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Ice sheets and coral reefs: threatening tipping points by no more than 1.5°

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Ice sheets and coral reefs: threatening tipping points by no more than 1.5°

Status: 11/13/2022 11:18 AM

Researchers have identified 16 turning points in the climate system. In an interview, polar researcher Winckelmann explains what these mechanisms are and why some of them could be triggered by 1.5 degree global warming.

tagesschau.de: The Paris climate agreement aims to ensure that the Earth’s temperature does not rise to more than 2 degrees, and if possible no more than 1.5 degrees. write in one The study shows that there is indeed a risk of changes starting from this rise in temperature, which will be irreversible. What could happen exactly?

Ricarda Winkelmann: It concerns the so-called critical points. These are essential parts of the climate system, where, once you’re in a critical state, a perturbation as small as a temperature rise is enough to cause really big changes.

For example, the Greenland ice sheet is an element of the inversion. And we all know the mechanism that makes Greenland a reversal of mountaineering: When we descend from a mountaintop to a valley, it gets warmer around us. It’s the same with ice sheets. If the surface of the ice sheets melted, which is what we already see in Greenland, at some point the surface could plummet to lower elevations. Then it gets warmer there, which causes more melt, the surface sinks more, it gets warmer again and so on.

In other words, it is a self-reinforcing mechanism that could, at a critical point, cause that momentum to take over and almost completely melt Greenland.

Ricarda Winkelmann

The polar researcher works at the Potsdam Institute for Climate Impact Research and mainly researches changes in the Arctic and Antarctic ice sheets.

„Some irreversible changes”

tagesschau.de: Flag identified 16 of these critical points. They systematically recorded them in their study and assessed the temperature rise at which their tipping points are triggered. For some, it’s too fast.

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Winkelman: Solstice elements include, for example, the Antarctic ice sheet, the Amazon rainforest, the Atlantic circulation, and coral reefs. We now understand the mechanisms that turn these domains into tipping points and that there can also be irreversible changes.

And what we’ve shown in our study is that even at 1.5 degrees to 2 degrees — that is, in the temperature range of the Paris Climate Agreement — we come into this danger zone for some of these inversions. However, the Greenland and Antarctic ice sheets are among the overturning elements most at risk, as are coral reefs.

The problem is „self-reinforcing mechanisms”

tagesschau.de: As temperatures rise, there are more and more extreme weather events all over the world. Does this extreme weather also exist in the polar regions?

Winkelman: Yes, there is also severe ice weather. For example, just last year we observed an extreme melting of the Greenland ice sheet. This is one of a whole series of extreme melt events. It was caused by the area of ​​high pressure that hung over Greenland and then increasingly led to the melt. And in extreme cases, for example in 2012, this meant that almost the entire surface of the ice sheet was covered with meltwater for several days.

tagesschau.de: Why does the temperature rise, especially at the poles?

Winkelman: The temperature in the polar regions is rising faster than the global average temperature. This is due to the so-called polar amplification. It is this effect that again occurs through this self-reinforcing mechanism, the so-called ice-white reactions.

You can imagine it like this: Everyone knows that a dark surface absorbs more radiation than a light surface. On the other hand, shiny surfaces reflect more. And this is what happens on a large scale, so to speak, in the climate system. Bright surfaces – such as icy surfaces – radiate part of the solar radiation back into space and have a cooling effect, so to speak.

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However, when the ice melts, the shiny surface decreases. Instead, the dark ocean surface appears, which we are already increasingly observing in the Arctic. So it gets darker and therefore, so to speak, warmer again. This is one of the effects that leads to this polar reinforcement.

tagesschau.de: In 2020, the temperature reached 38 degrees in the Arctic for the first time. Did that surprise you?

Winkelman: yes. You can’t really prepare for such extreme weather events. We all know that with global warming, extreme weather events are also increasing, becoming more severe and also lasting longer. But that’s why you can’t necessarily predict individual events and in this regard the high temperatures of 38 degrees in the Arctic and 18 degrees on the Antarctic Peninsula Surprise us too. So record the temperatures from pole to pole.

What happens under the ice?

tagesschau.de: What do you still need to better understand scientifically in polar research?

Winkelman: One of the greatest uncertainties is what is actually happening under the ice. Because of course we can’t take a closer look at it. There are observational techniques you can use to try to get a closer look at the soil under the ice, for example. We know that increased thawing at the surface means that more meltwater is entering the ice sheet and thus also under the ice sheet, i.e. on land, and can lead to an acceleration of the ice flow. Simply by the fact that the ice is sliding on the water instead of freezing on the land.

