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Absorbing Aerosol Index KNMI
July 2002 to April 2012 validated
*): some restrictions on data use, see product details (click on institute)
Absorbing Aerosol Index by KNMI (last update: 19 June 2018)
available data Daily and monthly data from July 2002 to April 2012 are available. Data can be accessed via the TEMIS website.
point of contact
algorithm description The latest algorithm version is described in the Algorithm Document.
product details All product details can be found in the Product Specification Document.
validation results Validation comparisons have been performed using AAI data from the TOMS, GOME-1 and GOME-2 satellite instruments. The latest data version 5.1 was found to agree within 0.5 index points. A trend due to instrument degradation that was previously present has been removed to within the 0.1 index point level using a new in-flight degradation correction method. The SCIAMACHY AAI product and its validation are both described extensively in Tilstra et al., 2012 [PDF]. Further validation results can be found in the literature listed below.


SCIAMACHY Absorbing Aerosol Index (KNMI) validation literature:
  • First verification of SCIAMACHY's Absorbing Aerosol Index product
    de Graaf, M. and P. Stammes
    Abstract/Article: ESA Special Publication-531, August 2003
    Product: Absorbing Aerosol Index
    Institute: KNMI
    Method: Verified by comparing level 2 operational AAI product with KNMI's AAI algorithm
  • SCIAMACHY Absorbing Aerosol Index: The scientific product compared to the operational product and TOMS data
    de Graaf, M., L.G. Tilstra and P. Stammes
    Abstract/Article: ESA Special Publication-562, August 2004
    Product: Absorbing Aerosol Index
    Institute: KNMI
    Method: Intercomparison between SCIAMACHY level 2 AAI product and TOMS AAI on the basis of a dust outbreak on 5 April 2004 over the Sahara
  • SCIAMACHY Absorbing Aerosol Index and the consequences of instrument degradation
    Tilstra, L.G., M. de Graaf, S. NoŽl, I. Aben and P. Stammes
    Abstract/Article: ESA Special Publication-642, February 2007
    Product: Absorbing Aerosol Index
    Institute: KNMI,SRON,IFE
    Method: Global mean analysis
  • SCIAMACHY Absorbing Aerosol Index - Calibration issues and global results from 2002-2004
    de Graaf, M. and P. Stammes
    Abstract/Article: Atmospheric Chemistry and Physics 5, 2385-2394, 2005
    Product: Absorbing Aerosol Index
    Institute: KNMI
    Method: Intercomparison: AAI is compared to TOMS AAI data
  • Analysis of 5 years of SCIAMACHY Absorbing Aerosol Index data
    Tilstra, L.G., M. de Graaf, I. Aben and P. Stammes
    Abstract/Article: ESA Special Publication SP-636, July 2007
    Product: Absorbing Aerosol Index
    Institute: KNMI,SRON
    Method: Time series of regional means / satellite intercomparison
  • Satellite observations of the seasonal cycles of absorbing aerosols in Africa related to the monsoon rainfall, 1995-2008
    de Graaf, M., L.G. Tilstra, I. Aben and P. Stammes
    Abstract/Article: Atmospheric Environment 44, 10, 1274-1283, 2010
    Product: Absorbing Aerosol Index
    Institute: KNMI, SRON
    Method: Comparison with precipitation data
  • In-flight degradation correction of SCIAMACHY UV reflectances and Absorbing Aerosol Index
    Tilstra, L.G., M. de Graaf, I. Aben and P. Stammes
    Abstract/Article: J. Geophys. Res., vol 117, D06209, doi:10.1029/2011JD016957, 2012
    Product: Absorbing Aerosol Index
    Institute: KNMI, SRON
    Method: In-flight degradation correction; study of time series; comparison with models
  • Monitoring aerosol presence over a 15-year period using the Absorbing Aerosol Index measured by GOME-1, SCIAMACHY, and GOME-2
    Tilstra, L.G., M. de Graaf, O.N.E. Tuinder, R.J. van der A and P. Stammes
    Abstract/Article: Proceedings of the ESA Living Planet Symposium 2013, ESA Special Publication SP-722, 2014
    Product: Absorbing Aerosol Index
    Institute: KNMI
    Method: Satellite intercomparison as well as comparison with AERONET AOD and tropospheric NO2 column data

Quality criteria
Quality criteria for SCIAMACHY products

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