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An animation is used to explain how volcanic ash in the upper atmosphere increases average global temperatures. A volcano is seen erupting and spewing huge amounts of dust into the upper atmosphere. This dust is shown capturing incoming short wave solar radiation and trapping outgoing long wave radiation from the Earth's surface. The impact of volcanic ash on the net average temperature of the Earth is discussed. There is no narration in this clip.
This clip is from:
First broadcast:
18 October 2007

Classroom Ideas

Use this as part of an exploration of the range of factors that can influence climate change. Students working on the different opinions on man made and natural climate change could watch this clip and develop a commentary to go along with the animation. They could then use this as part of a debate or extended writing about the variety of factors that could influence the global climate.