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Reducing emissions of black carbon soot and ground-level ozone would quickly make a considerable dent in the climate change problem and would also contribute to public health and protect crop yields, according to an essay in the September/October issue of Foreign Affairs. Besides a danger to breathe, ozone lowers crop yields.
In early 2013, the Chinese government declared a war on air pollution and began instituting stringent policies to regulate the emissions of PM 2.5. Cities restricted the number of cars on the road, coal-fired power plants reduced emissions or were shuttered and replaced with natural gas. Over the course of five years, PM 2.5
Annual average concentrations of fine particulates from US sources of combustion emissions from (a) electric power generation; (b) industry; (c) commercial and residential sources; (d) road transportation; (e) marine transportation; (f) rail transportation; (g) sum of all combustion sources; (h) all sources. Source: MIT. Click to enlarge.
Relying more on natural gas would reduce emissions of carbon dioxide, but it would do little to help solve the climate problem. The burning of coal releases more carbon dioxide than other fossil fuels, as well as comparatively high levels of other pollutants, including sulfur dioxide, nitrogen oxides, and particles such as ash.
Unlike exhaust from burning coal and gas that contains CO 2 , burning hydrogen emits only water vapor and oxygen. Hydrogen is not a greenhouse gas, but its chemical reactions in the atmosphere affect greenhouse gases such as methane, ozone, and stratospheric water vapor. Sand et al.
There was no significant difference in the profiles of total carbonyl emissions between CFT and DF. However, the use of CFT resulted in a remarkable reduction in carbonyl emissions in comparison with using DF. lower ozone formation potential of the carbonyl compounds present than DF under the identical operating conditions.
Fast action on pollutants such as black carbon, ground-level ozone and methane may help limit near term global temperature rise and significantly increase the chances of keeping temperature rise below 2 °C (3.6 °F)—and emission reduction potential. ventilation air from coal mines. for 2030 and beyond. Source: UNEP.
Black carbon and tropospheric ozone are harmful air pollutants that also contribute to climate change. Reducing black carbon and tropospheric ozone now will slow the rate of climate change within the first half of this century, the study said. Click to enlarge. °C (within a likely range of 0.2-0.7
Ozone pollution across the continental United States will become far more difficult to keep in check as temperatures rise, according to new work led by the National Center for Atmospheric Research (NCAR). Ozone formation. Scenario A2 and RCP 8.5. The RCP 8.5
Researchers at the University of Colorado, Boulder and the National Renewable Energy Laboratory (NREL) modeled the emissions impact had plug-in hybrid electric vehicles (PHEVs) replaced light duty gasoline vehicles in the Denver, Colorado area in summer 2006. VOC emissions would have been reduced by 57 tpd. For other areas, where PM2.5
A study by an international team of researchers, led by Drew Shindell of NASA’s Goddard Institute for Space Studies (GISS) in New York City, has identified 14 measures targeting methane and black carbon (BC) emissions that could reduce projected global mean warming ~0.5°C °F) by 2050, as well as improving human health and agriculture.
In its recently released Inventory of US Greenhouse Gas Emissions and Sinks: 1990 – 2011 ( earlier post ), the US Environmental Protection Agency (EPA) reported that methane (CH 4 ) emissions from the field production of natural gas have declined by 36% from 2007 to 2011 (from 83.1 CH 4 emissions represented 8.8%
Poor women and children pay a heavy price from indoor air pollution since they spend more time at home breathing in smoke and soot from leaky coal and wood cook stoves. million deaths in 2012 in households cooking over coal, wood and biomass stoves. Ozone is a major factor in asthma morbidity and mortality. g/m 3 8-hour mean.
Exposure to ozone, long associated with impaired lung function, is also connected to health changes that can cause cardiovascular disease such as heart attack, high blood pressure and stroke, according to a new study of Chinese adults. The findings associated ozone exposure with markers of platelet activation and increased blood pressure.
New airborne measurements downwind from an Archer Daniels Midland fuel ethanol plant in Decatur, Illinois, show that ethanol emissions are 30 times higher than government baseline estimates. VOCs and nitrogen oxides react with sunlight to form ground-level ozone, the main component of smog. That is where this study fits in.
A new study by researchers at MIT has found that factoring the non-CO 2 combustion emissions and effects into the lifecycle of a Synthetic Paraffinic Kerosene (SPK) aviation fuel can lead to a decrease in the relative environmental merit of the SPK fuel compared to conventional jet fuel. Aviation climate change impacts pathway.
For example, states in the western US (WUS) generally produce a larger fraction of their electricity from renewable and/or “emission-free” sources (i.e., coal, oil, natural gas, and biomass). Among the findings: Summer surface ozone (O 3 ) decreases in most locations due to widespread reductions of traffic NO x emissions.
Emission standard. Photochemical Ozone Creation Potential (kg Ethene equivalent). Quantifies the production of pollutant ozone (? to ozone layer), the results of the reaction of sunlight on NO x and volatile organic compounds. water, and non-renewable energies (crude oil, coal.) emissions). emissions).
The European Community’s air pollutant emission inventory report released by the European Environment Agency finds that in 2007, sulphur oxides (SO x ) emissions were down by 72 % from 1990 levels. EU-27 emissions of all four pollutants were lower in 2007 than in 2006.
A) shows the base case peak concentrations for O 3 (ozone), ClNO and HCl in parts-per-billion by volume (ppbv). (B) Under extreme circumstances, this previously unknown chemistry could account for up to 40 parts per billion (ppb) of ozone; the current US Environmental Protection Agency (EPA) 8-hour average standard is 75 ppb.
