United nations today Released by the United Nations Intergovernmental Panel on Climate Change Shocking new report Regarding the state of the climate: 14,000 scientific documents synthesized by hundreds of experts. This is what scientists understand about how humans ignite the earth: how hot it has become and how hot it will become, how much polar ice is melting, how droughts and storms are worsening, how terrible the road is to look forward—unless we Immediately take drastic measures to stop the emission of carbon into the atmosphere.

Ko Barrett, Vice Chairman and Senior Advisor of the IPCC, said: “We have known for decades that the world is warming, but this report tells us that the recent climate change is widespread, rapid and intensifying, which is unprecedented in thousands of years. .” The National Oceanic and Atmospheric Administration Climate, at a press conference announcing the report on Sunday. “Most importantly, unless greenhouse gas emissions are reduced immediately, quickly and on a large scale, limiting the temperature rise to 1.5 degrees Celsius or 2.7 degrees Fahrenheit will not be achieved.”

This limit is an optimistic goal Paris Climate Agreement: Maintain the global average temperature at 1.5 degrees Celsius higher than the pre-industrial level, and avoid warming by 2 degrees. The new report states that the temperature has risen by 1.1 degrees, and if the situation does not change, the temperature is expected to reach 1.5 degrees sometime in the early to mid-2030s.

This is an important update Previous IPCC reports Zeke Hausfather, a climate scientist and director of climate and energy at Breakthrough Institute who was not involved in the report, said that this predicts that the earth will reach the 1.5 milestone around 2040. “Similarly, we exceeded 2 degrees sometime between the early 2040s and the early 2050s. This is the most likely estimate in a high-emission scenario,” he said, referring to the five models modeled in the new report. One of the results.

Why is that half of the degree so important? “There is a big difference between 1.5 and 2” in terms of deterioration drought, Heat wave, storm, flood, Melting ice, and Sea-level rise, Janos Padzto, executive director of the Carnegie Climate Governance Initiative and former United Nations Assistant Secretary-General for Climate Change, said he was not involved in the report. “Two get worse. And more than two get one very many worse. Of course, we may also move in this direction. “

The report predicts what will happen in five different greenhouse gas emission scenarios: these scenarios envisage the future generation of different levels of carbon, from very low to very high. (In the lowest case, emissions will drop to net zero around 2050 and continue to decline. In the highest case, they will double by that year.) In other words, it is based on the development speed of our civilization Predict how the climate will look like decarbonization.

The color-coded graphics attached to the report also show how global temperature and precipitation rates will change based on the degree of climate warming, and list how many regions of the world have experienced increases in extreme high temperatures, precipitation, and drought. (Hint: almost all of them.)

Illustration: IPCC



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