TOAR shows present-day global ozone distribution and trends relevant to health; public database

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Ozone levels across much of North America and Europe dropped significantly between 2000 and 2014. People living in parts of southern Europe, South Korea and southern Japan and China also experienced more than 15 days a year of ozone levels above 70 ppb.

2018 112

Satellite method provides insight into ozone-NOx-VOCs sensitivity for different locations

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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.

2017 78

Study finds rising emissions of ozone-depleting CFC-11, banned by Montreal Protocol

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Emissions of one of the chemicals most responsible for the Antarctic ozone hole are on the rise, despite an international treaty that required an end to its production in 2010, a new study by researchers at NOAA and their colleagues shows. Trichlorofluoromethane (CFC-11) is the second-most abundant ozone-depleting gas in the atmosphere and a member of the family of chemicals most responsible for the giant hole in the ozone layer that forms over Antarctica each September.

2018 65

Duke/York study finds long-term exposure to ozone has significant impacts on human health, but lower than prior modeling results

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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. Long-term ozone (O 3 ) exposure estimates from chemical transport models are frequently paired with exposure-response relationships from epidemiological studies to estimate associated health burdens.

2018 74

Texas study finds PHEV use could increase ozone at night, decrease ozone during the day

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A study by researchers at the University of Texas found that in general, use of plug-in hybrid electric vehicles (PHEVs) can lead to an increase in ozone during nighttime hours (due to decreased scavenging from both vehicles and EGU stacks) and a decrease in ozone during daytime hours. In addition, the study, published in the IOP journal Environmental Research Letters , found that charging plug-in vehicles at night could slightly reduce, on average, ozone. Environ.

Ozone 76

Obama Administration withdraws proposed rulemaking on strengthened ozone standards

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In a statement released this morning, President Barack Obama said he has requested that US Environmental Protection Agency (EPA) Administrator Lisa Jackson withdraw the agency’s draft Ozone National Ambient Air Quality Standards (NAAQS) rulemaking. In January 2010, EPA proposed strengthening the NAAQS for ground-level ozone, the main component of smog, and said it planned to issue final standards by 31 August 2010. Overview of January 2010 proposed revisions to ozone NAAQS.

Ozone 87

US EPA to Reconsider National Ozone Standards

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The US Environmental Protection Agency (EPA) will reconsider the 2008 primary and secondary ozone standards. In 2008, EPA established a new primary 8-hour standard for ozone of 0.075 parts per million (ppm), and a new secondary standard set at a form and level identical to the new primary standard. The agency will propose any revisions to the ozone standards by December 2009 and will issue a final decision by August 2010.

Ozone 71

Researchers identify four new man-made gases contributing to destruction of ozone layer

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A study by an international team led by scientists at the University of East Anglia have identified four new man-made gases in the atmosphere, all of which are contributing to the destruction of the ozone layer. CFCs are the main cause of the hole in the ozone layer over Antarctica. The identification of these four new gases is very worrying as they will contribute to the destruction of the ozone layer.

2014 84

Rice/EPA study finds ground-level ozone falling faster than CMAQ model predicted

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Researchers from Rice University and the US Environmental Protection Agency (EPA) report in a paper in the journal Atmospheric Chemistry that particularly in Northeastern cities, ozone levels dropped even beyond what was anticipated by cutting emissions of NO x from 2002 to 2006. The study suggests the Community Multiscale Air Quality (CMAQ) model significantly under-predicted the reduction in ozone. How ozone responds to changes in NO x and hydrocarbons is a nonlinear chemistry.

Ozone 76

Airborne measurements show ozone-forming VOCs emissions from ethanol plant higher than government estimates

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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. The team also observed chemical transformations of the emissions from Decatur, including formation of new particles, nitric acid, peroxyacyl nitrates, aldehydes, ozone and sulfate aerosol.

