www.sciencexpress.org / 7 August 2008 / Page 2 / 10.1126/science.116078
Atmospheric Warming and the Amplification of Precipitation Extremes
Richard P. Allan¹* and Brian J. Soden²
¹Environmental Systems Science Centre, University of Reading, Berkshire, RG6 6AL, U.K.
²Rosenstiel School of Marine and Atmospheric Sciences, University of Miami, FL 33149, USA.
moisture content. These observations reveal a distinct link between rainfall extremes and temperature, with heavy rain events increasing during warm periods and decreasing during cold periods. Furthermore, the
observed amplification of rainfall extremes is found to be larger than predicted by models, implying that
projections of future changes in rainfall extremes due to anthropogenic global warming may be underestimated.
*Correspondence e-mail: email@example.com