The latest figures and weather consequences of global warming

[izentrop]

This is the hottest year ever measured in metropolitan France. With an annual average of 14 ° C, the Hexagon has experienced the highest temperatures since the beginning of meteorological measurements in 1900, said Friday 21 December Weather France. https://www.lemonde.fr/climat/article/2 ... 52612.html

[Christophe]

Funny comparison ... while being scary:

According to one study, global warming is equivalent to one atomic bomb per second

This is no longer a surprise to anyone: global warming has a significant effect on the oceans. According to a recent study by Oxford University, they absorb 90% of the energy of climate change. According to their calculations, this is the equivalent of a nuclear bomb per second.

For several decades, numerous scientific studies attest to this and many researchers are raising the alarm: the oceans are heating up considerably. A phenomenon directly observable, and which has serious consequences for the marine fauna and flora. It has now been reinforced by a new study, published by researchers at Oxford University.

1.000 times the annual global energy consumption

According to scientists, 90% of the energy created by greenhouse gas emissions would have been absorbed by the oceans during the last 150 years. This is 1.000 times more than the annual energy consumption of the entire world population ... And the equivalent of one and a half times the atomic bomb per second, with a shell the size of the one that has Shaved Hiroshima, in August 1945.

"I try not to make this kind of comparison, just because it is worrying" concedes Prof. Laura Zanna, lead author of the study. "We usually try to compare warming to the consumption of human energy, so that it is less frightening."

A rise in sea level

Consequence of this overflow of energy: the water level continues to rise: "This has led to an increase in the temperature of the ocean and the associated rise in sea level, while moderating the warming to the surface ", confirm the scientists. According to them, this trend has a direct influence on the increased frequency and severity of tornadoes and cyclones in recent years.

"Future changes could have serious consequences for sea level rise and the risk of coastal flooding," the scientists conclude.

The 8 January 2019 to 13: 03 • Jeanne Travers

[Exnihiloest]

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[ENERC]

The Antarctic ice floe at its worst:

[izentrop]

While there

https://www.novethic.fr/actualite/envir ... 46172.html

The problem is the wet heat.

[izentrop]

In Greenland, ice melts four times faster than what scientists expected https://www.nationalgeographic.fr/envir ... entifiques

According to lead author Michael Bevis, a geoscientist at Ohio State University, Greenland, the largest island in the world, appears to have reached a critical point towards 2002-2003 when ice melting quickly accelerated. In 2012, annual ice melting had reached an "unprecedented level" and was almost four times higher than 2003, the geoscientist said in an interview.

However, Greenland is no match for the Antarctic Ice Sheet, which, if completely melted, would cause a rise in sea level of 57 meters. Antarctica is also experiencing an alarming accelerated melting: according to a study published last January 14, the continent loses six times more ice than there is 40 years. On average, over the past decade, it has lost 252 billion tons of ice every year.

It's the same forGlaciers in Western North America, where ice melting has quadrupled since the early 2000, reaching 12,3 billion tons a year, reveals a recent study.

Without acting quickly to significantly reduce carbon emissions that raise the global temperature,all of the Greenland ice could melt, raising the sea level of 7 meters, warns Richard Alley, a Penn State glaciologist. This would happen on a time scale of several centuries. However, there is a threshold of warming that could be achieved in a few decades or less and, if exceeded long enough, the melting of Greenland would be irreversible, said Alley.

What festivities ...

"We are losing the race", says UN Secretary-General Antonio Guterres
The commitments made in Paris in 2015 were "insufficient", judged Antonio Guterres, Thursday, on the sidelines of the Forum world economy of Davos. "Countries need to make more ambitious commitments," he added.
In the margins of Forum world economy in Davos (Switzerland), Thursday January 24, Antonio Guterres, the UN Secretary General, made a statement that did not go unnoticed.

"The evolution is worse than expected" and"It is therefore absolutely essential to reverse the trend", he insisted, addressing in particular the 3 000 economic and political leaders gathered since the beginning of the week in this station of the Swiss Alps. https://www.francetvinfo.fr/meteo/clima ... 59727.html

[Christophe]

In Greenland, ice melts four times faster than what scientists expected

We found the cold! He is on the USA!

The United States expects "temperatures so low that we will hear the buildings crack"

One of the biggest cold spells ever known is expected to drop temperatures to -50 ° C in some places on Wednesday.

If we expect, in France, a cold and snow from Tuesday 29 January afternoon, it is, across the Atlantic, low temperature records that should be beaten. From Wednesday morning, the United States should be crossed by one of the largest cold waves ever known, according to experts in meteorology.

While temperatures are expected to drop below - 15 ° C on the east coast, it is in the Midwest that historical cold records could be achieved. It should do - 29 ° C in Chicago (Illinois), and the state of Minnesota expects wind squalls near-54 ° C in some places. Asked by the New York Yimes, Tom Skilling, head meteorologist of the TV channel WGN-TV in Chicago, predicts "forty-eight hours of low temperatures that we will hear buildings and street furniture crack".

Polar swirl
This unusual cold may last for about eight weeks, according to Judah Cohen, an expert at the Boston Center for Environmental and Atmospheric Research. "I think at least we have until mid-February or mid-March," he told the Associated Press (AP) news agency.

This is a phenomenon that specialists call the "polar vortex" ("polar vortex" in French or "polar vortex"); an icy mass of air that should be above the North Pole and is descending to lower latitudes.

(...)

[izentrop]

The slowdown of the gulf stream would not be for nothing. He has already caused the ice age

it is clearly shown that it slows down and weakens. In the event that global warming is the cause, this state of affairs could continue for an indefinite time. In the end, cooling of the waters of the North Atlantic would continue, threatening to cool the climate of Western Europe.

https://actu.lachainemeteo.com/actualit ... imat-47123

[Leo Maximus]

Plants "stuff themselves" with CO2 say climate skeptics. But how do plants behave when the temperature exceeds 40 ° C? Badly, even very badly ...

[izentrop]

Man's action on the climate began well before the industrial era

A new study by scientists at the University College of London (UCL) estimates that an event prior to industrialization caused a rapid cooling of the planet.

Between the arrival of Christopher Columbus in the Caribbean in 1492 and the year 1600 - the first hundred years of the colonization of America - it is estimated that European settlers have caused the death of about 56 million indigenous people.

The cooling of the planet at this time, called "Little Ice Age" is known for a long time. But it was thought that the changes, marked by particularly harsh winters, were solely caused by natural forces.

Professor Mark Maslin, one of the co-authors of the study explains that after compiling archaeological evidence, historical data and carbon analyzes in Antarctica, the influence of the death of the Amerindians is not in doubt: Once we have weighed all the elements, we understand that if the small ice age was so intense, it is because of the genocide of millions of people. http://www.slate.fr/story/173067/drame- ... ent-climat