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    TUHOKlimaticka zmena / Thank you so much for ruining my day


    "Given the sheer enormity of climate change, it’s okay to be depressed, to grieve. But please, don’t stay there too long. Join me in pure, unadulterated, righteous anger."


    "I don’t want your hope. I don’t want you to be hopeful. I want you to panic. I want you to feel the fear I feel every day. And then I want you to act. Once you start to act, the hope is everywhere."

    "Our best scientists tell us insistently that a calamity is unfolding, that the life-support systems of the Earth are being damaged in ways that threaten our survival. Yet in the face of these facts we carry on as usual."

    “We’ve got to stop burning fossil fuels. So many aspects of life depend on fossil fuels, except for music and love and education and happiness. These things, which hardly use fossil fuels, are what we must focus on.”

    A nejde o to, že na to nemáme dostatečné technologie, ty by na řešení použít šly, ale chybí nám vůle a představivost je využít. Zůstáváme při zemi, přemýšlíme až moc rezervovaně. Technologický pokrok to sám o sobě nevyřeší. Problém jsme my, ne technologické nástroje.

    Rostouci hladiny oceanu, zmena atmosferickeho proudeni, zmeny v distribuci srazek a sucha. Zmeny karbonoveho, fosforoveho a dusikoveho cyklu, okyselovani oceanu. Jake jsou bezpecnostni rizika a jake potencialni klady dramatickych zmen fungovani zemskeho systemu?
    Ale take jak funguji masove dezinformacni kampane ropneho prumyslu a boj o verejne mineni na prahu noveho klimatickeho rezimu post-holocenu.
    rozbalit záhlaví
    TADEAS
    TADEAS --- ---
    XCHAOS: no je to kontinuita mezi temahle systemama, na jedny strane otevrenej ekosystem s rocnima obdobima, na druhy strane komplet izolovana indoor produkce. ledky by musely jet z nejaky baterky, ale asi proc ne. :) v tu chvili bys uz ale asi pres to stejne mel nejaky folie kvuli vetru.
    XCHAOS
    XCHAOS --- ---
    TADEAS: ok, to potom záleží na tom, jestli to směřuješ k úplně řízený umělý, technický produkci, nebo jestli uvažuješ spíš z hlediska nějakého "augmented ecosystem" - v zásadě navazuješ na stavitele zavlažovacích systémů. Jedno je extrémní zahrádkářství, extrémní forma pěstování v květináči - druhý vychází spíš z klasickýho zemědělství, kdy se přeci jen nějak reješ v půdě, která není úplně izolovaná od toho okolního prostředí, a jen trochu zaléváš, přihnojuješ, apod. Mě ten LED přísvit jde docela dohromady s agrivoltaikou - stejně už pak máš na poli nějaký kandelábry s těmi panely a dráty, tak proč k tomu nepřidat i ty červené LEDky..
    TADEAS
    TADEAS --- ---
    XCHAOS: ten prisvit v tech celorocnich systemech muze docela hodne regulovat produkci, tzn. treba nepotrebujes zrovna tolik salatu, snizis prisvit :)

    urcite kapitalove-energeticko-materialova investice potrebna ke zrizeni foliaku s prisvitem, kterej pak nefungujuje napriklad listopad-unor je nizsi nez u uplne celorocni produkce, hlavni co ochlazuje je podle me pohyb vzduchu/vitr, rostliny muzou rust i v relativne velkym chladu. ale kdyz uz mas treba akvaponickej system, potrebujes proste aspon tech 20 stupnu celorocne, aby tam mohly bejt ryby a cely to jelo furt stejne.
    XCHAOS
    XCHAOS --- ---
    TADEAS: ten přísvit je důležitej a málo se o tom ví. podle mě by na podzim fungoval i mimo skleníky, protože na podzim se celkově ochlazuje pomalu, rostliny neodumíraj ani tak chladem, ale nedostatkem světla (teprve až později v zimě zmrznou). Když se použijí LED, tak by snad měla stačit červená barva, která na podzim začíná chybět nejdřív (ale tohle jsem slyšl na levelu jedna paní povídala).

