The eruption of Mount Helens in 1980 produced such great ash and sulfur clouds that Earth's surface temperatures were cooler for the following two years.

Question

Quizplus · Accepted Answer

The eruption of Mount St. Helens in 1980 did produce significant ash clouds, but it did not have a notable long-term impact on Earth's climate or surface temperatures. The cooling effect on Earth's climate is more typically associated with larger volcanic eruptions like Mount Pinatubo in 1991.

The Eruption of Mount Helens in 1980 Produced Such Great