“From this remarkable 30-year archive of satellite imagery, we thus see evidence of a greening trend. Monitoring the evolution of this will be an important task for the next 30 years of earth observation.” This is the conclusion of this peer reviewed study by 5 scientists who reviewed and analyzed 30 years of NASA satellite images.
Whatever climate changes are happening, and whatever the causes of those changes, our planet is getting greener.
Eastman, J.R., Sangermano, F., Machado, E.A., Rogan, J. and Anyamba, A. 2013. Global trends in seasonality of Normalized Difference Vegetation Index (NDVI), 1982-2011. Remote Sensing 5: 4799-4818.