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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.

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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). Preliminary global mean CO 2 concentrations in February 2014 were 398.06 Ozone formation. Scenario A2 and RCP 8.5.

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Critical review finds actual measurement data on segments of natural gas lifecycle sparse or lacking

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Between 2000 and 2011, the number of producing gas wells in the US increased by 50%, reaching 514,637. Air emissions from the natural gas life cycle include greenhouse gases, ozone precursors (volatile organic compounds and nitrogen oxides), air toxics, and particulates. Moore et al. Christopher W. Branosky, E.; Stevens, A.;

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California Air Resources Board posts revised draft of strategy to reduce “Super Pollutants”

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California has already cut anthropogenic black carbon emissions by more than 90% since the 1960s, and existing measures are projected to cut mobile source emissions by 75% and total anthropogenic emissions by nearly 60% between 2000 and 2020. SLCP emission reductions will support achieving these targets.

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California ARB Seeks Further Reductions of Diesel Emissions at State Rail Yards

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In 2000, the ARB established California’s Diesel Risk Reduction Plan, which aims to reduce diesel emissions to 85% below 2000 levels by 2020. NO x helps create ground-level ozone, or smog. BNSF has been operating four liquefied natural gas yard locomotives in downtown Los Angeles since the mid-1990s.

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