So one way of detecting such an influence is through long - term changes in mean conditions, preferably guided by climate model studies as to which variables and how they should change. (link.springer.com)
A new atmosphere - ocean climate modeling study shows that the planet's temperature depends, ultimately, on the atmospheric level of carbon dioxide. (giss.nasa.gov)
The five degree world is the most extreme amount of warming for which relatively ample climate model studies are available. (hubpages.com)