The phrase "ash plume" is correct and usable in written English.
It can be used to describe a cloud of ash that is emitted during a volcanic eruption or other similar events.
Example: "The ash plume from the volcano rose high into the atmosphere, affecting air travel in the region."
Alternatives: "ash cloud" or "volcanic ash plume".
Australia's Bureau of Meteorology said the ash plume had risen to 9,144m.
Within days of the blast, the ash plume extended over western Canada and several western U.S. states.
Ireland, directly in the path of the ash plume, found itself at the center of the air travel crisis.
The pope was able to make the trip Saturday because the skies above Rome were still clear of the ash plume covering much of Europe.
The Met Office said yesterday: "The Eyjafjallajökull volcano is still erupting, and possibly intensifying, with the ash plume rising to 30,000ft.
"The ash plume is at a very low level and we're not comfortable flying at those levels," said Virgin Australia spokeswoman Danielle Keighery.
According to the Philippine Institute of Volcanology and Seismology, Mayon was in peak form on Thursday, shooting an ash plume into the sky nearly 2 miles high.
Ansmann, A. et al. The 16 April 2010 major volcanic ash plume over central Europe: EARLONET lidar and AERONET photometer observations at Leipzig and Munich, Germany.
This paper presents an end-to-end framework for generating a probabilistic approach to ash plume forecasting.
The Icelandic Meteorological Office and Institute of Earth Sciences at the University of Iceland said Sunday that it had detected three small earthquakes beneath the volcano and "unusually" high lightning activity in the ash plume.
The latest chemical analyses of ash explain how Eyjafjallajökull switched without warning from quiet lava to plane-grounding ash plume.
