Dust devils are like miniature tornadoes, they form when a pocket of hot air near the surface moves fast upward and meets cooler air above it. As the air rapidly rises, the column of hot air is stretched vertically, thereby moving mass closer to the axis of rotation, which causes intensification of the spinning effect by conservation of angular momentum. In the Atacama Desert [in Chile] they are r ...[Read More]
Imaggeo on Mondays: Dust devil sighting in the Atacama Desert
Dust devil in Atacama desert. Credit: Rita Nogherotto (distributed via imaggeo.egu.eu)