    Celoroční průběžná sklizeň je jedna věc, ale i obyčejné prodloužení sezóny do podzimu by se nejspíš počítalo a možná by té energie stačilo relativně málo....
    TADEAS
    TADEAS --- ---
    SHEFIK: podle me kdyz to chcem brat fakt cirkularne, tak je potreba uvazovat waste to energy&heat to food.

    muj konceptualni plan je brat bioodpad, v bioplynce generovat plyn, ten komprimovat pro mimosezonni sklenikovou produkci, tzn. v zime ho spalovat, generovat tak teplo a elektrinu, teplo cpat do skleniku, elektrinou rozsvecovat led prisvit a pohanet tepelny cerpadlo vyhrivajici skleniky [geotermalni vrt v hloubce odpovidajici svym lagem sezonnimu vykyvu teploty v lokalite], odpadni co2 ze spalovani bioplynu posilat do skleniku pro rostliny nebo pro rasy. ... potencialne C negativni system, kde vyuzivas waste stream a konvertujes na mimosezonni sklenikovou produkci, bez fosilnich paliv. ty bilance k tomu zatim nemam, ale na par diplomek by to stacit mohlo .]
    SHEFIK
    SHEFIK --- ---
    Waste to Energy Market - Empowering Future Innovation in Energy Recovery System | AltEnergyMag
    https://www.altenergymag.com/...-market-empowering-future-innovation-in-energy-recovery-system/34578

    Waste to energy is one of the most effective and robust alternative sources of energy, which helps in the reduction of CO2 emissions and thus replace fossil fuels. Using waste as a combustion substance is expected to reduce landfill volumes by more than 90%. For every ton of waste burned, one ton of CO2 emission is reduced, which further helps in eliminating methane, which could be leaked with landfill disposal.
    TADEAS
    TADEAS --- ---
    SHEFIK: bioplynka s ccs
    SHEFIK
    SHEFIK --- ---
    #CCS

    Carbon-negative bioenergy project underway with Chevron, Microsoft and Schlumberger - Renewable Energy World
    https://www.renewableenergyworld.com/...gy-project-underway-with-chevron-microsoft-and-schlumberger/

    The plant will convert agricultural waste biomass, such as almond trees, into a renewable synthesis gas that will be mixed with oxygen in a combustor to generate electricity. More than 99% of the carbon from the process is expected to be captured for permanent storage by injecting carbon dioxide (CO2) underground into nearby deep geologic formations.

    By using biomass fuel that consumes CO2 over its lifetime to produce power and then storing the produced CO2, the process is designed to result in net-negative carbon emissions, because it removes greenhouse gas from the atmosphere. The plant, when completed, is expected to remove about 300,000 tons of CO2 annually.

    The facility will help improve air quality in the Central Valley by using approximately 200,000 tons of agricultural waste annually, in line with the recent California Air Resources Control Board plan to begin phasing out almost all agricultural burning in the Valley by 2025, said the companies in a press release. The bioenergy technology they will use is designed to operate without routine emissions of nitrous oxide, carbon monoxide and particulates from combustion produced by conventional biomass plants, they said.
    PER2
    PER2 --- ---
    TADEAS:
    jeste tim jak se zpomaluje golfskej proud, tak se kumuluje vic teplejsi vody na pobrezi ameriky a:
    https://www.southampton.ac.uk/news/2021/02/hurricane-intensity-ocean-temperature.page

