• úvod
  • témata
  • události
  • tržiště
  • diskuze
  • nástěnka
  • přihlásit
    registrace
    ztracené heslo?
    TUHOKlimaticka zmena / Destroying the Future Is the Most Cost-Effective


    "Given the sheer enormity of climate change, it’s okay to be depressed, to grieve. But please, don’t stay there too long. Join me in pure, unadulterated, righteous anger."


    "I don’t want your hope. I don’t want you to be hopeful. I want you to panic. I want you to feel the fear I feel every day. And then I want you to act. Once you start to act, the hope is everywhere."

    "Our best scientists tell us insistently that a calamity is unfolding, that the life-support systems of the Earth are being damaged in ways that threaten our survival. Yet in the face of these facts we carry on as usual."

    “We’ve got to stop burning fossil fuels. So many aspects of life depend on fossil fuels, except for music and love and education and happiness. These things, which hardly use fossil fuels, are what we must focus on.”

    A nejde o to, že na to nemáme dostatečné technologie, ty by na řešení použít šly, ale chybí nám vůle a představivost je využít. Zůstáváme při zemi, přemýšlíme až moc rezervovaně. Technologický pokrok to sám o sobě nevyřeší. Problém jsme my, ne technologické nástroje.

    Rostouci hladiny oceanu, zmena atmosferickeho proudeni, zmeny v distribuci srazek a sucha. Zmeny karbonoveho, fosforoveho a dusikoveho cyklu, okyselovani oceanu. Jake jsou bezpecnostni rizika a jake potencialni klady dramatickych zmen fungovani zemskeho systemu?
    Ale take jak funguji masove dezinformacni kampane ropneho prumyslu a boj o verejne mineni na prahu noveho klimatickeho rezimu post-holocenu.
    rozbalit záhlaví
    PER2
    PER2 --- ---
    SHEFIK: gronsko povidas :)

    EXCEPTIONAL WARMTH IN THE ARCTIC
    Very mild air is flowing towards the high latitudes:
    Today exceptional 17.6 in ICELAND and temperatures already above freezing in the SVALBARD (and will remain so 24/7 for few days).
    We will see records in from Alaska to Canada to Greenland.

    SHEFIK
    SHEFIK --- ---
    Catastrophic tipping point in Greenland reached as crystal blue lakes turn brown, belch out carbon dioxide | Live Science
    https://www.livescience.com/planet-earth/climate-change/catastrophic-tipping-point-in-greenland-reached-as-crystal-blue-lakes-turn-brown-belch-out-carbon-dioxide

    Record heat and rain turned thousands of Greenland lakes brown in 2022 as they hit a tipping point and began emitting carbon dioxide.
    ...
    Less sunlight was able to penetrate the lakes as they darkened, which had a ripple effect on the microscopic plankton living in the water. The number of plankton absorbing CO₂ through photosynthesis — the process of turning sunlight into energy — declined, while the amount of plankton breaking down and releasing carbon increased, according to a statement released by the University of Maine.

    The lakes normally absorb CO₂ in the summer, but by the following year they had flipped to become carbon dioxide producers. These types of widespread changes would normally take centuries. Researchers have observed the browning of lakes across the Northern Hemisphere, including the U.S., but it typically takes multiple decades — much longer than the transformation of Greenland's lakes.
    TADEAS
    TADEAS --- ---
    Donald Trump says residents of Greenland want to be part of US | Donald Trump | The Guardian
    https://www.theguardian.com/us-news/2025/jan/26/donald-trump-residents-greenland-us

    Strategically located between the US and Europe, Greenland is a potential geopolitical battleground, as the climate crisis worsens.

    The rapid melting of the island’s huge ice sheets and glaciers has raised interest in oil drilling (although Greenland in 2021 stopped granting exploration licences) and mining for essential minerals including copper, lithium, cobalt and nickel.

    Melting Arctic ice is also opening up new shipping routes, making alternatives to the Suez canal, while the Panama canal is seeing less traffic as a result of severe drought.

    Since the cold war, Greenland is also home to a US military base and its ballistic missile early warning system.
    TADEAS
    TADEAS --- ---
    zabit a snist


    ‘If I’m sent to Japan, I’m not coming home’: jailed anti-whaler defiant in face of extradition threat | Sea Shepherd Conservation Society | The Guardian
    https://www.theguardian.com/environment/2024/dec/01/sea-shepherd-paul-watson-whaling-activist-prison

    It is over four months since Watson – an eco-terrorist to some and a brave environmentalist to others – was brought here to Anstalten, a high-security jail perched on the frozen coast of south-east Greenland after being arrested while refuelling his ship, MV John Paul DeJoria, in nearby Nuuk, the capital of the autonomous Danish territory.


