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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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EPA proposes approval of new ozone plans for the two of the worst Air Quality Zones in US: California’s San Joaquin Valley and South Coast

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US EPA Region 9 8-hour ozone trends, 1979-2000. These State Implementation Plans (SIPs) are the roadmaps to meeting the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) of 0.08 In 1997, EPA first established the 8-hour ozone standard, which replaced the older 1-hour ozone standard (0.12 Source: EPA.

Ozone 236
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UN report projects that increasing use of HFCs likely to have a significant climate impact by 2050; equivalent to current total annual emissions from transport

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The decrease in CO 2 equivalent emissions of ODSs (ozone-depleting substances: CFCs, halons, HCFCs, and others) may be offset by the projected increase in their non-ozone depleting substitutes (HFCs) (lines designated as HFC scenarios). W m -2 relative to 2000. Climate and the Ozone Layer. Source: UNEP. Click to enlarge.

Climate 287
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IPCC: GHG emissions accelerating despite mitigation efforts; major institutional and technological change required to keep the heat down

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giga tonne carbon dioxide equivalent (GtCO 2 eq) (2.2%) per year from 2000 to 2010 compared to 0.4 GtCO 2 eq (1.3%) per year from 1970 to 2000. Total anthropogenic GHG emissions were the highest in human history from 2000 to 2010 and reached 49 (±4.5) GtCO 2 eq/yr in 2010. Transport sector.

Emissions 257
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US NOx Cap and Trade Program Lowers Smog Levels in Eastern United States

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The existing US NO x cap-and-trade program lowered 2008 summertime NO x emissions from power plants and large industrial sources 62% compared to year 2000 levels and 75% lower than in 1990, according to a report released by the US Environmental Protection Agency (EPA). State level ozone emissions in the NBP, from 1990 to 2010 (projected).

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HEI: 95%+ of world’s population live in areas of unhealthy air

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Ozone, another important component of outdoor air pollution, whose levels are on the rise around the world, contributed to 234,000 deaths from chronic lung disease. Population-weighted seasonal average ozone concentrations in 2016. Worldwide exposure to PM 2.5 contributed to 4.1 State of Global Air 2018.

Pollution 218
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Study Finds Traveling by Car Increases Global Temperatures More than Traveling by Plane In the Long Term

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Global average values for the year 2000. Findings for freight transport (year 2000) include: The specific climate impact of air transport is 3 to 42 times higher, for a light truck it is 2 to 8 times higher than average truck transport. Bars represent 1 SD. Credit: ACS, Borken-Kleefeld et al. Click to enlarge. Jens Borken-Kleefeld.

Global 225