Remained 12 years. Catastrophic melting of the poles

Осталось 12 лет. Катастрофическое таяние полюсов

The ice on the poles of the Earth are melting record

In recent days, scientists have said about the critical consequences of global warming for the entire ecosystem.

Due to global warming the area of almost all glaciers in the world is shrinking and some have already disappeared completely. NASA said yesterday about the almost complete disappearance of the perennial Arctic ice cover.

Scientists released a report which States that mankind was 12 years old, to stop irreparable damage in connection with the warming. Meanwhile, one of the most important glaciers of Antarctica “sing” about his condition. Корреспондент.net tells details.

 

Terrifying song of Antarctica

16 Oct scientists study the behavior of the Ross ice shelf in Antarctica, published an article in Geophysical Research Letters, which told of an interesting phenomenon.

Winds blowing constantly in this region of the continent, make the snow and ice to vibrate and generate almost constant “sounds” that Geophysics can use to remotely monitor the status of the glacier.

The Ross ice shelf is the largest ice shelf of Antarctica, it is located on the Territory of Ross and issued in the same Ross sea.

Fueled by the glacier ice coming from the Transantarctic mountains, backing surrounding the mainland ice and not letting them slide into the ocean. If these coastal glaciers are destroyed, the rate of melting of the entire Antarctic ice rise sharply. Therefore, to monitor the status of the shelf is extremely important.

The world on fire. Causes and consequences of abnormal heat

On the background of global warming, scientists are constantly monitoring different Antarctic glaciers, tracking their movement, thickness and behavior.

In the study of the properties of the Ross ice shelf American scientists have found 34 ultra-sensitive seismic sensor under the surface of the snow, to track the vibration of the glacier to study its structure and movements.

The Ross ice shelf until now had been considered relatively stable compared with other glaciers of West Antarctica, which is particularly susceptible to melting ice.

But lately the balance between the amount of accumulated and melted ice gradually began to move away from the stable level that creates a threat of a collapse of the glacier, as is already happening with other glaciers, such as glacier Larsen B.

By studying the data from the sensors, scientists have discovered a strange effect – the surface of the snow constantly creates vibration. They found that close to the massive dunes of snow cover creates something like a roar, or bumps into a huge drum.

Speeding up the recorded vibrations, the scientists synthesized a sound that may remind you of the voice acting for a horror movie.

Scientists noticed that the vibrations change with the environmental conditions – when, during a severe storm of snow dunes are rebuilt, or if the surface temperature is changing.

For example, reduction of vibration frequency suggests that under the surface is melting ice.

 

The disastrous state of the Arctic

October 11th at the jet propulsion laboratory of NASA said about the almost complete disappearance of the perennial Arctic ice cover.

It turned out that more than 70 percent of Arctic sea ice is now seasonal phenomenon. This means that the ice melts in summer and grows in winter. While a seasonal ice is much more susceptible to atmospheric conditions.

With regard to the total area of the “old” ice ice, it shrank to two million square kilometers.

The increase in the ambient temperature causes a global catastrophe, and leads to the destruction of the Arctic ecosystem. This applies not only to many animal species, but also unique microorganisms, said NASA.

 

The melting of the poles is accelerating

One third of the total coastline in the world located in the permafrost zone. Recent studies have shown that the rate of melting of the Antarctic sheets of ice has accelerated threefold in the last five years.

Scientists say that if the next decade is not taken, the melted ice can add more than 25 inches to the overall increase in sea level in the world by 2070. Thus, in General, the sea level could rise by 3.5 meters.

According to data published by the American Academy of Sciences, the rate of annual increase of level of World ocean is growing steadily.

From the pyramids to the bloody waterfall. Secrets Of Antarctica

If this trend continues, previous predictions about the rise of water in the oceans is 30 centimeters by the year 2100 – can be safely multiplied at least by two.

As noted by the head of research group Professor Steve Nerem from the University of Colorado, this increase can double the overall rise in sea level by 2100, compared with predictions that the growth will be permanent.

The ice shield of Antarctica is a giant size. The white continent covered with a layer of ice thickness up to four kilometers. Antarctica is called the planet’s freezer – it keeps 90 percent of all fresh water on Earth.

The latest data project IMBIE (The ice sheet mass balance inter-comparison exercise), published last week in the journal Nature, showed that since 1992 Antarctica has lost nearly three trillion tons of ice.

Aggregate data of 24 parameters indicate that the rate of reduction of ice mass in Antarctica has tripled since 2012. If 2012 is annually melted 76 billion tons of ice of Antarctica, in recent years, this figure increased to 219 billion.

Norwegian scientists studying climate change in the Arctic, their concern over the fact that the Arctic is rapidly freed of ice even in winter. Changes occurring in the Arctic ocean in the Arctic are so profound that we can speak about the beginning of a new geological era, say scientists.

Lars Smedsrud, Professor, University of Bergen, notes that until recently the Arctic ocean quickly froze in the winter. But now everything has changed. The Barents sea has become lose most of ice during the winter, and, apparently, expects a similar large part of the ocean.

How has planet Earth and what to expect

The American organization the national center for the study of snow and ice notes that sea ice in the Arctic reached a maximum on 17 March. Then the ice was 14,48 million square kilometers. In the 40 years that underway measurements from satellites, this is the second worst performance.

Over the past four years the ice cover of the ocean is steadily declining. Last winter the temperature throughout the Arctic ocean was four degrees higher than usual. And the temperature is seven.

The scientist believes that in 2020-e years, many seas of the Arctic ocean will be completely ice free in the summer. Climate change means a serious jolt to the ecosystem and challenges for the peoples living in the ice.

In the case of continued warming, large amounts of methane now frozen in the Siberian ice, will be on the surface. This will lead to further warming of the globe.

The Ark Of Apocalypse. Storage from grain to ice

In addition, after the abnormally warm summer of 2016 in Yakutia, there was an outbreak of anthrax in connection with the melting of permafrost, which was the causative agent.

Scientists say that by the end of this century the Arctic ocean could be ice-free. Now in the summer in the ocean, with only 4.5 million square kilometers of ice, and in 1980-e years the ice covered area of almost eight million.

Remained 12 years

The problem of global climate change can no longer be delayed, scientists warn. We must act now – otherwise irreparable damage to the planet’s ecosystems can be made in the 2030-th year, i.e. after 12 years.

This is the main conclusion of special report of the intergovernmental panel on climate change.

Several hundred experts from around the world prepared a report for three years. They studied published work on the subject.

The scientific consensus leaves no doubt: global climate change is a reality and it is caused primarily by human actions and greenhouse gas emissions.

However, humanity still has a chance to keep temperature increase at an acceptable level. But it is not enough to reduce greenhouse gas emissions. It needs to be reduced to zero no later than the middle of the 21st century.

This means a complete rejection of the burning of coal, oil and gas. That is, the transfer of the entire global economy on a fundamentally new footing. In addition, the planet will need to radically revise the principles of land use, agriculture, urban development and industry in General.

Before, it was considered that we’re able to cope with the consequences of an increase in average temperatures to 2 degrees compared to pre-industrial levels. However, according to the report, even an increase of 1.5 degrees can be critical.

And at the current rate of emissions is inevitably going to happen very soon, sometime between 2030 and 2052 year, the report said.

To keep within the planned frameworks and the complete rebuilding of the energy system, you need a lot of money – about 2.5 percent of the total world GDP. Or – in absolute terms – 2.4 trillion dollars annually for 20 years.

 

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