Linear Relationship Between Total Cumulative Emissions And Global Warming Established

A direct relationship between carbon dioxide (CO2) emissions and global warming has been established in a new study by a team of scientists.

The study was done by Damon Matthews, a professor in Concordia University's Department of Geography, Planning and the Environment, along with colleagues from Victoria and the UK.

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The team used a combination of global climate models and historical climate data to show that there is a simple linear relationship between total cumulative emissions and global temperature change.

Until now, it has been difficult to estimate how much climate will warm in response to a given carbon dioxide emissions scenario because of the complex interactions between human emissions, carbon sinks, atmospheric concentrations and temperature change.

Matthews and colleagues show that despite these uncertainties, each emission of carbon dioxide results in the same global temperature increase, regardless of when or over what period of time the emission occurs.

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These findings mean that we can now say that if you emit that tonne of carbon dioxide, it will lead to 0.0000000000015 degrees of global temperature change.

If we want to restrict global warming to no more than 2 degrees, we must restrict total carbon emissions, from now until forever, to little more than half a trillion tonnes of carbon, or about as much again as we have emitted since the beginning of the industrial revolution.

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"Most people understand that carbon dioxide emissions lead to global warming, but it is much harder to grasp the complexities of what goes on in between these two end points," said Matthews.

"Our findings allow people to make a robust estimate of their contribution to global warming based simply on total carbon dioxide emissions," he added.

Source-ANI
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