Recently, you may have noticed this blockbuster news if you "stay at home" to fight the epidemic. Moreover, many media have combined the melting of glaciers caused by climate warming with the release of ancient viruses. 最近，如果您“待在家里”抗击这种流行病，您可能已经注意到了这一惊人新闻。此外，许多媒体将气候变暖引起的冰川融化与古代病毒的释放结合在一起。
Recently, you may have noticed this blockbuster news if you "stay at home" to fight the epidemic. Moreover, many media have combined the melting of glaciers caused by climate warming with the release of ancient viruses.
According to Agence France-Presse, Brazilian scientist Carlos Schaefer and his team are conducting a 20-year study in Antarctica, the subject of which is the impact of climate change on permafrost.
The scientist said that on February 9 at a monitoring station on an island at the northern end of Antarctica, a high temperature of 20.75 degrees was once recorded. He bluntly had never seen the temperature in Antarctica so high.
Just last week when this data was measured, a base on the Antarctic Peninsula recorded a high temperature of 18.3 degrees Celsius, breaking the record of 17.5 degrees recorded on March 24, 2015.
However, Schaefer also emphasized, “We cannot use it to predict future climate change. This is just a data.” “This is just a signal that something different is happening in the region.”
This may be due to the rigor of a scientist. Without the support of more detailed big data, one cannot jump to conclusions.
For example, when she was walking home with her mother during the Chinese New Year, she pointed to a fly in the corner and said, "Look, why is there still a'green bean fly (called hometown, a huge green fly)' in winter?" "This is just a detail of daily life.
According to estimates by the University of Sydney, more than 1 billion animals have been killed by the continuous fires across the country. Macquarie University estimates that, including animals such as bats, amphibians and insects, about billions of animals died in this fire, and some endangered species may have been extinct.
Public opinion will lead to fires directly at the local government’s inattention and inaction. However,
According to a report issued by the World Meteorological Organization (WMO), 2015-2019 is the hottest five years on earth, signs and impacts of climate change (such as sea level rise, ice loss and extreme weather) have increased, and greenhouses in the atmosphere The gas concentration has also risen to record levels, and carbon dioxide emissions are nearly 20% higher than in the previous five years.
According to the estimates of the National Aeronautics and Space Administration of the United States, as of January 2, 2020, the Australian wildfires have discharged 306 million tons of carbon dioxide into the atmosphere. There is no doubt that this will exacerbate global warming. It is a vicious circle.
The smoke and ashes formed by the Australian forest fires travelled across the oceans to Chile and Argentina, and even Antarctica. This fully illustrates the global nature of climate warming.
No one can take care of the dead eggs.
Located in the center of the western Antarctic ice sheet, it is an unusually wide and fast-moving glacier. Scientists call it the "most important glacier", "the most dangerous glacier", and even the "doomsday glacier" in the world.
It has a huge area, about the size of the United Kingdom. The water that it melts every year causes sea level rise to account for 4% of the world's total. Don't underestimate this number. For a glacier, it is a huge number.
This is the first time that more than 40 scientists from the International Switz Glacier Cooperation Organization began a joint investigation of the glacier in 2018. The expedition plan lasted for 5 years, in order to understand the reasons for the rapid change of Switz Glacier, it is the largest and most complicated scientific expedition plan in Antarctic history.
Understanding what is happening here is crucial for scientists to be able to accurately predict future sea level rise.
In the documentary "Doomsday Glacier" produced by the BBC for the scientific expedition, a scientist said that if one wants to imagine how the sea level will become in ten years, whether it is to build drainage channels around the town or to predict the Florida coastline will go How much is the continent retreating—Switz Glacier is the key to answering these questions.
At present, the scientific research work has achieved initial results. Scientists believe that the journey of the doomsday glacier is the result of the complex interaction of climate, atmosphere and ocean currents.