2015 71

EPA Proposes New Tougher Ground-Level Ozone Standards

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Counties projected to violate proposed Primary 8-hour Ground-Level Ozone Standards in 2020. The United States Environmental Protection Agency has proposed the strictest standards to date for ground-level ozone. Ground-level ozone forms when emissions from industrial facilities, power plants, landfills and motor vehicles react in the sun. EPA is also proposing to set a separate “secondary” standard to protect the environment within the range of 7-15 ppm-hours.

Ozone 68

EPA Climate Change Adaptation Plan sees likely increase in tropospheric ozone, with more difficulty in attaining NAAQS in many areas

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Among the many climate-related vulnerabilities that can impact its mission, the US Environmental Protection Agency (EPA) cites a likely increase in tropospheric ozone pollution as potentially making it more difficult to attain National Ambient Air Quality Standards ( NAAQS ) in many areas with existing ozone problems. Through climate adaptation planning, EPA will continue to protect human health and the environment, but in a way that accounts for the effects of climate change.

Modelling the Impact of PHEVs on Ozone in Denver

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Denver represents an interesting case study for exploring potential PHEV impacts because it violates the federal air quality standard for ozone and because several large EGUs [electricity generating units] are located in or near the urbanized area. The ozone response to PHEV penetration was modeled under a wide range of meteorological conditions, as experienced during July 2006. Ozone concentration increases were modeled for small areas near central Denver. Environ.

Toyota develops tropospheric ozone-concentration simulator for South and East Asia

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have developed a simulator able to predict tropospheric ozone concentrations across the whole of South and East Asia. Tropospheric ozone is the main cause of photochemical smog, an atmospheric pollutant harmful to human health and plant growth. As these photochemical reaction pathways are very complex, reduction of NO x and VOC emissions may not necessarily be effective in reducing tropospheric ozone concentrations. Toyota Motor Corporation (TMC) and Toyota Central R&D Labs.,

Asia 71

Fast action on black carbon, ozone and methane could help limit global temperature rise to 2 degrees C

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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

2011 99

UNEP study: small number of measures targeting black carbon and tropospheric ozone could yield immediate climate benefits

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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.

2011 99

Study Finds Ozone, Nitrogen Change the Way Rising CO2 Affects Earths Water

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Through a recent modeling experiment, a team of NASA-funded researchers have found that future concentrations of carbon dioxide and ozone in the atmosphere and of nitrogen in the soil are likely to have an important but overlooked effect on the cycling of water from sky to land to waterways.

Ozone 88

Urban CO2 Domes May Enhance May Increase Ozone and PM, With Accompanying Increase in Mortality

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In a new study published online 10 March in the ACS journal Environmental Science and Technology , however, Stanford University professor Mark Jacobson finds that local CO 2 emissions in isolation may increase local ozone and particulate matter. Environ. While the existence of higher CO 2 levels overs cities—CO 2 domes—has been known for more than a decade, their effects on local air pollution has up to now not been explored.

Ozone 76

EU emissions of ozone pollutants fall 78 per cent

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A European air pollutant report reveals a significant fall in the emissions of sulphur oxides and other ozone-forming pollutants over the last two decades. The official EU emission inventory report compiled by the European Environment Agency (EEA) shows that the 27 countries that make make up the European Union have collectively cut sulphur emissions (SOx) [.].

Ozone 40

Air pollution may cause 35,000 premature deaths a year

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Environment Minister Jim Fitzpatrick quoted the figure when giving evidence to the Commons environment audit committee (EAC), the Guardian reports. Tags: Green credentials air pollution airborne EAC Jim Fitzpatrick ozone premature deaths soot sulphur Air pollution may be responsible for more than 35,000 premature deaths a year, a government minister admitted, more than 50 per cent more than the official estimate.

International study finds air pollution leads to millions of hospital visits for asthma attacks worldwide

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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. The researchers aimed to estimate the number of asthma emergency room visits and new onset asthma cases globally attributable to PM 2.5 , ozone, and NO 2 concentrations. 37% and 73% of ozone and PM 2.5

2018 73

Study links air pollution to increased emergency department visits for heart and lung disease

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They found that exposure to pollutants such as ground-level ozone and nitrogen oxides, which are created from burning fossil fuels, led to increased ED visits. The study is published in the journal Environment International.

