The Chaitén volcano in Chile has produced quite a bit of ash and aersols.
Two new satellite images of Chaitén in eruption have been made available at the NASA Earth Observatory Natural Hazards web site.
The images were takenon May 5th, by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite and show the eruption plume from the volcano extending east for 650 kilometers across Chile and Argentina. The satellite pictures below show the plume spanning the entire width of South America, the blue dot marks the location.
If you look closely, you can see a grey coating of ash visible on the surface.
Chaitén volcano eruption – visible light image
Chaitén volcano eruption – infrared + visible composite image
The distinction between ash on or near the ground, the volcanic plume, and clouds is more evident in the lower infrared composite image. This image was made with a combination of infrared and visible light. Consisting of ice crystals and water vapor, the clouds are turquoise (ice) laced with white (water vapor). The warmer plume of ash and steam is white. The ash on or near the ground is a semi-translucent white. Hints of plant-covered land (bright green) are visible through the ash.