• úvod
  • témata
  • události
  • tržiště
  • diskuze
  • nástěnka
    • přihlásit
    registrace
    ztracené heslo?
    TUHOKlimaticka zmena / If the fracturing of our once stable climate doesn’t terrify you, then you don’t fully understand it
    XCHAOS
    XCHAOS --- ---
    +5
    YMLADRIS: ano, já se o solarpunkové vize snažil předtím, než tohle heslo existovalo ve wiki :-)
    [ XCHAOS @ Solární letadla a vzducholodi (pilotovaná/bezpilotní+stratosférické/elektrické létání+"létající auta"/VTOL) ]

    Ale 2200 je naprosto šílený časový horizont, při dnešním exponenciálním tempu růstu v řadě oborů. Přiznám se, že mi ta sci-fi imaginace poněkud schází, v zásadě lze kvalifikovat dva druhy vizí: blízkou budoucnost, mírnou extrapolaci současnosti, a tu si lze představit relativně ne-post-apokalypticky. Vzdálená budoucnost je vždycky složitá, buď je to v nějaké formě fantasticko-mystický úlet jako Duna apod. nebo ve formě hardcore sci-fi je to často poněkud šílené. A obecně řada těch predikcí je prostě jen směšná...

    Z hlediska hard-scifi, ve chvíli, kdy oteplování překročí příjemnou mez, se přikročí k hard-industriálním řešením, protože prostě lidská povaha je taková. Nabarvíme střechy, ale třeba i černé asfaltové silnice nabílo, případně střechy dokonce uděláme lesklé. Vysušené oblasti dostanou industriálně odsolenou mořskou vodu ve stylu blízkého východu. Nekontroverzní budou tradiční metody, jako třeba zalesňování, ale samozřejmě se postaví spousta přehrad, protože voda je prostě voda, když je na očích a dlouhodobé důsledky a náklady samozřejmě není populární řešit. Když můžou dnes v létě reflexními plachtami přikrývat alpské ledovce, tak to někoho určitě napadne i u těch Grónských ledovců, když začnou tát.... otatně, reflexní folie umíme velmi tenké už dnes...

    To vše nás ale čeká tak kolem roku 2050, ne 2200. V té době řada toho, co se dnes u nás pořád vnímá jako strašně progresivní, bude naprostý mainstream.. jako zeleň ve městě, zelené střechy, apod. Ale nebude to stačit, protože miliardy lidí v rozvojových zemích se budou pořád snažit kopírovat obsolete civlilizační vzorce, tak jsme je pořád kopírujeme i my.

    Já jsem samozřejmě solární lítání původně vymyslel, když jsem vymýšlel rekvizity pro nějaké sci-fi z relativně blízké budoucnosti, které by nemuselo být úplně dystopické, pokud jde o podobu života přímo tady dole na Zemi. Ve stejném kontextu jsem uvažoval o solárních kolech. Ale vzešlo to z přemýšlení o energetické autonomii, nejen o globálním oteplování. Znovu připomínám, že začátkem 90tých let připadalo většině lidí jako daleko větší hrozba, že buď ropa dojde, nebo "Rusko zavře kohoutky", šance nakoupit si na světovém volném trhu nebyly velké a globální oteplování byla tehdy pořád jen hypotéza na hranici měřitelnosti či statistické významnosti, a profesor Klaus poté začal říkat, že je to výmysl, takže....
    XCHAOS
    XCHAOS --- ---
    Česko čeká nový solární boom. I když mu politici nepřejí - Seznam Zprávy
    https://www.seznamzpravy.cz/clanek/cesko-ceka-novy-solarni-boom-i-kdyz-mu-politici-nepreji-137720
    YMLADRIS
    YMLADRIS --- ---
    1 odpověď+4
    mohl by se uplatnit XCHAOS

    Fiction contest calls for unheard-of climate solutions
    A new climate-fiction short-story contest calls for entries that imagine climate fixes beyond the imagination of scientists and engineers. Creative writers can submit stories envisioning the next 180 years of climate progress, preferably with narratives that allow hope for a better future rather than apocalyptic visions — something we could probably all do with right now.