    New research shows that hurricane maximum wind speeds in the subtropical Atlantic around Bermuda have more than doubled on average over the last 60 years due to rising ocean temperatures in the region.
    RADIQAL
    RADIQAL --- ---
    TADEAS: 2 lidi (60+), 56 km2, 5000 krav. Dobrý skóre.
    RADIQAL
    RADIQAL --- ---
    TADEAS: takže... jižní morava? nebo tu máme něco suššího?
    TADEAS
    TADEAS --- ---
    jak se pase 5000 hlavy stado, check it out ,)

    herd impact
    https://youtube.com/watch?v=EBTINtTcBbE&feature=share
    TADEAS
    TADEAS --- ---
    TADEAS: ad ohen

    James C Scott: The Domestication of Fire, Animals, Grains and.......Us
    http://www.youtube.com/watch?v=oQgQRmx19HA
    TADEAS
    TADEAS --- ---
    longread s hezkou infografikou


    In the Atlantic Ocean, Subtle Shifts Hint at Dramatic Dangers
    https://www.nytimes.com/interactive/2021/03/02/climate/atlantic-ocean-climate-change.html


    a spate of studies, including one published last week, suggests this northern portion of the Gulf Stream and the deep ocean currents it’s connected to may be slowing. Pushing the bounds of oceanography, scientists have slung necklace-like sensor arrays across the Atlantic to better understand the complex network of currents that the Gulf Stream belongs to, not only at the surface, but hundreds of feet deep.

    “We’re all wishing it’s not true,” Peter de Menocal, a paleoceanographer and president and director of the Woods Hole Oceanographic Institution, said of the changing ocean currents. “Because if that happens, it’s just a monstrous change.”

    The consequences could include faster sea level rise along parts of the Eastern United States and parts of Europe, stronger hurricanes barreling into the Southeastern United States, and perhaps most ominously, reduced rainfall across the Sahel, a semi-arid swath of land running the width of Africa that is already a geopolitical tinderbox.

    ...

    The scientists’ concern stems from their understanding of thousands of years of the prehistoric climate record. In the past, a great weakening or even shutdown of this arm of the Gulf Stream seems to have triggered rapid changes in temperatures and precipitation patterns around the North Atlantic and beyond.

    The northern arm of the Gulf Stream is but one tentacle of a larger, ocean-spanning tangle of currents called the Atlantic Meridional Overturning Circulation, or AMOC. Scientists have strong evidence from ice and sediment cores that the AMOC has weakened and shut down before in the past 13,000 years. As a result, mean temperatures in parts of Europe may have rapidly dropped to about 15 degrees Celsius below today’s averages, ushering in arctic like conditions. Parts of northern Africa and northern South America became much drier. Rainfall may even have declined as far away as what is now China. And some of these changes may have occurred in a matter of decades, maybe less.

    ...

    The science remains relatively new, and not everyone agrees the AMOC is actually slowing. But in both scientific modeling of climate change and in the prehistoric record, a North Atlantic cooling presages a shutdown of the current. “One of the hallmarks of a shutdown is this cold blob,” says Dr. de Menocal. “The cold blob is a big deal.”

    ...

    The clearest example began about 12,800 years ago. Glaciers that had once covered much of North America and Europe had retreated considerably, and the world was almost out of the deep freeze. But then, in just a few decades, Greenland and Western Europe plunged back into cold. Temperatures fell by around 10 degrees Celsius, or 18 degrees Fahrenheit, in parts of Greenland. Arctic-like conditions returned to parts of Europe.

    The cold snap lasted perhaps 1,300 years — before reversing even more abruptly than it began. Scientists have observed the sudden changes in the pollen deposited at the bottom of European lakes and in changes in ocean sediments near Bermuda.

    This forced a paradigm shift in how scientists thought about climate change. Earlier, they had tended to imagine creeping shifts occurring over many millennia. But by the late 1990s, they accepted that abrupt transitions, tipping points, could occur.

    This didn’t bode well for humanity’s warming of the atmosphere. Dr. Broecker, who died in 2019, famously warned: “The climate system is an angry beast and we are poking it with sticks.”

    ...

