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Large improvements of air quality in China during the lockdown have been widely reported, but new research shows that two pollutants harmful to human health—fine particulate matter (PM 2.5 ) and ozone—were only slightly reduced. and ozone were only slightly reduced or barely affected.
A team from Duke University in the US and University of York in the UK have utilized a novel method to estimate long-term ozone exposure and previously reported epidemiological results to quantify the health burden from long-term ozone exposure in three major regions of the world. —Seltzer et al. —Karl Seltzer.
Ozone pollution near Earth’s surface is one of the main ingredients of summertime smog. It is also not directly measurable from space due to the abundance of ozone higher in the atmosphere, which obscures measurements of surface ozone. —Jin et al.
VOCs and nitrogen oxides react with sunlight to form ground-level ozone, the main component of smog. and so the question is: what does that do to the environment. 2015) “Airborne Measurements of the Atmospheric Emissions from a Fuel Ethanol Refinery” Journal of Geophysical Research: Atmospheres doi: 10.1002/2015JD023138.
As with the earlier assessment, this study consists of two separate, but related, analyses: greenhouse gas emissions from 2015-2050, and air quality impacts in 2030. This research points to the importance of two fundamental and parallel trends in energy and the environment. levels throughout the United States.
Bolden said air travel is one of the safest modes of transportation and vital to the US economy, but increasing air traffic is taking a toll on the environment and the nation’s aviation infrastructure. said at the Green Aviation Summit under way through Thursday at NASA’s Ames Research Center.
CleanZone is an approach to controlling interior air quality and providing a better driving environment through innovative solutions for enhanced wellbeing and health. The multi-filter was designed especially for the SPA platform and will first appear in the all-new XC90 in the beginning of 2015. Ground-level ozone.
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.
The study found that 60% of the winter primary hydrocarbon hydroxyl radical reactivity in London is from those diesel-related hydrocarbons; the authors predicted that the longer-chain HCs contribute up to 50 % of the ozone production potential in London. 15, 9983-9996, doi: 10.5194/acp-15-9983-2015. Hopkins, J. Lidster, R.
ppm in 2015 because of a combination of human activities and a strong El Niño event. increase from 2015 to 2016 alone, according to figures from the US National Oceanic and Atmospheric Administration quoted in the bulletin. ppm in 2015. Globally averaged concentrations of CO 2 reached 403.3 This record annual increase of 3.3
Starting in 2015, new diesel engines used in marine applications in the United States were required to meet Tier 4 emissions standards. This study underscores the need to increase funding for the replacement of older marine engines, reduce exposure to diesel emissions, and for EPA to update the service life assumptions used by the 2008 Rule.
The study found that clinically healthy children who live in a polluted environment and who also carry a gene—the apolipoprotein ?4 4 carriers could have a higher risk of developing early Alzheimer’s disease if they reside in a polluted urban environment. The results add to growing data suggesting ?4
The Haifa region began air quality monitoring some 30 years ago; the metropolitan area now has the densest air quality monitoring network in Israel with 27 continuous monitoring stations that measure criteria pollutants including sulfur oxides, nitrogen oxides, ozone, particulates and more.
In 2015, the U.S. We see it as similar to the ozone hole problem, where we really needed a tight, science-based focus on the limits to human inputs to the system--and howthose inputs affected the ozone layer's ability to keep people safe. Do you object to that term, and if so, what term do you prefer?
Daily exposure to ground level ozone in cities worldwide is associated with an increased risk of death, according to the largest study of its kind, published in an open-access paper in The BMJ. Ground level ozone is a highly reactive gas commonly found in urban and suburban environments, formed when pollutants react in sunlight.
Air pollution—specifically PM 2.5 , ozone and NO 2 —could be to blame for up to 33 million emergency asthma attack visits to hospital a year, according to a new open-access study published in the journal Environmental Health Perspectives. 37% and 73% of ozone and PM 2.5 37% and 73% of ozone and PM 2.5
in collaboration with scientists at the University of York’s Stockholm Environment Institute (SEI); University of Colorado; and the International Institute for Applied Systems Analysis, assessed 30 studies of vehicle emissions under real-world driving conditions in 11 major vehicle markets representing 80% of new diesel vehicle sales in 2015.
The European Environment Agency’s (EEA’s) “ Air quality in Europe — 2019 report ” shows that almost all Europeans living in cities are still exposed to air pollution levels that exceed the health-based air quality guidelines (AQGs) set by the World Health Organization (WHO). About 8% of the urban population in the EU-28 was exposed to PM 2.5
The SCOPE (Scientific Committee on Problems of the Environment) International Biofuels Project, has published the full proceedings of its Rapid Assessment workshop on the environmental effects of biofuel technologies, 22-25 September 2008. Rapid assessment on biofuels and environment: overview and key findings. Turner et al.,
The US Environmental Protection Agency (EPA) is proposing to retain, without changes, the existing, more stringent 2015 National Ambient Air Quality Standards (NAAQS) for ozone. From 2017 to 2019, ozone concentrations fell 4%. During that same time, national average ozone concentrations have dropped 25%. Background.
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