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In a recent open-access paper published in ACS’ Environmental Science & Technology , researchers from the University of York report that alcohols in windshield washer fluid account for a larger fraction of real-world vehicle emissions than previous estimates have suggested. —Cliff et al.
Shipping emissions form a significant part of the commodity supply chain’s carbon footprint, particularly for those commodities reliant on the mass transport of low-grade ores and concentrates. Roskill has analyzed the trend in carbon intensity of shipping using spodumene concentrate as an example. Regulatory background. Background Data.
I recently read a brilliant book, Malcolm Gladwells, Revenge of the Tipping Point that alerted me to the fact that just five per cent of the passenger vehicles on the road produce more than half of all the pollution in the air. Pollution would drop by the same amount as the 10 per cent shift. Ford Falcon.
Consumer products such as shampoo, cleaning products and paint now contribute as much to emitted volatile organic compounds (VOCs) in cities as tailpipe emissions from vehicles, according to a new study led by NOAA. Total VOC emission factors for end uses of petrochemical sources in the study. —McDonald et al.
Living in a more polluted area is associated with a greater likelihood of having glaucoma, a debilitating eye condition that can cause blindness, according to a new UCL-led study in the UK. Particulate matter exposure is one of the strongest predictors of mortality among air pollutants. micrometres in diameter, or PM 2.5 ).
Scientists from UCLA’s Fielding School of Public Health have found a possible link between exposure to traffic-related air pollution and several rare childhood cancers. Pollution exposure was estimated for the area around each child’s home for each trimester of their mother’s pregnancy and during their first year of life.
Regulated emissions for all test fuels over the cold-start and hot-start LA92 cycles. The emissions of CO 2 for the high-aromatics E10 were higher than the Tier 3 E10, E30, and E78 blends. Their paper is published in the ACS journal Energy & Fuels. The study found that higher ethanol blends—i.e., —Yang et al. 8b02206.
pollution—even at levels deemed safe—to an increased risk of diabetes globally. The main drivers of diabetes include eating an unhealthy diet, having a sedentary lifestyle, and obesity, but the new research indicates the extent to which outdoor air pollution plays a role. Louis Health Care System links PM 2.5 million U.S.
Based on their findings in a new study, researchers from the University of Washington and the University of Minnesota suggest that modifying urban form—as a means of affecting motor vehicle usage—may be a strategy to mitigate urban air pollution. Their paper appears in the ACS journal Environmental Science & Technology.
Although large emissions cuts are urgently needed to achieve global climate goals, it may take decades before we can measure the effect of the reductions on global temperature evolution, according to a new study by researchers at Norway’s CICERO Center for International Climate Research. —Bjørn Samset.
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. Pollution from ships creates lines of clouds that can stretch hundreds of miles. The calculated concentration of cloud droplets without emissions along the shipping route (yellow line).
A new report by the UK’s Office for National Statistics (ONS) finds that greenhouse gas (GHG) emissions from road transport in the UK rose by 6% from 1990 to 2017. The increase—albeit lower than the increase in road traffic—highlights the significant challenge in reducing emissions from road transport, the report says.
The California Air Resources Board (CARB) announced that greenhouse gas emissions in California in 2016 fell below 1990 levels for the first time since emissions peaked in 2004—a reduction roughly equivalent to taking 12 million cars off the road or saving 6 billion gallons of gasoline a year.
A new statistical method developed by researchers at KAUST (King Abdullah University of Science and Technology, Saudi Arabia) can detect abnormal ozone levels within large bodies of monitored data. Sun and her colleagues also hope to apply their data analysis techniques to dust pollution, another major environmental issue in Saudi Arabia.
Despite the economic effects of the global financial crisis (GFC), carbon dioxide emissions from human activities rose 2% in 2008 to an all-time high of 1.3 Other main findings of the study include: CO 2 emissions from the burning of fossil fuels have increased at an average annual rate of 3.4% over the previous seven years.
