When comparing with alternative models of plant physiological processes, we find that the largest uncertainties are associated with plant physiological responses, and then with future emissions scenarios. (dotearth.blogs.nytimes.com)
The inventories are used to evaluate regulatory policies for air quality improvements and to anticipate future emission scenarios that may occur with economic and population growth. (sciencedaily.com)
Moreover, future emissions scenarios show that this inequality will significantly worsen by 2030. (nature.com)