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Atmospheric Chemistry and Dynamics Laboratory (Code 614)

Global Sulfur Dioxide Monitoring Galleries

Sulfur Dioxide Image Galleries

TOMS images (1979-2005) | AIRS images (2003-present) | OMI images (2004-present) | OMPS images (May 2012-present) | TROPOMI images (2019-present)

TROPOMI Volcanic SO2 Image Archive

This archive is not an exhaustive list of all volcanic emissions detected by TROPOMI. Particularly large or otherwise interesting events will be posted here as time permits.

Images presented in the SO2 column will typically display retrievals from the current operational SO2 algorithm. In some cases, offline experimental algorithms may be implemented. Units are milli-atm-cm, also known as Dobson Units (DU), where 1 milli-atm-cm = 1 DU = 2.68x1016 molecules cm-2 at STP (0o degs C, 1013.25 hPa). Images in the Ash/Aerosols column show the TROPOMI Aerosol Index (AI), which is positive for UV-absorbing aerosols such as volcanic ash, and can be negative for non-UV absorbing aerosols such as sulfate. Note that the scale used varies between plots. For further information please contact us.

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| 2019 | 2020 | 2021 |

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Daily images




   ↓2021 ↓        
Fukutoku-Oba-No-Ba, Marianas Islands, Japan August 13, 2021
Aug 14
A new island is created in Japan with an ash cloud rising to 16 km. Fukutoku-Oba-No-Ba is a submarine volcano that last erupted in 2010.
Nyiragongo, DR Congo May 22, 2021
Mar 23
Mt Nyiragongo volcano in the Democratic Republic of Congo began erupting on Saturday, May 22, sending lava flows down the mountain toward the city of Goma and entering the city on May 23. At least 15 people have been killed. The lava flows have destroyed numerous houses. In an effort to evacuate the area, 3,000-5,000 residents fled to the nearby country of Rwanda. Volcanic SO2 emissions have declined since the Maww eruption - this is consistent with magma draining from the volcano into fissures on the flanks.
Soufrière, St Vincent Island Apr 9, 2021
Apr 9
Apr 10
Apr 11
Soufrière began erupting at 1241 UTC and again at 1900 UTC. The last time was 42 years.
Reykjanes, Iceland Mar 19, 2021
Mar 22
Reykjanes began erupting on March 19 for the first time in 1200 years.
   ↓2020 ↓        
Anak Krakatau, Java Apr 10, 2020
Apr 11
Apr 12
Apr 13
Anak Krakatau started erupting on during the night of April 10, 2020.
   ↓2019 ↓        
Whakaari, White Island, New Zealand Dec 09, 2019
Dec 11
Eruption started around 0209 UTC (0209pm local time) on 12/9/2019 with ash rising to 3.6 km (12,000 ft).
Ubinas, Peru Jul 19, 2019
Jul 24
Jul 19-22
Eruption started around 0735 UTC (0335 local time) on 7/19/2019 with ash risoing to 12.2 km (40,000 ft). Erupting again on 7/23/2019 with ash emissions rising to 9.3 km (31,000 feet).
Ulawun, Papau New Guinea Jun 26, 2019
Jun 26-Jul 15
Eruption started around 0700 UTC (0300 local time) on 6/26/2019 with ash rising to 19 km (62,000 ft).
Raikoke, Kurile Islands, Kamchatka Jun 21, 2019
Jun 22
Jun 23
Jun 24
Jun 21-Jul 16
Eruption started at 1750 UTC on 6/21/2019. Emissions rose to 13.1 km (43,000 feet).