Articles tagged with Air Quality
A USC study tracking Southern California children over 20 years found a 20% decrease in new asthma cases due to reduced PM2.5 levels. Nitrogen dioxide and particulate matter reductions also led to lower asthma rates.
The study examines 38 specific measures aiming to improve air quality and finds either positive or unclear effects. However, the variability in study findings makes it challenging to draw general conclusions about what works and what doesn't.
A $1.19 million NSF grant will develop a high school air quality curriculum in Riverside County, engaging over 2,000 students and addressing health impacts. The program aims to motivate underrepresented students in STEM activities and promote career opportunities.
A new forecasting system provides 72-hour forecasts of fine particulates in New Delhi, helping officials and residents plan to reduce exposure to unhealthy air. The system uses measurements, computer modeling, and statistical techniques, improving accuracy but requiring refinement for precise pollutant levels.
A Northwestern University study concludes that human-caused climate change played only a minor role in the city's record-breaking air pollution event. Researchers suggest that reducing greenhouse gas emissions can greatly improve air quality and mitigate health problems, making it a win-win for public health and the environment.
This study characterizes spatial and temporal variations in particulate-bound PAH pollution in Ulaanbaatar, identifying sources and health risks. High PAH concentrations were found in areas with coal and wood combustion, highlighting the need for effective air pollution control strategies.
Researchers found elevated ozone levels 30-50% higher than baseline conditions in the Amazon rainforest downwind of the city. Human activities release nitrogen oxides and VOCs that mix with plant-emitted gases, producing chemicals affecting regional air quality and climate.
Reducing household fine particulate matter (PM2.5) emissions in India could decrease mean annual ambient PM2.5 exposure by over 17%, averting premature mortality and meeting the national air quality standard for 103 additional districts. Complete mitigation of emissions from cooking alone would be necessary to achieve this goal.
Proposed EPA changes to causality framework, promoted by Tony Cox, raise concerns about the agency's ability to protect public health. The new approach requires direct evidence of causation from epidemiological studies, which is unattainable with observational data.
A new UW-Madison study reveals that saving energy by reducing energy consumption can lead to improved health outcomes and cost savings. The research found that a 12% increase in summertime energy efficiency could reduce exposure to air pollution, resulting in the avoidance of 475 human lives annually, worth an estimated $4 billion.
Researchers used landscape models to examine the interaction between climate, vegetation, and prior fires on area burned. They found that the fuel limitation effect from prior fire events doesn't last long and is not as large as expected, moderating only a 7.5% reduction in cumulative area burned over the century.
Researchers from University of Colorado at Boulder found that daily household activities like cooking and cleaning release high levels of airborne chemicals, contributing to indoor and outdoor air quality. The study highlights the importance of proper ventilation in homes to minimize health impacts.
Researchers at University of Utah Health found a 16 percent increased risk of miscarriage for women exposed to elevated air pollution levels, particularly nitrogen dioxide. The study suggests air quality is associated with adverse pregnancy outcomes and highlights the need for constructive solutions.
Despite improvements in air quality, the study found little impact on child lung health, with reduced lung function and asthma symptoms observed. Children still live in highly polluted areas, posing lifelong health risks, emphasizing the need for further action to tackle high levels of air pollution.
Researchers have developed a new method to identify outliers in air quality monitoring data, which can automatically flag erroneous data and improve forecasting accuracy. The method uses probability of residuals to discriminate outliers, allowing for simultaneous evaluation of spatial and temporal consistencies.
A recent study found that US air pollution deaths decreased by 47% between 1990 and 2010, resulting in nearly 135,000 fewer deaths. The improvement coincided with increased federal air quality regulations.
Researchers from the University of Utah discovered that homeowners change their behavior when they can visualize air quality in their homes. By using portable air quality monitors and a smartphone app, participants were able to see real-time data on PM2.5 levels and adjust their daily habits accordingly. This study has the potential to...
A University of Utah engineering study shows that smart controllers for home heating and cooling systems can clean pollution with minimal additional energy costs. The 'SmartAir' setting, which turns on the HVAC fan based on both temperature and air quality, cleaned the air almost as well as continuous operation but used 58% less energy.
A two-year study found that indoor HEPA filters significantly reduce fine-particulate matter in the air, with a 55% reduction in PM2.5 levels when used during poor air quality days.
