The more reactive surface of the earth cools the earth

The Weathering is constant during the observation period. Instead of increasing the surface reactivity of the earth, this has reduced CO2 in the atmosphere and hence cooled the earth. Researchers published the results in Nature magazine.

Extract from CO2:

The process of weathering rocks and especially the washing of chemical rocks with carbonic acid has controlled the Earth’s climate for billions of years. Carbonic acid is extracted from CO2 when it dissolves in rainwater.

In this way, the earth’s atmosphere is deprived of CO2 by weathering, as far as volcanic gas supplies the atmosphere with it. The broad paradigm states that the formation of large mountains in the last 15 million years has increased erosion and is associated with them to burn CO2 associated with CO2. In fact, geochemical measurements in marine sediments show that the proportion of CO2 in the atmosphere has dropped sharply in this phase.

However this hypothesis has a great opportunity explained Friedel von Blankenburg of GFZ. If the atmosphere really disappears as CO2, because the weather will cause erosion, then CO2 will become CO2 in less than a million years. All water will freeze and life will be a difficult time to survive, but that is not the case.

That this doubt was grounded, they have been shown by von Blankenburg and his colleague Jane Uilenbring in a 2010 study that appeared in Nature. We have produced measurements of rare isotopes of beryllium-10 by cosmic radiation in the Earth’s atmosphere and its relationship with stable beryllium-9 isotopes in marine sediments shows that weathering does not increase from the surface of the earth Friedhelm said. from Blanckenburg.

Global carbon cycle:

In studies published, Ibarra Rugenstein Cave and Blanckenburg continue to use data for stable isotopes of lithium elements in marine sediments as an indicator of the weathering process. They want to understand how the amount of CO2 in the atmosphere can be reduced despite constant rock leakage. They introduced their data into computer models of the global carbon cycle.

In fact, the results of the model have shown that the potential of the earth’s surface has increased over time, but not at the speed that survives. The researchers call this potential “reactivity” on the surface of the earth. “Reactivity illustrates how easily compounds or chemical elements are involved in the reaction,” explained Friedel von Blankenburg. If the surface has non-weathered rock and is therefore more reactive, it can usually react chemically with a little CO2 in the atmosphere just as many weathered rocks will produce a lot of CO2. In this way, the reduction in atmospheric CO2 responsible for cooling can be explained without increasing wind speed.

Leave a Reply

Your email address will not be published. Required fields are marked *