workshops, which provide skill development for citizen-science leaders, viz., in: engaging and retaining volunteers; field management (risk assessment and emergency response plan); engaging stakeholders; selecting, designing and developing specific activities (e.g., bioblitzes, DIY workshops, species surveys, volunteered-geographic-information workshops); and monitoring these activities. Online training materials are developed as supporting documentation to the face-to-face training workshops. Additionally, guidelines on how to start a new citizen-science observatory are produced and best practices provided for technical tools, enabling rapid idea-to-realization related to geographic information and standardized environmental observations. The adaptability of workshop materials to specific citizen-science projects using a co-created approach demonstrates the applicability across a range of stakeholders and audiences. Monitoring technologies are used to develop citizen engagement activities, with data to be collected, interpreted and managed using advanced analytical techniques. Business plans to involve entrepreneurs into citizen science as a way to enhance economic sustainability are also developed. The proposed strategies are used to demonstrate how to engender massive, long-term and global participation.

1. Citizen engagement_
1000001 Labs: Luigi Ceccaroni | Elena Jurado | Fabrizio Latrofa
Earthwatch Europe: Neil Bailey | Jenny Cousins
CREAF: Bernat Claramunt
Institut de Ciències del Mar (ICM-CSIC): Jaume Piera
University of Oldenburg: Oliver Zielinski
Jacobs University Bremen: Julia A. Busch
First International ECSA Conference 2016, Berlin, May 20th

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