The Schwytz Glacier is approximately 1.6 kilometers below sea level and 1.6 kilometers above sea level. The bottom of the glacier was originally tightly connected to the seabed. However, due to the warming of the climate, ocean currents bring more warm water here, constantly eroding the glacier from the bottom.
As the melting area continues to increase, more and more glaciers will also melt. This is also a vicious circle.
As the front end of the glacier becomes thinner, the weight of the huge ice layer behind makes the glacier continue to advance. This is why the Switz Glacier flows so fast, melting two kilometers every year.
In fact, Antarctica’s ice stores 90% of the world’s freshwater resources, 80% of which are located in the east of the continent. It is generally believed that although the ice layer in the eastern part of Antarctica is very thick, most of it is located on land and the speed of sliding into the sea is very slow.
However, one of the reasons for the slow sliding is the existence of sea-based ice around the continent, also called ice shelf. These ice shelves block the ice caps on the land and the glaciers flowing to the sea.
In 2002, the break of the Larsen B ice shelf caused an uproar. After that, the glacier that was blocked by it flowed to the ocean six times faster.
In July 2017, the Larsen C ice shelf on the Antarctic Peninsula in western Antarctica fractured, forming iceberg A-68 with an area of 5,800 square kilometers.
In September 2019, the end of the Emory Ice Shelf in eastern Antarctica broke, and the 1,636 square kilometers iceberg disappeared with the waves and became a huge iceberg floating on the Southern Ocean.
Ice shelves originate from the flow of land ice to the sea. The end breaking into the ocean is a normal ice shelf dissolution process, but the rate and scale of their occurrence are increasing.
According to the United Nations World Meteorological Organization (WMO), the temperature of the Antarctic Peninsula has risen by nearly 3 degrees Celsius in the past 50 years, and about 87% of the glaciers on the western coast have "retreated".
The western part of Antarctica is made up of many islands, so the role of the sea-based and land-based ice caps in this area is more obvious.
If all the ice sheets in the western part of Antarctica melt, the sea level will rise by more than 6 meters.
The equivalent is Greenland. If all of Greenland’s ice sheet melts, the sea level will rise by more than 6 meters.
Or you can think of it this way. The western part of Antarctica and Greenland will each melt in half, and the sea level will rise by 6 meters.
This will have a catastrophic impact on the global coastal lowlands. The documentary "An Inconvenient Truth" is shown in animation
The world map may be redrawn.
Former U.S. Vice President and environmentalist Al Gore used detailed data analysis to prove that global warming really exists and will bring serious consequences in "The Truth Is Hard to Ignore".
Some skeptics would say that this is just a cyclical phenomenon. Didn't there also exist warm periods in the Middle Ages?
Moreover, with modern technology, scientists can compare the carbon dioxide content in the air for 650,000 years with the ancient ice age and interglacial period (the relatively warm period between two adjacent ice ages). The two are indeed Alternately.
The ice age was also colder because of the lower carbon dioxide concentration. But in the past 650,000 years, the concentration of carbon dioxide in the atmosphere has never exceeded 300 ppm (300 parts per million).
The latest data shows that in May 2019, the monthly average concentration of atmospheric carbon dioxide exceeded 415 ppm, the highest in the past 800,000 years.
Al pointed out that there are three misunderstandings that confuse the public.
In fact no.
A large-scale survey of scientific papers conducted a sample survey of scientific papers on global warming in the past 10 years since 2006. The campaign took 10% of the samples, a total of 928 articles, none of which opposed the argument that "global warming is caused by humans".
But why is the public still confused? Al directly pointed to the manipulation of politics and scientists by the oil predators behind it. Their purpose is to "redefine global warming as a theory rather than a fact." The sinister intentions are obvious.
But Al thought it was wrong.
There are two reasons. First, if we don’t have an earth, what is the use of economy? The second is that if we do it right, we will also have a lot of money and many job opportunities.
Al took the car company's cruising range (referring to the total mileage that can be driven continuously under the maximum fuel reserve of vehicles and ships and other driving tools) as an example. The standards of Japanese automobile companies leave the United States far behind, and the former companies are far more efficient than the United States.