2018 148

Northwestern/Princeton study explores air quality impacts of aggressive conversion to EVs

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In a paper published in the journal Atmospheric Environment , they report on the findings from a suite of scenarios designed to quantify the effect of both the magnitude of EV market penetration and the source of electricity generation used to power them.

2019 121

Study finds US air pollution deaths nearly halved between 1990 and 2010

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and ozone from a 21-year computer simulation of air pollution across the US. and ozone to the geographical areas in which people live and the causes of death in those areas, using data from the Centers for Disease Control and Prevention, to estimate deaths from air pollution during the period.

2018 116

Republic deploys 67 CNG solid waste and recycling trucks in southern NJ and Philadelphia area

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One of the more lasting contributions we can make in our community is to protect the environment by reducing ozone-forming emissions wherever possible. These trucks run cleaner and quieter, and will help to make the local environment healthier for future generations. According to the US Environmental Protection Agency, each new CNG solid waste and recycling truck reduces ozone-forming emissions by as much as 80% when compared to older diesel powered trucks.

Study finds significant slowdown in decrease of NOx emissions in US; implications for air quality management

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They found that levels of pollutants that can contribute to the formation of ground-level ozone, or smog, have failed to continue a fairly steady decline as estimated by the US Environmental Protection Agency.

2018 78

Maersk calls for EU enforcement of reefer legislation, pushes its Supotec foam

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Maersk Container Industry (MCI) is calling for tougher enforcement of European environmental legislation designed to protect the Earth’s ozone layer and help prevent climate change. This would benefit the environment, and it would help European innovation and environmental investments pay off. Current EU legislation bans the “import” or “placing on the market” of reefer containers with significant potential to damage the climate and ozone layer.

2013 78

EEA report finds more action needed to protect Europe’s most vulnerable citizens from air pollution, noise and extreme temperatures

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The report stresses that better alignment of social and environment policies and improved local action are needed to successfully tackle environmental justice issues.

2019 116

MIT study says combustion emissions cause ~200,000 premature deaths/year in US; vehicles and power generation top sources

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Researchers from MIT’s Laboratory for Aviation and the Environment have concluded that ground-level PM 2.5 1,000 to 21,000) deaths due to changes in ozone concentrations. 900 to 11,000) ozone-related early deaths per year. 300 to 4,000) ozone-related premature mortalities per year. 2000 (90% CI: 0–4,000) early deaths from ozone, according to the study.

2013 120

Study uncovers role of longer-chain unburned hydrocarbon emissions from diesels in London air pollution; calls for regulatory shift

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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.

2015 106

Study finds global emissions of ethane and propane underestimated by more than 50%

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Accounting for these enhanced ethane and propane emissions results in simulated surface ozone concentrations that are 5–13% higher than previously assumed in some polluted regions in Asia. The effects of higher ozone would be felt in the rural environment where it damages crops and plants, and in cities on human health.

2018 76

UN report projects that increasing use of HFCs likely to have a significant climate impact by 2050; equivalent to current total annual emissions from transport

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The decrease in CO 2 equivalent emissions of ODSs (ozone-depleting substances: CFCs, halons, HCFCs, and others) may be offset by the projected increase in their non-ozone depleting substitutes (HFCs) (lines designated as HFC scenarios). A new report from the UN Environment Programme (UNEP) projects that by 2050, hydrofluorocarbons (HFCs) could be responsible for emissions equivalent to 3.5 Climate and the Ozone Layer.

2011 94

ROUSH CleanTech develops near-zero NOx propane autogas engine; CARB-certified at 0.02 g/bhp-hr

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Our newest propane autogas engine reinforces ROUSH CleanTech’s commitment to provide vehicle solutions that reduce the impact to the environment while leveraging an abundant, domestically produced fuel that costs less than diesel. NO x emissions are known to be harmful to human health and to the environment, contributing to regional ozone attainment challenges, smog and other air-quality issues.

