Michael E. Mann

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Michael E. Mann

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June 16, 2025
Published by Heather Kostick on June 16, 2025
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Increased frequency of planetary wave resonance events over the past half-century

Dr. Xueke Li and collaborators are the first to demonstrate a historical trend in planetary wave resonance over the past half-century. We find that the average number of resonance events per year has tripled since the advent of adequate upper atmospheric measurements in the mid-20th century, rising from about 1 event per year in 1950 to now about 3 per year.
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June 2, 2025
Published by Heather Kostick on June 2, 2025
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Sensitivity of simulations of Plio–Pleistocene climate with the CLIMBER-2 Earth System Model to details of the global carbon cycle

In a new study led by former Mann Research Group postdoctoral researcher, Judit Carrillo, path dependence was reassessed in the history of glacial/interglacial cycles over the past 3 million years. We expand on our 2024 PNAS article to demonstrate that path dependence (or hysteresis) is highly threshold-dependent based on the model’s global carbon cycle.
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May 13, 2025
Published by Heather Kostick on May 13, 2025
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Behavioral interventions motivate action to address climate change

Penn Center for Science, Sustainability and the Media postdoctoral researcher, Allie Sinclair, along with Dr. Michael Mann, Dr. Emily Falk and the Communication Neuroscience Lab share what motivates people to take action and share information about climate change. In this study, they identify barries one may face in taking climate action and test 17 different intervention strategies
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June 24, 2024
Published by Philly Web Team on June 24, 2024
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Path-dependence of the Plio–Pleistocene glacial/interglacial cycles

In a new study led by Mann Research Group postdoctoral researcher, Judit Carrillo, hysteresis was identified in a model of intermediate complexity (CLIMBER-2) over the past few million years, most notably across the Mid-Pleistocene Transition (MPT). We demonstrate that in using path-dependent forcings there is a striking divergence in the history of Pleistocene glacial/interglacial cycles.
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July 20, 2023
Published by Philly Web Team on July 20, 2023
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Compound Drought and Heatwave Events

Dr. Michael E. Mann and collaborators lead by Kumar P. Tripathy investigated the risk of compound drought and heatwave events (CDHW) under “worse-case” climate change scenarios. In this new study, they found the effects of climate change increases the intensity, duration and frequency of CDHW events, and comment on the threat extreme heat has on socioeconomic factors.
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May 4, 2023
Published by Philly Web Team on May 4, 2023
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The 2023 North Atlantic Hurricane Season Prediction

Dr. Michael E. Mann and Shannon Christiansen at the University of Pennsylvania and Penn State ESSC alumnus Dr. Michael Kozar have released their seasonal prediction for the 2023 North Atlantic hurricane season. The prediction is for another above-normal season.
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