osel je známý tím, že ohledně globálního oteplování rád rozšíří cokoliv, z čeho vyjde jakýkokliv jiný výsledek neže nutnost masivní podpory jaderné energie tady a teď :-) ovšem s tím dřevem je to fakt zajímavé, jestli je pravda, že dřevěné uhlí ve spálených lesích není vlastně úložiště uhlíku, ale dál katalyzuje rozklad biomasy, tak je to vlastně docela vážný problém....
:: OSEL.CZ :: - Dřevo v globálním uhlíkovém cyklu
https://www.osel.cz/11918-drevo-v-globalnim-uhlikovem-cyklu.html

(každopádně uložení dřeva na budoucí použití coby stavebního materiálu mi pořád přijde jako nejperspektivnější carbon capture vůbec, i po přečetení tohohle článku.. lesy je dobré občas pokácet, jen se to nesmí ani nechat shnít, ani spálit..)

PER2: to nejsou dobry zpravy. beznej obcan tuhle komplexitu vztahu dat nemuze. A uniky urcite budou, dosavadniho metanu z ropnejch lozisek, stejne tak vodiku, jak se bude budovat novej energetickej ekosystem...

#doomed

PER2: vodik nas vsechny spasi, jooo :)

When scientists analyzed air samples trapped in drilled cores of Antarctica's ice, they found atmospheric hydrogen had increased 70 percent over the course of the 20th century.

Even as recent air pollution laws have sought to curb fossil fuel emissions, hydrogen emissions have continued to surge with no signs of slowing down. And there's a chance that leakage is to blame.

No one has directly measured how much hydrogen leaks from these processes, but initial estimates suggest it could be significant.

They can't be sure this is where the hydrogen is coming from – hydrogen emissions from coal combustion are also seriously understudied – but the authors argue it's worth investigating more.

Especially since green hydrogen processes, which split hydrogen from water to create carbon-free power, could also result in substantial leakage if they are one day scaled up, as some climate scientists and environmentalists hope they will be.

If hydrogen one day leaks from industrialized hydrogen gas plants, experts are troubled it could increase the lifetime of methane in our atmosphere, a greenhouse gas 20 times more potent than carbon dioxide.

SEJDA: hranicni dezinfo no .]

hodne asi urobi ten priemysel, ak sa napr. v nejakej automobilke, kde pracuje 100 ludi spotrebuju hektolitre vody denne, tak tam bude ten priemer na osobu asi vysoky

spotreba vody mierne klesla, asi ludom doslo, ze to nie je tak samozrejma vec, my mame podla udajov z vodaren dlhodobu priemernu dennu spotrebu 0,27m3 na domacnost (4 osoby) co je teda pod priemerom CR, tak to mam radost, ze moc neplytvame

Vodovody v Česku rostou rychleji než dálnice, napojeno už je 94,6 % obyvatel | EnergoZrouti.cz
https://energozrouti.cz/z/vodovody-v-cesku-rostou-rychleji-nez-dalnice-napojeno-uz-je-94-6-obyvatel

Almost 90% of the $540bn in global subsidies given to farmers every year are “harmful”, a startling UN report has found.

This agricultural support damages people’s health, fuels the climate crisis, destroys nature and drives inequality by excluding smallholder farmers, many of whom are women, according to the UN agencies.

The biggest sources of greenhouse gas emissions, such as beef and milk, received the biggest subsidies, the report said. These are often produced by large industrialised groups that are best placed to gain access to subsidies.

Without reform, the level of subsidies was on track to soar to $1.8tn (£1.3tn) a year by 2030, further harming human wellbeing and worsening the planetary crisis, the UN said.

A Soil-Science Revolution Upends Plans to Fight Climate Change
https://www.quantamagazine.org/a-soil-science-revolution-upends-plans-to-fight-climate-change-20210727/

“I have The Nature and Properties of Soils in front of me — the standard textbook,” said Gregg Sanford, a soil researcher at the University of Wisconsin, Madison. “The theory of soil organic carbon accumulation that’s in that textbook has been proven mostly false … and we’re still teaching it.”