According to Agah, a renowned researcher in chip-scale gas chromatography and Office of the Vice President for Research and Innovation Faculty Fellow, the development of effective strategies for reducing occupational exposure to pollutants requires accurate, time-resolved measurement of exposure.
Traffic is a major source of harmful pollutants; daily peak exposures tend to occur near roadways or while traveling—or being stuck—on them. That gave them rare, real-world look at pollutant exposure. With windows closed, the pollutants took longer to enter the vehicle cabin, but also longer to exit it.
The California Air Resources Board (CARB) has released the results of a multiyear study evaluating exhaust emissions from the use of California Reformulated Gasoline (CaRFG) that contains 15 volume percent ethanol (E15). The vehicle test matrix had provisions for five vehicles on each emissions standards category (i.e.,
Effects of changes in the average lifespan of ordinary passenger cars newly registered between 1990-2000 on total induced CO 2 emissions in 2000. Conversely, encouraging shortened vehicle lifetime via vehicle replacement schemes can result in higher total-induced greenhouse gas emissions, the authors found. Credit: ACS, Kagawa et al.
We used statistical models to capture whether there are significant associations between ozone exposure and these outcomes. While the study finds an association between air pollution and atherosclerosis, researchers aren’t clear on why. —Meng Wang. Ozone, however, is much trickier, Wang notes. —Meng Wang. Meng Wang, Paul D.
Air pollution is a ubiquitous problem and comprises gaseous and particulate matter (PM). However, the majority of such models represent high levels of exposure and are not representative of the exposure levels in less polluted countries, such as Australia. To understand the mechanisms involved, animal models are often used.
Statistical analysis was carried out on the data, in order to calculate peak and high ozone levels and to interpret trends and changes in the data. TOAR has created a large publicly available database which also includes a complete set of statistics and graphical downloads. Source: University of Leicester. Click to enlarge.
Results of GIS statistical analysis for CO 2 : (a) eGrid subregion emissions factors (kg CO 2 /kWh), (b) average emissions factor for each district (kg CO 2 /kWh), (c) coefficient of variation of CO 2. emissions factor by district, and (d) difference between eGrid subregion emissions factor and US average emissions factor, 0.65
Exposure to air pollution increases the risk of developing insulin resistance as a pre-diabetic state of type 2 diabetes, according to a new study by scientists of Helmholtz Zentrum München, in collaboration with colleagues of the German Center for Diabetes Research (DZD). The researchers reported these results in the journal Diabetes.
NO x emissions have not been decreasing as expected in recent years (2011–2015) when comparing top-down estimates from satellites and surface NO 2 measurements to the trends predicted from the US Environmental Protection Agency’s emission inventory data, according to a new study by an international team of researchers.
Earlier this week, member states in the European Commission’s Technical Committee - Motor Vehicles (TCMV) gave support to the EC proposal for Real Driving Emissions (RDE) testing requirements. Broadly, the approved RDE proposal includes: The use of portable emission measurement systems (PEMS) and not-to-exceed (NTE) regulatory concepts.
A new study quantifying emissions from a fleet of gasoline direct injection (GDI) engines and port fuel injection (PFI) engines finds that the measured decrease in CO 2 emissions from GDIs is much greater than the potential climate forcing associated with higher black carbon emissions from GDI engines.
The mode of travel you take on your daily work commute can make a big difference in your exposure to air pollution, according to a new study by researchers at the California Air Resources Board (ARB). Boxplot of average PM 2.5 , BC, UFP, and LDSA [lung deposited surface area] concentrations for each commute mode.
The annual assessment of global greenhouse gas (GHG) emissions by the JRC and the Netherlands Environmental Assessment Agency (PBL) confirms that CO 2 emissions have stalled for the third year in a row. Emissions from international transport (aviation and shipping) contribute another 3% to the total global GHG emissions.
