Grímsvötn Volcano Eruption

Aura's OMI ultraviolet aerosol index allows volcanic ash to be detected over clouds whereas this is more difficult with a visible image.

The Eruption started in Gíimsvötn (southeast Iceland) on May 21 at 17:30UTC. The plume height had risen to an altitude ~20km.

Sulfur dioxide (SO₂) and ash plumes are being monitored via the OMI very fast delivery system (direct broadcast) from the FMI website as well as the NOAA near-real-time system MODIS RGB is from the MODIS Rapid Response

MODIS and OMI views of Icelandic Grímsvötn eruption May 22, 2011

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5.21.2011