Some people go from direct denial to despair, but they don't know to stop and start to solve the problem.
That's what Al said, and he did the same. At the Paris Climate Conference in 2015, with his mediation, he almost used his own power to persuade India to sign the "Paris Agreement", which eventually led to the adoption of the "Agreement."
The Paris Climate Conference was also reflected in another excellent documentary "The Age of Ignorance". Through the perspective of Pete, an elderly archivist, the film tells us the sorrow and regret of this old man living in the future world where the earth has been destroyed in 2055, looking through the image materials before 2015.
In order to help the poor also get on the plane, India's rich man Jeh Wadia plans to establish a low-cost airline. Although affected by climate warming, India is suffering from floods and droughts that have not been encountered in 700 years, and the carbon emissions of planes are quite alarming.
The 82-year-old French mountain guide Fernand Pareau was qualified as a "climbing guide" in 1956. His life has witnessed great changes in the Alps-glaciers almost completely disappeared.
The "cliff" left by the retreat of the glacier, and now only ladders can be installed for tourists to go up the mountain. The old man murmured, what should we do? what should we do?
Hurricane Katrina in 2005 was the most devastating meteorological disaster in American history. This natural disaster caused Alvin DuVernay, who lives in New Orleans, to lose everything, but he is an old employee of the oil giant Shell. He analyzes fossils to increase the chance of finding oil.
Layefa Malin, 22, is a doctor in a village in Nigeria. Due to the rich oil resources of the Niger Delta where she is located, Shell has attracted the presence of the company.
The abundance of oil did not make the locals rich, on the contrary, they became poorer and backward, the environment was polluted, and there were no hospitals and schools. This phenomenon is called the "curse of resources."
A pair of brothers and sisters who became refugees because of the Iraq War, followed their mother and fled to Jordan. Their father was killed by the US army, so they hated the Americans and threatened to seek revenge against them. In order to make a living, they buy old shoes eliminated from European and American countries at low prices, repair them and then sell them.
Now, it is generally believed that the reason why the US military invaded Iraq was not because of weapons of mass destruction, but oil.
Pete watched these clips in silence, puzzling, "It's weird. Watching these video clips is like looking at people on a distant beach through a binoculars. They chased in a circle and stepped on their feet. The sandy land continues to be fascinated, even if the tsunami is about to swept."
It is mentioned in "Antarctica: A Year on Ice" that this may be the "golden age" of Antarctica. A lot of scientific research is underway, and there are already regulations to come here to unite and cooperate, build peace, and explore knowledge for all mankind. Where else in the world can do this?
However, perhaps someone will find the oil here and commercialize it; one day, the above regulations that serve all mankind will be terminated...
Who would want to see these? I believe no one. Who wants to imagine that the great explorers Shackleton, Scott, and Amundsen explored the Antarctic, which would eventually lead to such a scene?
Why don't we save ourselves while we still have a chance? From a certain perspective, the answer may be because we are not sure whether we are worth saving. "
On February 14, 1990, Voyager 1 took a photo of the Earth at a corner more than 6 billion kilometers away from the Earth.
This photo is the "Pale Blue Dot" (Pale Blue Dot) handed down from later generations. In the photo, the earth is like a shining mote floating in the boundless space.
这张照片是从后世传下来的“淡蓝点”（Pale Blue Dot）。在照片中，地球就像漂浮在无限空间中的闪亮微粒。
The famous astronomer and popular science writer Carl Sagan wrote a famous description for this photo: "If you look at that light spot again, it is our home and what we have.
"Joy and pain, religion and doctrine, hunters and robbers, heroes and cowards, creators and destroyers of civilization, kings and farmers, lovers, parents, children, inventors and explorers, noble teachers, corrupt politicians, dazzling The star of China, the supreme leader, all the saints and criminals in history, live here-it is just a tiny dust suspended in the sun."
She is everything to us, the opposite is not true.