    Grist | 5 min read https://grist.org/fix/climate-fiction-writing-contest-imagine-2200-prizes/
    PER2
    PER2 --- ---
    +7
    Biden to cancel $9bn Keystone XL pipeline's permit, says source. Rescinding permit is on list of executive actions thought to be scheduled for first day in office

    Biden Climate Team Says It Underestimated Trump's Damage. Agency reviews have found greater budget cuts, staff losses and elimination of climate programs than initially thought. The Biden team says the incoming president’s climate plans remain intact.

    Biden plans to fight climate change in a way no U.S. president has done before. By mobilizing his entire administration to take on the challenge from every angle in a strategic, integrated way. Slowing climate change will require a comprehensive and coordinated “all hands on deck” approach.


    celkem prijemna zmena proti trumpovi, tak snad prezije stredecni inauguraci
    TADEAS
    TADEAS --- ---
    +1
    Bundestag bestätigt Antrag zur Förderung der Agroforstwirtschaft - Agroforst
    https://agroforst-info.de/bundestag-bestaetigt-antrag-zur-foerderung-der-agroforstwirtschaft/

    Thanks to the great work of the German Association for Agroforestry, the Bundestag (Germany's Parliament) last week approved the government coalition's proposal to promote the agroforestry sector - by an overwhelming majority!

    This calls on the government to shape the legal measures under the new CAP (Europe's Common Agricultural Policy) in such a way that a wide variety of agroforestry systems can be established. This is not only necessary from an ecological point of view, it is also needed so that farms can design agroforestry areas flexibly, and adapt them to both their location and their business objectives. It will be crucial to ensure that are no restrictions are placed on either the range of tree species or the number of trees within an agroforestry plot.

    Furthermore, a general right of use and conversion of the woody biomass will be essential for agroforestry's spread.

    Germany is a pioneer in having taken such a broad legislative decision in favour of agroforestry, and we hope it will be an example to other European member states who are currently designing their so-called agricultural "strategic plans", which define how they plan to spend European CAP subsidies over the next years.
    TUHO
    TUHO --- ---
    +3
    Gates společně se svou ženou Melindou postupně zakoupili 242 tisíc akrů, tedy asi 98 tisíc hektarů, zemědělské půdy ve Spojených státech, přičemž největší podíly byly podle magazínu The Land Report v Louisianě, Arkansasu a Nebrasce.
    Kromě toho zakoupili 25 750 akrů pozemků západně od města Phoenix v Arizoně, kde má být vybudováno nové předměstí. Podle The Land Report jsou pozemky vlastněné skupinou Cascade Investments, což je Gatesův soukromý investiční fond.
    Přestože není úplně jasné, proč Gates do pozemků investoval, podle serveru IOL tak mohl učinit kvůli očekávaní klimatické změny. V minulém roce totiž nadace Gatesových založila novou neziskovou organizaci Gates Ag One zaměřenou na pomoc malým zemědělcům v rozvojových zemích, která by farmářům měla pomáhat právě s řešením dopadů klimatické změny.


    Gates koupil obrovské zemědělské pozemky. Experti řeší, co tam vznikne - iDNES.cz
    https://www.idnes.cz/...anicni/bill-gates-zemedelska-puda-ekologie.A210118_135407_eko-zahranicni_kou
    TUHO
    TUHO --- ---
    Guest post: How to ‘fairly’ share emissions from goods traded around the world | Carbon Brief
    https://www.carbonbrief.org/...post-how-to-fairly-share-emissions-from-goods-traded-around-the-world
    TADEAS
    TADEAS --- ---
    1 odpověď+1
    TADEAS:

    Paul Maidowski
    https://twitter.com/_ppmv/status/1349679685957988353?s=19

    Mann is consistently ignoring social science & social movement literature, using his (by climate standards large) platform to impose simplistic & US-centric views on activists worldwide, drowning out the urgently necessary warning voices. Not remotely helpful.

