The inter-comparison of AATSR dual-view aerosol optical thickness retrievals with results from various algorithms and instruments
Abstract:The Advanced Along-Track Scanning Radiometer (AATSR) dual-view (ATSR-DV) aerosol retrieval algorithm is evaluated for a single scene over Germany (49-53˚ N, 7-12˚ E) on 13 October 2005 by comparison of the aerosol optical thickness (AOT) at 550 nm with products from Multiangle Imaging SpectroRadiometer (MISR), Moderate Resolution Imaging Spectroradiometer (MODIS) and Medium Resolution Imaging Spectrometer (MERIS), in addition to the Atmospheric Aerosol Retrieval using Dual-View Angle Reflectance Channels (AARDVARC) algorithm developed at Swansea University. The AOT was retrieved from the AATSR using the ATSR-DV algorithm, for the pixel size of 1 km × 1 km (at nadir). Then these values were meshed to be consistent with the sampling of the products from the other satellite instruments. The ATSR-DV results compare favourably with the products from orbiting optical instruments dedicated to aerosol retrieval, such as MODIS and MISR, which leads to the conclusion that AATSR is well suited for aerosol retrieval over land when the dual view is used with the ATSR-DV algorithm.
Document Type: Research Article
Affiliations: 1: University of Bremen, Institute of Environmental Physics, Bremen, Germany 2: Security and Safety, TNO Defense, The Hague, The Netherlands 3: Department of Physical Sciences, University of Helsinki, Finnish Meteorological Institute, FI-00101 Helsinki, Finland and, Helsinki, Finland 4: Swansea University, Climate & Land Surface Systems Interaction Centre (CLASSIC), Swansea, SA, UK 5: University of Maryland (UMD), Earth System Interdisciplinary Center, MD, USA
Publication date: January 1, 2009