• úvod
  • témata
  • události
  • tržiště
  • diskuze
  • nástěnka
  • přihlásit
    registrace
    ztracené heslo?
    TUHOKlimaticka zmena / Thank you so much for ruining my day
    GOJATLA
    GOJATLA --- ---
    BRAMBOROVY_KRAL: Myslím, že to mělo být Global average, ne surface. Tady je pěkné srovnání, jak si vedou klimatické modely:
    Analysis: How well have climate models projected global warming? | Carbon Brief
    https://www.carbonbrief.org/analysis-how-well-have-climate-models-projected-global-warming



    BRAMBOROVY_KRAL
    BRAMBOROVY_KRAL --- ---
    YMLADRIS: "They concluded, in a report released in August 1990, that the menace was real and that coal, gas and oil would be the principal causes of global heating. Unless controls were imposed on their consumption, temperature rises of 0.3C a decade would be occurring in the 21st century, bringing havoc in their wake." Od roku 2000 to podle grafu vypada na ~0.25C per decade. Takze docela dobry odhad. (alespon pokud se bavime o Global surface temperature, nevim presne na ktery typ mereni se ten jejich odhad vztahoval)
    YMLADRIS
    YMLADRIS --- ---
    tento týden před 30 lety vyšla první zpráva ipcc. předpovídali oteplování o 0.3 za dekádu, to se nepotvrdilo - bylo to míň. od té doby vydávají upřesnění co pár let

    The Observer view on the climate catastrophe facing Earth | Climate change | The Guardian
    https://www.theguardian.com/...2020/aug/23/the-observer-view-on-the-climate-catastrophe-facing-earth
    KEB
    KEB --- ---
    TADEAS: je tam paywall, tak se chci jen zeptat jestli zmínil ty gigatuny spáleného dřeva v draxu?
    TUHO
    TUHO --- ---
    The City of Sydney — the central business district of Sydney and its surrounding inner city suburbs — will now be powered using 100% renewable energy, a switch forecast to save half a million dollars and 200,000 tonnes of CO2 emissions from entering the atmosphere over the next 10 years.
    Two solar farms and one wind farm located across regional New South Wales will exclusively power all City-owned properties, including 115 buildings, 75 parks, 23,000 streetlights, various sport facilities and depots. The historic deal marks the most substantial green energy agreement by any council across Australia.

    The City of Sydney Now Runs on 100% Renewable Energy
    https://www.globalcitizen.org/en/content/the-city-of-sydney-100-percent-renewable/
    YMLADRIS
    YMLADRIS --- ---
    Největší část uhlíkové stopy obyvatel Prahy tvoří spotřeba masa, ukázal výzkum
    https://www.czechsight.cz/...i-cast-uhlikove-stopy-obyvatel-prahy-tvori-spotreba-masa-ukazal-vyzkum/

    jakub udělal clanek podle pruzkumu Arniky, kterej teda zrejme vychazi uplne jinak, ze co razim ja podle nazoru lidi z Veronicy ("pokud malo jezdis autem, 70 procent tve uhlikove stopy je vytapeni"), ale podrobne jsem nestudovala
    TADEAS
    TADEAS --- ---
    Odejít od uhlí jde, v Británii ho nespalujeme už čtyři a půl měsíce, říká diplomat | Hospodářské noviny (iHNed.cz)
    https://archiv.ihned.cz/c1-66805980-odejit-od-uhli-jde-v-britanii-ho-nespalujeme-uz-4-5-mesice
    TUHO
    TUHO --- ---
    TUHO
    TUHO --- ---
    Tesla CEO Elon Musk has updated the timeline on which he sees batteries enabling electric aircraft coming to maket. He now sees it happening in "3 to 4 years."
    Several years ago, Musk, the CEO of both Tesla and SpaceX, said that he had a design for electric vertical take-off and landing (VTOL) aircraft – though he never elaborated on plans to bring the aircraft to production.
    In order for his design to work, Musk said that the energy density of batteries needs to improve.
    At the time, he mentioned a threshold of around 400 Wh/kg while Tesla’s batteries were achieving around 260 Wh/kg.
    Now a year later, Tesla’s CEO is slightly accelerating the timeframe to “probably 3 to 4 years” away (via Twitter):
    “400 Wh/kg *with* high cycle life, produced in volume (not just a lab) is not far. Probably 3 to 4 years.”

    Tesla's Elon Musk says that batteries enabling electric aircraft are coming in '3 to 4 years' - Electrek
    https://electrek.co/2020/08/25/tesla-elon-musk-batteries-enabling-electric-aircraft-coming/
    TUHO
    TUHO --- ---
    Tady celej dokument o Roger Hallamovi, jedny z hlavnich postav Extinction Rebellion. Zdarma ke shlednuti do 27. srpna

    THE TROUBLEMAKER (XR SCREENING)
    https://vimeo.com/443364512
    TUHO
    TUHO --- ---
    Agroforestry is essentially a forest-mimicking agriculture that involves growing trees, shrubs and vegetables in tight assemblages. It is an ancient technology created by indigenous peoples and popularized in recent decades by newer landowners. Although it’s difficult to pin down how much of the world’s agricultural land contains tree cover, figures range from 100 million hectares to as much as 1 billion hectares, which lock up an estimated .75 gigatons of carbon per year. By comparison, there were 32.5 gigatons of global carbon emissions in 2017.

