Human activity since the industrial revolution has disturbed the million years ago sensitive balance that allowed the earth to absorb the carbon dioxide.
This fact was published by the journal Nature Geoscience and is based on bubbles of air found on Antarctic ice that dates back to 610,000 years ago.
This research comes to prove the hypothesis commonly accepted by some scientists for the last 25 years, relating the level of the carbon dioxide in the atmosphere with our planet’s temperature.
These findings came to solve all the doubts shared by the scientists that were skeptical about the influence of humans towards global warming.
Our planet seems to have very specific mechanisms to reduce the excess of carbon dioxide from our atmosphere that before human activity used to come from active volcanoes but in a much lower level than with humans.
Through the analysis of the air bubbles in the Antarctic ice scientists managed to find the level of carbon dioxide present in our atmosphere at ancient times. Scientists discovered that for about 600,000 years the level of carbon dioxide was low allowing the low temperatures experienced at the time and even the so called interglacial periods.
Over those 600,000 years the average change in the amount of carbon dioxide present in the atmosphere was of 22 parts per million which means a variation of 22 molecules of carbon dioxide for every million molecules of air.
Since 200 years ago, because of the industrial revolution, that the amount of carbon dioxide present in the atmosphere have risen to 100 parts per million. This means that human activities are delivering carbon dioxide into the atmosphere about 14,000 times as fast as natural processes do.
The level of carbon dioxide in the atmosphere is still growing and the natural mechanism that will eventually absorb this gas is going to take a huge amount of time. The time that the natural processes will take to reestablish the level of carbon dioxide in our atmosphere is hard to imagine.
All this damage to the equilibrium of our atmosphere has been made in the short period of the last 200 years but now imagine how much damage we deal to the atmosphere every day. People much realize that taking action into reducing their carbon footprint is extremely necessary! Also governments must take immediate action into reducing their countries greenhouse emissions.
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