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Study Concludes Warming Climate Will Increase Ozone Levels in Major California Air Basins; Climate Change and Regional Air Quality Are Intertwined Problems

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Illustration of projected ozone changes in the South Coast region due to climate change in 2050. Areas in orange and red could see ozone concentrations elevated by 9 to 18 parts per billion. Our study reveals that climate change and regional air pollution are intertwined problems.

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UCI-led study finds California’s strict air quality regulations have helped farmers

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They found that reductions in ground ozone during this 35-year period resulted in $600 million in increased production annually by the early 2010s. Another difference is that some grains can be annually modified to withstand greater heat and even higher ozone levels in the air. An open-access paper on the work appears in Nature Food.

Ozone 186
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Study Finds Asian Monsoon Carries Pollution Into the Stratosphere

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Arrows denote winds at this level derived from meteorological analysis, showing that the HCN maximum is linked with the upper tropospheric Asian monsoon anticyclone. This could explain satellite measurements showing high levels of stratospheric ozone, water vapor and other chemicals over Asia during summer. Source: Randel et al.,

Pollution 246
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HALO research aircraft measuring the emissions of megacities in EmeRGe project

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However, emissions do not just remain in conurbations; particles and gaseous pollutants can be transported thousands of kilometers by the wind. Previously, the researchers studied European conurbations from the air. Air quality in major cities is a critical issue, especially with regard to road traffic and residents’ health.

Emissions 268
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House Chairmen Waxman, Markey Release Draft of Energy and Climate Legislation; Among the Many Provisions Are Cap-and-Trade, Harmonization of CAFE and California Vehicle Regulations, and Low Carbon Fuel Standard

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power from renewable sources—wind, solar, geothermal, biomass or landfill gas, hydropower, and marine and hydrokinetic—for retail electricity suppliers beginning at 6% in 2012 and gradually rising to 25% in 2025 and continuing at that level through 2039. The draft establishes a Renewable Portfolio Standard—i.e., Clean Air Act Exemptions.

Climate 186
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The Why, How, and Maybe Not of Geoengineering

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Eliza Strickland: Man-made climate change is already reshaping our planet, and carbon emissions aren’t coming down fast enough to stave off real disaster in the decades to come. It’s often called geoengineering in the popular press, but the preferred term is climate intervention. Transcript. That’s called stratospheric warming.

Climate 67
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National Academies Report Examines Hidden Cost of Energy Production and Use in US; Estimates $120B in 2005

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That figure does not include damages from climate change, harm to ecosystems, effects of some air pollutants such as mercury, and risks to national security, which the report examines but does not monetize. Climate-related monetary damages range from 0.1 cents to 10 cents per kilowatt-hour, based on previous modeling studies.

2005 246