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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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19 February 2013
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:2009 2010 2011 2012 2013 | Archive Global (Unfiltered): 2009 2010 2011 2012 2013 |
Europe
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| Archive Europe:2009 2010 2011 2012 2013 | Archive Europe (Unfiltered): 2009 2010 2011 2012 2013 |
Area VAAC Anchorage
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| Archive Anchorage_Entire_Region:2009 2010 2011 2012 2013 | Archive Anchorage_Entire_Region (Unfiltered): 2009 2010 2011 2012 2013 |
Area VAAC Buenos Aires
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| Archive Buenos_Aires_Entire_Region:2009 2010 2011 2012 2013 | Archive Buenos_Aires_Entire_Region (Unfiltered): 2009 2010 2011 2012 2013 |
Area VAAC Darwin
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| Archive Darwin_Entire_Region:2009 2010 2011 2012 2013 | Archive Darwin_Entire_Region (Unfiltered): 2009 2010 2011 2012 2013 |
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| Archive Sumatra_Andaman_Is: 2009 2010 2011 2012 2013 | Archive Sumatra_Andaman_Is(Unfiltered): 2009 2010 2011 2012 2013 |
| Archive Java_Sulawesi: 2009 2010 2011 2012 2013 | Archive Java_Sulawesi(Unfiltered): 2009 2010 2011 2012 2013 |
| Archive Philippines: 2009 2010 2011 2012 2013 | Archive Philippines(Unfiltered): 2009 2010 2011 2012 2013 |
| Archive Papua_New_Guinea: 2009 2010 2011 2012 2013 | Archive Papua_New_Guinea(Unfiltered): 2009 2010 2011 2012 2013 |
Area VAAC London
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| Archive London_Entire_Region:2009 2010 2011 2012 2013 | Archive London_Entire_Region (Unfiltered): 2009 2010 2011 2012 2013 |
Area VAAC Montreal
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| Archive Montreal_Entire_Region:2009 2010 2011 2012 2013 | Archive Montreal_Entire_Region (Unfiltered): 2009 2010 2011 2012 2013 |
Area VAAC Tokyo
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| Archive Tokyo_Entire_Region:2009 2010 2011 2012 2013 | Archive Tokyo_Entire_Region (Unfiltered): 2009 2010 2011 2012 2013 |
Area VAAC Toulouse
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| Archive Toulouse_Entire_Region:2009 2010 2011 2012 2013 | Archive Toulouse_Entire_Region (Unfiltered): 2009 2010 2011 2012 2013 |
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| Archive Toulouse_North: 2009 2010 2011 2012 2013 | Archive Toulouse_North(Unfiltered): 2009 2010 2011 2012 2013 |
| Archive Toulouse_South: 2009 2010 2011 2012 2013 | Archive Toulouse_South(Unfiltered): 2009 2010 2011 2012 2013 |
Area VAAC Washington
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| Archive Washington_Entire_Region:2009 2010 2011 2012 2013 | Archive Washington_Entire_Region (Unfiltered): 2009 2010 2011 2012 2013 |
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| Archive Washington_Oceanic: 2009 2010 2011 2012 2013 | Archive Washington_Oceanic(Unfiltered): 2009 2010 2011 2012 2013 |
| Archive Washington_Continental: 2009 2010 2011 2012 2013 | Archive Washington_Continental(Unfiltered): 2009 2010 2011 2012 2013 |
Area VAAC Wellington
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| Archive Wellington_Entire_Region:2009 2010 2011 2012 2013 | Archive Wellington_Entire_Region (Unfiltered): 2009 2010 2011 2012 2013 |
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.