Wednesday , May 12 2021

Why can we save the Greenland oil leaf Horizon: the magazine Research & innovation of EU



Greenland has stored more than two million tonnes of water in a huge blanket ice that extends 80% of its land. If it has disappeared, the seals to change the world by an average of seven meters, causing a lot of low-lying coastline and islands.

And if heated temperatures in the Arctic lead to the six ice cream that has a lot of & but to reverse the region to remove further, the scientists were nervous to study # 39; the greenish ice of Greenland to see how it will affect.

They freeze that without the insulating effect of 'six' ice – with its ability to reflect the summer light – Greenland can be in & the next decade with accompanying levels. In ####################################################################################################################################################################################################################### in the coming decades even in & # 39; the melting in Greenland has done.

Now, research makes use of more complex models to simulate the relationship between the Arctic and the ice sheet in Greenland is that this can not be the case.

Researchers who work at the Ice2Ice project have indicated that changes in 's six ice and on Greenland ice cream largely independently come from one another. Six ice is present in temperature changes in water layers in & nbsp; The ocean margin while while most of Greenland responds to temperature rise.

A millennium scale simulation of the Greenland ice and climate sales shows that its rising largely is independent of that of six ice. Video credits – DMI, CSC (J. Hokkanen, visualization)

Determining the findings that during the Arctic sea ice has disappeared, Greenland can remain the ivory for centuries. It writes efforts to save the gas emissions and raise global temperature upwards to below 2 ° C above industrial levels, such as in the Paris Climate Change Agreement, can sell the world to the type of To prevent the meltdown leading to catastrophic sea level.

"It means we have no concern about any secondary effects of the loss of six ice-surface … (surface) in Greenland that is done by the ordinary background," said Professor Jens Hesselbjerg Christensen, a researcher of climate physics at the Niels Bohr Institute in Copenhagen, Denmark and one of the main coordinators of the Ice2Ice project.

Yet, the loss of six ice in & # 39; The Arctic is still largely because it has a great influence on 'ecosystems in' the region. "

Clues

The Ice2Ice project reconstructed how Arctic six ice and Greenland ice-storms reacted to climate change in the past by analyzing icicles from Greenland and sedimentary from the bottom of & nbsp; the Arctic Ocean. They used this information to build a simulation of what can happen as the world goes on.

We ran an experiment there we were 15 ° C of & # 39; Global warming, which is very high, to disappear all six seas, "said Professor Hesselbjerg Christensen. * But that, however, only the answer to Greenland was by the general increase poisonous effect, which remains stable for centuries and We could not see much of an impact from the loss of 'six ice'. He said the ice began to change his position for several hundred years.

By simulating such extreme warming can be as unrealistic, some parts of the Arctic may cause any changes in temperature at a local level that is in the & quot; the next decades can be mimicked.

If you look to Svalbard (on the edge of the Arctic Ocean), we have in & # 39; The last 40 years have changed a lot of large temperatures – something in the order of 2 ° C per decade, "said Professor Hesselbjerg Christensen." If that goes for 100 years, then the warmth (local) very strong. & # 39;

While global temperatures are considered to increase 1 ° C compared to those in pre-industrial times, this is an average increase in the world. Some areas will have a greater heat – such as the Arctic – while others do not.

One of the & # 39; The problem is that we have not really understood the Arctic. "

Professor Garry Peterson, Stockholm Resilience Center, Sweden

This has a lot to consider the Arctic to be a kind of canarian in # 39; can lie tight as the world stops. The Stockholmer Resilience Center in Sweden has corrected 19 regime skeptics that it thinks they are markers of how climate change the Arctic changes.

It has been found that there are already 15 proofs of these regime remnants found in the Arctic as the warm climate causes unreplicable changes in & quot; the vegetation on land and ecosystems in the ocean.

The Arctic is the forerunner of # Climate change around the world, it's generally twice as hot as the global average warns, "said Professor Garry Peterson, an environmental scientist at the Stockholm Resilience Center. There is worry about how it loses six seasons of global water pattern # 39 ;.

Blazers

A recent paper published last year in Physics, proved that the loss of the Arctic sea is a striking pattern in the & nbsp; the world can occur, an increase in rheumatism and fire in places such as California, this year's perennial blazers see their places and countryside.

One of the & # 39; The problem is that we have not really understood the Arctic, "said Professor Peterson." It is relatively small in comparison with Arctic time compared to other parts of the Worldwide, we are likely to see more surprises than the Arctic century changes.

Most of our knowledge of the changes that are currently taking place in the Arctic, come from satellite image that shows reductions in summer six ice over the last 40 years. Unfortunately, to really understand the outcome of the human influence on the climate or natural variants in the environment has data that goes further in the past.

The IceDynamO project aims to rebuild a high resolution in Seville in # 39; the Arctic Ocean off the northeast Greenland ice sheet. The use of information in the sediment on the bottom of & # 39; The ocean oasis examines the project as a whole together with how six seasons in the ocean. Over the past thousands of years and how the ocean and atmospheric intervention may affect.

Cements of sediment of seabirds contain fossil and chemical matters about when the sea was frozen in the past. Image credit - Dr. Christof Pearce

"If we see what happened in the last 2,000 years, we can see what the natural variants are in the sea before humans have begun to influence," said Dr. Teodóra Pados, a geologist the University of Aarhus in Denmark, the leader of the project on the project. We need to understand what the natural variation of six ice in? was the last past and what has caused it. & # 39;

Although the project begins only beginning this year, the results should help scientists to send models for how the Arctic likely changes in the coming years. The lot of the region may have profound consequences not only for you but also in & nbsp; the world.

The (different in) six ice affects large-scale climate phenomena that have other places in & # 39; the world, 'said Dr. Pados. A recent study suggests that the influence on the weather in the & nbsp; the center of Europe is, for example, and it can also affect the deep-water freeze that sweeps over the world. (The system) is very complex and we do not know what the complete effects are when we lose the six. & # 39;

The research in this article was financed by the EU. If you have this article, please share some of the social media.


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