• úvod
  • témata
  • události
  • tržiště
  • diskuze
  • nástěnka
  • přihlásit
    registrace
    ztracené heslo?
    TUHOKlimaticka zmena / Thank you so much for ruining my day
    TADEAS
    TADEAS --- ---
    Johan Rockström: Is it time to consider climate-altering approaches in a planetary emergency?
    http://www.youtube.com/watch?v=CbWvcNooKos
    TADEAS
    TADEAS --- ---
    Keynote: Johan Rockström - UNEP FI Global Roundtable 2020
    http://www.youtube.com/watch?v=fED9sodsNGY
    PER2
    PER2 --- ---
    PER2:
    “Climate change, droughts, population growth, and pollution are likely to make water scarcity issues and pricing a hot topic for years to come,” RBC Capital Markets managing director and analyst Deane Dray told Bloomberg. “We are definitely going to watch how this new water futures contract develops.”

    Proponents argue the new market will clear up some of the uncertainty around water prices for farmers and municipalities, helping them budget for the resource. But some experts say treating water as a tradable commodity puts a basic human right into the hands of financial institutions and investors, a dangerous arrangement as climate change alters precipitation patterns and increases water scarcity.

    “What this represents is a cynical attempt at setting up what’s almost like a betting casino so some people can make money from others suffering,” Basav Sen, climate justice project director at the Institute for Policy Studies, told Earther. “My first reaction when I saw this was horror, but we’ve also seen this coming for quite some time.”
    PER2
    PER2 --- ---
    jste ready na madmax? :)
    "Wall Street Begins Trading Water Futures as a Commodity"
    GOJATLA
    GOJATLA --- ---
    Dave Borlace je sice asi beznadějný optimista, ale stejně se na to rád dívám, jsou to takové pohádky pro dospělé. Tohle tu nebylo?
    Regenerative Agriculture - The fastest way to climate safety?
    https://www.youtube.com/watch?v=yZopUOb_7wA
    GOJATLA
    GOJATLA --- ---
    SHEFIK: Ba ne, je to opačně :-) Panika není cílem XR. Panika je přirozená reakce, když si uvědomiš, kam směřujeme. XR je způsob, jak se s tím vyrovnat. A panika tě časem přejde, i silnici můžeš blokovat v klidu a s pocitem, ze děláš správnou věc. Kdo se zajímá o klima a je stále v klidu, tak musí být cynik, Buddha a nebo ještě nepochopil, co nás čeká. K řešení se posuneme až ve chvíli, kdy společnost přestane strkat hlavu do písku. O to usiluje XR. Že to je nevděčný úkol je jasné, poslové špatných zpráv nikdy nebyli populární. XR naštěstí nepotřebuje být populární, lepší nenávistná reakce než žádná. Rozumná reakce je: XR to možná přehání, ale pojďme to řešit, je to největší problém, před jakým kdy lidstvo stálo. Dětinská reakce je: Nebudu to řešit, nechci dát XR za pravdu. (Imho žádná škoda, neřešil bys to stejně).
    SHEFIK
    SHEFIK --- ---
    RADIQAL: jo, taky mi prijde, ze ukolem XR je eskalace konfliktu a paniky:) do jisty miry je to asi kvuli klimatu opravneny, ale cilem by melo bejt stale docilit konstruktivni diskuzi, protoze panika a zakopy nas k reseni neposunou

    nicmene klid je vsude, kde si ho udelas. pokud se nedari, doporucuju treba Eduarda Tomase
    SHEFIK
    SHEFIK --- ---
    https://www.nature.com/articles/d41586-020-03621-6

    This shows the Biden team is really going to follow through on the bold climate commitments they put forward,” says Leah Stokes, a climate-policy researcher at the University of California, Santa Barbara. It’s a massive political shift, she says, “and it puts the country on track to make climate change the center of our economic policy.”

