• úvod
  • témata
  • události
  • tržiště
  • diskuze
  • nástěnka
  • přihlásit
    registrace
    ztracené heslo?
    TUHOKlimaticka zmena / Thank you so much for ruining my day
    VOYTEX
    VOYTEX --- ---
    TUHO: technicka. na obrazku je trifazovej kabel, nikoli DC, ty maji pochopitelne jedinou zilu. a jelikoz pisou, ze povede "hydropower", tak by museli mit za turbinama usmernovace, ale pak by tahli ten jednozilovej, jako od PV. a navic to neni moc green, protoze prehrady zpusobujou hromadeni bahna->metanu, brani migraci, vsemozne skodi. ale samozrejme i 3-f kabel muze vest DC.
    TADEAS
    TADEAS --- ---
    randers, escimo

    2019 The first climate tipping point – Already in the past? - Jorgen Randers Ulrich Goluke
    https://eartharxiv.org/ptse2/

    Our climate model (ESCIMO) indicates that the world is already past i ts first climate tipping point. In ESCIMO, even if man - made GHG emissions are cut to zero in 2020, the global average surface temperature keeps rising for more than a thousand years . This is because self-sustained melting of the permafrost continues – even after man - made GHG emissions have been brought to zero and the man - made CO2 in the atmosphere has been absorbed by the oceans – because of high concentrations of water vapor in the warmer at mosphere . In our Base Case scenario, where man - made emissions come to zero in 2100, by the year 2500 warming reaches + 3 °C and the sea level + 3.6 meters relative to the situation in 1850. Luckily, self - sustained warming can be stopped through early, huge - scale , and long - lasting CCS ( carbon capture and storage ).

    ...

    The reason is the combined warming effect of the methane released by the melting permafrost, and the high concentration of water vapor residing in the atmosphere as a consequence of the high temperatures brought about by man - made GHG emissions prior to 2100. In sum, CH 4 and H 2 O takes over for CO 2 as the main driver of continued warming. Our experiment shows that self - sustained melting o f the permafrost is triggered at much lower temperatures than formerly assumed : at around + 1°C in Figure 1 Scenario 2 . Other ESCIMO r uns ( where emissions are cut contra - factually several decades before 2020 ) indicate that self - sustained melting is triggered at below +0.5°C . O ther experiments show that it is possible ( in ESCIMO ) to bring the temperatur e back down to preindustrial level s . But it requires dramatic extraordinary action: huge - scale and long - lasting CCS (carbon capture an d storage) and more radi cal direct capture of carbon.
    SHEFIK
    SHEFIK --- ---
    taky trochu spatnych zprav ode me, metan porad unika pozornosti

    Global methane emissions soar to record high -- ScienceDaily
    https://www.sciencedaily.com/releases/2020/07/200714182228.htm

    The pandemic has tugged carbon emissions down, temporarily. But levels of the powerful heat-trapping gas methane continue to climb, dragging the world further away from a path that skirts the worst effects of global warming.

    Global emissions of methane have reached the highest levels on record. Increases are being driven primarily by growth of emissions from coal mining, oil and natural gas production, cattle and sheep ranching, and landfills.

    ...

    In 2017, the last year when complete global methane data are available, Earth's atmosphere absorbed nearly 600 million tons of the colorless, odorless gas that is 28 times more powerful than carbon dioxide at trapping heat over a 100-year span. More than half of all methane emissions now come from human activities. Annual methane emissions are up 9 percent, or 50 million tons per year, from the early 2000s, when methane concentrations in the atmosphere were relatively stable.
    In terms of warming potential, adding this much extra methane to the atmosphere since 2000 is akin to putting 350 million more cars on the world's roads or doubling the total emissions of Germany or France. "We still haven't turned the corner on methane," said Jackson, a professor of Earth system science in Stanford's School of Earth, Energy & Environmental Sciences (Stanford Earth).
    TADEAS
    TADEAS --- ---
    Fertility rate: 'Jaw-dropping' global crash in children being born - BBC News
    https://www.bbc.com/news/health-53409521

    https://www.eurekalert.org/pub_releases/2020-07/tl-pss_1071320.php



    the researchers expect the number of people on the planet to peak at 9.7 billion around 2064, before falling down to 8.8 billion by the end of the century.

    "That's a pretty big thing; most of the world is transitioning into natural population decline," researcher Prof Christopher Murray told the BBC.



