December 6, 2021

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Arctic soil is "crumbling" due to rising temperatures

Arctic soil is “crumbling” due to rising temperatures

Arctic melting has triggered several warnings from scientists that the vast reserves of carbon released as a result of land melting could lead the planet into a vicious cycle of runway warming. Permafrost – soil that has been frozen continuously for two or more years – traps dead plants and animal material above the tundra. These ancient clues, according to experts, indicate about 1,600 billion tons of organic carbon, more than twice what is currently found in the Earth’s atmosphere.

Reaching a quarter of the northern hemisphere, the dome is frozen by rising temperatures, which has turned the Arctic into a source of greenhouse gas emissions. Of these gases, methane is 34 times more powerful than carbon dioxide (CO2) in retaining heat in the Earth’s atmosphere for a century, while nitrous oxide is 300 times more capable of heating than CO2 in 100 years.

“It could accelerate because of the magnitude of the warming we see in the Arctic,” said Rachel Trehren, an Arctic ecologist at the Woodwell Climate Research Center, who studies the impact of melting permafrost and rainfall. Wildfire on climate change by Al Jazeera. The Arctic is already warming by 2 degrees (3.8F) above its pre-industrial average, with temperatures rising further. “We see a humanitarian crisis,” Treharne pointed out. “The ground at our feet is really crumbling. We underestimate the urgency we have to do. ”

This creates a dangerous cycle – human activities such as burning fossil fuels and cultivating the farm heat the atmosphere, thus melting the permafrost and releasing additional greenhouse gases. “We can more or less control the burning of fossil fuels through political decisions and economic regulations,” said Dmitry Jastroznov, a professor and geologist at the Institute of Earth Sciences at St. Petersburg State University. Siberian lime. “But we can’t ask Permafrost to stop releasing methane. We can’t control nature.

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