COST

Introduction to the workshop - Sara Barsotti

Session 1

Procedures currently in use for communicating to aviation in case of an explosive eruption: the SIGMET and its significance - Elin Bjork Jónasdóttir, IMO)

The VAACs: how they evaluate uncertainty in their models; example from London - Matthew Hort, UK MET Office

The VAACs: how they evaluate uncertainty in their models; example from Toulouse - Mathieu Deslandes, Toulouse VAAC

Session 2

The stakeholders (air service providers): how they use information received, and what are their specific needs - Steinunn A. Arnardottir, ISAVIA

The stakeholders (airlines): how do they use the information received and how they draw a Safety Risk Assessment (SRA) - Icelandair

Uncertainties in eruptive scenario definition and eruption source parameters estimation - Magnus Tumi Guomundsson, University of Iceland

Recommendations from VASAG: visible and discernible ash concept and its use for aviation safety - Larry Mastin, USGS

Session 3

Recap of the summary and outcomes from the exercise - Melissa A. Pfeffer, IMO

Uncertainty during volcanic crises - Sarah Ogburn, USGS

Efficient forecasting of volcanic ash clouds - Roger Denlinger, USGS

Expert judgement: for which sources of uncertainty can we use it (model results, input parameters)? Who are the experts? - Ellie Scourse, University of Bristol

Session 4

How to visualize and represent spatially the uncertainty in the volcanic ash dispersal - Simon French, University of Warwick

Discussion & conclusions