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California ARB releases final version of proposed update to Climate Change Scoping Plan; LEV IV

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the final version of the proposed First Update to the Climate Change Scoping Plan (First Update). Achieving our long-term climate goal and 2032 ozone standards will require a much deeper penetration of ZEVs into the fleet. The California Air Resources Board (ARB) has released. The draft version was released in February.

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Northwestern/Princeton study explores air quality impacts of aggressive conversion to EVs

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This despite evidence that suggests air pollution impacts from the transportation sector exceed those from greenhouse gases. … Thus to fully account for the complexity of changes to air pollution chemistry, emission changes should be used to drive a chemical transport model (CTM). —Schnell et al. Seasons and times of day.

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International study of role of soots impact on Arctic climate

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Scientists from the US, Norway, Russia, Germany, Italy and China are participating in a study examining the potential role of black carbon, or soot, on the rapidly changing Arctic climate. The Arctic climate is changing faster than some scientists expected. For the first time, a PMEL black carbon sensor will also be aboard the Mantas.

Climate 199
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Report argues advanced HD natural gas vehicles foundational for California to hit air and climate goals; near zero-emission potential

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Compared to the 2010 “Business as Usual” scenario—which includes all adopted emission control measures for the South Coast—NO x levels must be reduced by 65% and by 75% to meet the 2023 and 2032 ozone standards, respectively. California’s Climate Protection Strategies do not help meet NAAQS Standards. Click to enlarge.

Climate 257
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Study Finds On-Road Transportation Sector the Greatest Net Contributor to Atmospheric Warming Now and in Mid-Term; Power Sector Takes the Lead by 2050

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A new study by led by Nadine Unger at NASA’s Goddard Institute for Space Studies (GISS) that analyzes the net climate impacts of emissions from economic sectors rather than by individual chemical species has found that on-road transportatation is and will be the greatest net contributor to atmospheric warming now and in the near term.

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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. The University of Bremen is the scientific base of the international project known as EMeRGe (Effect of Megacities on the transport and transformation of pollutants on the Regional and Global scales).

Emissions 268
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US Climate Action Report to UN Projects 4% Growth in Total US GHG Emissions to 2020

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while the US GDP is projected to grow by 40%, according to the fifth National Communication on US climate change actions submitted by the US Department of State to the United Nations Framework Convention on Climate Change. The report projects that transportation-related CO 2 emissions will drop 1.5% to 7,416 Tg CO 2 Eq.,

Climate 199