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Two-year study in Canada finds large trucks disproportionately contribute to higher levels of black carbon pollution

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Researchers found that air pollution levels right beside a major trucking route within a city were close to levels seen beside Highway 401, despite the road carrying less than one-tenth of the vehicle traffic. The study is published in the ACS journal Environmental Science & Technology. Jonathan M. Shairsingh, Robert M. 8b01914.

Pollution 231
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Study measures the effect of regional change in clouds caused by ships’ emissions; masking GHG warming

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This puffy line is not just exhaust from the engine, but a change in the clouds that’s caused by small airborne particles of pollution. Satellite image taken 16 January 2018 off the coast of Europe. Pollution from ships creates lines of clouds that can stretch hundreds of miles. Michael Diamond/University of Washington.

Emissions 223
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Obama climate plan calls for new fuel economy standards for heavy-duty vehicles post-2018; cleaner fuels and investment in advanced fossil energy

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Among the transportation-related elements of US President Barack Obama’s new climate action plan, which he is outlining today in a speech at Georgetown University, is the development of new fuel economy standards for heavy-duty vehicles post-2018. Preparing the US for the impacts of climate change. Earlier post.).

Obama 249
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Global Carbon Project: Global carbon emissions growth slows, but hits record high

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The findings are outlined in three new papers published in Earth System Science Data , Environmental Research Letters , and Nature Climate Change. over 2018 emissions. —down 50% from its peak in 2005—displaced by cheaper natural gas, wind and solar power, as well as savings from energy efficiency. Peters, R.M.

Carbon 195
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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 aim is to better understand and predict the extent and impact of urban air pollution on Earth’s atmosphere. Previously, the researchers studied European conurbations from the air.

Emissions 268
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California ARB Adopts Regulation Implementing 33% Renewable Electricity Standard by 2020

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The goal of 33% renewable electricity was also a major measure in the Scoping Plan, adopted by the Board in December 2008, toward fulfilling AB 32, the requirements of California’s climate change legislation. The new regulation will be one of AB 32’s largest emission-reduction strategies.

Renewable 291
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Aerial methane survey finds a fraction of point sources responsible for more than a third of California’s methane emissions

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From August 2016 to October 2018, NASA, through a contract with the two state agencies, flew remote sensing equipment over selected portions of the state. Some methane emissions were highly intermittent, others were affected by wind, and some were too small for accurate emission rate estimation.

Emissions 236