This VA will allow anonymous access through a web interface to (i) a database of SO₂ flux time series and plume heights from previously collected satellite images of SO₂ plumes and (ii) real-time updates of SO₂ flux time series and plume heights from newly collected satellite images of SO₂ plumes. By providing an easy to use access portal to these data we will open up these data to scientific communities who are not equipped to work on SO₂ imagery, but who are interested in volcanic eruptions and processes. This will greatly enhance the scientific output arising from the satellite imagery and allow the focus to move from technical challenges to volcanic process questions. Provision of access to the following infrastructure: Anonymous access will be provided through a web portal. Description of the infrastructure Satellite-based SO₂ flux time series database Location of the infrastructure: Manchester, UK Web site address: www.manchester.ac.uk/sees Annual operating costs (excl. investment costs) of the infrastructure (€): €40k, salary and overheads Description of the infrastructure: This will be a new infrastructure that will provide user access to previously unavailable SO₂ flux time series and plume heights. This capacity arises from state of the art research which has been conducted in the MED-SUV (http:// med-suv.eu/) and ERC CO₂Volc (http://cordis.europa.eu/project/rcn/101001_en.html) projects. The communities who will use these data are volcano observatories, risk managers, process-driven volcanologists, volcano modellers and the general public. The algorithms used are complete and have been rigorously tested through comparison with groundbased observations (Pardini et al., Retrieval and intercomparison of volcanic SO₂ injection height and eruption time from satellite maps and ground-based observations, JVGR, 2016, http://dx.doi.org/10.1016/j.jvolgeores.2016.12.008). A series of eruptions have been analysed and more are added every week producing an ever-growing database of previous eruptions. Within this project, we will initially produce a web server front end to allow users to access the previously analysed database (MS42 at month 12), which will be supported on a back end. This will be enhanced during the project by a fully-automated system which will produce new SO₂ time series in real-time for SO₂ images of volcanic plumes world-wide (MS43 at month 18). Services currently offered by the infrastructure: As this is a state-of-the-art algorithm the physical infrastructure does not yet exist, and will be produced within the EUROVOLC project. The data produced by our infrastructure are not currently available, but will be of great utility for volcano researchers and risk managers world-wide whenever a new eruption occurs. There will be direct benefit for example to other WPs within EUROVOLC, e.g. WP8 and WP10. The archived data which will be available initially will be of use to volcanologists interpreting volcanic processes driving volcanic activity and will allow new breakthroughs in understanding through integration with geophysical data.