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Glaciers have lost ice surface in all polar regions since the year 1990 and will continue to do so for at least several decades, even if the planet’s global temperature stabilizes.
This is stated in the new report presented today by the Intergovernmental Group of Experts on Climate Change (IPCC) from the United Nations, which points out that the two main ice sheets – Greenland and Antarctica – have been losing mass from at least 1990, with the highest rate of loss during 2010-2019, Y expected to continue to lose.
Average annual surface air temperatures and precipitation will continue to increase over the 21st century under all emission scenarios evaluated in both polar regions.
There is a “high confidence” that the average precipitation and the intensity of the Precipitation will increase: the Arctic is expected to be dominated by precipitation and in Antarctica precipitation will increase in coastal regions.
Global temperature will rise 2.7 degrees in 2100
If the current rate of emissions is maintained of greenhouse gases, the global temperature will increase 2.7 degrees by the end of the century with respect to the average of the pre-industrial era, warns the report of the Intergovernmental Panel on Climate Change (IPCC).
This increase, which would also lead to greater extreme climatic events such as droughts, floods and heat waves, would be far from the target of less than 2 degrees set by the Paris Agreement , which recommended limiting that rise to 1.5 degrees Celsius.
The new report from the main institution that studies climate change, delayed several months due to the COVID pandemic – 19 and first in their 30 years of history that the IPCC has had to review and approve through a virtual conference, It considers five scenarios, depending on the level of emissions that is reached.
Maintain the current situation, in which the global temperature is on average 1.1 degrees higher than in the pre-industrial period (1850 – 1900), it would not be enough: scientists foresee that this would achieve a rise of 1.5 degrees in 2040, of 2 degrees in 2060 and 2.7 in 2100.
In the most pessimistic scenario, where diox emissions If carbon and other greenhouse gases doubled by mid-century, the increase could reach catastrophic levels of around 4 degrees in 2100, alert the report.
Each degree of increase could mean 7% more rainfall in the world, which could lead to an increase in storms , floods and other natural disasters, warns the IPCC.
With information from Efe .
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