    He had been on his way with a 32-strong crew to practise his decades-long policy of “non-violent aggression” by intercepting a new Japanese whaling “mothership”, the ¥7.5bn ($47.4m) Kangei Maru. But shortly after tying up his vessel in the harbour “a nice police car turned up” and 12 armed officers boarded.

    ...

    The arrest on 21 July had been prompted by an Interpol red notice issued by Japan whose government accuses Watson of conspiracy to trespass, interrupt a business and cause damage to the Shonan Maru 2 whaling ship in 2010 in the Antarctic – but also, crucially, to lightly injure a Japanese crew member via the mild acid from a stink bomb.

    He was not at the scene of the alleged crime and denies playing any commanding role in it, but on Monday Watson is expecting to mark his 74th birthday by being told by a judge that his detention in Greenland will be extended by at least another month as the Ministry of Justice in Copenhagen continues to weigh up a Japanese demand for his extradition on charges that could see him jailed for up to 15 years.
    CHOSIE
    CHOSIE --- ---
    https://www.nature.com/articles/s43247-024-01799-5
    Polar ice sheets (Greenland and West Antarctic ice sheets) are most decisive for tipping likelihoods and cascading effects within our model. At a global warming level of 1.5  °C, neglecting the polar ice sheets can alter the expected number of tipped elements by more than a factor of 2. This is concerning as overshooting 1.5  °C of global warming is becoming inevitable, while current state-of-the-art IPCC-type models do not (yet) include dynamic ice sheets.
    CHOSIE
    CHOSIE --- ---
    Researchers point out that the Atlantic Meridional Overturning Circulation (AMOC) is now weaker than at any other time in the past 1,000 years.

    “Our results show the Atlantic overturning circulation is likely to become a third weaker than it was 70 years ago at 2°C of global warming,” says the research team.

    “This would bring big changes to the climate and ecosystems, including faster warming in the southern hemisphere, harsher winters in Europe, and weakening of the northern hemisphere’s tropical monsoons.”

    Think about that for a second. A weaker ocean current could mean colder winters in Europe and shifts in rainfall patterns that affect millions of people. It’s not just about the ocean; it’s about our daily lives.

    Climate projections have suggested the Atlantic overturning circulation will weaken by about 30% by 2060. But hold on — that’s without considering all that extra meltwater.

    “The Greenland ice sheet will continue melting over the coming century, possibly raising global sea level by about 4 inches,” the study notes.

    “If this additional meltwater is included in climate projections, the overturning circulation will weaken faster. It could be 30% weaker by 2040. That’s 20 years earlier than initially projected.”
    https://www.earth.com/news/collapse-of-main-atlantic-ocean-circulaton-current-amoc-is-already-happening/
    Weakening of the Atlantic Meridional Overturning Circulation driven by subarctic freshening since the mid-twentieth century | Nature Geoscience
    https://www.nature.com/articles/s41561-024-01568-1
    TUHO
    TUHO --- ---
    PALEONTOLOG: Ad Alpy a doby ledovy: Jo? Tak tech linii mohlo bejt vic.
    Nicmene je mozny, ze to tam zjednodusil moc, mam za to, ze mluvi o praci Louise Agassize a mam totiz zato, ja to cetl i v jinym zdroji o historii klimatologie, ale za boha si ted nemuzu vzpomenout kde...

    Jinak trosku vic rozepsany ma ten popis Weart tady:
    Past Climate Cycles: Ice Age Speculations
    https://history.aip.org/climate/cycles.htm

    jinak prispevek na wiki o Agassizovi

    The vacation of 1836 was spent by Agassiz and his wife in the little village of Bex, where he met Jean de Charpentier and Ignaz Venetz. Their recently announced glacial theories had startled the scientific world, and Agassiz returned to Neuchâtel as an enthusiastic convert.[10] In 1837, Agassiz proposed that the Earth had been subjected to a past ice age.[11] He presented the theory to the Helvetic Society that ancient glaciers flowed outward from the Alps, and even larger glaciers had covered the plains and mountains of Europe, Asia, and North America and smothered the entire Northern Hemisphere in a prolonged ice age. In the same year, he was elected a foreign member of the Royal Swedish Academy of Sciences. Before that proposal, Goethe, de Saussure, Ignaz Venetz, Jean de Charpentier, Karl Friedrich Schimper, and others had studied the glaciers of the Alps, and Goethe,[12] Charpentier, and Schimper[11] had even concluded that the erratic blocks of alpine rocks scattered over the slopes and summits of the Jura Mountains had been moved there by glaciers. Those ideas attracted the attention of Agassiz, and he discussed them with Charpentier and Schimper, whom he accompanied on successive trips to the Alps. Agassiz even had a hut constructed upon one of the Aar Glaciers and for a time made it his home to investigate the structure and movements of the ice.[4]

