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NUS researcher links air pollution to increased residential electricity demand

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Understanding what drives energy demand across the socioeconomic distribution of Singapore households can provide insight on the future energy demand of urban populations in the region’s cities as incomes rise. This is important for policymakers when forecasting and influencing future emissions paths in the context of climate change.

Pollution 275
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Black carbon is a much larger cause of climate change than previously assessed; about twice previous estimates, and 2/3 the effect of CO2

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The report’s best estimate of direct climate influence by black carbon is about a factor of two higher than most previous work. This includes the estimates in the 2007 Intergovernmental Panel on Climate Change (IPCC) Assessment, which were based on the best available evidence and analysis at that time.

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Study finds megacity traffic soot can reach high altitudes and be transported over long distances, contributing to global warming

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results indicate that traffic is the dominating source of BC and particulate air pollution in the metropolitan area of La Paz/El Alto. Soot particles from combustion processes significantly contribute to air pollution because they contain heavy metals and polycyclic aromatic hydrocarbons which are toxic.

Bolivia 247
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Study: countries seeking to cut CO2 emissions must get a handle on city-level emissions

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Countries seeking to meet Paris Agreement targets on CO 2 emissions must get a grip on the amount of pollution produced at city level, according to a new open-access study published in S cience Advances by an international team of researchers from Europe and China. —Prof Guan. 6, eaaq0390 doi: 10.1126/sciadv.aaq0390.

Emissions 210
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Cummins CTO John Wall receives California’s premier air quality award

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Haagen-Smit Clean Air Awards are given annually to individuals who have made significant lifetime contributions toward improving air quality and climate change science, technology and policy, furthering the protection of public health. Smith, professor of global environmental health, University of California Berkeley.

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Researchers present new explanation for the long-range transport of PAH pollutants

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When airborne particles (green) form before PAHs adhere, both the pollutants and particles dissipate quickly, as shown in the top row. But when the particles form in the presence of pollutants, which is what likely happens in nature, the longer-lasting particles enable the long-range transport of the pollutants (bottom).

Pollution 244
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US and UK researchers report direct measurement of key atmospheric reactant; more rapid formation of secondary aerosols

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Now, researchers from Sandia National Laboratory’s Combustion Research Facility, the University of Manchester and the University of Bristol report in a paper in Science the first direct kinetics measurements made of reactions of any gas-phase Criegee intermediate, in this case formaldehyde oxide (CH 2 OO). Carl Percival. Welz et al.

Ozone 268