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Long-term exposure to ambient ozone appears to accelerate arterial conditions that progress into cardiovascular disease and stroke, according to a new University at Buffalo study. The study found that chronic exposure to ozone was associated with a progression of thickening of the main artery that supplies blood to the head and neck.
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. Trends in daily maximum ozone levels (known as 4MDA8) at urban and non-urban sites.
A team from Rice University and the Houston Fire Department EMS has found a direct correlation between out-of-hospital cardiac arrests (OHCA) and levels of air pollution and ozone. Ensor is a professor and chair of Rice’s Department of Statistics, and Raun is a research professor in Rice’s Department of Statistics. Katherine B.
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. Ozone is the reactive form of oxygen that contains three atoms per molecule (O 3 ) rather than the normal two. Khadraoui, S. &
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. Even short periods of unhealthy ozone levels can cause local death rates to rise. Scenario A2 and RCP 8.5.
55% of land area) by the middle of the century, and would increase by 3% and 4% the population-weighted average concentrations of fine particulate matter (PM 2.5 ) and ozone, respectively. and ozone exposure, respectively. and ozone in 2050 by factors of 1 and 3, respectively. C) and ozone (D) exposure are shown.
Scaling of industry sales statistics enabled the discrepancy to be attributed to the use of ancillary solvent products such as screenwash and deicer which are not included in internationally applied vehicle emission methodologies. While some VOCs are released in exhaust, others may arise from an unexpected source—e.g.,
and of 10 ppb in ozone were associated with increases in all-cause mortality of 7.3% (95% confidence interval [CI], 7.1 of less than 12 μg per cubic meter and ozone of less than 50 ppb, the same increases in PM 2.5 and ozone were associated with increases in the risk of death of 13.6% (95% CI, 13.1 and 1.1% (95% CI, 1.0
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 test fleet showed statistically significant effects for some pollutants, but not for others. NO x emissions, a target pollutant of concern for this program, did not show any statistically significant difference between the fuels for the FTP nor for each individual FTP phase.
and that due to ambient ozone pollution increased by 139.2%. Climate change exacerbates pollution, the researchers noted, through atmospheric stagnation, temperature-driven increases in particulate matter, and ground-level ozone formation, which are likely to be particularly severe in India. since 1990. —Professor Landrigan.
The results, published in an open-access paper in the journal Science , suggest that the focus of efforts to mitigate ozone formation and toxic chemical burdens need to be adjusted, the authors suggested. Total VOC emission factors for end uses of petrochemical sources in the study. 1A) and sales data of volatile chemical products.
DOE selected this project to improve local air quality in the Houston-Galveston area, which is currently designated as a National Ambient Air Quality Standards (NAAQS) 8-hour ozone non-attainment area.
Although the impact of carbon emissions on the climate is well documented, combustion engines also produce other harmful pollutants, such as particulate matter and the precursors to ground-level ozone. Such pollutants can trigger a variety of health problems, including asthma, emphysema, chronic bronchitis and ultimately premature death.
We estimate ozone and SOA formation potential. Among the findings from the study: For vehicles certified to the same emissions standard, there is no statistical difference of regulated gas-phase pollutant emissions between PFIs and GDIs. There were no statistically significant differences in the effects of cold-start on GDIs and PFIs.
It is also a precursor to the formation of ground-level ozone and particulate matter, and as a cause of acid rain. Among the other findings of the study were: Urban circularity (“compactness”) is not a statistically significant predictor of NO 2 concentration.
The found that three of the urban form metrics (contiguity, circularity, and vegetation) have a statistically significant relationship with urban NO 2 ; their combined effect could be substantial. Overall, our findings demonstrate that urban form has a statistically significant relationship with urban NO 2 concentrations.
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 ). More than 43,000 non-lung cancer deaths were registered among the participants. μg/m 3 increase in exposure.
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. These results show that meeting future air quality standards for ozone pollution will be more challenging than previously thought.
Additionally, reducing transport emissions of particulate matter (including black carbon), tropospheric ozone and aerosol precursors (including NO x ) can have human health and mitigation co?benefits benefits together with mitigation options that can be increased by technology advances. benefits in the short term.
Using statistical methods, the scientists infer emissions from these data within a radius of about one kilometer of the measurement location. We continuously measure the concentration of carbon dioxide, nitrogen oxide and volatile organic compounds at our urban observatory in Innsbruck. We record 36,000 data points per hour.
Exposure to higher ozone concentrations in the air is significantly associated with a higher risk of out-of-hospital cardiac arrest (OHCA), according to preliminary research to be presented at the American Heart Association’s Resuscitation Science Symposium 2020. Participants were age 63 years on average, 61% were men and 53% were non-white.
The largest systematic study ever conducted of human volunteers exposed to ozone air pollution has found no evidence of effects on the heart in its healthy, older participants, but did find effects on the volunteers’ ability to breathe, even at low ambient levels. Possible pathways by which ozone may cause adverse health effects.
A long-term study of the health of Canadian children has found that exposure to ozone (O 3 ) at birth was associated with an 82% increased risk of developing asthma by age three. An 82% higher risk of developing asthma was associated with each 10 parts per billion, or ppb increase in exposure to ozone at birth.
In the EU exposure to fine particles and ozone claims 180,000 lives a year, including 35,000 in Germany. We know rather well from statistical epidemiological studies in Europe and the US with several hundred thousand participants how specific pollutant concentrations affect mortality rates.
Ambient air pollution is a mixture of particulate matter (PM) and gaseous pollutants such as sulfur dioxide (SO 2 ), nitric dioxide (NO 2 ) and ozone (O 3 ). A statistical model called RIO was used to provide a real-time evaluation of air pollution exposure in each part of Belgium with adjustments for population density.
Nevertheless, Article 89 of the GDPR allows them to retain data “for scientific or historical research purposes or statistical purposes" in “the public interest." One example where this strategy has been successfully employed is the Montreal Protocol on Substances That Deplete the Ozone Layer.
Limitations of the study include the fact there is statistical uncertainty surrounding the estimates, so the size of the effect of air pollution on deaths could be larger or smaller. They focused particularly on PM 2.5 Worldwide, they found that air pollution is responsible for 120 extra deaths per year per 100,000 of the population.
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