    Agassiz visited England, and with William Buckland, the only English naturalist who shared his ideas, made a tour of the British Isles in search of glacial phenomena, and became satisfied that his theory of an ice age was correct.[10] In 1840, Agassiz published a two-volume work, Études sur les glaciers ("Studies on Glaciers").[13] In it, he discussed the movements of the glaciers, their moraines, and their influence in grooving and rounding the rocks and in producing the striations and roches moutonnées seen in Alpine-style landscapes. He accepted Charpentier and Schimper's idea that some of the alpine glaciers had extended across the wide plains and valleys of the Aar and Rhône, but he went further by concluding that in the recent past, Switzerland had been covered with one vast sheet of ice originating in the higher Alps and extending over the valley of northwestern Switzerland to the southern slopes of the Jura. The publication of the work gave fresh impetus to the study of glacial phenomena in all parts of the world.[14]

    Familiar then with recent glaciation, Agassiz and the English geologist William Buckland visited the mountains of Scotland in 1840. There, they found clear evidence in different locations of glacial action. The discovery was announced to the Geological Society of London in successive communications. The mountainous districts of England, Wales, and Ireland were understood to have been centres for the dispersion of glacial debris. Agassiz remarked "that great sheets of ice, resembling those now existing in Greenland, once covered all the countries in which unstratified gravel (boulder drift) is found; that this gravel was in general produced by the trituration of the sheets of ice upon the subjacent surface, etc."[15]

    Louis Agassiz - Wikipedia
    https://en.wikipedia.org/wiki/Louis_Agassiz
    TADEAS
    TADEAS --- ---
    ‘Oh my God, what is that?’: how the maelstrom under Greenland’s glaciers could slow future sea level rise | Glaciers | The Guardian
    https://www.theguardian.com/environment/article/2024/sep/06/how-the-maelstrom-under-greenlands-glaciers-could-slow-future-sea-level-rise

    current models do not take account of a big possible factor: the huge mounds of ground rock that some glaciers pile up in front of them, blocking their paths and insulating them from ever hotter oceans. These could function as “speed bumps”, effectively slowing the impact of global heating. But the role this plays is unknown because researchers had never been able to scrutinise the hellish zone where mighty glaciers, rock and ocean meet.

    TERMINUS: Studying Greenland’s Underwater Glacial Walls
    https://ig.utexas.edu/terminus-studying-greenlands-underwater-glacial-walls/
    TUHO
    TUHO --- ---
    PALEONTOLOG: Pardonek

    UVM Scientists Unearth Bad News for Our Climate Future Beneath the Greenland Ice Sheet | Seven Days Vermont
    https://www.sevendaysvt.com/news/uvm-scientists-unearth-bad-news-for-our-climate-future-beneath-the-greenland-ice-sheet-39281796
    TUHO
    TUHO --- ---
    TUHO: Ale safra, tohle je zajimavy taky, ale chtel jsem poslat toto:

    The plan, called Project Iceworm, was ostensibly top secret, though an article published in Popular Science in the early 1960s disclosed the military's intention to build a "subway under the ice" that would shuttle as many as 600 ballistic missiles through a network of tunnels, making them less vulnerable to a Soviet first strike.

    In 1959, the U.S. Army Corps of Engineers began building a military base, Camp Century, buried 150 feet below the surface of the Greenland ice cap. The base had chemistry labs, hot showers, a chapel, a movie theater and as many as 200 inhabitants who lived there year-round. The nuclear missiles were never deployed, but the entire base was powered by a portable nuclear reactor.

    Part of the Army's interest in Camp Century, in addition to hiding nuclear missiles, was to study the feasibility of living and traveling in extreme environments in the event of conflict with the Soviet Union in the far north. By the 1950s, the military had documented the retreat of arctic sea ice. If the ice were to melt, the military needed to know how that would affect its ability to defend against a Soviet attack over the arctic circle.
    TADEAS
    TADEAS --- ---
    TUHO
    TUHO --- ---
    trochu ot, ale dobrej magorinec

    “These fossils are beautiful,” says Paul Bierman, a scientist at the University of Vermont who co-led the new study with UVM graduate student Halley Mastro and nine other researchers, “but, yes, we go from bad to worse,” in what this implies about the impact of human-caused climate change on the melting of the Greenland ice sheet.

    https://www.sevendaysvt.com/news/uvm-scientists-unearth-bad-news-for-our-climate-future-beneath-the-greenland-ice-sheet-39281796https://www.sevendaysvt.com/news/uvm-scientists-unearth-bad-news-for-our-climate-future-beneath-the-greenland-ice-sheet-39281796

