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Study finds rising temperatures increase risk of unhealthy ozone levels absent sharp cuts in precursors

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Ozone pollution across the continental United States will become far more difficult to keep in check as temperatures rise, according to new work led by the National Center for Atmospheric Research (NCAR). Ozone formation. Even short periods of unhealthy ozone levels can cause local death rates to rise. Scenario A2 and RCP 8.5.

Ozone 199
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PSI team develops web tool for consumers to compare environmental impact of passenger cars in detail

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Deterioration of the ozone layer [kg CFC-11-eq.]. The user also selects the country where the vehicles are to be used—because this differentiates the electricity mix for electric cars—as well as the year, between 2000 and 2050, when the cars will be registered. Depletion of fossil energy resources [kg oil-eq.].

Mariner 435
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Researchers suggest that air quality tests need simplifying to help reduce dangerous emissions

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They focused their comparison on techniques used in a three-dimensional model commonly used by environmental agencies to simulate ozone, particulate matter, and atmospheric acid concentrations, and develop effective emission reduction strategies. We consider this to be a “bottom-up” approach,” says Stockwell.

Emissions 170
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HEI: 95%+ of world’s population live in areas of unhealthy air

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Comparison of 2016 annual average PM 2.5 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. concentrations to the WHO Air Quality Guideline.

Pollution 218
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GISS study finds applying stricter non-CO2 vehicle emission standards worldwide would yield climate benefits in addition to major health and agricultural benefits

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million metric tons of avoided ozone-related yield losses of major food crops; $US0.6-2.4 Impacts of worldwide vehicle emissions in 2030 compared with 2000. While reductions in particulate matter tend to produce local health benefits, the scientists found health and agricultural benefits from reduced ozone disperse more widely.

Climate 231
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NASA GISS Study Finds That Methane Has an Elevated Warming Effect Due to Interactions With Aerosols

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Despite their limitations, GWPs are widely used for comparison among long-lived gases, forming the basis for worldwide political agreements on climate and carbon trading. And hydroxyls drive long chains of reactions involving other common gases, including ozone. Similar reactions influence the creation of nitrate aerosols.

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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. The different climate attributes of BC and long-lived GHGs make it difficult to interpret comparisons of their relative climate impacts based on common metrics. Source: EPA.

Congress 252