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powerful greenhouse gasWired
•81% Informative
In 1896 , Svante Arrhenius realized that carbon dioxide (CO2) traps heat in Earth ’s atmosphere.
Every time the CO2 concentration in the atmosphere doubles, Earth 's temperature will rise between 2 and 5 degrees Celsius .
A team led by Robin Wordsworth of Harvard University figured out why CO2 molecule is so good at trapping heat in the first place.
Carbon dioxide's absorption “spectrum’s” ability to absorb light varies with its wavelength.
The shape of that spectrum is essential, says David Romps , a climate physicist at the University of California, Berkeley .
Carbon dioxide usually sits in its “ground state” where its three atoms form a line with the carbon atom in the center, equidistant from the others.
The researchers used a simple model to prove that the logarithmic scaling comes from the shape of the carbon spectrum.
In some ways, the calculation helps us understand climate change better than any computer model.
“It just seems to be a fundamentally important thing to be able to say in a field that we can show from basic principles where everything comes from. ” Joanna Haigh , an atmospheric physicist and emeritus professor, agreed.
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