Improving communication between volcano observatories and volcanic ash advisory centres in Europe—outcomes from a first workshop

Abstract Effective aviation response to atmospheric emissions from volcanic eruptions relies upon timely communication and information exchange. To explore the current and best practices in this area, a workshop was held in February 2019 under the framework of the European H2020 EUROVOLC project (2018–2021). The objective of the workshop was to bring together the volcano observatories (VOs), volcanic ash advisory centres (VAACs), and volcanological research institutes in Europe. The workshop included scientists and operational staff from six of Europe’s VOs (Iceland, Italy, France, Spain, Portugal, and Greece), the London and Toulouse VAACs, and seven supporting institutions and organisations. During the workshop, participants identified future improvements to the way the VOs and VAACs communicate and share information. Recommendations include refining the guidance and local documentation on the correct use of the Volcano Observatory Notice for Aviation (VONA), improving the two-way feedback between the VAAC and VOs, regular sharing of volcano status updates by the VO, and inclusion of all VOs in regular VAAC and aviation exercises. These are applicable to VOs and VAACs elsewhere in the world.