Sunday , January 17 2021

Global warming today reflects the conditions leading to the largest disappearance of the earth, the study said



"Less than 1% of the Permian Ocean is a dead zone – quite similar to today's ocean," said Deutsch.

The series of volcanic events in Siberia, which many scientists believe to cause mass extinction, makes super volcanoes look like the head of a pin, "said Seth Burgess, a geologist and volcanologist at the Geological Survey of the United States.

"We are talking about the burst of enough lava on the surface and the invasion of the bark to cover the area of ​​the United States that if you look at the US on top, it may be a long kilometer in lava," he said.


Burgess, who has explored the volcanic events of the Siberian traps but has not worked on new scientific literature, says scientists believe the magma rising from Earth has released some greenhouse gases that cause extinction.

In addition, the magma thresholds still on the Earth's surface heated the massive deposits of coal, peat and carbonate minerals, which, among other things, emitted more carbon and methane into the atmosphere.

"You are thus stimulating the disappearance of the Permian mass by entering huge amounts of magma in a pool rich in hydrocarbon sludge," he said.

UW and Stanford's research "take the next step to understand why things have died at the end of the Permian," said Burgess. "This brings us together what we think is happening in the fossil climate and making it elegant."

The supercomputer took more than six months to simulate any changes that are supposed to cause volcanic eruptions during the Peruvian period. Computer models begin in remarkable details – simulating things like clouds, ocean currents, and the life of marine plants – in the description of Earth's temperatures and conditions.

Researchers were aware that surface temperatures had risen by about 10 degrees in the tropics due to the previous scientific analysis of petrified teeth of eels called condons.

To manage their model, researchers recall volcanic greenhouse gases in their simulation to match the temperature conditions at the end of the Peruvian period.

As the temperatures climbed to the 10-degree mark, the oceans of the model became depleted by oxygen, a trend that researchers also value in today's oceans.

To measure how rising temperatures and less oxygen would affect Permanent animal species, the researchers used 61 modern creatures – crustaceans, fish, shellfish, coral and sharks. Researchers believe that these animals will have similar temperature and oxygen sensitivity to Permian species because animals adapt to live in such a climate.

The effect of warming is double on creatures, researchers found. In warmer waters, animals need more oxygen to perform body functions. But hot water can not contain so much dissolved oxygen, which means they are less accessible to them.

In other words, as animal bodies require more oxygen, the supply of the ocean is declining.

In their model, the researchers were able to quantify the loss of habitat as species facing increasingly challenging ocean conditions. Surface temperature elevation and oxygen loss are more significant in areas beyond the equator. The rate of extinction has increased also at higher latitudes.

Tropical animals were already accustomed to warmer temperatures and lower oxygen levels before volcanic eruptions moved the climate, according to the study. As the world warms up, they can move along with their habitats.

Sea creatures, who prefer cold water and high oxygen levels, are getting worse: they have nowhere to go.

"The high latitudes, where it is cold and oxygen, are high – if you are an organism that needs such conditions to survive, these conditions completely disappear from the Earth," said Deutsch.

In modern oceans, warming and loss of oxygen have also been more pronounced near the poles, researchers say, drawing another analogue between the climate change about 252 million years ago and what is happening today.

"The survey tells us what is at the end of the road if we allow the climate (change) to go on." The more we go, the more species we are likely to lose, "said Deutsch. "It's frightening, the loss of species is irreversible."


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