Global warming is good for you

Global warming is good for you - Global warming is good for...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Global warming is good for you By Duncan Steel Reader in space technology at the Joule Physics Laboratory, University of Salford There can be little doubt that global warming is real. When scientists argue about the subject, it is usually in the context of how large a temperature rise they have calculated for the next decade or century, not whether any heating at all will occur. The heat is on, then. At least I hope so: because the greenhouse effect is a good thing. Consider historical records, and other tracers showing how our climate has varied over the past few millennia. Stepping back just a decade, we find that injections of dust or smoke into the atmosphere, such as from the Mount Pinatubo volcanic eruption and the oil fires after the Gulf war, led to slight coolings (airborne particles reflect sunlight away). Going back to the 17th century, one notes the "Little Ice Age" when the River Thames froze over and frost fairs were held in London on its icy surface. This occurred during an era when there was a dip in sunspot numbers, and so was presumably caused by lessened solar output. Why, we don't know. But it happened. Starting around AD540, pestilence spread across Europe. This is usually termed the Plague of Justinian (emperor of the eastern Roman Empire), and it was provoked by a climatic downturn. Similarly, several coincidental crashes of disparate, well-separated
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/25/2011 for the course EG 1413 taught by Professor Prof during the Spring '11 term at National University of Singapore.

Page1 / 3

Global warming is good for you - Global warming is good for...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online