A multi-sensor plume height analysis of the 2009 Redoubt eruption

► Different methods of volcanic plume height determination give different altitudes. ► The basic satellite temperature method underestimates true plume top heights. ► Radar and stereo methods for plume height determination are quite accurate. ► Data fusion is the best way to accurately determine plume top height. ► Accurate plume top height allows for more accurate ash dispersion forecasts.