Milne Ice Shelf, located on the northwest coast of ellesmere island in Nu Loewit, has a history of more than 4,000 years. According to the Canadian Environment and Climate Change Organization, the Milne Ice Shelf began to collapse due to the unusually high temperature in the northern hemisphere since summer!

The last Arctic ice shelf: the event that the Milne ice shelf began to collapse.

/kloc-More than 0/00 years ago, ellesmere island in northern Canada had an ice shelf of more than 8,600 square kilometers. A huge ice shelf extended northward along the coast, spanning hundreds of kilometers! But by 2000, the huge ice shelf was only about one eighth, divided into six big ice shelves and some small ice shelves!

Milne Ice Shelf is the largest ice shelf. Luke Copland, a professor of glaciology in the Department of Geography of the University of Ottawa, said that since 2003, there have been five large-scale ice shelf fractures along the coast of ellesmere island, and a large number of smaller ice shelves have been produced continuously. Undoubtedly, this is directly related to the soaring global temperature!

Before the Milne ice shelf broke

Although the global temperature has only risen by about 1. 15℃ since the industrial revolution, Luke Copeland said that the temperature rise in the vicinity of ellesmere island is 2-3 times the average speed, not to mention the record high temperature in the northern hemisphere set several times this summer! Milne ice shelf may disappear in the next few decades!

After the Milne ice shelf broke,

From July 29th to July 30th, the northern part of Milne Ice Shelf began to split, and its area was reduced from 187 km2 to 106 km2. Almost half of the area is separated from the Milne ice shelf. On August 3, the split ice shelf was divided into 55 square kilometers and 24 square kilometers, and cracks appeared in the main part of the Milne ice shelf!

Radar map of Milne ice shelf collapse

Satellite images from NASA show that two huge ice sheets on the ellesmere island have disappeared. They have existed for hundreds of years, but we are witnessing their complete disappearance with the naked eye! The broken Milne ice shelf is drifting along the coastline, and its movement is extremely complicated due to the restrictions of other ice shelves. The Canadian Ice Bureau is tracking them to determine whether it will pose a threat to nearby ships and drilling platforms!

Arctic high temperature warning, dominoes began to fall for the third time!

There has never been a year when the North and South poles exceeded this year's high temperature record. On February 9 this year, Seymour Island in Antarctica detected a high temperature of 20.75℃. Of course, this is not the South Pole, but the outer edge of the South Pole at about 66.5 degrees south latitude. This is the highest temperature record since 196 1 was established!

Seymour Island Location

Although this is only an isolated data, it has been confirmed by the World Meteorological Organization (WMO) that since the industrial revolution, the temperature change trend of the Antarctic Peninsula and its adjacent islands has been 2-3 times higher than that of the whole world, reaching a temperature rise of 3℃! It is basically consistent with the temperature rise in the Arctic!

On June 20th, a high temperature of 38℃ was measured in Yansk Town, Vilho, a small town in the Russian Arctic Circle. There was an extreme low temperature of -68℃ in the local area, with a temperature difference of 105℃! Correspondingly, it is the future of Arctic permafrost, because in the hot summer, the permafrost in the Arctic Circle has become a trend of melting year by year, and the danger of the disappearance of permafrost is estimated to be known to everyone. The release of methane aggravates global warming, and the release of virus threatens the survival of animals and even human beings, and so on. And all kinds of shocking articles have sold a lot of anxiety!

But there is a real threat that keeps happening, that is, extreme weather is becoming more and more frequent. As mentioned above, since 2000, the ice shelf in Milne, Canada has collapsed faster and faster! According to the data, since 1950, natural disasters in East Asia have shown a straight upward trend, as shown in the following figure:

/kloc-proportion of natural disasters from 0/950 to 2009

Although the above data includes disasters such as earthquakes, weather-related natural disasters still account for the majority, so the increase in this proportion shows that extreme weather in the world is increasing rapidly, which not only refers to high temperature, but also includes extreme low temperature:

Blizzard and extreme cold current

Strong convective weather, hail and tornado

Tropical storms, typhoons and hurricanes

Heavy rain and heavy precipitation, etc.

High temperature and extremely dry weather

Many friends may not quite understand why global warming will lead to snowstorms and extremely cold air currents. In fact, rising ocean temperatures will lead to more water vapor entering the atmosphere. Of course, these water vapor will become precipitation again through the water vapor circulation channel in the atmosphere, and more water vapor will form a heavier rainstorm. There will be snowstorms and cold currents in winter. There is a direct relationship between them!

198 1-20 10 There is a range record of temperature rise all over the world, with the largest increase in polar regions.

On July 30, 2020, a study led by the University of Melbourne and participated by the University of East Anglia (UEA) showed that the area affected by extreme floods caused by global warming will increase by 250,000 square kilometers to 800,000 square kilometers, an increase of more than 48%, which means that about 77 million new people will be affected by floods, with an increase of 52%! The economic risk will increase by 14.2 trillion USD, accounting for about 20% of the global GDP!

Because many of these new areas are rich plains, high-tech parks, industrial areas and commercial centers, a detailed analysis report can be found in the scientific report of springer Nature that day. The paper thinks that this is closely related to the increase of greenhouse gases in the atmosphere!

Professor Robert Nichols, director of UEA Tindal Climate Change Research Center, said that due to climate change, the once-in-a-century extreme flood events may increase tenfold. Professor Ian Young, an infrastructure engineering researcher at the University of Melbourne and the author of the report, said that the flood risks in Australia, New Zealand, China, India, Southeast Asia, Southeast Africa and North America are more serious than those in other regions! He also said that these research data will help to plan flood control facilities in these areas and ensure that people are less threatened or protected from floods!

Under the background of global warming, where should we go? Leave a message and spit it out!