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UGA study finds black carbon aerosols from GDI engines will worsen public health, climate; need for GPFs

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in model year 2008 to 51% in model year 2018. Consequently, GDI engines emit larger amounts of BC compared to PFI engines, as has been confirmed by several laboratory studies. A strong absorber of solar radiation, black carbon exhibits significant climate warming properties. The EPA projects 93% of vehicles in the U.S.

Climate 348
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Study suggests economic stagnation no excuse for inaction on climate

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Results from a new study by researchers from the Universities of Bristol and Cambridge in the UK has suggest that the social cost of carbon dioxide is higher in a low economic growth world. A paper on the study was published in the journal Nature Climate Change. Nature Climate Change doi: 10.1038/nclimate1935.

Climate 247
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Satellite study suggests California clean air regulations working to reduce PM2.5 emissions in state

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The open-access study, which focused on the four major components of PM 2.5 This study is the first attempt to use the Multi-angle Imaging SpectroRadiometer (MISR) aerosol sensors aboard NASA’s Terra satellite to predict PM 2.5 The MISR instrument used in the study was initially designed to help understand Earth’s climate.

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Study finds 12-30% fuel consumption gap between certified and real-world use in China

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A team from the Innovation Center for Energy and Transportation (iCET) reports that while average certified fuel consumption (FC) decreased by 15% between 2008 and 2017, real-world FC remained unchanged, resulting in a fuel consumption gap increase from 12% to 30%. The paper is published in the journal Energy Policy. —Dror et al.

China 278
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Studies find global COVID-19 lockdowns have significantly reduced PM2.5 and NO2 pollution, but ozone up

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Two new studies in AGU’s journal Geophysical Research Letters find nitrogen dioxide pollution over northern China, Western Europe and the US decreased by as much as 60% in early 2020 as compared to the same time last year. In addition to nitrogen dioxide, one of the new studies finds PM 2.5 Grey areas indicate no valid data.

Ozone 291
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NOAA: North American 2008 Cooling Attributed to Natural Causes

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A paper on the study will be published 8 December in the journal Geophysical Research Letters. —Judith Perlwitz, lead author of the study and a researcher with the Cooperative Institute for Research Environmental Sciences, and NOAA Earth System Research Laboratory. Credit: NOAA. Click to enlarge. —Judith Perlwitz.

2008 170
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ICCT: IMO committee agrees to establish first climate framework for international shipping

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This strategy, which represents the first global climate framework for shipping, includes quantitative GHG reduction targets through 2050 and a list of candidate short-, mid-, and long-term policy measures to help achieve these targets. Encouraging technical cooperation and capacity-building activities, as appropriate.