This archive is not an
exhaustive list of all volcanic emissions detected by OMI. Particularly large or otherwise
interesting events will be posted here as time permits.
This website
under development by NOAA is providing near real-time OMI SO2 images of volcanic
events.
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 OMI 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.
For some events we are also providing KMZ files for use with Google Earth.
| Volcano |
Date |
Daily images |
Composites |
KMZ |
Ash/Aerosols |
Notes/Links |
|---|---|---|---|---|---|---|
| ↓2009 ↓ | ||||||
| Sarychev, Kuril Islands, Russia | June 12, 2009 | The eruption started on June 12st sending ash plumes in 2 directions. | ||||
| Redoubt, Alaska | March 23, 2009 | The eruption started on March 22nd, around 2238 local (0638 GMT). The composite is a composite of Calispo and OMI data. | ||||
| ↓2008 ↓ | ||||||
| Kasatochi, Aleutian Islands, Alaska | August 8, 2008 | The eruption started on August 7th. | ||||
| Okmok, Aleutian Islands, Alaska | July 12, 2008 | The eruption started on July 12th. | ||||
| Cerro Azul, Galápagos Islands | May 30, 2008 | The eruption started on May 29th. | ||||
| Chaitén, Chile | May 2, 2008 | The eruption started on May 2nd. | ||||
| Llaima, Chile | Jan 1, 2008 | Llaima erupted on the evening of Jan 1. According to the Buenos Aires VAAC, the resulting ash cloud reached an altitude of 12.5 km (41,000 ft). On Jan 4, the volcanic SO2 cloud drifted over Tristan da Cunha in the South Atlantic. | ||||
| ↓2007 ↓ | ||||||
| Jebel al-Tair, Yemen | Sep 30, 2007 | The first eruption of this Red Sea volcano since 1883. The images show the long-range transport of the SO2 cloud by the subtropical jet stream. | ||||
| Manda Hararo, Afar, Ethiopia | Aug 12, 2007 | An eruption close to Manda Hararo volcano in western Afar. | ||||
| Piton de la Fournaise, Réunion | Apr 03, 2007 | The eruption of Piton de la Fournaise. | ||||
| Sheveluch (Shiveluch), Kamchatka, Russia | Mar 29, 2007 | See SO2 and ash from Sheveluch and SO2 from 2 other volcanoes further south in spite of looking through 500 DU of ozone. | ||||
| Popocatépetl, Mexico | Mar 24, 2007 | |
|
Plumes with < 1000 tons of SO2. No emissions from Colima. | ||
| Reventador, Ecuador | Mar 21, 2007 | |
|
Tonnages range from 300 to about 1200. Note that not all color ranges are the same. | ||
| Tungurahua, Ecuador | Mar 02, 2007 | Continued and steady emissions from Tungurahua. | ||||
| ↓2006 ↓ | ||||||
| Nyamuragira, DR Congo | Nov 27, 2006 | |
|
Erupted around 1000 on November 27th. The image is a composite from Nov 28 to Dec 4. QT movie (3 Mb) | ||
| Rabaul, Papua New Guinea | Oct 7, 2006 | The eruption shook windows and rained heavy ash and small stones on the city of Rabaul. QT movie (1.9 Mb) | ||||
| Fourpeaked, Alaska | Sept 17, 2006 | First historical activity at Fourpeaked. | ||||
| Tungurahua, Ecuador | Aug 02, 2006 | Typical emissions from Tungurahua on the 2nd, pulsed emissions on the 4th, reduced emissions afterwards. | ||||
| Tungurahua, Ecuador | Jul 27, 2006 | Possible cloud interference is hiding some of the plume in these images. | ||||
| Tungurahua, Ecuador | Jul 13, 2006 | refl - Jul 15th |
No new SO2 from Galeras on the 13th. Tungurahua emitting 7-10x more SO2 than usual. | |||
| Galeras, Colombia | Jul 08, 2006 | First large burst of SO2 over the last two months. | ||||
| Tungurahua, Ecuador | Jul 03, 2006 | Looks like wind reversal on the 7th. Galeras burst on the 8th. | ||||
| Tungurahua, Ecuador | Jun 21, 2006 | Tungurahua continuing to put out SO2. | ||||
| Soufriere Hills, Montserrat, West Indies | May 20, 2006 | The dome collapsed sending a volcanic plume to 20km that suspended air traffic temporarily. QT movie (3.2 Mb) | ||||
| Tungurahua, Ecuador | May 11, 2006 | Tungurahua continuing to put out SO2. Some images near edge of swath. | ||||
| ↓2005 ↓ | ||||||
| Sierra Negra, Galápagos Islands | Oct 22, 2005 | QT movie (2 Mb) showing eruptions of Fernandina (May 2005) and Sierra Negra. | ||||
| Anatahan, Mariana Islands | Apr 5, 2005 | A QT movie (34 Mb) (note large file size) shows degassing from Anatahan prior to the April 5 eruption, and several months of SO2 emissions (and typhoons) following it. | ||||
| Manam, Papua New Guinea | Jan 27, 2005 | |||||
| ↓2004 ↓ | ||||||
| Manam, Papua New Guinea | Oct 31, 2004 | |||||
| Manam, Papua New Guinea | Oct 24, 2004 | OMI launched on board AURA July 15, 2004 |
