Volcanic ash and sulfur dioxide spewed out of Mt. Pinatubo in 1991. These materials can reflect incoming solar radiation. Over the next few years, what do you think happened?
The global climate cooled.
The global climate warmed.
Nothing; volcanic activity doesn't impact climate.
As you can tell, every year the Earth is getting warmer. For example, the glaciers are rapidly melting (this process typically takes hundreds of years).