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And these are impacts on the lower side of the ice, where it’s very important that we have more observations, and collect more data in order to better understand what’s really going on under this ice, which is about five kilometers thick in Antarctica.

tagesschau.de: Where is it easier to read global warming at the moment: the Arctic or the Antarctic?

Winkelman: Drastic changes can already be seen in both polar regions, including changes that have surprised even us researchers. Arctic sea ice is shrinking and it is predicted that even under the most optimistic climate scenario, the Arctic will be ice-free for the first time in summer by mid-century. This is of course a drastic change. One of the many icy landscapes.

We also see this in mountain glaciers. I was myself in the Andes two years ago and went there to check glaciers for microplastic particles. Going up to Chimborazo, we already expected a glacier at an altitude of about 5,000 meters and wanted to take our measurements there. And when we got there – as you can imagine, this was way too strenuous at high altitude – we had to realize that the icy tongue is actually no longer where we expected it to be a few years ago. And that was one of those moments when I saw how powerful and comprehensive our interference with the climate system was.

Interviewed by Cornelia Julitz-Sitzger, HOUR

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A man finds luxury clothes worth 64 thousand euros News

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A man finds luxury clothes worth 64 thousand euros  News

Wade Venture (37) staunte nicht schlecht, als er das Rolltor zu einer Lagerbox in Portland (US-Bundesstaat Oregon) öffnete und begann, in den Kisten zu stöbern, die sich dort türmten.

Der Amerikaner hatte die verlassene Einheit bei einer Versteigerung für umgerechnet etwas mehr als 370 Euro ergattert. Dann stellte sich heraus: Der Inhalt war 70 000 Dollar (mehr als 64 000 Euro) wert!

Der Kauf war ein „Blind-Kauf“

Venture hat Erfahrung mit solchen „Blind-Käufen“: Nach eigener Aussage hat er bereits zwischen 400 und 500 Lagerräume gekauft. Und er schlug auch bei diesem zu – ohne zu wissen, was ihn erwarten würde. Doch einen solchen Schatz hatte er noch nie gefunden. Unglaublich: Die Vorbesitzerin der Box hatte Designerkleidung ohne Ende hinterlassen – unbenutzt!

Hunderte Schuhe entdeckte Wade in dem Lagerraum

Foto: action press

Unter den Fundstücken: Schuhe von Luxus-Labels wie Gucci

Unter den Fundstücken: Schuhe von Luxus-Labels wie Gucci

Foto: action press

Es war unfassbares Glück

Venture gegenüber US-Medien fassungslos: „Es ist selten, dass man eine solche Einheit findet, oft findet man Haushaltsgegenstände oder Müll.“ In der Vergangenheit hatte er den minderwertigen Inhalt seiner „Fundgruben“ oft einfach für wohltätige Zwecke gespendet. Venture weiter: „Die Leute denken, ich mache das schon so lange, dass ich schon alles gesehen habe, aber so eine Einheit habe ich noch nie gefunden.“

Wade zeigt einen der Mäntel aus seiner Fundgrube

Wade zeigt einen der Mäntel aus seiner Fundgrube

Foto: action press

Auch reichlich Handtaschen hatte die Vorbesitzerin in dem Raum gelagert

Auch reichlich Handtaschen hatte die Vorbesitzerin in dem Raum gelagert

Foto: action press

Hunderte Paare nagelneuer Schuhe

Unter den Fundstücken in seiner neuesten Schnäppchen-Schatztruhe: Mehr als 400 Paar Schuhe (u.a. von der Luxus-Marke Gucci), Pelzmäntel und Accessoires im Wert von mehreren Tausend Dollar. Viele der Stücke trugen sogar noch die originalen Verkaufsetiketten.

Besitzerin hatte wohl Problem mit Shopping

Der glückliche Finder: „Normalerweise finde ich Dinge, die zu 30 Prozent neu und zu 70 Prozent gebraucht sind. Aber das hier war alles brandneu.“ Mittlerweile hat er damit angefangen, die Kleidungsstücke zu verkaufen. Allein für einen der Mäntel bekam er 1500 Dollar (rund 1400 Euro), berichtet Venture.

Eine Theorie über die Vorbesitzerin der Lagerbox hat er auch. Venture: „Es ist mehr als wahrscheinlich, dass sie ein Shopping-Problem hatte.“

Und weiter: „Man munkelt, dass sie das vielleicht vor ihrem Mann geheim halten musste.“

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Prime Minister assassination attempt: Slovakia comes together after the shooting of Robert Fico – despite all the polarization

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Prime Minister assassination attempt: Slovakia comes together after the shooting of Robert Fico – despite all the polarization

DrSlovak MP Lubos Blaha is not exactly known for his soft tones. Even on Wednesday, shortly after learning of an attack on Prime Minister Robert Fico, left-wing populist Blaha, a Fico supporter, had not backed down. “This anger, this anger, this hatred: this is your job today,” he told Slovak TV cameras. “The opposition, the progressives and the liberal media. “We are full of emotions,” Blaha said. The fact that FICO is unpopular with all segments of the population is due, among other things, to the planned judicial and media reform.

