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News and Opinion

Coverage of pollutant emissions since May 13, 2020.

WHO says new lower air pollution guidelines could save millions of lives

"...“What matters most is whether governments implement impactful policies to reduce pollutant emissions, such as ending investments in coal, oil and gas and prioritizing the transition to clean energy, said Dr. Aidan Farrow, a Greenpeace international air pollution scientist who is based at Britain's University of Exeter. “The failure to meet the outgoing WHO guidelines must not be repeated,” he said in a statement..."

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Atmospheric acidity impacts oceanic ecology

"...Prof Alex Baker, professor of marine and atmospheric chemistry in UEA's School of Environmental Sciences, is the lead author. He said: "Human emissions of pollutants have caused significant changes to the acidity of the atmosphere, leading to well-known environmental impacts such as acid rain..."

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Long-term urban emissions data show a decrease in high-income countries

"...The results show that urban centres make a large contribution to global air pollutant and CO2 emissions. Expanding the definition of urban areas to include suburbs, roughly 50% of the global emissions take place in around 1% of the global surface. When all urban areas and not only urban centres are included, around 70-80% of global emissions are included..."

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A diesel-powered bus to be turned to hydrogen. Transdev's project in Normandie

"...Studies will be also carried out in order to determine the environmental benefits and amount of pollutant emissions over the entire H2 cycle, from the production of hydrogen to its consumption in operation (study from well to wheel)..."

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Ghosn testifies to French investigators in Renault probe

"...BEIRUT -- For hours, French investigators on Thursday questioned fugitive former auto magnate Carlos Ghosn in the Lebanese capital as a witness in a probe over Renault's pollutant emissions, according to two Lebanese officials..."

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Environmental concerns propel research into marine biofuels

"...Upon examining different types of fuels for their ability to reduce emissions of greenhouse gases and air pollutants, the researchers found biofuels produced entirely from biomass offer much higher reductions in life-cycle greenhouse gas emissions--from 67% to 93% less than HFO. Biomass-derived fuels also are mostly free of sulfur and exhibit reductions in criteria air pollutant emissions such as particulate matter..."

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Air pollution fell sharply during lockdown

"...The far-reaching mobility restrictions at the beginning of the Corona pandemic in March 2020 created a unique situation for atmospheric sciences: "During the 2020 lockdown, we were able to directly investigate the actual effects of drastic traffic restrictions on the distribution of air pollutants and on the emission of climate gases," says Innsbruck atmospheric scientist Thomas Karl. With his team, he has now published a detailed analysis of air quality during the first lockdown in the city of Innsbruck, Austria, in the journal Atmospheric Chemistry and Physics. "We find significantly greater decreases of air pollutants than of carbon dioxide, for example," the researcher says, summarizing the results..."

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Pollutants rapidly changing the waters near Ieodo Island

"...The Northeast Asia region, including Korea, China, and Japan, has seen an increase of nitrogen pollutants because of the rapid population growth and industrialization in modern times. As the nitrogen pollutant flows into the sea as a result of floods and monsoons, northeast Asian waters have experienced an unexpected massive fertilization. Many scientists have warned that these nitrogen pollutants not only increase harmful algae bloom in the coastal waters, but also lead to deterioration of water quality and changes in the formation of marine ecosystem species..."

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Climate-friendly cooling to help ease global warming

"...The Kigali Amendment to the Montreal Protocol, which entered into force in 2019, aims to phase down the consumption of HFCs by 2050. While previous agreements have resulted in improvements in the design and energy performance of, for instance, cooling equipment, the Kigali Amendment is the first to include maintaining and/or enhancing the energy efficiency of cooling technologies as an explicit goal. According to the authors of the study, which has been published in the journal Atmospheric Chemistry and Physics, there is however currently limited understanding of the potential future impacts of the Kigali Agreement on global warming and possible co-benefits from savings in electricity..."

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Waste generation by hospital emergency departments is highlighted for first time

"...Healthcare facilities in the U. S. generate 6,600 metric tons of waste each day, making them the second largest contributor to landfill waste (next to the food industry)..."

