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.

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European Parliament calls for fast action to cut non-CO2 climate forcers

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The European Parliament is calling for fast action to reduce non-CO 2 climate forcers including black carbon soot, hydrofluorocarbons (HFCs), methane, and ground-level ozone, which together are responsible for nearly half of climate forcing. A follow-up technical meeting will be hosted by Bangladesh in October, with further ministerial meetings likely in the future.

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International study identifies 14 key measures to reduce methane and black carbon emissions; reduction in projected global mean warming of ~0.5 °C by 2050

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Methane is both a potent greenhouse gas and an important precursor to ground-level ozone. Ozone, a key component of smog and also a greenhouse gas, damages crops and human health. Tropospheric ozone and black carbon (BC) contribute to degraded air quality and global warming.

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Low-lying and other vulnerable countries calling for fast action on non-CO2 global warming pollutants

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Among the non-CO 2 pollutants are hydrofluorocarbons (HFCs), methane, tropospheric ozone, and black carbon soot. Reducing tropospheric ozone can improve public health as well as agricultural productivity. In addition to the Micronesia’s proposal on near-term mitigation, there is another opportunity for climate progress in Cancun: phasing down HFCs under the Montreal Protocol ozone treaty, IGSD notes.

New international Climate and Clean Air Coalition to focus on reduction of short-lived climate pollutants

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The founding coalition partners are Bangladesh, Canada, Ghana, Mexico, Sweden, and the United States, together with the UN Environment Programme (UNEP). Integrated Assessment of Black Carbon and Tropospheric Ozone: Summary for Decision Makers.

EPA report to Congress finds a strong scientific and technical foundation for mitigating black carbon emissions

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Most of this infrared radiation passes through the atmosphere, but some is absorbed by GHG molecules like CO 2 , methane, ozone and others. Key policy-relevant scientific uncertainties related to BC. Source: EPA. Click to enlarge.