Milan Nick, an expert on Eastern Central Europe at the German Foreign Policy Association, is not surprised by this reaction. “It does not surprise me that Blaha, known for such rhetoric, would say this. But so far it has been an exception, as many politicians from various parties, including Fico Smer’s party, have expressed their dissatisfaction and called for calm and caution.

Robert Fico, here in Budapest in January

Source: Associated Press/Denis Erdos

In fact, Liberal President Zuzana Čaputová gave a well-received speech. She clearly condemned the attack and wished „that Robert Fico would have a lot of strength at this critical moment so that he could recover from the attack. Peter Pellegrini, the president-elect, made a similar statement.” Pellegrini comes from the government coalition led by Robert Fico and was elected president in April. However, he will not be sworn in until June.

Meanwhile, 59-year-old Fiko is still receiving treatment in hospital in the town of Banska Bystrica. His deputy, Thomas Taraba, told the BBC late on Wednesday evening that he appeared to have survived an emergency operation after the attack and was no longer in a life-threatening situation. Slovak media reported early Thursday morning that Fico had regained consciousness.

After a cabinet meeting on Wednesday in the town of Handelova, when Fico went out into the street, a 71-year-old man fired four to five shots at him. The suspected perpetrator was arrested at the scene and the Prime Minister was airlifted to hospital by helicopter.

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Concerns about state restructuring

Government officials assume a „political motive.” There are many photos and video recordings of the attack itself. Slovak news platform aktuality.sk She also stated that the suspected killer was legally in possession of a gun. The 71-year-old was not undergoing psychiatric treatment. These rumors have been reported previously.

There is also speculation on social media in Slovakia about the possible politicization of the alleged killer. This intensifies the already heated mood in the country, which reached two peaks during the parliamentary elections in September last year and the presidential elections in April this year.

Security forces arrested the suspected shooter at the scene

Security forces arrested the suspected shooter at the scene

Source: Agence France-Presse/-

Both elections were accompanied by an aggressive mood and disinformation campaigns on social media, as well as questionable rhetoric by the actors involved. Fico’s Smer Party considers itself a social democratic party, but in the eyes of many observers it is characterized as a left-wing nationalist. It became the strongest force in the recent parliamentary elections, with 22.9 percent of the votes. In October 2023, Fico was able to assume the reins of government in a coalition with the Social Democratic Party of Halas and the far right.

He is considered a veteran of Slovak politics, having ruled from 2006 to 2010 and from 2012 to 2018. His companion Peter Pellegrini won the presidential election in April. Fico polarized the country for several months and thousands of Slovaks took to the streets against his policies.

There are major concerns among many Slovaks about an authoritarian state restructuring similar to what happened in Hungary or Poland. The Slovak Parliament approved a first legislative package in April as part of a controversial judicial restructuring process. The law provides, among other things, for the dissolution of the Special Public Prosecutor’s Office or the reduction of penalties for serious crimes such as murder.

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The EU Commission has already expressed concern that the so-called judicial reform could violate EU law. In addition, there are verbal attacks on journalists from politicians – and concrete plans to control the media. Public television station RTVS is set to be transformed into a state broadcaster over which the government will have enormous influence. A similar law could be passed in June.

Before the Cabinet meeting in Handelova, Fico received local residents.  After the meeting he was shot

Before the Cabinet meeting in Handelova, Fico received local residents. After the meeting he was shot

Source: German Press Agency/Radovan Stoklasa

The NGO Transparency Law also made international headlines. If an organization receives €5,000 or more from abroad in one year, it should in the future be classified as an “organisation receiving support from abroad”. Critics fear the government will ban organizations it doesn’t like as a result.

Fico also reoriented Slovakia’s foreign policy. He himself and other members of the government have loudly criticized the course of the European allies towards Russia and Ukraine. Fico criticizes Russian sanctions as well as arms shipments to Ukraine. His government stopped supplying weapons from Slovak stockpiles to Ukraine. The partly pro-Russian policy of Slovakia, a member of the European Union and NATO, is also worrying diplomats and politicians in Brussels and other European capitals.

