Global warming: IPCC publishes alarming new report

A historic and alarming report from the IPCC (Intergovernmental Panel on Climate Change) was submitted to the UN on Monday. He explains that climate change affects all regions of the world, and that it is urgent to reduce carbon emissions to prevent disastrous consequences.

Thomas Pesquet forest fires in Frece
Forest fires in Greece seen from the ISS © Thomas Pesquet

Unveiled on Monday August 9, the first part of the sixth assessment report of the IPCC reports on the degree of upheaval of the planet by man. In total, no less than 230 scientists worked hand in hand on this report. Their conclusions are unequivocal: human greenhouse gas emissions have not declined and the goal of keeping the earth’s temperature rise below 1.5 ° C by the end of the century is now impossible.

An extremely alarming IPCC report for the future

Thus, many negative changes already initiated, such as continuous rise in sea level Where the acidification of the deep layers of the ocean, are unfortunately irreversible. Another observation, since the last IPCC report in 2007 and despite the Paris agreement in 2015, greenhouse gas concentrations increased further in the atmosphere (see Climate: the concentration of CO₂ in the air reaches catastrophic records).

Regarding the temperature at the surface of the globe, at the current rate, an increase of 1.5 ° C will be reached between next year and 2040. The 2 ° C warming could occur around the middle of the 21st century. In other words, the objectives of the Paris Agreement are largely unachievable.

If we maintain such a pace of temperature change, the report indicates that heatwaves will soon be more numerous, summers longer and winters shorter, with a greater risk of frost in the spring. With an increase of 2 ° C, “ heat extremes will more often reach critical tolerances for agriculture and health According to the IPCC assessment.

See also: What will Earth look like in 500 years?

Thus, extreme weather events, such as vast floods, which once occurred once every 100 years, could “ happen every year by the end of this century “. Urban areas will be increasingly populated, and this is also where the heat will increase.

This first part of the report is published at a crucial moment, shortly before the COP 26, which will take place in November in Glasgow. For now, IPCC scientists can only inform and alert leaders around the world. They will also publish the next two parts of the report (containing technical solutions and their expected effects) in February 2022 and March 2022.



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