Beyond the Hockey Stick: Climate Lessons from The Common Era with Dr. Michael E. Mann

October 13, 2022
2:00pm - 3:00pm
In-person Lynch Lecture Hall
Penn Chemistry 1941 Building
231 South 34th Street
Beyond the Hockey Stick

“Beyond the Hockey Stick: Climate Lessons from The Common Era”

The Department of Earth and Environmental Science invites you to a Climate Week event featuring Dr. Michael E. Mann.

More than two decades ago, my co-authors Raymond Bradley, Malcolm Hughes and I published the now iconic “Hockey Stick” curve. It was a simple graph, derived from large-scale networks of multiple types of climate proxy (“multiproxy”) data such as tree-rings, ice cores, corals and lake sediments, that captured the unprecedented nature of the warming taking place today. And it became a focal point in the debate over human-caused climate change and what to do about it. Yet the apparent simplicity of the hockey stick curve betrays the dynamicism and complexity of the climate history of past centuries and how it can inform our understanding of human-caused climate change and its impacts. I discuss the lessons we can learn from studying paleoclimate records and climate model simulations of the “common era”, the period of the past two millennia during which the “signal” of human-caused warming has risen dramatically from the background of natural variability. - Dr. Michael E. Mann


Dr. Michael E. Mann

Dr. Michael E. Mann

Presidential Distinguished Professor University of Pennsylvania

Dr. Michael E. Mann is Presidential Distinguished Professor in the Department of Earth and Environmental Science at the University of Pennsylvania, with a secondary appointment in the Annenberg School for Communication. He is director of the Penn Center for Science, Sustainability, and the Media (PCSSM),

Dr. Mann received his undergraduate degrees in Physics and Applied Math from the University of California at Berkeley, an M.S. degree in Physics from Yale University, and a Ph.D. in Geology & Geophysics from Yale University. His research interests include the study of Earth's climate system and the science, impacts and policy implications of human-caused climate change.