It is striking that Slovak society now seems to be uniting and that politicians from different political camps are strongly condemning the attack. Religious organizations, bishops and Islamic associations also commented on this. Expert Nick said, „The assassination attempt on Fico represents a turning point for Slovak politics, regardless of whether he will be able to take office again or not.”

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Bratislava, the capital of Slovakia

Another turning point for Slovakia was the murder of investigative journalist Jan Kuciak and his fiancée Martina Kusnirova in 2018. Through his research, Kuciak uncovered organized crime connections in Slovak politics. He worked for aktuality.sk, a news portal of Ringier Axel Springer Slovakia, a joint venture between Axel Springer SE (including WELT and “Bild”) and Swiss Ringier AG.

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The murder of Kuciak and his fiancée attracted much attention in Slovakia and internationally. Fico, who was prime minister at the time, was forced to resign after mass protests following the killings. Even then, Fico’s policies were radically rejected by many Slovaks, but he always enjoyed a stable fan base, as demonstrated by his recent electoral victory in 2023.

However, expert Nick does not see a direct link between the assassination attempt on Fico and the murder of journalist Jan Kuciak and his wife. “This aggression against politicians and the cruelty of the conflict is not just a Slovak phenomenon. We see something like this everywhere in Europe, and unfortunately also attacks on politicians. Look at Germany: from the assassination attempt on Wolfgang Schäuble many years ago to the recent attacks on politicians,” says Nick.

Speculation about the paramilitary organization

Despite voices calling for calm in Slovakia, observers are also concerned that the government camp, after a brief period of calm, will use the attack to further divide society and consolidate its power. Blaha statements are the first sign. Fake news is also likely to spread quickly on social media, and disinformation campaigns can be launched.

The evening after the attack on Fiko, a report was published in Slovak online media that was likely to increase speculation about the background of the crime: the famous Hungarian investigative journalist Száblocs Bánje shared old photos of the alleged killer, which had a connection to a loyalist Slovak paramilitary women’s organization. For Russia, it is called the „Slovak Brotherhood”. Photos from 2016 are considered original.

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“However, in the next few days we are likely to see an increase in disinformation campaigns and the like on social networks. What happened is a reason for this,” says Milan Nick. But a lot will depend on whether Fico will survive the attack.

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Georgians continue their protests against the controversial law

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Georgians continue their protests against the controversial law

As of: May 15, 2024 at 10:12 p.m

The day after the controversial NGO law was passed, tens of thousands protested again in Georgia. The foreign ministers of European Union countries also participated. Meanwhile, Türkiye announced a similar proposed law.

In Georgia, tens of thousands of people took to the streets again to protest a recently passed law on “foreign influence.”

An Agence France-Presse journalist reported that about 30,000 people gathered in front of Parliament in the capital, Tbilisi, on Wednesday alone. Demonstrations also took place in the cities of Kutaisi and Zalinghikha in the west of the country.

European ministers demonstrate

The foreign ministers of Estonia, Iceland and Lithuania, who were visiting Georgia, also participated in the protests in Tbilisi. Senior diplomats addressed the demonstrators.

Lithuanian Foreign Minister Gabrielius Landsbergis told AFP that he and his colleagues participated in the protest „to support the desire of the Georgian people to become part of the European Union and NATO.” The Georgian national anthem and the European anthem „Ode to Joy” were played at the demonstration.

The demonstrators waved the flags of Georgia and the European Union.

Parliament in Tbilisi approved the controversial law on Tuesday. According to this, organizations and media that receive at least 20% of funding from abroad must in the future be registered in the former Soviet republic as bodies “pursuing the interests of foreign powers.”

Similarities with Russian law

Critics see similarities with the law against „foreign agents” in Russia, which enables authorities there to take wide-ranging measures against critical media and organizations. There have been massive protests against the law in Georgia for weeks.

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The adoption of the law sparked international criticism. The European Union, the United Nations and NATO called on the government in Tbilisi to change course. It also called on the federal government to withdraw the law. Georgia has been an official candidate for European Union membership since December. With the new law, it has become difficult to imagine the European future of this Caucasian country.

Türkiye plans to issue a similar law

On the other hand, a draft law has been introduced in neighboring Turkey requiring the imprisonment of journalists and scholars who work for foreign “interests”. The proposed amendment to the Turkish Penal Code stipulates prison sentences ranging from three to seven years, according to the text obtained by Agence France-Presse.

The draft law applies to “any person who conducts or orders the conduct of research on (Turkish) citizens or institutions on behalf of or for the strategic interest of a foreign organization or state in order to act against the security, political, internal or external interests of the state.” „.

Björn Blaschke, ARD Moscow, now Tbilisi, Tagesschau, May 15, 2024 at 7:13 am

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