Coupled surface-atmosphere reflectance (CSAR) model : 1 : Model description and inversion on synthetic data
Absorption and scattering processes in the atmosphere affect the transfer of solar radiation along its double path between the sun, the earth's surface and the satellite sensor. These effects must be taken into account if reliable and accurate information on the surface are to be retrieved from satellite remote sensing data. One approach characterises the state of the atmosphere from independent observations and corrects the data with the help of radiation transfer models. This approach requires a detailed and accurate description of the composition of the atmosphere at the time of the satellite overpass and requires significant computer resources. An alternative method is to attempt to retrieve simultaneously surface and atmospheric parameters by inverting a coupled surface-atmosphere model against remote sensing data. This study describes such a coupled model and the results of its inversion against synthetic data. The accuracy of the retrieval is studied as a function of the amount of noise added to the data. It is shown that some surface or atmospheric parameters are easier to retrieve than others with the use of a coupled mode.
Bibliographic Reference: Article: Journal of Geophysical Research, Vol. 98 (1993) pp. 20779-20789
Record Number: 199510057 / Last updated on: 1995-01-10
Original language: en
Available languages: en