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Absorbing Aerosol Index |
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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
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 and biomass burning aerosols. The
AAIs provided here are derived from the reflectances measured by GOME-1,
SCIAMACHY and GOME-2 at 340 and 380 nm, and from the reflectances
measured by OMI at 354 and 388 nm. The pictures below present the most
recent AAI measurements obtained by SCIAMACHY and GOME-2. Below these
there are links to all the aerosol data products that are currently
available.
Latest results from SCIAMACHY and GOME-2
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| Latest Absorbing Aerosol Index (AAI) results obtained by SCIAMACHY (left) and GOME-2 (right) |
Archives
The GOME-1 AAI is available from July 1995 to June 2003. Sunglint situations and solar eclipse events are identified and flagged, and observations with too high solar zenith angles are filtered out. Instrument degradation is fully corrected for and current data can be used without restrictions.The SCIAMACHY AAI is derived daily since July 2002. The algorithm corrects for the radiometric calibration problem of SCIAMACHY. Due to radiometric degradation of the SCIAMACHY UV channels, the AAI values used to be anomalously high for data measured since about the end of 2004. This problem has been solved and current data can be used without restrictions.
The OMI AAI is available since October 2004 and runs in near-real-time. Sunglint situations are filtered out.
The GOME-2 AAI has become fully operational since January 2010. Data are available from 2007 on.
SCIAMACHY Absorbing Aerosol Index
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AAI monthly images:
AAI monthly data files: AAI daily gridded data: AAI daily level-2 data: AAI daily images: AAI daily log files: |
2002
| 2002 | 2002 | 2002 | 2002 | 2002 | |
2003
| 2003 | 2003 | 2003 | 2003 | 2003 | |
2004
| 2004 | 2004 | 2004 | 2004 | 2004 | |
2005
| 2005 | 2005 | 2005 | 2005 | 2005 | |
2006
| 2006 | 2006 | 2006 | 2006 | 2006 | |
2007
| 2007 | 2007 | 2007 | 2007 | 2007 | |
2008
| 2008 | 2008 | 2008 | 2008 | 2008 | |
2009
| 2009 | 2009 | 2009 | 2009 | 2009 | |
2010
| 2010 | 2010 | 2010 | 2010 | 2010 | |
2011
| 2011 | 2011 | 2011 | 2011 | 2011 | |
2012
2012 2012 2012 2012 2012 |
The SCIAMACHY daily data are available in two flavours:
- Gridded global daily data for users that are familiar with the TOMS AAI data format
- Level-2 data with AAI, time, and geolocation information (ASCII data format)
Reprocessed SCIAMACHY AAI data based on level-1 data processor versions 6.0x (until 31-12-2009) and 7.0x (as of 01-01-2010), including an improved scan-angle dependent correction for instrument degradation, are now available for the entire mission.
11 October 2011: Release of software version 5.0. Most important
features:
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Citation
When the data are used in scientific publications, please refer to the following publication:
L.G. Tilstra, M. de Graaf, I. Aben, and P. Stammes, Analysis of 5 years of SCIAMACHY Absorbing Aerosol Index data, Proceedings of the 2007 Envisat Symposium, ESA Special Publication SP-636, 2007. (PDF file)
Documentation :
- M. de Graaf and P. Stammes, First verification of SCIAMACHY's Absorbing Aerosol Index product, Proceedings of the Envisat Validation Workshop, ESA Special Publication SP-531, 2003. (PDF file)
- M. de Graaf, L.G. Tilstra, and P. Stammes, SCIAMACHY Absorbing Aerosol Index: The scientific product compared to the operational product and TOMS data, Proceedings of the Second Workshop on the Atmospheric Chemistry Validation of ENVISAT (ACVE-2), ESA Special Publication SP-562, 2004. (PDF file)
- M. de Graaf and P. Stammes, SCIAMACHY Absorbing Aerosol Index - calibration issues and global results from 2002-2004, Atmos. Chem. Phys. 5, 2385-2394, doi:10.5194/acp-5-2385-2005, 2005. (PDF file)
- L.G. Tilstra, M. de Graaf, S. Noël, I. Aben, and P. Stammes, SCIAMACHY's Absorbing Aerosol Index and the consequences of instrument degradation, Proceedings of the Third Workshop on the Atmospheric Chemistry Validation of ENVISAT (ACVE-3), ESA Special Publication SP-642, 2007. (PDF file)
- L.G. Tilstra, M. de Graaf, I. Aben, and P. Stammes, Analysis of 5 years of SCIAMACHY Absorbing Aerosol Index data, Proceedings of the 2007 Envisat Symposium, ESA Special Publication SP-636, 2007. (PDF file)
- L.G. Tilstra, M. de Graaf, O.N.E. Tuinder, R.J. van der A, and P. Stammes, Studying trends in aerosol presence using the Absorbing Aerosol Index derived from GOME-1, SCIAMACHY, and GOME-2, Proceedings of the 2011 EUMETSAT Meteorological Satellite Conference, 2011. (PDF file)
GOME-2 Absorbing Aerosol Index
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AAI monthly images:
AAI monthly data files: AAI daily images: AAI daily data files: |
2007
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2008
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2009
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2010
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2011
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2012
2007 | 2008 | 2009 | 2010 | 2011 | 2012 2007 | 2008 | 2009 | 2010 | 2011 | 2012 2007 | 2008 | 2009 | 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).
