An Oxford-based solar technology firm hopes by the end of the year to begin manufacturing the world’s most efficient solar panels, and become the first to sell them to the public within the next year.
Oxford PV claims that the next-generation solar panels will be able to generate almost a third more electricity than traditional silicon-based solar panels by coating the panels with a thin layer of a crystal material called perovskite.
The breakthrough would offer the first major step-change in solar power generation since the technology emerged in the 1950s, and could play a major role in helping to tackle the climate crisis by increasing clean energy.

UK firm's solar power breakthrough could make world's most efficient panels by 2021 | Business | The Guardian
https://www.theguardian.com/...ar-power-breakthrough-could-make-worlds-most-efficient-panels-by-2021

Evropa sice v současné době tvoří největší synchronní přenosovou soustavu na světě, přenosové kapacity přeshraničních vedení však často potřebám trhu nestačí.
Další rozšiřování možností přeshraničního obchodování je důležitým předpokladem pro intenzivní rozvoj obnovitelných zdrojů.

Studie: Naplnění Zelené dohody si do roku 2040 vyžádá 93 GW nových přeshraničních přenosových kapacit
https://oenergetice.cz/...dohody-si-roku-2040-vyzada-93-gw-novych-preshranicnich-prenosovych-kapacit

Největší investice do ALS je samozřejmě na počátku zakládání. Zkušenosti z Velké Británie (Stephen Briggs) při kombinaci pšenice a linií jabloní (alley cropping) ukazují, že návratnost výsadeb je sedm let. V případě pěstování vysoce kvalitních sortimentů ořešáků, opět v liniích, s mezipásy pšenice tvrdé, lze dřevo v „mýtním“ věku, tj. asi ve 30ti letech, zhodnotit za přibližně 1000 EUR za m3 (zkušenosti z jižní Francie). Podobné ekonomické výnosy mohou být i v silvopastevních systémech.

Při hospodaření v naší krajině jsou často dávány do protikladu ekonomické zájmy a zájmy ochrany životního prostředí a krajiny. Na příkladu ALS však lze ukázat, že tyto dva principy nemusejí jít nutně proti sobě. Jde pouze o časový horizont, ve kterém se obě složky vyhodnocují. Pokud se farmář stará o kvalitu půdy, znamená to nižší výnos v krátkodobém horizontu, ale vyšší zisk v horizontu středně nebo dlouhodobém.

Biom :: Jakub Houška : Agrolesnictví pomůže krajině i zemědělství : Biom.cz
https://biom.cz/cz/odborne-clanky/agrolesnictvi-pomuze-krajine-i-zemedelstvi

SHEFIK: 40% jede ale v elektrine. Pokud se podivas na podil OZE na celkove spotrebe veskere energie, je ten podil radove mensi (par prizpevku zpet jsem tu daval graf, bouzel jen pro cely svet, ciste pro EU jsem nenasel, nicmene ten rozdil bude take obrovsky - mnozstvi fosilnich paliv, ktere potrebujeme do zemedelstvi, prumyslu, vytapeni budov a dopravy je obrovsky).

Emerging land use practices rapidly increase soil organic matter
https://www.nature.com/articles/ncomms7995

The loss of organic matter from agricultural lands constrains our ability to sustainably feed a growing population and mitigate the impacts of climate change. Addressing these challenges requires land use activities that accumulate soil carbon (C) while contributing to food production. In a region of extensive soil degradation in the southeastern United States, we evaluated soil C accumulation for 3 years across a 7-year chronosequence of three farms converted to management-intensive grazing. Here we show that these farms accumulated C at 8.0 Mg ha−1 yr−1, increasing cation exchange and water holding capacity by 95% and 34%, respectively. Thus, within a decade of management-intensive grazing practices soil C levels returned to those of native forest soils, and likely decreased fertilizer and irrigation demands. Emerging land uses, such as management-intensive grazing, may offer a rare win–win strategy combining profitable food production with rapid improvement of soil quality and short-term climate mitigation through soil C-accumulation.

