To retrieve regional distribution for CO/sub 2/ assimilation of grassland in Inner Mongolia of China using two time-phase NOAA-AVHHR and surface data

This paper developed an algorithm, which is for separating ground surface temperature using two time-phase NOAA-AVHRR data and the heat balance and thermal inertia principles. A model for converting vapor transpiration of grass canopy into CO/sub 2/ assimilation has also been established. The authors used the two-layer model, to retrieve CO/sub 2/ assimilation of grassland in the Inner Mongolia. Reasonable regional distributions of CO/sub 2/ assimilation have been compared by measurements at the Xilinhote ecological station. The comparison indicated this approach is feasible.