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TOAR shows present-day global ozone distribution and trends relevant to health; public database

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Ozone levels across much of North America and Europe dropped significantly between 2000 and 2014. People living in parts of southern Europe, South Korea and southern Japan and China also experienced more than 15 days a year of ozone levels above 70 ppb. Source: University of Leicester. Click to enlarge.

Ozone 255
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EEA report finds most Europeans in cities still exposed to levels of air pollution exceeding WHO guidelines

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Among the findings: Concentrations of particulate matter (PM) continued to exceed the EU limit values and the WHO AQGs in large parts of Europe in 2017. was exceeded at 69% of the stations located in all of the reporting countries, except Estonia, Finland and Norway. For PM with a diameter of 10 ?m The long-term WHO AQG for PM 2.5

Pollution 170
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International study of role of soots impact on Arctic climate

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Scientists from the US, Norway, Russia, Germany, Italy and China are participating in a study examining the potential role of black carbon, or soot, on the rapidly changing Arctic climate. The study will run through 15 May out of Svalbard, Norway. The Arctic climate is changing faster than some scientists expected.

Climate 199
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Test of Planet-Cooling Scheme Could Start in 2022

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Up there, 10 to 50 kilometers above the Earth’s surface, ozone molecules absorb the sun’s ultraviolet light, protecting life far below. Even less is understood about the potential risks to people and the environment—could the particles deplete the ozone layer, for example, or significantly alter the weather? about 0.6 °C.

Ozone 127
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Sponsors of SAE Study Conclude HFO-1234yf Can Be Used As Low-GWP Global Replacement Refrigerant in MAC Systems

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HFO-1234yf is a non-Ozone Depleting Substance with a Global Warming Potential (GWP) of 4. As part of the studies, the automotive industry conducted evaluations on a variety of vehicle applications. This new refrigerant is part of a larger platform of low-GWP refrigerants and blowing agents that Honeywell is developing.

Global 186
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Study finds climate impact of long distance trip can vary by factor of 10 depending upon mode, efficiency and occupancy

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Bold parts of curves indicate typical occupancy ranges. A team from Austria and Norway has found that the climate impact from a long-distance trip (500–1,000 km, or 310–621 miles) can easily vary by a factor of 10 per passenger depending on mode choice, vehicle efficiency, and occupancy. Credit: ACS, Borken-Kleefeld et al.

Climate 186