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Enhanced secondary haze by emission reduction during COVID-19 lockdown in China

"...Focusing on this air pollution issue concerned by the public and policymakers, the study, published in the journal National Science Review (18th June), reveals that a sharp emission reduction in transportation caused more secondary formation of particle by enhanced atmospheric oxidizing capacity in the eastern China, which offset the effort of primary emission reduction. This study integrated multiple observational datasets, including ambient air quality monitoring network, chemical composition measurements, and satellite retrievals, together with up-to-date emission estimation and dozens of numerical simulation experiments, to comprehensively analyze the non-linear response of air pollution to emission reduction during the COVID-19 lockdown. Dynamic economic and industrial statistics in the first two months of 2020 were collected to estimate emission reduction due to COVID-19 lockdown..."

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How particulate matter arises from pollutant gases

"...Scientists in the international research project CLOUD have now recreated the conditions that prevail in the streets of mega-cities in a climate chamber at the particle accelerator CERN in Geneva, and reconstructed the formation of secondary particulates: in the narrow and enclosed streets of a city, a local increase of pollutants occurs. The cause of the irregular distribution of the pollutants is due in part to the high pollutant emissions at the street level. Furthermore, it takes a while before the street air mixes with the surrounding air..."

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Academic Research

Recent peer-reviewed papers about pollutant emissions relevant to the latest news.

Dynamic modeling to analyze the impacts of carbon reduction policies, Iran?s electricity industry

"...Sustainable development and reducing greenhouse gas emissions require optimizing the structure of energy production as the main factor in the emission of pollutants in Iran?s electricity industry..."

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Assessment of pollutant emissions reduction potential of energy infrastructure in industrial parks of Henan Province

"...Industrial park is an area where energy consumption and pollutant emissions are concentrated, and energy infrastructure (power plants and industrial boilers) is the main consumers of energy..."

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Energy mix, technological change, and the environment

"...Second, an energy efficiency improvement provokes a ?rebound effect? above 100% (the backfire effect), resulting in a rise of pollutant emissions by increasing energy use..."

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Exploring synergistic decoupling of haze pollution and carbon emissions in emerging economies: fresh evidence from China

"...In the face of global warming, energy depletion, and air pollution, controlling greenhouse gas and air pollutant emissions has become an urgent task for an emerging economy..."

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To what extent are pollutant emission intensified by international tourist arrivals? Starling evidence from G7 Countries

"...A large volume of environmental science and pollution research has focused on the contributions of various forms of energy consumption to emissions..."

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Quantifications and predictions of sectoral pollutants emissions in Nigeria from 1980 to 2050

"...Five major sources of pollutant emissions were identified which include transportation, energy, municipal solid waste, wood fuel, and agricultural sectors..."

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Sustainable planning: the case study of the Strait of Messina ports

"...Starting from the socio-economic and environmental analysis of the territorial context managed by AdSP, the DEASP analyses all the activities carried out inside port areas and reports the energy consumptions of the concessionaries, in the way to calculate the carbon footprint and develop an environmental sustainable strategy to reduce pollutant emissions..."

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Green Technological Progress Implications on Long-Run Sustainable Economic Growth

"...The study calculated labour and capital contributions to green total factor productivity growth via the inclusion of CO2 emissions as undesirable output or private unpriced input and energy consumption that proxies for unmeasured pollutant emissions..."

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Boosting Kernel Search Optimizer with Slime Mould Foraging Behavior for Combined Economic Emission Dispatch Problems

"...Reducing pollutant emissions from electricity production in the power system positively impacts the control of greenhouse gas emissions..."

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Analysis of the characteristics of major pollutants discharged from wastewater in China?s provinces

"...Controlling the discharge of pollutants in sewage is of great importance for protecting water quality and maintaining ecological balance..."

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Effects and influence factors of regional based air pollution control mechanism: an econometric analysis

"...It is concluded that regional based air pollution control provinces have significantly achieved more reductions in air pollutant emissions than local based air pollution control provinces..."

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