Mean emissivity atlases computed using observations from different sensors are ready to be downloaded. Best-fit coefficients have also been derived from AMSU-A and AMSU-B observations to model, at a global scale, the emissivity variation with scan angle and frequency. This section will be updated frequently in order to add more emissivity products. Researchers are invited to send their request and/or their questions about the land emissivity products to F. Karbou.

Coefficients for Best-fit functions to model the AMSU-A and AMSU-B emissivity variation over 18 surface types, with the zenith angle and the frequency. The surface types have been identified using the BATS climatologie. The coefficients may be used with or without a near-nadir AMSU climatologie. These functions could also be adapted (under request) to derive AMSU-A or AMSU-B like emissivities using an SSM/I emissivity climatologie (53° of zenith angle). The coefficients have been derived from global data.More details about the land emissivity model are given in the "emissivity modelling" section.
The file format is ASCII: Channel_index (For AMSU-A 1:23 GHz, 2:31 GHz, 3:50 GHz, 4:89 GHz and for AMSU-B 1:89 GHz, 2: 150 GHz), surface type, coef1, coef2, coef3, coef4, coef5, coef6. Coefi (1:6) are the coefficients for the emissivity polynomial best-fit function.