2018 80

UMD-led study finds China’s SO2 emissions down 75% since 2007, India’s up 50%; India may now be the top SO2 emitter

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Two maps compare total annual sulfur dioxide amounts for India and China during 2005 (left) and 2016 based on Ozone Monitoring Instrument measurements. Illustration: Chris McLinden, Environment and Climate Change Canada.

India 85

Indo-US task force to study HFC phase-down

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India’s Minister of Environment, Jairam Ramesh, hosted US Deputy Assistant Secretary of State for Environment, Daniel A. HFCs are chemicals are potential substitutes for ozone-depleting and climate-warming CFCs and HCFCs currently being phased out under the Montreal Protocol treaty to protect the ozone layer. India and the US have agreed to establish an Indo-US Technical Task Force on hydrofluorocarbons, or HFCs—super greenhouse gases.

HALO research aircraft measuring the emissions of megacities in EmeRGe project

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The transport and transformation of plumes from selected European and Asian major population centers (MPCs) will now be investigated with special focus on the rate of formation of ozone and aerosols.

2018 117

New international study finds lab testing of diesel NOx emissions underestimates real-world levels by up to 50%

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Daven Henze, an associate professor of mechanical engineering at CU Boulder, used computer modeling and NASA satellite data to simulate how particulate matter and ozone levels are, and will be, impacted by excess NOx levels in specific locations.

2017 104

European Parliament calls for fast action to cut non-CO2 climate forcers

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The European Parliament is calling for fast action to reduce non-CO 2 climate forcers including black carbon soot, hydrofluorocarbons (HFCs), methane, and ground-level ozone, which together are responsible for nearly half of climate forcing. The EU Resolution follows the first-ever ministerial meeting on short-lived climate forcers held 12 September in Mexico City, hosted by Mexico and Sweden, along with the United States and the United Nations Environment Programme.

2011 78

Automakers agree on common plug to recharge electric vehicles

Tony Karrer Delicious EVdriven

Neutral richii @ Apr 19th 2009 5:28PM @ everyone, I can see what your trying to say, that without gas powered vehicles that a much larger strain will be put on electrical facilities that also contribute to air pollution and degrade our environment.

Large scale epidemiological study associates PM2.5, NO2 pollution with kidney, bladder and colorectal cancer death

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The scientific team examined associations of mortality from cancer at 29 sites with long-term residential exposure to three ambient pollutants: PM 2.5 , nitrogen dioxide (NO 2 ) and ozone (O 3 ). Turner MC, Krewski D, Diver WR, Pope CA 3rd, Burnett RT, Jerrett M, Marshall JD, Gapstur SM (2017) “Ambient Air Pollution and Cancer Mortality in the Cancer Prevention Study II” Environ Health Perspect.

2017 65

Study finds marine workboat engines staying in service two times longer than estimated by EPA; emissions reduction implications

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DTF and EDF’s new report, “ Impact of Updated Service Life Estimates on Harbor Craft and Switcher Locomotive Emission Forecasts and Cost-Effectiveness ”, completed by Ramboll Environ, found the average Category 2 workboat remains in service for 50 years, instead of the 23-year lifespan estimated by the EPA in the 2008 Heavy Duty Locomotive and Marine Rule.

2019 78

Upwards of 90% of EU city dwellers exposed to PM2.5 and O3 pollution at levels deemed harmful by WHO

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and O 3 pollution at levels deemed harmful to health by the World Health Organisation (WHO), according to the latest assessment of air quality in Europe, published by the European Environment Agency (EEA).

2013 101

Congressman introduces “Super Pollutant” emissions act

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The short-lived climate pollutants (also called super pollutants) include black carbon, a primary component of soot; tropospheric ozone, the principle component of urban smog; methane; and hydrofluorocarbons (HFCs). US Congressman Scott Peters (CA-52) introduced the Super Pollutant Emissions Reduction Act (SUPER Act) of 2013, legislation aimed at combating short-lived climate pollutants, which are only somewhat addressed by disparate government programs.

2013 71