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All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.
"...we know that humans are raising the temperature through the emissions of greenhouse gases. We're beginning to change the climate. Among the things that we're going to see when it gets warmer is that more of what we get in the hydrologic cycle is going to be rain, and less of it's going to be snow. As it gets warmer, the snow line is going to move up. What does fall as snow is going to melt earlier, and runoff faster."