Eruption of Grímsvötn Volcano, Iceland

Eruption of Grímsvötn Volcano, Iceland

Although ash from Iceland’s Grímsvötn Volcano initially remained localized, by May 24, 2011, the ash cloud had spread over the North Sea. This pair of natural-color satellite image shows a dense plume of ash between Scotland and Norway (top), and ash spreading from Iceland across the North Atlantic (lower). The London Volcanic Ash Advisory Center (VAAC) reported the ash at an altitude of 20,000 feet (6,100 meters) at 12:00 UTC, 50 minutes after the top image was acquired. According to EUROCONTROL, The European Organisation for the Safety of Air Navigation, approximately 250 flights were cancelled in the United Kingdom due to the ash, and flights in southern Scandinavia were likely to be cancelled as well.

The top image was acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Terra satellite at 11:10 UTC. The lower image was acquired several hours later, at 13:05 UTC, by the MODIS instrument aboard Aqua. In both images, the tan volcanic ash plume is visible beneath moderate cloud cover.

  1. References

  2. EUROCONTROL. (2011, May 24). Update on European air traffic situation following Grimsvötn eruption 10:00 CET. Accessed May 24, 2011.
  3. Klemetti, Erik. (2011, May 24). Grímsvötn Ash Cloud Causes Flight Disruptions (But Ryanair President Says it Doesn’t Exist). Accessd May 24, 2011.
  4. London Volcanic Ash Advisory Center. (2011, May 24). Modelled Ash Concentration. Accessed May 24, 2011.

Images & Animations

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File Dimensions

northsea_tmo_2011144.jpg
    11:10 UTC, Terra
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  • JPEG
northsea_tmo_2011144_lrg.jpg
    11:10 UTC, Terra
  • 3600x2800
  • JPEG 3 MB
northsea_tmo_2011144_geo.tif
    11:10 UTC, Terra
  • 3600x2800
  • GeoTIFF 18 MB
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  • 6800x5200
  • JPEG 5 MB
  • 6800x5200
  • GeoTIFF 55 MB

Metadata

  • Data Date:

    May 24, 2011
  • Visualization Date:

    May 24, 2011
  • Sensor(s):

    Terra - MODIS

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NASA - National Aeronautics and Space Administration