    ...

    Why politically naïve: the opportunity costs of fixating on shallow surface level questions (pricing) are high. Obviously we need changes in prices, no one’s disputing that, but via entirely different levers & the type of social movement building that Mann’s actively undermining

    ...

    we all like *the idea* of carbon pricing—on paper a smooth silver bullet. Take an insanely messy complex real world problem & smoothly internalize externalities. The problem is, the economics are false @ProfSteveKeen ( https://www.tandfonline.com/doi/abs/10.1080/14747731.2020.1807856?journalCode=rglo20 ) & of course it will never work at scale

    ...

    Great overview, shared elsewhere here already, why we need to do the hard work of politics rather than continue to create plausible deniability with carbon pricing type debates that will always fall short, because pricing’s linear, never a systemic change:

    The Trouble with Carbon Pricing | Boston Review
    http://bostonreview.net/...e-nature-politics/matto-mildenberger-leah-c-stokes-trouble-carbon-pricing
    TADEAS
    TADEAS --- ---
    +1
    Living in Denial | The MIT Press
    https://mitpress.mit.edu/books/living-denial

    If our failure to act on predictions is itself predictable, what can we do about it? Figuring out why people cling to the status quo, even while alarm bells are going off, then becomes the real priority.

    ...

    Global warming is the most significant environmental issue of our time, yet public response in Western nations has been meager. Why have so few taken any action? In Living in Denial, sociologist Kari Norgaard searches for answers to this question, drawing on interviews and ethnographic data from her study of "Bygdaby," the fictional name of an actual rural community in western Norway, during the unusually warm winter of 2000-2001.

    In 2000-2001 the first snowfall came to Bygdaby two months later than usual; ice fishing was impossible; and the ski industry had to invest substantially in artificial snow-making. Stories in local and national newspapers linked the warm winter explicitly to global warming. Yet residents did not write letters to the editor, pressure politicians, or cut down on use of fossil fuels. Norgaard attributes this lack of response to the phenomenon of socially organized denial, by which information about climate science is known in the abstract but disconnected from political, social, and private life, and sees this as emblematic of how citizens of industrialized countries are responding to global warming.
    TUHO
    TUHO --- ---
    +2
    TADEAS
    TADEAS --- ---
    +1
    State of the climate: 2020 ties as warmest year on record | Carbon Brief
    https://www.carbonbrief.org/state-of-the-climate-2020-ties-as-warmest-year-on-record

    IMG-20210117-011203
    TADEAS
    TADEAS --- ---
    meta-metabolome ecology



    Ecological Modeling Applied to Metabolomics Opens New Area of Scientific Inquiry | PNNL
    https://www.pnnl.gov/...s/ecological-modeling-applied-metabolomics-opens-new-area-scientific-inquiry

    An ecological meta-community contains multiple communities of biological species distributed through space. Processes governing meta-community dynamics are often studied through an approach called null modeling. Now, researchers, led by scientists at the U.S. Department of Energy’s Pacific Northwest National Laboratory (PNNL), have shown that this approach can be extended to organic molecules fundamental to biogeochemical cycling across all ecosystems. They developed this new conceptual paradigm and created the tools to turn the concepts into a quantitative framework. To demonstrate the approach, the team further applied the methods to organic metabolites collected along a well-studied section of the Columbia River. The outcome is the foundation for a new line of scientific inquiry they call “meta-metabolome ecology.”

    ...

    This approach enables researchers to track processes governing organic metabolite profiles through space and time in natural ecosystems. This is key to develop predictive, mechanistic models that link molecular properties to emergent ecosystem function from local to global scales, such as reactive transport and Earth system models. River corridors are an example of an ecosystem that can benefit from this type of analysis. They are major biogeochemical engines of the Earth system, yet challenges connecting processes and features across scales still exist. Furthermore, the science opened by this study will allow microbial taxa to be more directly coupled to the organic molecules involved with metabolic reactions that underlie biogeochemical function

    ...

