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Support for Volcano Ash Advisory Centres (VAAC)
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Tropospheric
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monitoring |
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NO2
- global - central Europe CH2O - global CO - global |
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UV
- UV index - UV dose |
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related gases |
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Ozone
- total column - global field - ozone bulletin - ozone profiles BrO - global field |
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Aerosol
- AOD - aerosol index Methane - global Clouds - cloud info |
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emissions |
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Volcanic plume
- SO2 & AAI |
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10 January 2012
This is a preliminary, experimental and scientific AAI product. Use with care.
The Absorbing Aerosol Index (AAI) indicates the presence of elevated absorbing aerosols in the Earth's atmosphere. The aerosol types that are mostly seen in the AAI are desert dust, biomass burning and volcano ash aerosols. The AAIs provided here are derived from the reflectances measured by GOME-2 at 338 and 381 nm by the Polarisation Measurement Detectors. The pictures below present the most recent AAI measurements obtained from GOME-2 on MetOP-A from O3MSAF data, updated every 15 minutes.
Please note that there is sun glint (reflection from the sun on water surfaces to the satellite) and that this shows up as increased AAI values in the eastern one-third of the swath.
| VAAC Regions: Link to VAAC: |
Global |
Europe |
Anchorage Advisories |
Buenos Aires Advisories |
Darwin Advisories |
London Advisories |
Montreal Advisories |
Tokyo Advisories |
Toulouse Advisories |
Washington Advisories |
Wellington Advisories |
Global
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| Archive Global: 2008 2009 2010 2011 2012 | Archive Global (Unfiltered): 2008 2009 2010 2011 2012 |
Europe
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| Archive Europe: 2010 2011 2012 | Archive Europe (Unfiltered): 2010 2011 2012 |
Area VAAC Anchorage
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| Archive Anchorage: 2010 2011 2012 | Archive Anchorage (Unfiltered): 2010 2011 2012 |
Area VAAC Buenos Aires
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| Archive Buenos Aires: 2010 2011 2012 | Archive Buenos Aires (Unfiltered): 2010 2011 2012 |
Area VAAC Darwin
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| Archive Darwin: 2010 2011 2012 | Archive Darwin (Unfiltered): 2010 2011 2012 |
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| Archive Sumatra / Andaman Is: 2010 2011 2012 Archive Philippines: 2010 2011 2012 Archive Java / Sulawesi: 2010 2011 2012 Archive Papua New Guinea: 2010 2011 2012 |
Archive Sumatra / Andaman Is (Unfiltered): 2010 2011 2012 Archive Philippines (Unfiltered): 2010 2011 2012 Archive Java / Sulawesi (Unfiltered): 2010 2011 2012 Archive Papua New Guinea (Unfiltered): 2010 2011 2012 |
Area VAAC London
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| Archive London: 2010 2011 2012 | Archive London (Unfiltered): 2010 2011 2012 |
Area VAAC Montreal
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| Archive Montreal: 2010 2011 2012 | Archive Montreal (Unfiltered): 2010 2011 2012 |
Area VAAC Tokyo
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| Archive Tokyo: 2010 2011 2012 | Archive Tokyo (Unfiltered): 2010 2011 2012 |
Area VAAC Toulouse
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| Archive Toulouse: 2010 2011 2012 | Archive Toulouse (Unfiltered): 2010 2011 2012 |
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| Archive Toulouse North: 2010 2011 2012 Archive Toulouse South: 2010 2011 2012 |
Archive Toulouse North (Unfiltered): 2010 2011 2012 Archive Toulouse South (Unfiltered): 2010 2011 2012 |
Area VAAC Washington
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| Archive Washington: 2010 2011 2012 | Archive Washington (Unfiltered): 2010 2011 2012 |
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| Archive Washington Oceanic: 2010 2011 2012 Archive Washington Oceanic (Unfiltered): 2010 2011 2012 |
Archive Washington Continental: 2010 2011 2012 Archive Washington Continental (Unfiltered): 2010 2011 2012 |
Area VAAC Wellington
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| Archive Wellington: 2010 2011 2012 | Archive Wellington (Unfiltered): 2010 2011 2012 |
The data of the GOME-2 Absorbing Aerosol Index are provided by KNMI in the framework of the EUMETSAT Satellite Application Facility on Ozone and Atmospheric Chemistry Monitoring (O3M SAF).
Documentation :
- Algorithm Theoretical Basis Document
- Product Specification Document
- AAI Verification Document 2007-2011,issue 1/2012, 10 January 2012 [13 Mb!]
- M. de Graaf, P. Stammes, O. Torres, and R.B.A. Koelemeijer, Absorbing Aerosol Index: Sensitivity analysis, application to GOME and comparison with TOMS, J. Geophys. Res. 110, D010201, doi:10.1029/2004JD005178, 2005.