Nations approve historic global climate accord

Testing the Historic Tracking of Climate Models

global climate change

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Modern global climate change.

Modern climate change is dominated by human influences, which are now large enough to exceed the bounds of natural variability. The main source of global climate change is human-induced changes in atmospheric composition. These perturbations primarily result from emissions associated with energy use, but on local and regional scales, urbanization and land use changes are also important. Althoug...

Designing Global Climate Regulation

ous prospect, political negotiations have sought to establish an international regulatory policy to constrain greenhouse gas emissions. Major new treaties— the 1992 Framework Convention on Climate Change and the 1997 Kyoto Protocol—have been negotiated. But identifying the problem is not the same as crafting the solution. Climate science is a necessary but not sufficient basis for climate polic...

Uncertainties in global - scale reconstructions of historic land use

Land use and land-use change play an important role in global integrated assessments. However, there are still many uncertainties in the role of current and historical land use in the global carbon cycle as well as in other dimensions of global environmental change. Although databases of historical land use are frequently used in integrated assessments and climate studies, they are subject to c...