    2052: A Global Forecast for the Next Forty Years - Wikipedia
    https://en.wikipedia.org/wiki/2052:_A_Global_Forecast_for_the_Next_Forty_Years

    Randers' "most likely scenario" predicts a peak in the world population in the early 2040s at about 8.1 billion people, followed by decline.
    TUHO
    TUHO --- ---
    Vladimír Melicharekosystems eu
    Sucho je v loukách významným disturbančním činitelem
    S dalšími botaniky se shoduji, že louky letos nebývale rozkvetly. Možnou příčinou je sucho v předchozích letech, které udělalo na úkor trav a mechů prostor pro semenáčky zejména dvouděložných rostlin. Letošní deštivý květen a červen pak růst lučních R-stratégů vyloženě podpořili. Ale je to jen terénní pozorování, žádný výzkum. Na fotografii je rozkvetlá louka severně od Klínovce s abnormálním zastoupením zvonku okrouhlolistého (Campanula rotundifolia), početné jsou i druhy jako jestřábník oranžový (Hieracium aurantiacum), kopretina irkutská (Leucanthemum ircutsianum), třezalka skvrnitá (Hypericum maculatum) a řada dalších. Zajímalo by mě, zda v jiných regionech či v území o nižší nadmořské výšce to funguje podobně.

    TUHO
    TUHO --- ---
    Oil and gas companies in the United States are hurtling toward bankruptcy at a pace not seen in years, driven under by a global price war and a pandemic that has slashed demand. And in the wake of this economic carnage is a potential environmental disaster — unprofitable wells that will be abandoned or left untended, even as they continue leaking planet-warming pollutants, and a costly bill for taxpayers to clean it all up.

    Still, as these businesses collapse, millions of dollars have flowed to executive compensation.

    Whiting Petroleum, a major shale driller in North Dakota that sought bankruptcy protection in April, approved almost $15 million in cash bonuses for its top executives six days before its bankruptcy filing. Chesapeake Energy, a shale pioneer, declared bankruptcy last month, just weeks after it paid $25 million in bonuses to a group of executives. And Diamond Offshore Drilling secured a $9.7 million tax refund under the Covid-19 stimulus bill Congress passed in March, before filing to reorganize in bankruptcy court the next month. Then it won approval from a bankruptcy judge to pay its executives the same amount, as cash incentives.

    “It seems outrageous that these executives pay themselves before filing for bankruptcy,” said Kathy Hipple, an analyst at the Institute for Energy Economics and Financial Analysis and a finance professor at Bard College. “These are the same managers who ran these companies into bankruptcy to begin with,” she said.

    https://www.nytimes.com/2020/07/12/climate/oil-fracking-bankruptcy-methane-executive-pay.html
    TUHO
    TUHO --- ---
    dalsi zpravy o krachu frackovaciho byznysu

    Nearly 250 U.S. oil and gas companies are expected to file for bankruptcy by the end of next year — more than went under in the last five years combined — as demand craters due to the pandemic, a global price war, and falling renewable energy prices. These failing companies often neglect well maintenance and plugged well repairs to save money, causing tons of ultra-heat-trapping methane to continue gushing into the atmosphere. Shale wells typically cost $300,000 to close — far more than the estimates used by companies, regulators and financial analysts — and an analysis prepared for The New York Times found companies have failed to reserve sufficient funds, as required by law, to remediate their well sites, leaving taxpayers to foot the cleanup bill.

    250 failing fracking companies to file for bankruptcy by 2021 - Front Page Live
    https://www.frontpagelive.com/2020/07/14/fracking-companies-bankruptcy/
    TUHO
    TUHO --- ---
    SCHWEPZ
    SCHWEPZ --- ---

    Joe Biden unveils aggressive $2tn climate and jobs plan | Joe Biden | The Guardian
    https://www.theguardian.com/us-news/2020/jul/14/joe-biden-climate-jobs-plan
    TUHO
    TUHO --- ---
    The UK’s National Grid and Denmark’s Energinet has begun work on the world’s longest subsea power cable. The €2 billion Viking Link project, a 475-mile-long (765 km) cable, is being built in Lincolnshire. It will run between the UK and Denmark in order to share green energy between the two countries.

    The Guardian writes:
    By 2023, the high-voltage, direct-current link will transmit the equivalent of enough electricity to power 1.5 million British homes between Bicker Fen in Lincolnshire and the South Jutland region in Denmark.



    Work launches on world's longest subsea power cable - Electrek
    https://electrek.co/2020/07/14/worlds-longest-subsea-power-cable-viking-link-uk-denmark/
    KERRAY
    KERRAY --- ---
    Neutralizing misinformation through inoculation: Exposing misleading argumentation techniques reduces their influence
    https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0175799

    Neutralizing misinformation through inoculation: Exposing misleading argumentation techniques reduces their influence
    TUHO
    TUHO --- ---
    World Meteorological Organization
    1t8Sipefro hmnofsdooredu · Sdíleno s: Veřejný
    2020 is so far (Jan-June) the second warmest on record, only 0.05°C
    (0.09°F) behind the record high set in 2016, according to scientists at NOAA’s National Centers for Environmental Information.
    The year to date average global temperature was 1.07°C (1.93°F) above the 20th-century average.
    June tied with June 2015 as the third-highest June temperature in the 141-year record. Only June 2016 and June 2019 were hotter.
    Copernicus Climate Change Service (ECMWF) said June was second warmest on record because of different analysis methods. What is important is the long-term trend rather than ranking of individual months or years.
    Nine of the 10 warmest Junes have occurred since 2010.
    Last month was the 44th-consecutive June and the 426th-consecutive month with temperatures above average.
    Arctic sea ice at end of June was 3rd lowest on record
    Details https://bit.ly/3fsD9sr

