Climate warming is getting worse! The melting speed of Antarctic "doomsday glacier" has accelerated, and the sea level has risen by 60 cm.

Under the background of climate warming, many natural landscapes on the earth are undergoing tremendous changes, the most obvious of which should be the melting of polar ice and snow. Some time ago, foreign media reported that the complete collapse of Canada's last continental shelf would cause climate change and sea level rise in some areas. Recently, BBC once again reported the news related to Antarctic glaciers, and this time it was still bad news.

According to the BBC, a glacier named Switz in Antarctica is melting faster than scientists expected. At the same time, it is also known as the "doomsday glacier" because of its obvious melting phenomenon and huge ice storage since the 1970s. The report pointed out that the chief culprit leading to the rapid melting of the doomsday glacier was the warm current that sneaked into the bottom of the glacier. According to the detection, the temperature of the warm current reached 2 degrees Celsius.

What kind of glacier is Switz Glacier?

According to the long-term investigation of Antarctic expedition members and satellite detection, there are two glaciers in Antarctica, namely Song Dao Glacier and Switz Glacier, which move fastest and have the largest area. Swiss glaciers are located in the west of Antarctica. According to researchers' conservative estimation, its glacier thickness is 4 kilometers, with a total area of over 6.5438+0.8 million square kilometers, almost the same as that of Florida. Many climate experts say that Swiss glaciers are a key factor in determining global sea level change.

Some studies have pointed out that if the total ice storage capacity of Switz is completely melted, the sea level will rise by at least 60 cm. Since the 1970s, the area of glaciers in Switzerland has been significantly reduced. In the 1990s, about 654.38 billion tons of ice was lost every year, but now it is estimated that at least 70 billion tons of ice is lost every year. The change of glacier loss rate is enough to see the change of greenhouse effect, and people should pay attention to its present situation.

What caused the glaciers in Switzerland to melt faster than scientists expected?

In fact, last year, NASA detected a hole about 300 meters high under the Swiss glacier through satellite radar technology. According to calculation, this cave can store at least 654.38+04 billion tons of ice. Then, the British Antarctic Survey sent an unmanned submarine to investigate the bottom of Swiss glaciers. The results show that the water temperature at the bottom is higher than that in other areas, reaching about 2 degrees Celsius after the test.

At present, all the detection conditions show that there is a huge cavity under the front of Sweets glacier, which provides a passage for the invasion of warm current. The researchers found that the ocean warm current flows along the channel to the bottom of the glacier, and the more warm current is accumulated, the more serious the bottom glacier melts. According to research data, this hole under the Switz Glacier is at least 600 meters long, which is about the length of six football fields, and its scale can be imagined.

What will be the impact of the doomsday glacier collapse?

If the Switz-scale glacier melts completely, it will have a great impact on climate, natural life and environment, otherwise it will not be called "doomsday glacier". What effect may it have if it melts? The first is to cause the global sea level to rise, and the increase is visible to the naked eye. Researchers say that once the Switz glacier is completely melted into the ocean, it will cause the global sea level to rise by at least 60cm.

More importantly, Switz Glacier is also connected with other glaciers in western Antarctica. Its collapse will lead to the collapse of other glaciers, and eventually all glaciers will melt, causing the global sea level to rise by 2-3 meters. Of course, this situation will not pose a threat to inland high-altitude areas, but it is definitely a disaster to inland low-lying and coastal low-lying areas. No matter where humans live, or where no one lives, they will be submerged under water.

Secondly, the melting of glaciers in Switzerland may also lead to ocean storms. Professor david vaughn from the British Antarctic Survey said that according to previous survey data, when the global sea level rises by 0.5 meters, the huge ocean storm will change from once in a thousand years to once in a hundred years or even once in ten years. In short, the frequency of extreme weather phenomena has become higher. Swiss glaciers have sounded the alarm for mankind. Are we still waiting to die?