A critical factor in successfully monitoring and forecasting volcanic ash dispersion for aviation safety is the height reached by eruption clouds, which is affected by environmental factors, such as wind shear and atmospheric instability. Following earlier work using the Active Tracer High...

In areas prone to natural hazards, a key goal of risk management is mitigating risk by encouraging people to adopt protective measures. Despite the efforts of civic emergency management agencies, the goal of ensuring the sustained adoption of these measures has proved elusive. This paper argues...