!Despite climate changes, the Earth is able to regulate its temperature throughout the ages
!Despite climate changes, the Earth is able to regulate its temperature throughout the ages 11590
Over the past 3.7 billion years, life on Earth has continued amid great changes from volcanoes to ice ages and shifts in solar radiation.
A new study confirmed that the Earth is able to keep global temperatures under control, according to what was stated in a study prepared by researchers from the Massachusetts Institute of Technology .
The Earth's climate has seen some big changes, from global volcanoes to ice ages cooling the planet and dramatic shifts in solar radiation, but life has persisted on the planet for the past 3.7 billion years.
The study, the results of which were published in the journal Science Advances, highlights that the planet contains a 'stabilizing feedback' mechanism that has been operating over hundreds of thousands of years to pull the climate back from the brink, keeping global temperatures within a constant habitable range.
!Despite climate changes, the Earth is able to regulate its temperature throughout the ages 1-216
Sequestration of carbon in rocks
Global temperatures are maintained by a possible mechanism: silicate erosion, a geological process that involves the natural, slow and continuous atmospheric effects of silicate rocks, triggering chemical reactions that eventually release carbon dioxide from the atmosphere into ocean sediments, trapping the gas. in the rocks.
Scientists have long suspected that atmospheric effects or silicate erosion play a major role in regulating the Earth's carbon cycle. That mechanism could provide geologically constant force in keeping carbon dioxide, and thus global temperatures, in check. But there has been no direct evidence that there is a running run of such interactions yet.
The new findings are based on a study of paleoclimate data that records changes in average global temperatures over the past 66 million years. The team of MIT scientists applied mathematical analysis to see if the data revealed any distinct patterns of stabilization of phenomena that limit global temperatures over a geological time scale.
Scientists discovered that, in fact, there appears to be a steady pattern in which Earth's temperature fluctuations diminish over hundreds of thousands of years. The duration of this effect corresponds to the time scales over which the silicate erosion mechanism is expected to operate.
!Despite climate changes, the Earth is able to regulate its temperature throughout the ages 1-217
The earth is witnessing an increase in temperature "expressive"
end of global warming
The study is the first to use actual data to confirm the existence of a "stable feedback" phenomenon, the mechanism of which is likely to be silicate weathering. This "feedback" mechanism could explain how the planet remained habitable through dramatic weather events in the geological past.
"It's a result that suggests that global warming today will eventually be canceled out by these feedbacks to stabilize," says Konstantin Arnschedt, EAPS Earth, Atmospheric and Planetary Sciences specialist at MIT. "But on the other hand, it will take hundreds of thousands." years until it happens, which is no longer fast enough to solve the current problems."

For his part, Professor Daniel Rothman, Professor of Geophysics at the Massachusetts Institute of Technology, says, “This entire study is only possible because there has been significant progress in improving the accuracy of deep-sea temperature records.” to 66 million years, with data points thousands of years apart.
Serendipity and pure luck
"There is an idea that serendipity may have played a major role in determining why life still exists after more than 3 billion years," adds Professor Rothman.
In other words, because Earth's temperatures fluctuate over longer periods, these fluctuations may be small enough in a geological sense to be within the range within which stable feedbacks, such as silicate weathering, can keep the climate cyclical and the planet habitable.

"There are two types of opinions, one says that random chance is a good enough explanation, while others think that there must be stable reactions," Prof. Ahrenschedt explains, noting that the new results based on the data, "the answer may be in Somewhere in between. In other words, there was some stability, but it's also possible that pure luck played a role in keeping Earth consistently habitable."

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