In connection with the effects of the COVID-19 pandemic, satellite measurements made headlines showing how much the air pollutant nitrogen dioxide (NO 2 ) had decreased in China and northern Italy. The air quality fluctuates, in some cases very strongly, due to different emissions and the influence of the weather.
It is very likely that highly efficient “fully flexible” engines with hybridized solutions will be a big part of sought-after efficiency improvements, as well as emission/GHG reductions. mg/km of particulates), reaching values around 10 times the emission from the engine (5?mg/km). —Reitz et al. g/bhp-h or 15–20?mg/km).
This potential leap in destructiveness and pollution—mainly from an increase in wildfire frequency—is forecast by computer models calculating impacts of moderate global warming on western US wildfire patterns and atmospheric chemistry. Jennifer Logan. Their new work could help policymakers gauge how severe that penalty might become.
The Houston-Galveston Area Council (H-GAC) has partnered with the Center for Transportation and the Environment (CTE) and Smith Electric Vehicles Corporation (Smith Electric) to reduce vehicle emissions from delivery trucks in the Houston-Galveston region.
The China Energy Group of the US Department of Energy’s (DOE’s) Lawrence Berkeley National Laboratory (Berkeley Lab) recently released the eighth edition of the China Energy Databook —the most comprehensive publicly available resource known to exist covering China’s energy and environmental statistics. Click to enlarge.
In the first empirical study using satellite measurements to explore the relationship between urban form and air pollution, a team from the University of Minnesota has found that cities with highly contiguous built-up areas have, on average, lower concentrations of nitrogen dioxide (NO 2 , a key component of urban air pollution).
Expanding a network of community air-quality monitors operated by Casa Familiar in San Ysidro, one of 28 community-based organizations and tribes statewide receiving grants to engage residents in efforts to reduce local air pollution. million metric tons, roughly equivalent to taking eight million cars off the road for a year.
A statistical regression revealed that the total monetary benefit to consumers from state incentives significantly positively correlates with BEV sales when all 50 states and the District of Columbia are included. The ICCT team first monetized the direct incentives by evaluating the effective benefit available to consumers—e.g.,
Researchers at the University of California, Irvine and other institutions have conducted a statistical analysis of pollution exposure and yields from 1980 to 2015 on a key sector making up about 38% of the state’s total agricultural output: perennial crops such as almonds, grapes, nectarines, peaches, strawberries and walnuts.
The US National Academy of Sciences estimates that fossil fuel subsidies cost the United States $120 billion in pollution and related health care costs every year. Overall, carbon dioxide emissions would be reduced by 4.7% But these hidden costs (externalities) are not reflected in fossil fuel prices. in 2020 and 5.8%
Divergence of real-world CO 2 emissions from manufacturers’ type-approval CO 2 emissions for various on-road data sources, including an average estimate for private and company cars as well as all data sources. In total, these sources furnish fuel consumption and CO 2 emission data from more than half a million vehicles.
Vastly expanding sugarcane production in Brazil for conversion to ethanol could reduce current global CO 2 emissions by as much as 5.6%, according to a new study by an international team led by researchers from the University of Illinois. of net CO 2 emission globally relative to data for 2014. Gigatons yr −1. This would displace 3.8–13.7%
The growth of global industrialization, increasing demand on energy resources and rising carbon emissions are deepening the need for energy infrastructure that is increasingly green, distributed, flexible, and resilient. Renewable UK, Wind Energy Statistics Explained, available at: [link] , accessed 12 November, 2020. 1 ] Swart, R.
Attitudes towards measures to reduce car emissions. The report for the Department for Transport is based on a survey module included in the Office for National Statistics’ Opinions (Omnibus) survey which has been carried out each August since 2006. Tags: Emissions Europe Policy. Source: DfT. Click to enlarge.
A Georgia Tech City and Regional Planning study on climate change concludes that “smart growth” combined with the use of hybrid vehicle technology could reduce cities’ carbon dioxide (CO 2 ) emissions significantly by 2050. Stone et al. Stone et al.
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