Summary: High -temperature heat waves accelerate global glacier ablation

In Europe, this summer has continued to be attacked by heat waves, and the temperature in many places has reached a record high, which further accelerates the melting of glaciers. According to the "Swiss Information" report recently, the volume of the Alps glaciers has been reduced by about 60%since 1850. Based on this, half of the 1,500 Alps glaciers in Switzerland will disappear in the next 30 years. Not only in Switzerland, but also many glaciers in many other places in the world, highlighting the serious impact of global warming in the ecological environment in recent years and the urgency of climate change actions.

It is reported that the average temperature in Switzerland has increased by about 2 degrees Celsius before industrialization. If measures are not taken to reduce the discharge of greenhouse gases, in the end of this century, all the glaciers in Switzerland are facing a threat of comprehensive ablation.

According to local media reports, the wreckage of a small aircraft was recently discovered due to the melting of Alech glaciers southwest of Walle, Switzerland. Local police have determined that the aircraft parts were a small aircraft crashed here in June 1968. The melting of glaciers made some wrecks appear. The incident once again reminded people's seriousness of glaciers this year.

The German glacier this year is also experiencing extreme melting. Alav Eisen, a glacist Olaf Eisen, a glacist at the Alfred Vegner Institute in Germany, recently told local media that "2022 will be recorded as a (glacier melting) record."

"The situation we observed from Bavaria, Germany, can also be seen in Austria, Switzerland, France, and Italy," said Olaf. " The prediction of changes, then glaciers below 3500 meters (altitude) will disappear. "

According to the Bavarian Science and Humanities College of Science and Humanities in Germany, Christopher Mel, a glacier, speculated that the melting volume of glaciers in the entire Alps this year may increase by about 50%compared with previous years, mainly due to three. First of all, the amount of snowfall in most regions of Alps last winter was small; second, this summer is very sunny and hot, and there is no cold front that can bring rainfall or snowfall to high altitude areas. This kind of cold front will usually slow the melting speed of glaciers in summer; In the end, the dust from the Sahara Desert brought redd brown to the surface of the glacier, absorbed more solar radiation, and also caused the glacier to melt faster.

Not only in Europe, the melting speed of glaciers in the polar regions is also accelerating. Previous research believes that the warming speed of the Arctic region is twice the other parts of the earth, but the latest research in the Finnish Institute of Meteorological Research in the British "Earth and Environmental Communications" shows that in the past 40 years, the Arctic region has been in the Arctic region over the past 40 years, the Arctic region The warming speed is almost four times the world average.

Researchers at the institute have found that the temperature rising in the area where the Arctic Sea Bing retreats is the most obvious. Over the past few decades, most parts of the Arctic have been covered by sea ice, but the open sea water that has been opened after sea ice has radiated heat into the air, which exacerbates the process of warming. Researchers said: "This is a vicious cycle: climate change has reduced sea ice, leading to sea ice melting, which leads to climate warming. This is the main reason why the average warming speed of the polar region is faster than other parts of the earth."

In Antarctica, the Southern Ice Cover is known as the "Sleeping Giant" and is the largest continental glacier in the world, including most of the world's ice. A paper published in the British "Nature" magazine recently states that if the "Paris Agreement" goal fails to achieve, the Southern and Toto ice cover will be accelerated due to climate change. Essence Professor John Moore, a glacier at the North Pole Center of the University of Lapland, Finland, believes that the sea level rises in the future is already inevitable. The only uncertainty is how fast it will happen.

According to a research published in the British "Nature" magazine in 2021, glaciers have melted faster in recent years. The total number of glaciers around the world is about 220,000. From 2015 to 2019, the total amount of ice and snow in these glaciers was more than 298 billion tons, which was 71 billion tons more than the total amount of ice and snow annual melted from 2000 to 2004.

According to the World Meteorological Organization data, this year's scale and degree of heat waves will become more and more frequent in the next few decades. Regardless of whether people's current efforts to deal with climate change are successful, the negative impact of climate change such as high temperature will continue at least until this is the same as this. Century 60s.

The latest global climate change update report released by the World Meteorological Organization predicts that between 2022 and 2026, the global average annual temperature temporarily increases by 1.5%of the level of 1.5 degrees Celsius before industrialization, and this probability is over time over time Increased push. In addition, at least one year between 2022 and 2026 will become the hottest probability of 93%of the hottest years of records. The hottest year is 2016.

The Special Committee of the United Nations Intergovernmental Climate Change of Government stated in the "2022 Climate Change: Slow Climate Change" report released by April this year that it is still possible to reduce the global greenhouse gas emissions by 2030 by 2030. However, the world is currently in a crossroads that are "unsatisfactory and no longer come from time to time". Unless we take action now, it is impossible to achieve the goal proposed by the Paris Agreement.

Source: Xinhuanet

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