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Inherent optical properties of the aerosols for OLCI/Sentinel-3: From micro-physical properties to optical properties using AERONET
Santer, R.; Zagolski, F.; Aznay, O. (2012). Inherent optical properties of the aerosols for OLCI/Sentinel-3: From micro-physical properties to optical properties using AERONET. Adrinord/ParBleu Technologies/Université du Littoral Côte d’Opale: Lille, St Jean-sur-Richelieu and Wimereux. 1 poster pp.
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Document type: Poster
Keyword
    Marine/Coastal
Authors  Top 
  • Santer, R., more
  • Zagolski, F.
  • Aznay, O., more
Abstract
    A well-knowledge of the aerosol optical properties (AOPs) is a strong requirement for achieving the atmospheric correction over ocean. AERONET (AErosol RObotic NETwork) provides valuable inputs. They are different approaches in the use of one AERONET data which combines at a given time multi-spectral measurements of the extinction of the solar beam and of the sky radiance fields:- A direct transformation of the sky radiance into the aerosol phase function (APF) using the WOPAER tool.- The AERONET team proposes a micro-physical description of the aerosols through the retrieval of the standard size distributions of the aerosols associated with the aerosol refractive index. This micro-physical database is available on the AERONET website.This AERONET micro-physical description is used to compute the aerosol phase function at 3 wavelenghts (440, 675 and 870 nm). We refer this approach as ´AEROPA´.The individual sets of inherent optical properties (IOPs) can be used to build an aerosol climatology. This generation of MERIS aerosol models (MAMs) has been completed for the 2Seas (Northern Sea and East English Channel) and for the region of shore of Venice (Aqua Alta Oceanographic Tower, AAOT). The performance of the atmospheric correction (AC) when using different sets of MAMs has been evaluated in this work. We also discuss about the perspectives for Sentinel-3/OLCI.
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