Joseph Fournier: “Solar-Driven Glacial Atmospheric Dipole” | Tom Nelson Pod #404

Joseph Fournier discusses his Substack article proposing a “solar-driven glacial atmospheric dipole” to explain the Last Glacial Maximum contrast between ice-covered North Atlantic regions and ice-free Beringia. He reviews Milankovitch cycles, zonal vs meridional winds, ITCZ migration, Holocene aridity/desert formation around 4,200 years ago, and Neoglacial solar sensitivity. He focuses on how solar variability (UV, interplanetary magnetic field, energetic particle precipitation, cosmic rays) affects stratospheric polar vortices and couples to tropospheric indices (NAO, SAM), influencing clouds, sunshine, ocean circulation (AMO/AMOC), and glaciers, citing proxy reconstructions and Bond events. They also address the Atlantic “cold blob” freshwater argument and farming implications.00:00 Beringia Glacial Mystery02:35 Dedication and Wind Focus06:08 Holocene ITCZ Shifts10:21 Deserts and Neoglacial Questions15:02 Milankovitch Limits17:22 Zonal vs Meridional Flow22:09 Southern Annular Mode Basics25:12 SAM Impacts and Ocean Carbon28:48 Cloud Belts and Brightening34:32 SAM History and Solar Minima38:12 Polar Vortex Coupling40:17 Solar Magnetism Explained45:18 GCRs and Stratosphere Temps52:01 Sunspots vs Hurricane Power56:01 EPP Ozone and Aurora Link58:36 Solar System Harmonics01:01:02 Solar Wobble Link01:02:34 Jupiter Quakes Core01:06:41 Zonal vs Meridional01:11:32 NAO SPV Coupling01:14:21 Bond Events Framework01:17:42 Ice Rafted Debris01:25:26 Greenland Melt Drivers01:30:38 AMO Gulf Stream THC01:37:10 Cosmogenic Isotope Cycles01:42:34 Glacial Dipole Conclusion01:45:46 Atlantic Cold Blob01:49:13 Farming Outlook Wraphttps://x.com/JosephF55175005=========Slides, summaries, references, and transcripts of my podcasts: https://tomn.substack.com/p/podcast-summariesMy Linktree: https://linktr.ee/tomanelson1