SHEFIK: Snad mas pravdu. Tam, kde to lide chteji jednohlasne (jako v te jedne visce, kde z toho maji lidi i profit), to imho nebude problem. Na druhou stranu tam, kde je i byt mensi opozice, to problem bude, protoze CDU/CSU se boji AdF, ktera se tohoto tematu chyta. At si o tom my dva myslime co chceme, pro nezanedbatelnou cast populace jsou proste vetrniky hnusny, vadi jim ten hluk a chteji proste neco jineho. Bud jim proste zacpou huby penezma, nebo se stavbou ve vnitrozemi uz to nikdy nebude tak, jak drive.

Cca pred pul rokem jsem tu daval info, jak Nemci nechteji nova potrebna HVDC vedeni zejmena ze severu na jih, protoze hyzdi krajinu. Chteji to zakopat pod zem, coz tuto nezbytnou cast Energiewende nerealisticky prodrazuje. OZE v takoveto mire jsou proste prostorove velmi narocne. Ne kazdemu se to libi.

Muze to byt, jak rikas, problem jen par politiku. Muze za tim byt ale taky fundamentalnejsi vystrizliveni. Ten clanek z tzb-info nedavno citovany taky tady tvrdi, ze proste v Nemecku neni realisticky dost mista na pokryti veskere energeticke potreby z OZE a ze budou muset dovazet. Je dost mozne, ze Altmaierova administrativa proste dospela k tomuto zaveru (ostatne tim on argumentuje) a podle toho se chova. Asi si prectu tu puvodni studii, docela by me zajimalo, jak k tomu zaveru vlastne prisli.

Uhelne el. stavet nebudou, ale mohou posunout termin vypnuti. Jadro asi nikdy znovu nezapnou, na to jsou priliz hystericky. Takze muj tip je, ze budou stavet vice plynu - a sponzorovat tak rozmach Uruk-hai Ruska.

Did We Break the Planetary Temperature Record Sunday? Probably So! - Dan's Wild Wild Science Journal - AGU Blogosphere
https://blogs.agu.org/...020/08/17/did-we-break-the-planetary-temperature-record-sunday-probably-so/

death valley 130F

"Limity jsme my" hledaji nejaky vhodny pozemek na upsoradani Klimakempu (s majitelem, ktery ustoji policejni bububu).

Limity jsme my
55 min ·
Tak jako každý rok i nyní naší činnost doprovází modrý tým. I letos policie zastrašuje starosty a starostky či zastupitele obcí a vypráví jim o nás lži. I v současnosti probíhající Klimajízda Sokolov - Ústí za spravedlivou transformaci provází eskorta. Jak dlouhodobě upozorňujeme, Policie České republiky tím jasně překračuje své pravomoci!‍✈️❌
Boj za klima není zločin, ale vydělávat miliardy na spalování uhlí a ničení klimatu je!
Výsledek je takový, že dva týdny před Akční víkend Limity jsme my 2020: Konec uhlí #TEĎ jsme stále ve fázi shánění pozemku. Víš o nějaké vhodné louce, kde bychom mohli kemp uspořádat? Napiš nám do zpráv nebo na mail ahoj@limityjsmemy.cz. Solidarita je naší zbraní! ‍♀️‍♀️
"Praktiky policistů ve vztahu ke Klimakempu kritizuje právní zástupce hnutí Limity jsme my Pavel Uhl. Podle něj jsou netransparentní a v rozporu se zákonem. „Policie nemá mandát k tomu, aby vyvíjela jakoukoli činnost, která by směřovala k ovlivnění rozhodování samospráv,“ uvedl advokát."

Alexander Ač, Ph.D.
30 min ·
Keď som pred viac ako 10 rokmi diskutoval s kolegom lesníkom situáciu so smrekmi v našich zemepisných šírkach, tvrdil som, že v krátkom čase (v nadchádzajúcich desaťročiach) to má väčšina smrekov spočítané.
Nepochodil som. Jeden z argumentov bol, že smreky majú vysokú genofondovú variabilitu a (preto aj) pomerne vysokú prispôsobivosť na lokálne klimatické podmienky. Dúfam, že teraz by som už pochodil...
Fotka zachytáva uschnuté smreky v Národnom parku Harz v Nemecku, ktoré usychajú následkom vysokých teplôt, sucha, a lykožrúta. Ďalší vplyv, ktorý vo zvýšenej miere poškodzuje (nielen monokultúrne) lesy sú rozsiahle veterné kalamity.

2020 Deforestation and world population sustainability: a quantitative analysis
https://www.nature.com/articles/s41598-020-63657-6

Among Hart’s arguments, the self-destruction hypothesis especially needs to be rediscussed at a deeper level. Self-destruction following environmental degradation is becoming more and more an alarming possibility. While violent events, such as global war or natural catastrophic events, are of immediate concern to everyone, a relatively slow consumption of the planetary resources may be not perceived as strongly as a mortal danger for the human civilisation. Modern societies are in fact driven by Economy, and, without giving here a well detailed definition of “economical society”, we may agree that such a kind of society privileges the interest of its components with less or no concern for the whole ecosystem that hosts them (for more details see29 for a review on Ecological Economics and its criticisms to mainstream Economics). Clear examples of the consequences of this type of societies are the international agreements about Climate Change. The Paris climate agreement30,31 is in fact, just the last example of a weak agreement due to its strong subordination to the economic interests of the single individual countries. In contraposition to this type of society we may have to redefine a different model of society, a “cultural society”, that in some way privileges the interest of the ecosystem above the individual interest of its components, but eventually in accordance with the overall communal interest. This consideration suggests a statistical explanation of Fermi paradox: even if intelligent life forms were very common (in agreement with the mediocrity principle in one of its version32: “there is nothing special about the solar system and the planet Earth”) only very few civilisations would be able to reach a sufficient technological level so as to spread in their own solar system before collapsing due to resource consumption.

We are aware that several objections can be raised against this argument and we discuss below the one that we believe to be the most important. The main objection is that we do not know anything about extraterrestrial life. Consequently, we do not know the role that a hypothetical intelligence plays in the ecosystem of the planet. For example not necessarily the planet needs trees (or the equivalent of trees) for its ecosystem. Furthermore the intelligent form of life could be itself the analogous of our trees, so avoiding the problem of the “deforestation” (or its analogous). But if we assume that we are not an exception (mediocrity principle) then independently of the structure of the alien ecosystem, the intelligent life form would exploit every kind of resources, from rocks to organic resources (animal/vegetal/etc), evolving towards a critical situation. Even if we are at the beginning of the extrasolar planetology, we have strong indications that Earth-like planets have the volume magnitude of the order of our planet. In other words, the resources that alien civilisations have at their disposal are, as order of magnitude, the same for all of them, including ourselves. Furthermore the mean time to reach the Dyson limit as derived in Eq. 6 depends only on the ratio between final and initial value of T and therefore would be independent of the size of the planet, if we assume as a proxy for T energy consumption (which scales with the size of the planet), producing a rather general result which can be extended to other civilisations. Along this line of thinking, if we are an exception in the Universe we have a high probability to collapse or become extinct, while if we assume the mediocrity principle we are led to conclude that very few civilisations are able to reach a sufficient technological level so as to spread in their own solar system before the consumption of their planet’s resources triggers a catastrophic population collapse. The mediocrity principle has been questioned (see for example Kukla33 for a critical discussion about it) but on the other hand the idea that the humankind is in some way “special” in the universe has historically been challenged several times. Starting with the idea of the Earth at the centre of the universe (geocentrism), then of the solar system as centre of the universe (Heliocentrism) and finally our galaxy as centre of the universe. All these beliefs have been denied by the facts. Our discussion, being focused on the resource consumption, shows that whether we assume the mediocrity principle or our “uniqueness” as an intelligent species in the universe, the conclusion does not change. Giving a very broad meaning to the concept of cultural civilisation as a civilisation not strongly ruled by economy, we suggest for avoiding collapse34 that only civilisations capable of such a switch from an economical society to a sort of “cultural” society in a timely manner, may survive. This discussion leads us to the conclusion that, even assuming the mediocrity principle, the answer to “Where is everybody?” could be a lugubrious “(almost) everyone is dead