The consequences go far beyond carbon sequestration strategies. Major climate models such as those produced by the Intergovernmental Panel on Climate Change are based on this outdated understanding of soil. Several recent studies indicate that those models are underestimating the total amount of carbon that will be released from soil in a warming climate. In addition, computer models that predict the greenhouse gas impacts of farming practices — predictions that are being used in carbon markets — are probably overly optimistic about soil’s ability to trap and hold on to carbon.

It may still be possible to store carbon underground long term. Indeed, radioactive dating measurements suggest that some amount of carbon can stay in the soil for centuries. But until soil scientists build a new paradigm to replace the old — a process now underway — no one will fully understand why

...

Lehmann, whose studies using advanced microscopy and spectroscopy were among the first to reveal the absence of humus, has become the concept’s debunker-in-chief. A 2015 Nature paper he co-authored states that “the available evidence does not support the formation of large-molecular-size and persistent ‘humic substances’ in soils.” In 2019, he gave a talk with a slide containing a mock death announcement for “our friend, the concept of Humus.”

Over the past decade or so, most soil scientists have come to accept this view. Yes, soil is enormously varied. And it contains a lot of carbon. But there’s no carbon in soil that can’t, in principle, be broken down by microorganisms and released into the atmosphere. The latest edition of The Nature and Properties of Soils, published in 2016, cites Lehmann’s 2015 paper and acknowledges that “our understanding of the nature and genesis of soil humus has advanced greatly since the turn of the century, requiring that some long-accepted concepts be revised or abandoned.

...

More recent generations of models, including ones that the Intergovernmental Panel on Climate Change uses for its widely read reports, are essentially palimpsests built on earlier ones, said Torn. They still assume soil carbon exists in long-term and short-term pools. As a consequence, these models may be overestimating how much carbon will stick around in soils and underestimating how much carbon dioxide they will emit.

Last summer, a study published in Nature examined how much carbon dioxide was released when researchers artificially warmed the soil in a Panamanian rainforest to mimic the long-term effects of climate change. They found that the warmed soil released 55% more carbon than nearby unwarmed areas — a much larger release than predicted by most climate models. The researchers think that microbes in the soil grow more active at the warmer temperatures, leading to the increase

...

Another related, and poorly understood, ingredient in a new soil paradigm is the fate of carbon within the soil. Researchers now believe that almost all organic material that enters soil will get digested by microbes. “Now it’s really clear that soil organic matter is just this loose assemblage of plant matter in varying degrees of degradation,” said Sanderman. Some will then be respired into the atmosphere as carbon dioxide. What remains could be eaten by another microbe — and a third, and so on. Or it could bind to a bit of clay or get trapped inside a soil aggregate: a porous clump of particles that, from a microbe’s point of view, could be as large as a city and as impenetrable as a fortress. Studies of carbon isotopes have shown that a lot of carbon can stick around in soil for centuries or even longer. If humus isn’t doing the stabilizing, perhaps minerals and aggregates are

...

Researchers agree that soil science is in the midst of a classic paradigm shift. What nobody knows is exactly where the field will land — what will be written in the next edition of the textbook. “We’re going through a conceptual revolution,” said Mark Bradford, a soil scientist at Yale University. “We haven’t really got a new cathedral yet. We have a whole bunch of churches that have popped up.

Walter Jehne -- Understanding the Water Cycle: And the potential for rapid global cooling
https://youtube.com/watch?v=_TsX7ffouxQ&feature=youtu.be


We understand that the health and regeneration of soil ecosystems, and by extension the plant and animal communities with which they are interdependent, are critical to the sequestration of carbon and foundational to any successful efforts to mitigate the impacts of climate change. But there is a vital part of the story of soil regeneration and global climate mitigation that hasn’t been as well covered as the carbon cycle – and that is the global water cycle.

Walter will explore how soil biology controls the water cycle, and how the water cycle regulates the planet’s heating and cooling processes. He will provide a deep look at the intersection of soil regeneration practices and the restoration of hydrological processes. Participants will gain insight and inspiration toward practices they can apply to their own farms and gardens, as well as a larger context of theory that integrates our knowledge of the water cycle and its role in regulating global temperature with current efforts toward conservation and regeneration of living soils.

From the 2021 Soil & Nutrition Conference - https://soilandnutrition.org/​

Hosted by the Bionutrient Food Association - https://bionutrient.org