Although China and India remain the world’s largest consumers of coal, a new University of Maryland-led study found that China’s sulfur dioxide emissions fell by 75% since 2007, while India’s emissions increased by 50%. The rapid decrease of sulfur dioxide emissions in China far exceeds expectations and projections.
Contributions of regions to total life cycle emissions for three fuels (µg per vehicle-mile traveled per km 2 land area). Dashed lines show US average emissions. Associated tailpipe emissions alone account for 40?60% Credit: ACS, Tessum et al. Click to enlarge. —Tessum et al.
and that due to ambient ozone pollution increased by 139.2%. These increases in deaths from ambient air pollution reflect increasing emissions from cars, trucks, and buses, as well as the widespread use of coal to generate electricity in India.
The US Environmental Protection Agency (EPA) is proposing regulations employing the “good neighbor” provision of the Clean Air Act to reduce interstate transport of upwind state emissions from power generation that contribute to air quality problems in downwind states. NO x emissions would drop by 52%.
Decomposition of the decadal change in total global CO 2 emissions from fossil fuel combustion by four driving factors; population, income (GDP) per capita, energy intensity of GDP and carbon intensity of energy. Total anthropogenic GHG emissions were the highest in human history from 2000 to 2010 and reached 49 (±4.5) IPCC WG III.
Among the non-CO 2 pollutants are hydrofluorocarbons (HFCs), methane, tropospheric ozone, and black carbon soot. Ramanathan and Victor highlight the importance of aggressively reducing CO 2 emissions, but note that the road ahead will be long, difficult, and expensive, and that “in the meantime, a fast-action plan is needed.”
In particular, the study led by Drew Shindell found that methane emissions have a larger warming impact due to those interactions than accounted for in current carbon-trading schemes or in the Kyoto Protocol. And hydroxyls drive long chains of reactions involving other common gases, including ozone. Shindell et al.
and tropospheric ozone. This assessment also tracks exposure to household air pollution from burning fuels such as coal, wood, or biomass for cooking. Ozone accounted for about 472,000 early deaths in 2017. Numbers of deaths attributable to air pollution in countries around the world in 2017. Ambient PM 2.5 accounted for 2.9
A new report from the National Research Council examines and, when possible, estimates, “hidden” costs of energy production and use—such as the damage air pollution imposes on human health—that are not reflected in market prices of coal, oil, other energy sources, or the electricity and gasoline produced from them.
Soot—black and brown particles that absorb solar radiation—comes from two types of sources: fossil fuels such as diesel, coal, gasoline, jet fuel; and solid biofuels such as wood, manure, dung, and other solid biomass used for home heating and cooking around the world. He also found that soot emissions kill more than 1.5 Dessler et al.,
Ozone, another important component of outdoor air pollution, whose levels are on the rise around the world, contributed to 234,000 deaths from chronic lung disease. Population-weighted seasonal average ozone concentrations in 2016. coal, wood, and dung) for cooking and heating. coal, wood, and dung) for cooking and heating.
The EPA has dismissed two panels of outside scientists that advised the agency on particulate matter and ground-level ozone, which have been linked to smog and respiratory problems.
A ban on certain domestic heating fuels, such as coal, also leads to improved air quality in low-income zones. Wealthier regions, including large cities, tend to have on average higher levels of nitrogen dioxide (NO 2 ), mostly because of the high concentration of road traffic and economic activities.
Additionally, the study found that the population-weighted mean concentrations of ozone increased globally by 8.9% An additional 217,000 deaths were attributable to long-term ozone exposure. and ozone (O 3 ). . … and ozone (O 3 ). Somewhat similar patterns were also evident for ozone.
Energy consumption and GHG emissions per PKT (passenger kilometer travelled). Inventorying criteria air pollutants showed that vehicle non-operational components often dominate total emissions. Life-cycle criteria air pollutant emissions are between 1.1 The vehicle operation components are shown with gray patterns.
of all global deaths) caused by outdoor fine particulate air pollution and an additional 215,000 deaths from exposure to ozone. In China, burning coal is the biggest contributor to poor air quality. Our study highlights the urgent need for even more aggressive strategies to reduce emissions from coal and from other sectors.
Markey of the Energy and Environment Subcommittee on Tuesday released a draft of far-reaching energy and climate legislation that targets job creation, promotes renewables and energy efficiency, and places limits on emissions of greenhouse gases. Any Federal vehicle standards are to achieve at least the results of the California standards.
Up there, 10 to 50 kilometers above the Earth’s surface, ozone molecules absorb the sun’s ultraviolet light, protecting life far below. Even less is understood about the potential risks to people and the environment—could the particles deplete the ozone layer, for example, or significantly alter the weather? Not everyone agrees.
Numerous studies compiled by the Environmental Defense Fund show that in addition to harming the community, diesel school buses also “self-pollute” with emissions entering the bus cabin, to the point that “ the interior cabin of a diesel bus is five times higher ” than outside the bus.
According to Forbes , studies have found that solar and wind power is often cheaper than power from fossil fuels, even without financial assistance, and their daily operations undercut even the most cost-effective coal plants. Some of the effects of pollution, such as depleting the ozone layer, affect both environmental and human health.
Highly Ranked catachip @ Apr 19th 2009 4:57PM @ Elodie As long as the electricity is generated from wind, hydro, solar, or nuclear then there are zero emissions. That being said, even a car that derives its energy from coal power plants would be far more clean. 7, 1990) Emissions from cars dwarfs that from power plants.
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