    In terms of cost, agroforestry is likely much cheaper than Carbon Engineering’s invention, not to mention that it will likely take much more carbon-emitting energy to operate their machines on the global scale that they envision. Project Drawdown, a carbon solution tracking initiative, estimates a cost of $26.8 billion to implement agroforestry on an additional 19 million hectares globally — sequestering 9.3 billion gigatons of carbon and providing an estimated profit of $710 billion for farmers and investors by 2050. Institutions with “climate-smart” agriculture support programs like the World Bank and the UN Food and Agricultural Organization could supply some of the needed funding and channel it through the training and extension programs of nonprofits like the World Agroforestry Centre. Private investors seeking carbon credits can likely provide significant capital as well.

    A low-tech method for combating climate change - NOEMA
    https://www.noemamag.com/a-low-tech-method-for-combating-climate-change/
    TUHO
    TUHO --- ---
    The German auto market is nearly back to normal, down just 5% in July, but the local plugin electric vehicle market is far beyond that — it’s red hot right now. Plugin vehicles (fully electric vehicles as well as plugin hybrids) scored an amazing 36,000 registrations in July, which not only a new record, but is 85% above the last record, made last March.

    11% EV Market Share In Germany! Let The Disruption Begin!
    https://cleantechnica.com/2020/08/23/11-ev-market-share-in-germany-let-the-disruption-begin/

    TUHO
    TUHO --- ---
    world has successively blown past various emissions reductions targets over the past generation, climate and energy modelers have had to rely more and more on 'negative emissions' to achieve their goals (in models). While negative emissions are not a substitute for near-term mitigation, they offer some flexibility if emissions overshoot targets. For a time, the main negative-emissions technology used in climate models was bioenergy with carbon capture and storage, or BECCS. But real-world deployment of BECCS would require vast amounts of land — an area up to to five times the size of India — which would compete with other land uses and threaten ecosystems. Natural carbon sequestration, including large-scale reforestation, is a more promising option, but it would only replace the carbon released when those forests were first cut down — it won't be enough to substantially reduce future warming.

    Building Bridges to Negative Emissions | The Breakthrough Institute
    https://thebreakthrough.org/issues/energy/negative-emissions
    TUHO
    TUHO --- ---
    TUHO
    TUHO --- ---
    Halliburton, the world’s biggest fracking provider, expects the worst-ever slump in oil exploration to end soon. Almost three-fourths of the nation’s active oil rigs have been sidelined this year. “We do see some recovery in the back half” of this year, Halliburton Chief Executive Officer Jeff Miller said during a recent interview. “Fracking activity reached a bottom in the second quarter. I think we’ll see drilling activity reach a bottom in the third quarter and then some modest recovery.”

    https://www.resilience.org/stories/2020-08-24/the-energy-bulletin-weekly-august-24-2020
    GOJATLA
    GOJATLA --- ---
    In our collective, we have mapped four denials that severely restrict the capacity of those of us socialized within modernity-coloniality to sense, relate and imagine otherwise:

    the denial of systemic, historical and ongoing violence and of complicity in harm (the fact that our comforts, securities and enjoyments are subsidized by expropriation and exploitation somewhere else);

    the denial of the limits of the planet and of the unsustainability of modernity-coloniality (the fact that the finite earth-metabolism cannot sustain exponential growth, consumption, extraction, exploitation and expropriation indefinitely);

    the denial of entanglement (our insistence in seeing ourselves as separate from each other and the land, rather than “entangled” within a living wider metabolism that is bio-intelligent); and,

    the denial of the magnitude and the complexity of the problems we need to face together (the tendency to look for simplistic solutions that make us feel and look good and that may address symptoms, but not the root causes of our collective complex predicament).
    One final denial is denial of the ways that these four denials are all interconnected. It is common for critical educational initiatives to address one or maybe two of these denials at a time, but we have thus far not encountered any initiatives, especially in the context of low-intensity struggles, that seriously engage with all four

    Preparing for the end of the world as we know it | openDemocracy
    https://www.opendemocracy.net/en/oureconomy/preparing-end-world-we-know-it/
    KEB
    KEB --- ---
    LINKOS: u nás toho bio zase není nijak závratné množství. Větší množství typický králíkův hajzlik končí v bio popelnicí v drtivé většině. Sem tam ho hodíme na kompost na chatě. I ten se nestarám nijak. Sypu tam klasický zahradní binec. Akorát do něj vždycky hledím nalít pár kyblíků vody. Nesmrdí a dole je fakt substrát.

    Zizalovy kompostér z kyblíků má bratranec. U nich na firmě jsou plastové kyblíky odpad.
    TUHO
    TUHO --- ---
    Climate Dynamics Lecture 10 - The Thermohaline Circulation
    http://www.youtube.com/watch?v=EYLLGiKqWS4
    TUHO
    TUHO --- ---
    Climate Dynamics Lecture 12 - Paleoclimate
    http://www.youtube.com/watch?v=J-QbihCEuUY
    TUHO
    TUHO --- ---
    During the last glacial period from 120,000 to 11,000 years ago, there were over 20 abrupt periods of rapid warming (D-O Oscillations) exceeding 1 degree C per decade warming recorded in the North Greenland Ice Project (NGRIP) cores. I continue to chat about the latest science comparing both the rates of change of warming as well as the spatial distribution of the warming between these D-O events and present day (contemporary) Arctic warming. In the paleoclimate D-O warming events, large Greenland ice sheet melting was preceded by extensive loss of Arctic sea ice; a pattern that we are expecting to experience again.

    Abrupt Arctic Climate Change: Comparison of Today with Paleoclimate: Change Rates and Distribution
    https://www.youtube.com/watch?v=GmGarSbnHCk
    Kliknutím sem můžete změnit nastavení reklam