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Obama Administration withdraws proposed rulemaking on strengthened ozone standards

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In a statement released this morning, President Barack Obama said he has requested that US Environmental Protection Agency (EPA) Administrator Lisa Jackson withdraw the agency’s draft Ozone National Ambient Air Quality Standards (NAAQS) rulemaking. Earlier post.) National Ambient Air Quality Standards (NAAQS).

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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.

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EPA Climate Change Adaptation Plan sees likely increase in tropospheric ozone, with more difficulty in attaining NAAQS in many areas

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Among the many climate-related vulnerabilities that can impact its mission, the US Environmental Protection Agency (EPA) cites a likely increase in tropospheric ozone pollution as potentially making it more difficult to attain National Ambient Air Quality Standards ( NAAQS ) in many areas with existing ozone problems.

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Study: 2/3 of aviation climate impact due to emissions other than CO2

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The study was published in the journal Atmospheric Environment. This new study is based on a thorough review of a decade of research on aviation emissions. Wilcox (2020) “The contribution of global aviation to anthropogenic climate forcing for 2000 to 2018,” Atmospheric Environment doi: 10.1016/j.atmosenv.2020.117834.

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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.]. Eutrophication of non-marine aquatic environments [kg N-eq.]. Eutrophication of non-marine aquatic environments [kg P-eq.]. Land occupation in an urban environment [m 2 / year]. Toxicity of marine aquatic environments [kg 1,4-DC-eq.]. in review).

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UN Review of Recent Climate Research Concludes That Impacts Of Climate Change Coming Faster Than Anticipated

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The report released by the United Nations Environment Programme (UNEP), entitled Climate Change Science Compendium 2009 , highlights new research that identifies some events thought likely to occur in longer-term time horizons as already happening or set to happen far sooner than had previously been thought. Source: Climate Change Compendium.

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EPA Administrator Reinstates Role of Staff Paper in Reviewing National Ambient Air Quality Standards

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EPA Administrator Lisa Jackson has reinstated the role of a key policy document created by agency scientists (the Staff Paper) that contains staff analyses of options for the administrator to consider when setting National Ambient Air Quality Standards (NAAQS) to protect human health and the environment. The new NAAQS review process.

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