    SHEFIK
    SHEFIK --- ---
    Po tech bleskovejch povodnich, trocha sea level catastrophe

    Greenland fossil discovery reveals increased risk of sea-level catastrophe | ScienceDaily
    https://www.sciencedaily.com/releases/2024/08/240805164411.htm

    A new study provides the first direct evidence that the center -- not just the edges -- of Greenland's ice sheet melted away in the recent geological past and the now-ice-covered island was then home to a green, tundra landscape.
    ...
    "This new study confirms and extends that a lot of sea-level rise occurred at a time when causes of warming were not especially extreme," said Richard Alley, a leading climate scientist at Penn State who reviewed the new research, "providing a warning of what damages we might cause if we continue to warm the climate."
    ...
    Sea level today is rising more than an inch each decade. "And it's getting faster and faster," said Bierman. It is likely to be several feet higher by the end of this century, when today's children are grandparents. And if the release of greenhouse gases -- from burning fossil fuels -- is not radically reduced, he said, the near complete melting of Greenland's ice over the next centuries to a few millennia would lead to some 23 feet of sea level rise.

    "Look at Boston, New York, Miami, Mumbai or pick your coastal city around the world, and add twenty plus feet of sea level," said Bierman. "It goes underwater. Don't buy a beach house."
    TADEAS
    TADEAS --- ---
    ecosystem wars

    Sea Shepherd founder and anti-whaling activist Paul Watson arrested in Greenland | Greenland | The Guardian
    https://www.theguardian.com/world/article/2024/jul/22/paul-watson-arrested-greenland-sea-shepherd-founder-and-anti-whaling-activist
    TADEAS
    TADEAS --- ---
    L Simons

    This is what the 30 million tonnes of ice that Greenland loses every hour looks like, if it were positioned next to the Eiffel tower before melting

    GJJliph-XAAAR11-G

    Greenland losing 30m tonnes of ice an hour, study reveals | Ice | The Guardian
    https://www.theguardian.com/environment/2024/jan/17/greenland-losing-30m-tonnes-of-ice-an-hour-study-reveals
    TADEAS
    TADEAS --- ---
    WCD - European summer weather linked to North Atlantic freshwater anomalies in preceding years
    https://wcd.copernicus.org/articles/5/109/2024/

    Melt rate of Greenland ice sheet can predict summer weather in Europe, scientist says | Environment | The Guardian
    https://www.theguardian.com/environment/2024/mar/14/melt-rate-greenland-ice-sheet-can-predict-summer-weather-in-europe-scientist-says
    TADEAS
    TADEAS --- ---
    helping hand

    Von der Leyen heads to Greenland as EU seeks materials for green transition | Greenland | The Guardian
    https://www.theguardian.com/world/2024/mar/14/von-der-leyen-greenland-office-eu-green-transition

    She said the minerals agreement is about “benefits on both sides”. Greenland needs bilateral cooperation to develop its mineral sector, she said, which requires significant capital and long-term investment.

    “Development of mines, exports of minerals is of course an important issue for the diversification of the Greenlandic economy,” she said. While fishing, the current top source of income, is not expected to be overtaken for many years, the tourism and minerals sectors are important focuses for growth.

    “If the western world wants sustainable diversified secure value chains, some of these minerals will need to come from countries that are smaller, like Greenland. We don’t have the economic muscles to invest ourselves in the mineral sector,” she said.

    In order to enable the green transition, a “helping hand” from larger economies would be needed, she added.
    TADEAS
    TADEAS --- ---
    Climate experts sound alarm over thriving plant life at Greenland ice sheet | Greenland | The Guardian
    https://www.theguardian.com/world/2024/feb/13/flourishing-vegetation-greenland-ice-sheet-alarm-climate-crisis
    ZAHRADKAR
    ZAHRADKAR --- ---
    New study reports that Greenland is a methane sink rather than a source – University of Copenhagen
    https://science.ku.dk/english/press/news/2024/new-study-reports-that-greenland-is-a-methane-sink-rather-than-a-source/

    Researchers at the University of Copenhagen have concluded that the methane uptake in dry landscapes exceeds methane emissions from wet areas across the ice-free part of Greenland. The results of the new study contribute with important knowledge for climate models. The researchers are now investigating whether the same finding applies to other polar regions.
    DZODZO
    DZODZO --- ---
    22DAEMON: postavene do perspektivy:

    "The scale of climate change can be a bit mind-boggling at times.

    For example, the Greenland ice sheet has lost over 6 trillion metric tons of ice since 1970 – or more than 700 tonnes lost per person for every person on the planet today"
    Kliknutím sem můžete změnit nastavení reklam