Erik Klemetti, associate professor of Geosciences at Denison University in Granville, 俄亥俄, said the sulfur dioxide spewed into the atmosphere by the Hunga Tonga eruption was “well below the usual threshold for anything that’s going to have any significant impact on climate in general.”
Klemetti’s assessment was echoed by other scientists
“If the volcano decides that it’s going to do a number of explosions, and keeps on adding, that’ll change things,” Klemetti told CNN. “但是现在, it seems like it was a short enough event that didn’t have enough sulfur in it to likely cause much of a climate impact.”
Klemetti noted the Tonga eruption might have a regional impact on temperature, though scientists are still unsure of how significant it could be. Klemetti noted it ultimately depends on how much of the SO2 made it into the stratosphere.
Klemetti also emphasized it is not the ash which affects global temperature and weather. He said most people assume volcanic ash is what’s reflecting sunlight and affecting global temperature, but unlike aerosols, ash doesn’t linger in the atmosphere for very long. 代替, there needs to be a significant amount of sulfur dioxide.
An ash particle is an “actual physical shard of glass,” 他说. “They’re tiny, but they have enough mass that they’ll fall out of the atmosphere fairly quickly.”