Research

What happens to the oceans of the earth?

If for some reason you missed the openingsummit on climate change in New York on September 23 and the emotional speech of young eco-activist Greta Tunberg, don’t worry, because we will tell you about the most important - the latest report presented by the Intergovernmental Panel on Climate Change (IPCC) under the auspices of the United Nations Nations (UN), which is dedicated to the current problems of the oceans on our planet. The report talks about the extreme rise in sea level that once occurred once every hundred years, as well as how glaciers and ice sheets of the planet will respond to global warming.

Numerous storms and hurricanes are just some of the effects of global warming.

Climate change is happening right now

IPCC report prepared by more than 100Scientists from more than 80 countries around the world consider the impact of climate change on the oceans of our planet, which cover 71% of the Earth’s surface, as well as on glaciers and ice sheets. According to Nerily Abram of Australian National University, our planet is rapidly changing from the tops of the mountains to the depths of the oceans and the polar regions.

UN summit held in New York on September 23dedicated to climate change. The summit will be remembered by most thanks to the emotional performance of 16-year-old Greta Tunberg, who refused to attend school on Fridays a year ago due to global warming. During the summit, scientists called on the heads of state to take decisive measures to combat the rapid climate change. The next summit on climate issues in Monaco and Chile should also exert pressure on the heads of state.

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Speech by Greta Tunberg at the UN summit in New York

This is the third IPCC report onclimate change over the past year. In the summer, the group published a report on the problems of excessive land use for agricultural needs, and last year a report was published on the maximum temperature increase to 1.5 ° C. Read more about previously published reports on our Telegram news channel.

Consequences of global warming

So far, the oceans absorbed 90% of the heat, but becauseclimate change by 2100 will begin to absorb 5-7 times more heat if carbon emissions in the Earth’s atmosphere are not reduced. Global temperature increases limit the mixing of water layers in the ocean and, thus, reduce the amount of oxygen and nutrients on which the life of the inhabitants of the ocean depths depends. The report also predicts an increase in the number of extremely hot days, which, according to scientists, already today adversely affect fishing.

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Climate change has already done irreparable harm to the ecosystems of our planet

Also, experts predict an increase in the levelsea, which will occur at least once a year by 2050 in some parts of the world, especially in the tropics, and not once a century, as it was in the past. The IPCC report notes that by 2050, one billion people will live in low-lying coastal areas compared to 680 million today. Thus, sea level rise and its associated consequences threaten the life and livelihoods of a large part of the world's population. Although it may seem that the extra 10 cm is not so much, Michael Meredith of the British Antarctic Agency says that even for developed countries these changes are serious and require additional coastal protection. For poorer countries, solving these problems can be much more difficult.

It is interesting: Our civilization may disappear in 2050

Scientists who participated in the work onreport noted that glaciers continue to decline rapidly around the world. In the most pessimistic scenario, by 2100 they will lose more than a third of their mass, and some will completely disappear. Such losses will create inevitable problems for billions of people on our planet. Experts also note that if emissions to the atmosphere remain at the same level, then the permafrost area can be reduced to 69% by 2100. Note that in 2018, mankind released 37.1 gigatons of carbon dioxide into the atmosphere.

How to avoid climate change?

During the summit, scientists announced that beforeWe have two options for the development of events. If we can take action to significantly reduce greenhouse gas emissions, we can limit the degree of change in these parts of the climate system in the future and the impact on people and ecosystems.

Melting glaciers is one of the most pressing problems facing humanity.

However, our inability to reduce emissionswill make the task incredibly difficult. Even if we manage to limit the temperature rise to 2 ° C, as countries promised under the Paris climate agreement, the latest IPCC report says that there is a 35% chance that the Arctic will be completely free of ice before 2100. It turns out that our desire for a beautiful life, through the consumption of an unlimited number of various products, can destroy our civilization.

Do you think world leaders will respond to the statements of scientists?