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Nature Geoscience's published research data was based on the three hottest periods of 3.5 million years ago. Scientists have used various measurements to group the effects of past climate change together to study what is happening with the planet warmed up, even when the climate is stabilizing.
They found that long-term warming of one or two degrees significantly reduced the ice sheets of Greenland and Antarctica, while sea level increased by at least six meters – a few meters higher than current climate models. Katrina Meissner, researcher at the University of New South Wales, Climate Change Research Center of Australia
. She said that under the new model, climate change was much higher than expected in our models and the sea level was much higher. Influenced huge urban areas all over the world, and all the Pacific countries are under water. "Two degrees may not seem so bad when you see them written on a sheet of paper, but the real consequences are very bad – the ecosystems are changing dramatically."
K. Meissner argued that climate models focused on the near future did not adequately badess potential. Changes even at 2 degrees Celsius. "Climate models are credible when small changes, such as the scenario, are taken into account, with a reduction in emissions in the short term (as in the decades to 2100 years.) However, when the change becomes longer or longer … it seems that they have not correctly badessed climate change [pasekmių] ", – said a scientist.
An international team of researchers from 17 different countries studied three warm periods: 5,000-9,000 years ago, the last burial period, which was 116,000 to 129,000 years, and the hot period of the Pliocene period, which was 3 to 3.3 million.
During the first two periods studied, climate change was caused by changes in the Earth's orbit. In the mid-Pliocene period, the increase in carbon dioxide concentration, which, by the way, was the same as today, was the cause of global warming
In each case, the planet is helium much slower than today. "Studies of recent warming periods show that many poorly evaluated enhancement mechanisms in climate models change the long-term prediction of these models and increase long-term warming and its effects," says Hubert Fischer, one of University of Bern. "This means that the amount of carbon dioxide sufficient to cause 2 ° C global warming can be much lower than expected and, therefore, there is no possible mistake to achieve the objectives. of the Paris Agreement ". Researchers say the results they get force each country to wait and wait faster to solve the problem.
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