Terrestrial Photosynthetic Light-use Efficiency of Temperate Ecosystems Can Be Inferred from Space

Abstract

Terrestrial ecosystems absorb about 2.8 Gt C yr, which is estimated to be about a quarter of the carbon emitted from fossil fuel combustion. However, the uncertainties of this sink are large, in the order of  40%, with spatial and temporal variations largely unknown. One of the largest factors contributing to the uncertainty is photosynthesis, the… (More)