Title
AATSR derived aerosol properties over land
Author
de Leeuw, G.
Schoemaker, R.
Curier, L.
Bennouna, Y.
Schaap, M.
Timmermans, R.
Builtjes, P.
Koelemeijer, R.
Sogacheva, L.
Sunström, A.-M.
Kolmonen, P.
Aaltonen, V.
TNO Bouw en Ondergrond TNO Defensie en Veiligheid
Publication year
2007
Abstract
The dual view of the Advanced Along Track Scanning Radiometer (AATSR) allows for the accurate retrieval of aerosol properties over land using an algorithm in which these two views are used to eliminate the influence of the land reflectance on the top of the atmosphere radiation. The algorithm uses the AATSR IR and visible wavebands for cloud detection and the visible wavebands for aerosol retrieval. The retrieval is based on minimizing the error function between modeled and measured TOA reflectances, using all available wavelengths. The TOA reflectances are modeled for a variety of aerosol mixtures. Hence, both the aerosol optical depth at various wavelengths (and thus the Ångstrom coefficient) and the mixing ratio of the dominant aerosol types can be determined. The results are evaluated by comparison with independent data: sun photometers and, when available, aerosol composition. In this contribution, the AATSR results are evaluated, based on comparisons between AATSR and MODIS AOD, and AERONET data. Results are used for assimilation in a regional scale chemistry transport model. The goal is to use satellite data for the determination of PM2.5. Other applications at TNO are in the synergisitic use with other satellites such as MSG SEVIRI and OMI.
Subject
Environment
Algorithms
Clouds
Information retrieval
Radiometers
Cloud detection
Error function
Aerosols
To reference this document use:
http://resolver.tudelft.nl/uuid:1d2990bb-99ca-4895-ae76-65db3ff7e2ff
TNO identifier
240070
ISSN
0379-6566
Source
Envisat Symposium 2007, 23 April 2007 through 27 April 2007, Montreux, Conference code: 70666 (SP-636)
Series
European Space Agency, (Special Publication) ESA SP
Document type
conference paper