Volcanoes

Overview

Volcanic ash can damage aircraft and disrupt air traffic. Agencies around the world track volcanic clouds and issue alerts to the aviation community. Now data from NASA earth-observing satellites is improving the ability to detect and forecast the hazard to aviation from volcanic clouds.

 

Latest Updates

November 30, 2017
MODIS True Color Terra Image
Imagery Acquired November 27, 2017 This RGB image from MODIS/Terra on November, 27th shows the presence of ash vented out from the Agung volcano as gray and brownish areas above clouds and/or water. This contrasts with the whiter clouds on the left side of the image.
November 30, 2017
SO2 emission map
Acquried November 29, 2017 Figure 1 shows volcanic sulfur dioxide (VSO2) plume emitted from the eruption of Mt. Agung (Bali, Indonesia) and first captured by Aura/OMI and SNPP/OMPS UV spectrometers afternoon overpasses on November 26 2017, just hours after the beginning of the explosive magmatic phase of the eruption. The data show total SO2 column amounts in Dobson Units (1 DU = 2.69 1016 molecules SO2 per cm2). Background SO2 concentrations in this location are...
January 3, 2017
The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this image on January 3, 2017.
The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this image on January 3, 2017. It was loud and brief. For a few minutes around 9 p.m. on January 3, 2017, Alaska’s Bogoslof volcano let loose an explosion. According to the Alaska Volcano Observatory, cloud-top temperatures indicate the volcanic plume may have reached as...
April 3, 2016
The Moderate Resolution Imaging Spectroradiometer (MODIS) instruments on NASA’s Terra and Aqua satellites acquired this image of the ash plume at 11:45 a.m. Alaska time (21:45 Universal Time) on March 28, 2016.
The Moderate Resolution Imaging Spectroradiometer (MODIS) instruments on NASA’s Terra and Aqua satellites acquired this image of the ash plume at 11:45 a.m. Alaska time (21:45 Universal Time) on March 28, 2016. In late March 2016, Pavlof volcano on the Alaskan Peninsula began erupting again for the first time since November 2014. Alaska’s most active volcano has erupted six times since 1996 and 21 times in the past 50...