Simultaneous retrieval of aerosol optical properties and surface parameters from space: forward and inverse modeling strategies

Abstract

In order to retrieve accurate information about surface physical and biogeochemical properties from space-borne sensors removal of the atmospheric signal is required. On the other hand, the retrieval of aerosol properties from space is hampered by the necessity to remove the signal originating from the underlying surface. Instead of retrieving surface (aerosol) properties in a two-step procedure in which an "atmospheric (surface) correction" is followed by retrieval of the desired quantity, it may be advantageous to attempt a simultaneous retrieval of atmospheric and surface parameters. The forward and inverse modeling strategies associated with this approach are discussed. This approach is particularly useful over bright surfaces, and can be used for simultaneous retrieval of snow and aerosol properties.