20 April 2010: All GOME-2 years are covered, near-NRT processing
service is up and running.
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Citation
When the data are used in scientific publications, please refer to the following publication:
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.
Documentation :
- Data description of the gridded (level-3) data on this website
- Product Specification Document for the original level-2 data that can be obtained from the O3M SAF
- 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.
- L.G. Tilstra, O.N.E. Tuinder, and P. Stammes, GOME-2 Absorbing Aerosol Index: Statistical analysis, comparison to GOME-1 and impact of instrument degradation, Proceedings of the 2010 EUMETSAT Meteorological Satellite Conference, 2010. (PDF file)
- L.G. Tilstra, M. de Graaf, O.N.E. Tuinder, R.J. van der A, and P. Stammes, Studying trends in aerosol presence using the Absorbing Aerosol Index derived from GOME-1, SCIAMACHY, and GOME-2, Proceedings of the 2011 EUMETSAT Meteorological Satellite Conference, 2011. (PDF file)
GOME-1 Absorbing Aerosol Index
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AAI monthly images:
AAI monthly data files: AAI daily gridded data: AAI daily level-2 data: AAI daily images: AAI daily log files: |
1995
| 1995 | 1995 | 1995 | 1995 | 1995 | |
1996
| 1996 | 1996 | 1996 | 1996 | 1996 | |
1997
| 1997 | 1997 | 1997 | 1997 | 1997 | |
1998
| 1998 | 1998 | 1998 | 1998 | 1998 | |
1999
| 1999 | 1999 | 1999 | 1999 | 1999 | |
2000
| 2000 | 2000 | 2000 | 2000 | 2000 | |
2001
| 2001 | 2001 | 2001 | 2001 | 2001 | |
2002
| 2002 | 2002 | 2002 | 2002 | 2002 | |
2003
2003 2003 2003 2003 2003 |
The GOME-1 daily data are available in two flavours:
- Gridded global daily data for users that are familiar with the TOMS AAI data format
- Level-2 data with AAI, time, and geolocation information (ASCII data format)
The current GOME-1 AAI software version is G1-AAI 5.0, based on level-1 data from processor version GDP/4.00.
Citation
When the data are used in scientific publications, please refer to the following publication:
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.
Documentation :
- 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.
- L.G. Tilstra, M. de Graaf, O.N.E. Tuinder, R.J. van der A, and P. Stammes, Studying trends in aerosol presence using the Absorbing Aerosol Index derived from GOME-1, SCIAMACHY, and GOME-2, Proceedings of the 2011 EUMETSAT Meteorological Satellite Conference, 2011. (PDF file)
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AAI daily images:
AAI daily level-3 data files: AAI daily NRT level-2 data files: |
2004
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2005
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2006
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2007
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2008
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2009
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2010
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2011
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2012
2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 |
The level-2 product that is provided is the OMI OMAERO product (version 1.1.1).
Documentation :
- Data description of the gridded (level-3) data on this website
- File Format Specification of the OMAERO (level-2) data on this website
Tools