International aviation guidelines suggest complete avoidance of ash-contaminated airspace due to its hazardous impact on aircrafts and jet engines. In 2010, however, the eruption of the Eyjafjallajökull volcano memorably demonstrated the limits of this ...

Volcanic ash in the atmosphere is a hazard to aviation. To predict which areas of airspace are most likely to be affected by the presence of ash, Volcanic Ash Advisory Centers (VAACs) use observations and atmospheric dispersion models. These models are ...