What frustrates me at the moment is how we as pilots are supposed to be the experts in our field i.e flying aircraft and jump down anyones throat on here who dares suggest otherwise and yet many on here feel that it is ok to question the competence of the experts in other fields such as Met and Nats. I am no expert on volcanic eruptions and so am more than happy to listen to those who are and are basing their decisions on the best available data and models.