Ash Plumes

MODIS imagery are useful for identifying and tracking ash plumes from volcanic eruptions. The use of NRT satellite data for monitoring volcanic plumes is undergoing further developments to enable quantitative retrievals to be produced, which should enable a global capability for volcanic ash monitoring to be introduced.

Potentially useful data sets: MODIS Corrected Reflectance True Color, MODIS Aerosol, AIRS Visible/Near-IR Radiances and Brightness Temperatures and OMI Sulfur Dioxide (SO2) (total column).

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Worldview showing Sulphur Dioxide emissions (Middle Troposhere) from the Bardarbunga volcano, Iceland

Visualize NRT data related to Ash Plumes in Worldview

Worldview showing Sulfur Dioxide emissions (Middle Troposphere) from the Bardarbunga volcano, Iceland. Read more at NASA's Earth Observatory.

MODIS / Aqua

Product
(FTP download link)
Description
(Global Change Master Directory link)
Volume
(GB/day)
Browse Comments
MYD04_L2 L2 Aerosol, 5-Min Swath 10km 0.16 L2 Aerosol Browse N/A
MYD09GA L2G Light Surface Reflectance – Daily 500m and 1km 17.37 L2G Surface Reflectance Browse Bands 1-4-3 & 7-2-1
MYD09GQ L2G Light Surface Reflectance – Daily 250m 18.82 L2G Surface Reflectance Browse Bands 1-4-3 & 7-2-1
MYD09GHK L2G Surface Reflectance – Daily 500m 18.27 N/A Bands 1-4-3 & 7-2-1
MYD09GQK L2G Surface Reflectance – Daily 250m 25.48 N/A Bands 1-4-3 & 7-2-1

MODIS / Terra

Product
(FTP download link)
Description
(Global Change Master Directory link)
Volume
(GB/day)
Browse Comments
MOD04_L2 L2 Aerosol, 5-Min Swath 10km 0.15 L2 Aerosol Browse N/A
MOD09GA L2G Light Surface Reflectance – Daily 500m and 1km 17.48 L2G Surface Reflectance Browse Bands 1-4-3 & 7-2-1
MOD09GQ L2G Light Surface Reflectance – Daily 250m 18.91 L2G Surface Reflectance Browse Bands 1-4-3 & 7-2-1
MOD09GHK L2G Surface Reflectance – Daily 500m 18.34 N/A Bands 1-4-3 & 7-2-1
MOD09GQK L2G Surface Reflectance – Daily 250m 25.31 N/A Bands 1-4-3 & 7-2-1

AIRS / Aqua

Product
(FTP download link)
Description
(Global Change Master Directory link)
Volume
(GB/day)
Browse
AIRVBRAD_NRT L1B Vis/Near-IR geolocated radiances N/A N/A
AIRABRAD_NRT L1B AMSU-A1 & AMSU-A2 combined, geolocated & calibrated brightness temperatures N/A N/A

OMI / Aura

Product
(FTP download link)
Description
(Global Change Master Directory link)
Volume
(GB/day)
Browse
OMSO2NRTb L2 Sulphur Dioxide (SO2) Total Column Swath 13x24 km N/A N/A

MLS / Aura

Product
(FTP download link)

Description
(Global Master Change Directory link)

Volume (GB/day) Browse
ML2SO2_NRT.003 Sulfur Dioxide (SO2) MLS/Aura NRT L2 SO2 Mixing Ratio 0.02 N/A

 

 

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