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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. Trends in daily maximum ozone levels (known as 4MDA8) at urban and non-urban sites.

Ozone 255
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Satellite method provides insight into ozone-NOx-VOCs sensitivity for different locations

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Ozone pollution near Earth’s surface is one of the main ingredients of summertime smog. It is also not directly measurable from space due to the abundance of ozone higher in the atmosphere, which obscures measurements of surface ozone. —Jin et al.

Ozone 150
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Fast action on black carbon, ozone and methane could help limit global temperature rise to 2 degrees C

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Fast action on pollutants such as black carbon, ground-level ozone and methane may help limit near term global temperature rise and significantly increase the chances of keeping temperature rise below 2 °C (3.6 °F)—and sector in industrialized countries. for 2030 and beyond. Source: UNEP. Click to enlarge. °C (2.7 °F),

Ozone 218
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Study: 87% of world’s population in 2013 lived in areas exceeding WHO PM2.5 guidelines

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increased by 20.4%, driven by trends in South Asia, Southeast Asia, and China, according to the team’s findings. Additionally, the study found that the population-weighted mean concentrations of ozone increased globally by 8.9% An additional 217,000 deaths were attributable to long-term ozone exposure. and ozone (O 3 ).

2013 150
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Study finds global emissions of ethane and propane underestimated by more than 50%

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When ethane and propane—the most abundant non-methane hydrocarbons (NMHC) in the atmosphere—mix with nitrogen oxides from vehicles and power plants they form tropospheric ozone—a key component of smog and directly linked to increases in mortality. The study used data collected from 20 observatories world-wide.

Emissions 210
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Air pollution could claim 6.6 million lives per year by 2050, double current rate; small domestic fires and ag the worst offenders

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The largest sources of air pollution are not industry and transport but small domestic fires and agriculture. Exposure to air pollution is particularly acute in Asia, especially in China and India, where three-quarters of the world’s pollution-related deaths occur. Results of the study are published in the journal Nature.

Pollution 150
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Study finds that under business-as-usual scenario, average global air quality to worsen; China, North India and Middle East are the hot spots

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Following this BAU scenario, the researchers projected that air quality for the global average citizen in 2050 would be almost comparable to that for the average citizen in East Asia in the year 2005—an outcome which underscores the need to pursue emission reductions, according to the authors. —Pozzer et al. Resources.

India 240