The Pacific Decimal Oscillation and Global Climate Models
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Richard A. Keen is instructor emeritus at the University of Colorado and a meteorologist who has taught classes and researched climate change, weather, and severe storms at the University of Colorado, National Center for Atmospheric Research, National Oceanic and Atmospheric Administration, National Park Service, Juneau (Alaska) Ice Field Research Program, and the U.S. Army. He is the author or co-author of more than a dozen books, including Skywatch West: The Complete Weather Guide and The Audubon Society Pocket Guide to Clouds and Storms. His research papers on climate topics (such as el Niño, glaciers, arctic climate change, and volcanoes) have been published in major journals, including Science, Monthly Weather Review, Journal of Climate, Annals of Glaciology, Geophysical Monographs, Bulletin of the Global Volcanism Network, and International Comet Quarterly. He is currently an expert reviewer for the International Panel on Climate Change (IPCC) Fifth Climate Assessment Report.