NASA study points to infrared-herring in apparent Amazon green-up

A new NASA study published today in the journal Nature shows that the appearance of canopy greening is not caused by a biophysical change in Amazon forests, but instead by a combination of shadowing within the canopy and the way that satellite sensors observe the Amazon during the dry season.

Fuente : http://www.eurekalert.org/pub_releases/2014-02/nsf…