The Role of Sulfur Dioxide Aerosols in Climate Change

Guest essay by Buel Henry In 2007, the Nobel Prize for Peace was awarded to Albert Gore and the IPCC for their work in promoting the theory that global warming was caused by green-house gasses, and that, based upon computer simulations, increasing amounts of these gasses in the atmosphere would cause runaway warming, with disastrous…

Figure 4 in B.A. Black et al.: This image shows annually averaged temperature anomalies in excess of 3°C for the first year after the Campanian Ignimbrite (CI) eruption compared with spatial distribution of hominin sites with radiocarbon ages close to that of the eruption.

B.A. Black et al. and the journal Geology

Claim: Did volcanic induced climate change wipe out Neanderthals 40,000 years ago?

From the Geological Society of America: Boulder, Colo., USA – The Campanian Ignimbrite (CI) eruption in Italy 40,000 years ago was one of the largest volcanic cataclysms in Europe and injected a significant amount of sulfur-dioxide (SO2) into the stratosphere. Scientists have long debated whether this eruption contributed to the final extinction of the Neanderthals.…


UI researchers link smoke from fires to tornado intensity

Can smoke from fires intensify tornadoes? Study finds smoke from Central America intensified 2011 tornadoes “Yes,” say University of Iowa researchers, who examined the effects of smoke–resulting from spring agricultural land-clearing fires in Central America–transported across the Gulf of Mexico and encountering tornado conditions already in process in the United States. The UI study, published…

Aerosol generation after drop impingement on porous media is a three-step process, consisting of bubble formation, bubble growth, and bubble bursting. Image courtesy of Youngsoo Joung

Cool high speed video: Rainfall can release aerosols, study finds

High-speed imaging captures raindrops releasing clouds of aerosols on impact, showing once again that we just don’t know all the sources for aerosols and other climate forcings. From the Massachusetts Institute of Technology: Ever notice an earthy smell in the air after a light rain? Now scientists at MIT believe they may have identified the…


Satellite captures massive smoke and haze over china

China seems to be ground zero for air pollution these days. From NASA: Smoke and haze hang over a large portion of eastern China in this image captured by the Aqua satellite on October 29, 2014.  China uses the method of “slash and burn” agriculture to rid their fields of leftover plants. Farmers often use…


‘Superglue’ for the atmosphere

From Goethe University Frankfurt A research group lead by scientists at the Goethe University Frankfurt discover details on how clouds form This news release is available in German. It has been known for several years that sulfuric acid contributes to the formation of tiny aerosol particles, which play an important role in the formation of…