If so, they are, at great trouble and expense, unlikely to tell us much about the past and future trajectory of the carbon budget beyond what a simple desktop model might. (realclimate.org)
Its orbit is evolving, pushed by the subtle influence of sunlight so that its exact future trajectory difficult to predict. (scientificamerican.com)
The concept of anthropogenic impacts on seawater pH acknowledges that a regional focus is necessary to predict future trajectories in the pH of coastal waters and points at opportunities to manage these trajectories locally to conserve coastal organisms vulnerable to ocean acidification. (link.springer.com)