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    ztracené heslo?
    TUHOKlimaticka zmena / If the fracturing of our once stable climate doesn’t terrify you, then you don’t fully understand it
    PETER_PAN
    PETER_PAN --- ---
    Indii spalují vedra. Vyčerpaní ptáci padají z nebe na zem - Novinky.cz
    https://www.novinky.cz/zahranicni/clanek/indii-spaluji-vedra-vycerpani-ptaci-padaji-z-nebe-na-zem-40396725
    TADEAS
    TADEAS --- ---
    Whose science to believe? by Christopher Cooke
    https://www.3lm.network/whose-science-to-believe

    It is clear that Walter Jehne, George Monbiot and Allan Savory all care deeply about Nature and the imperative for the continuance of life on Earth.

    But, how do you and I make sense of what each is saying without their story inadvertently leading to a destructive outcome?

    Tweaking Howard Bloom’s first principle of science with a focus on all life provides a navigational touchstone for discerning the science, the tools, and the methods to believe and use:

    Examining that which is under my nose and seeking the truth as if all-life, including my-life, depends upon it.

    I am not saying this is easy. Previous civilisations have collapsed as they failed to cope with the unintended consequences of their Nature-dominating perspectives and actions.
    SHEFIK
    SHEFIK --- ---
    SCHWEPZ: perfektni, to nam urcite prinese stabilizaci/jistotu predpovednich modelu klimaticke zmeny :)
    SCHWEPZ
    SCHWEPZ --- ---
    Oceány ztrácí teplotní paměť. Přichází o místa, kde se dosud držela místa s teplou i studenou vodou | Plus
    https://plus.rozhlas.cz/oceany-ztraci-teplotni-pamet-prichazi-o-mista-kde-se-dosud-drzela-mista-s-teplou-8742910

    Oceány ztrácejí některé své stálé vlastnosti, na které se vědci mohli spolehnout při nejrůznějších předpovědích. O každoročně stejně teplých nebo chladných místech v mořských vodách vědci mluví jako o „paměti“ oceánu. Ta je teď podle nich kvůli globálnímu oteplování v ohrožení. A jak předpovídají, do konce tohoto století pravděpodobně zmizí nadobro.

    (25 min. poslech)
    XCHAOS
    XCHAOS --- ---
    SHEFIK: kolik CO2 uvolní ta přeprava olivínu na pláže? Ne, fakt: dílčí nápady můžou být zajímavé, ale carbon capture není škálovatelných na potřebná čísla. Jasně, použití reaktivního minerálu je zajímavý přístup. Odbourávat CO2 rozpuštěné v mořské vodě může dávat lepší smysl, než ho lapat že vzduchu a navíc bude potřeba zastavit růst kyselosti oceánů.

    Ale základní problém je, že sice si někdo udělá čárku, kolik tun CO2 lapil a vygeneruje emisní povolenku - ale ten proces není škálovatelný aby řešil globální problém. Máš jen omezený množství pláží, kam to můžeš sypat. Přepravit by si musel milióny tun minerálů. Ta přeprava je tak levná jen díky levným fosilním palivům, co spálí ty lodě. Atd.
    DZODZO
    DZODZO --- ---
    XCHAOS: vsetky tie morske riasy be like: "am i a joke to you?" :)))
    SHEFIK
    SHEFIK --- ---
    XCHAOS: ranni davka rychlych generalizaci? Byl bych se svymi vyroky opatrnejsi...

    A Caribbean beach could offer a crucial test in the fight to slow climate change | MIT Technology Review
    https://www.technologyreview.com/2020/06/22/1004218/how-green-sand-could-capture-billions-of-tons-of-carbon-dioxide/

    Research and lab simulations have found that waves will significantly accelerate the breakdown of olivine, and one paper concluded that carrying out this process across 2% of the world’s “most energetic shelf seas” could offset all annual human emissions.
    XCHAOS
    XCHAOS --- ---
    PER2: carbon capture je jedna z nejméně škálovatelných věcí ever. S vyjímku zalesňování, ale i to má svoje limity, kdy pásmo stepí ani nemusí být schopné les udržet.

    Já jako jedinou nadějí vidím expanzi tajgy do bývalé tundry, kdyby tam ovšem pořád nehořelo... jsou to dostatečně rozsáhlé plochy, aby se tam nějaký uhlík hromadí. Ale nesmí tam být sucho a lesní požáry...
    SHEFIK
    SHEFIK --- ---
    #apocalypseNow

    Glacier Dam Overwhelmed by South Asian Heatwave - CleanTechnica
    https://cleantechnica.com/2022/05/10/glacier-dam-overwhelmed-by-south-asian-heatwave/

    As schools across India close early for the summer — unable to operate amid the extreme heat and resulting power shut offs — a massive glacial lake outburst in Pakistan wiped out a bridge, two power plants, and flooded a village as the record-breaking, months-long heatwave grinds on. Record-high temperatures accelerated ice and snow melt, feeding a lake near the Shishpar glacier in northern Pakistan’s Hunza District so quickly it breached its ice dam and dumped 10,000 cubic feet of water per second down the valley. Residents had sufficient warning to evacuate, but the flooding destroyed agricultural land, power projects and some homes.
    PER2
    PER2 --- ---
    YMLADRIS:
    " To reach just one million tons of carbon captured per year, High Hopes would need to get 2,055 massive one-ton balloons into operation, each pulling down a full CO2 tank every 18 hours. And that's assuming year-round availability and no punctures or tears."

