New Hansen Paper: "Global Warming Has Accelerated" with Leon Simons

In this Climate Chat episode, Leon Simons and I will discuss the new paper by James Hansen, et al, titled "Global Warming Has Accelerated: Are the United Nations and the Public Well-Informed?" In the paper, Hansen discusses how the recent IMO regulations on ship emissions were a significant contributor to the recent acceleration in global warming. The paper more broadly shows that aerosols are a significant factor in climate change and their impact is underestimated by the United Nations Intergovernmental Panel on Climate Change (IPCC). Link to the paper "Global Warming Has Accelerated: Are the United Nations and the Public Well-Informed?": https://www.tandfonline.com/doi/full/10.1080/00139157.2025.2434494 Webinar featuring James Hansen discussing the new paper: https://www.youtube.com/live/d6wOjk2OCZQ White paper on Fee and Dividend carbon pricing that I co-authored with James Hansen: https://csas.earth.columbia.edu/sites/default/files/content/Fee-and-Dividend-Miller-Hansen-20191110-1.pdf My TEDx talk on climate change and Fee and Dividend carbon pricing: https://youtu.be/0k2-SzlDGko Climate Chat interview with James Hansen in December 2023: "Climate Change: What to Know/What to Do with Climate Scientist James Hansen": https://youtube.com/live/8Ag3UVSrlhE Climate Chat interview with NASA climate scientist George Tselioudis: "Global Warming➔Fewer Clouds➔More Warming! with George Tselioudis": https://youtube.com/live/suFZb2ViHoA Many other Climate Chat programs on accelerated warming, AMOC collapse, SRM, etc.: https://www.youtube.com/@climatechat/streams Landmark "Global Warming in the Pipeline" paper by James Hansen, Leon Simons, and others: https://academic.oup.com/oocc/article/3/1/kgad008/7335889 While not a co-author, Leon got a special acknowledgment in the paper: "Leon Simons, Executive Director, climate researcher, and communicator at the Club of Rome Netherlands, deserves special acknowledgment. Leon informed us about restrictions on aerosol emissions imposed by the International Maritime Organization that led to our present study of global warming acceleration. He has continued to provide information that will aid more complete use of the inadvertent ship aerosol experiment to improve understanding of climate change and actions needed to stabilize climate." Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams