TUHO: V USA se uvádí spotřeba ne kolik Ti to sežere na míli, ale kolik ujedeš na jeden galon. Čím vyšší číslo, tím úspornější.

PER2: PER2: mate pochopitelne pravdu, psal jsem to lehce ve zkratu po zaplaceni kupe ,) u toho ryanairu je to dost teoreticka hodnota, sorry

OMNIHASH: leoexpress na vychod alovenska luzka nema ne?

TUHO: je to kolik mil ma ujet na galon, vic=lip.

GLOBETROTTER: 5.8l/100km. To ale je průměrná spotřeba i u 10l starých osobních aut... kdo nemá SUV, nemá problém...

neutronovy merak uhliku a dalsich prvku v pude

Team develops new method of hunting for carbon in soil without digging or taking soil samples
https://phys.org/news/2022-03-team-method-carbon-soil-samples.html

The new method of measurement developed by the Berkeley Lab team eliminates the need to dig anything out of the ground at all. Instead, the as-yet-unnamed device scans the soil with a beam of neutrons. Then a detector senses the faint response of the carbon and other elements in the soil to the neutrons, allowing it to map the distribution of different elements within the soil to a resolution of about five centimeters. All this happens above the ground, with no holes, no cores, and no burning. "It's like giving the soil an MRI," said Persaud, who is a staff scientist in ATAP. "We get a three-dimensional picture of the soil and the carbon distribution in it, along with other elements like iron, silicon, oxygen, and aluminum, which are all important to understand the persistence of carbon in soil."

"What really excites me about this neutron imaging approach is that it lets us effectively and accurately image the carbon distributions in soils at the scales that carbon accounting needs to happen at," added Brodie. "And we can do it repeatedly over growing seasons, to see how it's changing with different climates and land management practices. Eventually you could use this to identify what specific land management practices are more effectively drawing carbon down from the atmosphere and storing it in soil."

Dnes bylo v USA schváleno nařízení, že v roce 2026 musí mít průměrné auto spotřebu 40 mil na galon, namísto původně plánovaných 28. To bude pro výrobce a dovozce docela oříšek.

Ozone may be heating the planet more than we realize
https://phys.org/news/2022-03-ozone-planet.html

A new study has revealed that changes to ozone levels in the upper and lower atmosphere were responsible for almost a third of the warming seen in ocean waters bordering Antarctica in the second half of the 20th century.

The deep and rapid warming in the Southern Ocean affects its role as one of the main regions for soaking up excess heat as the planet warms.

The majority of this warming was the result of ozone increases in the lower atmosphere. Ozone—one of the main components of smog—is already hazardous as a pollutant, but the research shows it may also play a significant role in driving climate change in the coming years.

Dr. Michaela Hegglin, an Associate Professor in atmospheric chemistry and one of the study's authors, said: "Ozone close to Earth's surface is harmful to people and the environment, but this study reveals it also has a big impact on the ocean's ability to absorb excess heat from the atmosphere.

"These findings are an eye-opener and hammer home the importance of regulating air pollution to prevent increased ozone levels and global temperatures rising further still."

...

They revealed that the increased ozone in the lower atmosphere caused 60% of the overall ozone-induced warming seen in the Southern Ocean over the period studied—far more than previously thought. This was surprising because tropospheric ozone increases are mainly thought of as a climate forcing in the Northern hemisphere since that is where the main pollution occurs.

...

"We have known for a while that ozone depletion high in the atmosphere has affected surface climate in the Southern Hemisphere. Our research has shown that ozone increases in the lower atmosphere due to air pollution, which occurs primarily in the Northern Hemisphere and 'leaks' into the Southern Hemisphere, is a serious problem as well.

Changes in ozone concentrations in the atmosphere affect westerly winds in the Southern Hemisphere as well as causing contrasting levels of salt and temperature close to the surface in the Southern Ocean. Both affect ocean currents in distinct ways, thereby affecting ocean heat uptake.