    To better understand processes that constrain or promote variation in metabolomes, researchers integrated metabolite data with tools and concepts from community ecology. They used metabolite data collected from ultrahigh resolution mass spectrometric analysis of filtered river water and subsurface pore water collected from a well-studied stretch of the Columbia River. These data were generated at the Environmental Molecular Sciences Laboratory (EMSL), a DOE Office of Science user facility at PNNL.

    With these data, the researchers developed several metabolite dendrograms to group molecules based on common traits, such as elemental composition, structural features, and biochemical transformations. Next, they performed ecological null modeling, a common approach used in meta-community ecology but never before applied to organic metabolite assemblages. The null models quantified processes that governed the assembly of molecules into metabolomes.

    The researchers found metabolites that were potentially biochemically active were more deterministically assembled than less active metabolites. Organic metabolites that are biochemically active and deterministically organized are most important to represent in mechanistic models.
    XCHAOS
    XCHAOS --- ---
    Xbox's 'Instant On' Feature Could Consume 4 Billion kWh By 2025 - Slashdot
    https://games.slashdot.org/...5/2135240/xboxs-instant-on-feature-could-consume-4-billion-kwh-by-2025
    SHEFIK
    SHEFIK --- ---
    God Bleeds - Oil Graduates Aren't Finding Jobs
    https://cleantechnica.com/2021/01/15/god-bleeds-oil-graduates-arent-finding-jobs/
    SHEFIK
    SHEFIK --- ---
    Cutting Emissions To Zero CAN Halt Climate Change In Our Lifetimes
    https://cleantechnica.com/.../15/cutting-emissions-to-zero-can-halt-climate-change-in-our-lifetimes/

    “There’s no point in stopping climate change,” an acquaintance once told me. “Even if we changed everything to electric and solar panels, your scientists are saying it wouldn’t even help our grandchildren’s grandchildren much.”

    That view may sound defeatist, but until recently, that was the prevailing scientific view. My acquaintance was actually right. “Our” scientists were saying something like that. On the NASA climate change frequently asked questions pages, under “Is it too late to prevent climate change?” it says, “Even if we stopped emitting greenhouse gases today, global warming would continue to happen for at least several more decades, if not centuries. That’s because it takes a while for the planet (for example, the oceans) to respond, and because carbon dioxide – the predominant heat-trapping gas – lingers in the atmosphere for hundreds of years.”

    That data led to a lot of hopelessness, and even served as an excuse for people who don’t want to sacrifice anything to mitigate the effects of climate change. Fortunately, some climate scientists are finding that their past assumptions on this question were wrong.

    Buried under doomsday predictions for what could happen during a second Trump term was newer information about this from Michael Mann, a distinguished climate scientist. It turns out that if we cut to zero emissions, the warming would continue, but only for a few years.

    nebudu kopirovat cely :)
    TADEAS
    TADEAS --- ---
    Joe Biden's climate pledges: Are they realistic?
    https://dw.com/en/joe-bidens-climate-pledges-are-they-realistic/a-56173821

    What can Biden do domestically during his term?
    With 2050 a long way off, all eyes are on what the president-elect does at home in the next few years.

    Key among his domestic climate pledges is his plan to make the US power sector climate neutral by 2035. Bertram said "this is something where there could be visible results within three to four years [in Biden's term]."

    In addition to the power sector, Keohane says the EDF has identified two other key short-term goals for Biden's domestic policy: Transportation, particularly with legislation around tailpipe standards for cars and trucks, and methane reduction in industry.

    "The federal government needs to go all out on existing authorities like the Clean Air Act," Keohane said. "Methane is the main cause of near-term warming, and reducing that is something Biden can do from day one."

