The present paper applies the approach using ocean and cloud views to calibrating absolutely visible and nearinfrared channels of the AVHRR on board NOAA14. The results of the absolute calibration of the two channels demonstrate that the AVHRR channels 1 and 2 sensors have been deteriorated and show a degradation 7 percent and 11 percent

respectively

with respect to the preflight calibration. To verify the results of the absolute calibration

the ground measured spectral reflecnces in desert area in China have been appled to campare with the satellite data corrected by the calibration coefficients. Agreement within an error of measurement has been found between the ground measured reflectances and the corrected satellite data for NOAA-14. Both very high and very low reflectances have been used in the calibration approach

so that the calibration coefficients can be applied to the various sites with different reflective properties. 