Modelling the scattering of light by vegetation in optical remote sensing: statement of the problem for the three-dimensional homogeneous case
Research has been carried out with respect to the problem of radiation transfer in geophysical media, comparing the particular issues occurring in plant canopies to those occurring n the atmosphere. Remote sensing applications are examined, where the main constraint is to be able to invert the photon transport model against observations to retrieve the properties of the observed media. To facilitate the solution of the radiative coupling between the vegetation and atmospheric layers, the same formal approach is used in both media, and the extinction and differential scattering coefficients is specified in similar way. The accurate description of the radiation transfer within a vegetation layer is complicated by the fact that both of these coefficients depend on the position of the external sources of radiations, and by the lack of precise knowledge about the radiative boundary conditions at the top and bottom of this layer. Effective solutions to the radiation transfer problem in plant canopies requires the introduction of specific hypotheses, for instance in the treatment of the multiple scattering contribution.
Bibliographic Reference: Article: Journal of the Atmospheric Sciences
Record Number: 199610233 / Last updated on: 1996-03-18
Original language: en
Available languages: en