    Regan spent more than nine years working in the EPA’s air quality programme under former presidents Bill Clinton and George W. Bush, and another eight years working at the Environmental Defense Fund, an environmental advocacy group based in New York. For the past four, he has led North Carolina’s Department of Environmental Quality, where he earned the support of many environmentalists by standing up to chemical and energy companies.
    SHEFIK
    SHEFIK --- ---
    aby to nebylo tak jednoduchy

    Land ecosystems are becoming less efficient at absorbing CO2 -- ScienceDaily
    https://www.sciencedaily.com/releases/2020/12/201218131902.htm
    RADIQAL
    RADIQAL --- ---
    SHEFIK: Vidite, a ja mel za to ze ukolem XR je "It's Time to Panic". Jako nic proti klidu, ale ten je jen v oku hurikanu. Když by v něm chtěl jeden vydržet, musel by se naučit tančit na špičce jehly...
    RADIQAL
    RADIQAL --- ---
    SHEFIK: Na to bysme si mohli vsadit :D
    Who's in?
    RADIQAL
    RADIQAL --- ---
    TADEAS: V Hostětíně budu mít asi dobrou představu…
    SHEFIK
    SHEFIK --- ---
    TADEAS: nevim jestli na desetinu, ale na petinu uz projekce na celkovy naklady jsou :)

    A combination of cost reductions in electricity and electrolyzers, combined with increased efficiency and operating lifetime, can deliver 80% reduction in green hydrogen cost. 

    IRENA sees renewable hydrogen at least cost-possible within decade - Green Car Congress
    https://www.greencarcongress.com/2020/12/20201218-irena.html
    TADEAS
    TADEAS --- ---
    What is the difference between Syntropic Agroforestry and Permaculture? — Syntropia
    https://www.syntropia.com.au/blog/difference-between-syntropic-agroforestry-and-permaculture
    TADEAS
    TADEAS --- ---
    SHEFIK: v nemecku se to da koupit. ten vodik celkem umoznuje v techle sirkach rozlozit pouzitelnost solaru do celyho roku, vyrovnat tu sezonnost. 1 clovek = 1 MWh domaci spotreby = 1 kWp solaru * 1000 hodin osvitu (vsechno zhruba). takze staci to v principu rozlozit do celyho roku. brzdi to asi hlavne cena tech elektrolyzeru, podle me musi jit tak na desetinu :) to misto na vyskladani setu tech nadrzi neni asi v zasade problem pro ty objekty ke kterejm se to zamysli (individulni domy).

    Product | Drupal
    https://www.homepowersolutions.de/en/product

    20201218-211842


    pokud k tomu pridame elektromobilitu, tak samozrejme ten narok celkem dost vzroste.
    PER2
    PER2 --- ---
    SHEFIK:
    The proposed system could only work by employing a battery with a minimum storage capacity of 20 kWh and a fuel cell and electrolyzer with an installed capacity of at least 4 to 7 kW. “Hydrogen storage capacity of about 170 kg to 190 kg is needed to maintain system operation during the winter months, thus, unless additional compressors are used, a relatively large area in a residential home would be required for physical storage of hydrogen,” the scientists affirmed.

    idealne do sklepa kazdyho baraku, hasici approves :)
    VOYTEX
    VOYTEX --- ---
    SHEFIK: uh oh
    z PDF: "When compressed to 50 bar (...) the storage capacity for the 183 kg of hydrogen would need to be 45.8 m3"
    SHEFIK
    SHEFIK --- ---
    TADEAS: neco takovyho?

    Whirlpool Turbines Can Provide 24/7 Renewable Energy For Dozens Of Homes
    http://www.youtube.com/watch?v=buF8ASmwXt4
    TADEAS
    TADEAS --- ---
    SHEFIK: vtipny je ze i na urovni domu/domacnosti ta energeticka problematika kopiruje tu sirsi. v zasade z tohohle pohledu je problem akorat ta zima, v malym meritku je k dispozici plyn, bioplyn, vodik, drevo... a uspory, tepelny cerpadla a vhodna kombinace technologii. vitr je v podstate relevantni akorat grid-scale. jeste by davalo smysl nejaky micro-hydro, ale to jsou hodne specificky podminky.
    Kliknutím sem můžete změnit nastavení reklam