Aerosols and Climate Impact

Dan discusses the contrasting effects of aerosols produced by natural events like the Pinatubo eruption versus those emitted from human activities, highlighting that while Pinatubo's sulfate release had a significant cooling effect, human emissions are much larger yet less impactful due to their proximity to the surface. He notes that the IPCC estimates aerosols have masked a small fraction of global warming, prompting a discussion on the 2020 shipping regulations implemented by the IMO and their measurable impacts.