Posted by: josephsiry | February 6, 2017

Climate Science for Everyone: How scientists measure the carbon dioxide in 800,000 year old air

The carbon isotopes do not lie; the facts in evidence by the isotope ratios reveal that the current rise in carbon dioxide is due to combustion (heavy carbon is produced by high-energy combustion) and not a “natural” process.

Progressive Culture | Scholars & Rogues

Update: To read other articles in this series, click here.

Climate scientists who study the history of the Earth’s climate (also known as paleoclimatologists) know that modern carbon dioxide levels are at their highest level in the last 800,000 years. They tell us this because they’ve been able to measure the carbon dioxide in air that is actually 800,000 years old. So how do they do that?

Scientists know how much carbon dioxide was in the air hundreds of thousands of years ago because they actually have small samples of ancient air stored in glacial ice. To get a feel for how this works, consider the following examples.

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