# Michael E. Mann Back to [[Authors/@BjornLomborg/People/People|Lomborg People]] · [[Authors/@BjornLomborg/BjornLomborg-x-profile|@BjornLomborg]] · Topic: [[Topics/Climate Change Science and Policy Debate/Climate Change Science and Policy Debate|Climate Change Science and Policy Debate]] **Role:** Climate scientist at the University of Pennsylvania; senior author of Chen et al. 2025 on strengthening nor'easters; a frequent Lomborg critic and target - Senior author of Chen, Li, Weaver, Christiansen, Horton and Mann (2025), [The intensification of the strongest nor'easters](https://www.pnas.org/doi/10.1073/pnas.2510029122) (*PNAS*): 900 nor'easters in ERA5 for 1940-2025, no median trend, ~6% higher peak winds at the 99th percentile (his blog: ~20% more destructive potential). Data and code: [GitHub](https://github.com/mann-research/KC-PNAS). - Lomborg relayed [[Authors/@BjornLomborg/People/Roger Pielke Jr|Roger Pielke Jr]]'s critique of that paper on Feb 24, 2026; see the [[Authors/@BjornLomborg/Post Analyses/Post Analysis - BjornLomborg on Nor'easters Getting Stronger (2026-02-24)|nor'easters analysis]]. - Earlier Lomborg thread about Mann: [[Authors/@BjornLomborg/Post Analyses/Post Analysis - BjornLomborg on Michael Mann and the Greatest Threat to Developing Nations (2025-10-30)|Oct 2025 Mann analysis]]. - Affiliation per Penn's own story on the paper ([Omnia](https://omnia.sas.upenn.edu/story/strongest-noreasters-getting-stronger-Michael-Mann)).