    SHEFIK
    SHEFIK --- ---
    eko friendly tezba lithia z termalnich vod

    New Process Enables Lithium Mining in Germany −
    https://evobsession.com/new-process-enables-lithium-mining-in-germany/amp/
    TADEAS
    TADEAS --- ---
    PETER_PAN: btw posledni dve zimni sezony na vysocine u masnyho skotu jsem dokrmoval okolo 90 dnu
    TADEAS
    TADEAS --- ---
    PETER_PAN: ymladris to asi myslela tak, ze jsou porad venku, spis nez ze by se pasly celorocne bez dokrmovani pres zimu nebo dodavani krmiva kvuli specialnim potrebam. obecne to je v principu rozdil mezi smerovanim k regenerativnimu zemedelstvi a prumyslovym zemedelstvim. prumyslovy zemedelstvi zavre zvirata do hal a s ekosystemem pak interagujou prostrednictvim stroju a zranim krmiv (analogii s lidma nedomyslejme, ze). v regenerativnim pristupu vyuzivas zvirata maximalne v jejich ekosystemovy funkci (k cemu se v ekosystemu vyvinuly) a minimalizujes potrebny infrastruktury, ktery je od toho ekosystemu oddelujou.

    welfare zvirat se pak da resit separatne v obou kontextech. regenerativni zemedelstvi muze mit mnoho podob z hlediska welfare, stejne jako je tomu u prumyslovyho zemdelstvi. rozdil je ve zpusobu managementu ekosystemu.
    PETER_PAN
    PETER_PAN --- ---
    YMLADRIS: Ve stredoevropskych podminkach to nikdy nebude celorocne (pastva u mlecnych plemen). Jsou ruzne tridy produkovaneho mleka, bezne je dosazitelny cca 150 dnu pastvy/rok. Jsou i s vetsim podilem, ale celorocne to opravdu nejde i z pohledu veterinarniho. Jde to u nekterych masnych plemen (napr. Highland cattle), ale u tech vic uslechtilych je to stejne komplikovane. Mimovegetacni obdobi se stejne musi vykryt senem (zejmena u malochovu) a silazi. Produkce mleka je na silazi a komplexnim krmivu vubec zalozena.

    U mleka teda spotrebu vody vidim jako ten nejmensi problem, resp. zanedbatelny vzhledem ke spotrebe vody pro jakoukoliv prumyslovou aktivitu vedouci k produkci cehokoliv co je predmet denni potreby (vaticka do usi, tricko, zasilka na poste z eshopu, cokoliv).

    TUHO: Urcite to lze delat dobre i spatne. Ja treba videl chov mlecnych plemen krav v Nemecku a urcite je to neco jineho nez popisujes. Videl jsem radu dalsich chovu, masnych, produkci vajec atd. a s kvalitou, prostorem i zachazeni se zviratama celkem OK. Problem jsou prevozy zvirat - transport, zejmena prasat na vetsi vzdalenosti.
    KEB
    KEB --- ---
    PAD: ta farma co jsem o ní mluvil může mít tak 100 krav nejaky vepřový, trocha drůbeže je to stavěné i jako atrakce pro děcka takže od všeho něco.
    YMLADRIS
    YMLADRIS --- ---
    PAD: 73% atb konzumuje dobytek. tolik k atb rezistenci která nás nejspíš vyřídí ještě dřív než klima ...
    PAD
    PAD --- ---
    TUHO: chapu - ptal jsem se pro to, ze v sousedstvi mame kravin kde je neco pres 200 krav, je to ve dvou kravinech, maji vybeh na pastvinu, myslim, ze se maji v ramci moznosti celkem dobre. je to rodinny podnik a ti majitele to delaji tak nejak s peci mi prijde... jen tim chci rict, ze je mozne mi vice krav na jednom miste aniz by to byl koncentrak.

    v bejvaly praci jsem se setkal s velkochovy krav v usa - tisice kusu dobytka, krmeneho hormony, aby pribyval na vaze rychle. krmeneho antibiotiky, aby se minimalizovaly ztraty. oveseneho wearables, aby se vedelo pekne rychle a automaticky a na dalku, ktere "kusy" jsou i pres to nemocne. to je, jak rikas, peklo:/
    YMLADRIS
    YMLADRIS --- ---
    PAD: kdyz se nepasou na pastve?

    Kliknutím sem můžete změnit nastavení reklam