    vs

    In 2019, about 43.1 billion tons of CO2 from human activities were emitted into the atmosphere.

    jako byznys plan to zni dobre ale :)
    YMLADRIS
    YMLADRIS --- ---
    kamos technooptimista. takze v pohode, nebo ne? diky za nazor

    High Hopes claims stratospheric breakthrough in direct air CO2 capture
    https://newatlas.com/environment/high-hopes-carbon-capture-balloons/

    "Without funding limitations, we could extract billions of tons of carbon from the air,"
    TADEAS
    TADEAS --- ---
    20220510-210530
    YMLADRIS
    YMLADRIS --- ---
    solidni akcelerace

    SHEFIK
    SHEFIK --- ---
    THE_DARKNESS
    THE_DARKNESS --- ---
    https://mobile.twitter.com/timparrique/status/1523644762045423617 borec postuje vynatky z posledniho IPCC reportu
    TADEAS
    TADEAS --- ---
    TADEAS
    TADEAS --- ---
    TADEAS: virtual water / embedded water

    Virtual Water - the Water, Food, and Trade NexusUseful Concept or Misleading Metaphor?
    https://www.soas.ac.uk/water/publications/papers/file38394.pdf
    TADEAS
    TADEAS --- ---
    geopolitika vody, civilizacni toky

    Water is a stream of geopolitical force through history | Aeon Essays
    https://aeon.co/essays/water-is-a-stream-of-geopolitical-force-through-history

    A great river encircles the world. It rises in the heartland of the United States and carries more water than the Mississippi and Yangtze rivers combined. One branch, its oldest, streams over the Atlantic, heading for Europe and the Middle East. Another crosses the Pacific, flowing towards China. Countless tributaries join along the way, draining the plains and forests of Latin America, Europe and Asia.

    You probably have never heard of such a river, even though almost all of us draw from it. You cannot fish in it, float on it, drink from it. If you were to look, you would not find it: it is invisible. Yet there is no doubt that it flows.

    The river starts anywhere water feeds agriculture. But from there, physical water vanishes, replaced by a flow of crops that carry only the memory of the water used to produce them. Crops then travel along the shipping lanes of the global trade system, eventually displacing the water that would have otherwise been used to grow them locally. Thus, water flows from source to destination ‘embedded’ in its products. It is a flow of ‘virtual water’, an idea first developed in the 1980s by the late geographer Tony Allan.

    This great virtual river helps explain how nations exercise power over each other. It is far from a coincidence that its dominant source today is the waters of the Mississippi. Its current path was established when Franklin Roosevelt’s US replaced Britain as the world’s hegemon. The US began feeding an imploding, war-torn Europe with crops nourished by the rich waters of Old Man River, and the rest is history.

    ...

    All through the 20th century, trading the products of a country’s water resources was an act of power. When the US became the granary of the world, flooding food eastward, it also provoked a countercurrent of hard currency streaming back to pay for it, setting the stage for the Bretton Woods settlement.

    Lenin and Stalin paid for Soviet industrialisation with cereal production of Ukrainian, Russian and Central Asian fields, irrigated by canals built by thousands of Gulag prisoners. In China, Mao may well have measured the targets of the Great Leap Forward in tons of steel, but planned to fund their pursuit by irrigating the plains of the Yangtze and Yellow rivers.

    Ibn Saud knew that oil might make him wealthy, but only water to irrigate Saudi Arabia would give him power, so the former paid for the latter. And the 1970s postcolonial competition for regional influence over water reached a peak when the pan-Arabism of Egypt’s president Gamal Abdel Nasser collided with Israel’s claims over the Jordan River, seeding conflicts that – from the Arab Spring to the Syrian crisis – have contributed to shaping the contemporary world.

    Yet the geopolitical value of water ended up hidden from view. A thick layer of 20th-century industrialisation concealed the force of water behind countless dams and vast embankments, replumbing the planet and fooling people into believing that modernity had emancipated their life from concerns about water.

    ...



    The drying of the Colorado River, the decimation of the forests of the Amazon and Congo basins, the flood-ridden plains of the Rhine and Yellow rivers, the disappearing wetlands of the Murray-Darling River are all evidence that a vast agricultural trade system continues to transform the face of the planet. And water continues to be its blueprint.

    You cannot see the great virtual river, even if it continues to grow. But, unseen, it still matters. It shapes the environment we all live in. It creates powerful dependencies between nations. Above all, it is an expression of power. You might not be able to see it, but its shadow stretches behind you in time.
    TADEAS
    TADEAS --- ---
    Shocking Portraits Of People Who Lost Their Homes To Climate Change | DeMilked
    https://www.demilked.com/drowning-world-portraits-climate-change-gideon-mendel/

    Since 2007, photographer Gideon Mendel has traveled to flooded areas around the globe to create portraits of survivors, submerged in flooded landscapes or in what may still remain of their homes.
    TADEAS
    TADEAS --- ---
    Imagine 2200: Climate Fiction for Future Ancestors | Fix
    https://grist.org/fix/series/imagine-2200-climate-fiction/

    The Fix Solutions Lab, a project of Grist Magazine, combines visionary storytelling with network-building and events. In 2021, Fix gathered 28 climate and justice leaders to explore visions of a clean, just future, giving land back, dissolving borders and prisons, and building economies based on ecological care. Fix’s climate-fiction contest, Imagine 2200: Climate Fiction for Future Ancestors, received 1,100 submissions last year.
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