    WHY DID THE AMOC shut down? A leading theory is that meltwater from retreating glaciers emptied into the North Atlantic or Arctic oceans. Freshwater is lighter than saltwater, and the sudden influx of more buoyant water could have impeded the sinking of denser, saltier water — that critical “overturning” phase of the AMOC.

    Today we don’t have massive glacial lakes threatening to disgorge into the North Atlantic. But we do have the Greenland ice sheet, which is melting at the upper end of projections, or about six times faster than in the 1990s. And according to one study, the subpolar North Atlantic recently became less salty than at any time in the past 120 years.

    There’s little agreement on cause. Changes in wind patterns or currents may be contributing, as could greater rainfall. But Stefan Rahmstorf, a physical oceanographer with the University of Potsdam in Germany, suspects that, similar to what happened some 12,800 years ago, meltwater from Greenland is beginning to slow the AMOC.
    SHEFIK
    SHEFIK --- ---
    Tenfold increase in CO2 emissions cuts needed to stem climate emergency -- ScienceDaily
    https://www.sciencedaily.com/releases/2021/03/210303142601.htm

    New research shows 64 countries cut their fossil CO2 emissions during 2016-2019, but the rate of reduction needs to increase tenfold to meet the Paris Agreement aims to tackle climate change.
    SHEFIK
    SHEFIK --- ---
    linky na zajmavy studie uvnitr

    Novinky o klimatu: Gates má návod na snížení emisí. Vím, jak je dostat na nulu, tvrdí
    https://zpravy.aktualne.cz/...0cc47ab5f122/?utm_source=mediafed&utm_medium=rss&utm_campaign=mediafed
    SEJDA
    SEJDA --- ---
    SHEFIK: jop, jakekoli vyuziti odpadnich energii je super, viz. spalovny odpadu.
    SHEFIK
    SHEFIK --- ---
    JIMIQ: kdybych chtel rejpat, zeptal bych se, jestli tezba bitcoinu nepotrebuje taky infrastrukturu. taky bych se moh zeptat na srovnani pridane hodnoty jednotlivych reseni z pohledu lidstva/klimatu/jednotlivce

    ale rejpat nebudu :)
    JIMIQ
    JIMIQ --- ---
    SHEFIK: z toho není tak rychlej zisk bez další infrastruktury :)
    SHEFIK
    SHEFIK --- ---
    JIMIQ: v hlavni roli bitcoin "vysvoboditel" :))

    selsky rozum mi rika, ze kdyz je mozny z odpadniho plynu tezit bitcoin, je taky mozny tu energii treba konvertovat na vodik atd.
    JIMIQ
    JIMIQ --- ---
    Bitcoin jako požírač energie. Ale co když je to naopak? - Seznam Zprávy
    https://www.seznamzpravy.cz/clanek/bitcoin-jako-pozirac-energie-ale-co-kdyz-je-to-naopak-145138

    Odpadní plyn jako vedlejší produkt těžby ropy je uvázlá, nepoužitelná energie, generující jen náklady a spaliny.

    Tedy byla to nepoužitelná energie, dokud firma Crusoe nezačala dodávat mobilní kontejnery obsahující turbínu, generátor a datové centrum. Tato sestava umí ukončit bezúčelné a neekologické pálení plynu a vysvobozenou energií zásobovat těžbu bitcoinů, financující celou hru. Marty Bent z firmy GAM odhaduje, že jedna instalace za jeden měsíc spotřebuje a zaplatí plyn asi za $475k. Plyn, který by jinak přišel nazmar. Ročně se na světě bez užitku spálí asi 150 miliard m3 plynu, což by Česku stačilo skoro na 20 let.

    Těžba bitcoinů nabízí cestu, jak monetizovat nepřenositelnou energii, ať je, kde je. Nic takového dosud nebylo možné a profit je skvělá motivace.
    Kliknutím sem můžete změnit nastavení reklam