    In the US, the oil and gas industries were responsible for 31% of methane production in the US between 1990 and 2017 according to the Environmental Protection Agency , second only to agriculture. Investing in clean energy sources and creating a transition away from these industries will be important in reducing methane emissions in the next few years.
    TADEAS
    TADEAS --- ---
    TADEAS:

    Top scientists warn of 'ghastly future of mass extinction' and climate disruption | Environment | The Guardian
    https://amp.theguardian.com/...-warn-of-ghastly-future-of-mass-extinction-and-climate-disruption-aoe

    “The scale of the threats to the biosphere and all its lifeforms – including humanity – is in fact so great that it is difficult to grasp for even well-informed experts,” they write in a report in Frontiers in Conservation Science which references more than 150 studies detailing the world’s major environmental challenges.

    The delay between destruction of the natural world and the impacts of these actions means people do not recognise how vast the problem is, the paper argues. “[The] mainstream is having difficulty grasping the magnitude of this loss, despite the steady erosion of the fabric of human civilisation.”

    The report warns that climate-induced mass migrations, more pandemics and conflicts over resources will be inevitable unless urgent action is taken.

    “Ours is not a call to surrender – we aim to provide leaders with a realistic ‘cold shower’ of the state of the planet that is essential for planning to avoid a ghastly future,” it adds.
    TADEAS
    TADEAS --- ---
    TADEAS:

    Simultaneous with population growth, humanity's consumption as a fraction of Earth's regenerative capacity has grown from ~ 73% in 1960 to 170% in 2016 (Lin et al., 2018), with substantially greater per-person consumption in countries with highest income. With COVID-19, this overshoot dropped to 56% above Earth's regenerative capacity, which means that between January and August 2020, humanity consumed as much as Earth can renew in the entire year (overshootday.org). While inequality among people and countries remains staggering, the global middle class has grown rapidly and exceeded half the human population by 2018 (Kharas and Hamel, 2018). Over 70% of all people currently live in countries that run a biocapacity deficit while also having less than world-average income, excluding them from compensating their biocapacity deficit through purchases (Wackernagel et al., 2019) and eroding future resilience via reduced food security (Ehrlich and Harte, 2015b). The consumption rates of high-income countries continue to be substantially higher than low-income countries, with many of the latter even experiencing declines in per-capita footprint (Dasgupta and Ehrlich, 2013; Wackernagel et al., 2019).
    TADEAS
    TADEAS --- ---
    2 odpovědi+2
    Frontiers | Underestimating the Challenges of Avoiding a Ghastly Future | Conservation Science
    https://www.frontiersin.org/articles/10.3389/fcosc.2020.615419/full

    We report three major and confronting environmental issues that have received little attention and require urgent action.

    First, we review the evidence that future environmental conditions will be far more dangerous than currently believed. The scale of the threats to the biosphere and all its lifeforms—including humanity—is in fact so great that it is difficult to grasp for even well-informed experts.

    Second, we ask what political or economic system, or leadership, is prepared to handle the predicted disasters, or even capable of such action.

    Third, this dire situation places an extraordinary responsibility on scientists to speak out candidly and accurately when engaging with government, business, and the public.

    We especially draw attention to the lack of appreciation of the enormous challenges to creating a sustainable future. The added stresses to human health, wealth, and well-being will perversely diminish our political capacity to mitigate the erosion of ecosystem services on which society depends.

    The science underlying these issues is strong, but awareness is weak. Without fully appreciating and broadcasting the scale of the problems and the enormity of the solutions required, society will fail to achieve even modest sustainability goals.
    YMLADRIS
    YMLADRIS --- ---
    +1
    YMLADRIS: https://www.carbonbrief.org/analysis-the-climate-papers-most-featured-in-the-media-in-2020

    ze zahadnych duvodu obrazek byl jen pozadi
    Kliknutím sem můžete změnit nastavení reklam