Groisman et al. (2004)
Also: Groisman et al. 2004
Contemporary Changes of the Hydrological Cycle over the Contiguous United States: Trends Derived from In Situ Observations
Groisman, P.Y., Knight, R.W., Karl, T.R., Easterling, D.R., Sun, B. & Lawrimore, J.H. (2004). Contemporary Changes of the Hydrological Cycle over the Contiguous United States: Trends Derived from In Situ Observations. Journal of Hydrometeorology. 5(1),64-85. Article
https://doi.org/10.1175/1525-7541(2004)0052.0.co;2
References
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.