Researchers find switching from coal to natural gas reduces air pollution, carbon emissions, but may increase water stress in some regions. A transition from coal to natural gas can have co-benefits for air quality and carbon mitigation, but trade-offs exist depending on the sector and location.
Four low-cost indoor air quality monitors reliably detect high levels of particulate matter in the air, enabling use of ventilation systems or air cleaners to reduce pollutant exposure. However, all monitors faltered for ultrafine particles smaller than 0.3 micrometers, which pose significant health risks.
Researchers found that pilots performed significantly better in flight simulations when CO2 levels were between 700 ppm and 1,500 ppm compared to 2,500 ppm. The negative effects of CO2 on flight performance became more pronounced with longer simulation times.
A study published by the USDA Forest Service found that tweets from California during the 2015 wildfire season could predict air quality impacts from smoke. The research combined ground-based monitoring with a topic model mapping citizens' tweets to improve models for predicting smoke dispersion.
A new study by the University of Washington shows that winter air pollution levels in the eastern US have remained high due to complex chemical processes, rather than reduced emissions. The study highlights the need for further emissions reductions to improve wintertime air quality.
Researchers in Shanghai discovered new particles formed in polluted air, defying expectations and highlighting the need for emission reductions to mitigate climate change. The study provides new insights into urban particle formation (NPF) and its role in affecting local and global air quality.
Ozone concentrations in US national parks are comparable to those in largest metropolitan areas between 1990 and 2014. Higher ozone levels are linked to decreased park visitation rates during this time period.
The study found that pollution levels in Hong Kong are mainly determined by tropical cyclone locations, with different impacts on PM10 and ozone levels. Tropical cyclones bring high concentrations of pollutants when located east or southeast of Hong Kong.
The TRAX project is the only known transit-based mobile air quality network in North America. It has mapped out where and when different pollutants are present along its route, providing valuable insights into air pollution and greenhouse gas emissions.
The Citizen-Enabled Aerosol Measurements for Satellites project deploys 250 air samplers across Colorado and the Northwest, collecting precise measurements of air quality. The study aims to improve satellite-derived pollution estimates and better understand where air pollution is dirtiest.
Researchers recommend integrating smart-sensor-controlled air cleaning technologies with plants to optimize indoor air quality. Plants absorb carbon dioxide, increase humidity, and passively absorb pollutants, making them a potential solution for reducing indoor pollution and saving energy.
A multidisciplinary research team will analyze data from over 17,000 children in Milwaukee and Racine counties to understand the impact of lead poisoning, air pollution, and exposure to violent crime on their health. The study aims to develop new exposure models that reflect a child's chemical, social, and physical environments.
The American Thoracic Society and Marron Institute report estimates that meeting the ATS's standards for ozone and fine particulate matter would save approximately 6,270 lives annually and avoid 15,300 instances of serious illness. Implementing these standards could reduce missed school and work days by 12.7 million.
A new study highlights the need for more detailed information about pollutant emissions to improve air quality models. Current data gaps lead to uncertainty in emission figures, affecting policymakers' decisions.
A study by University of Utah Health and Intermountain Healthcare found that bad air quality in the region causes more than 200 pneumonia cases each year, with older adults being particularly vulnerable. The research also estimates that improving air quality could save up to $1.6 million in healthcare costs annually.
Wildfire smoke plumes spread across the US, causing devastating effects on air quality and health. Researchers found that smoke from wildfires can tip air quality to unhealthy levels, particularly in urban areas with high population densities.
A study published in The Lancet Planetary Health found that air quality alert programs, like Toronto's, had limited effects on protecting public health. However, the authors suggest that collective and enforceable actions, such as improved urban planning and emission control, may be more effective in reducing health risks from air poll...
A large study found that short-term exposure to air pollution at levels below current standards was associated with a higher risk of death in Medicare patients. Daily increases in fine particulate matter and ozone were linked to increased mortality rates, even when levels were below the national air quality standards.
The Low Emission Zone in Leipzig has significantly reduced the concentration of black carbon and ultrafine particles, which are believed to be most dangerous due to their carcinogenic trace compounds. The reduction of these particles resulted in a significant improvement of air quality and a reduced health risk for the population.
A study published in The BMJ found that air pollution from road traffic in London is associated with an increased risk of low birth weight babies born at full term. Exposure to PM2.5 pollutants was linked to a 2-6% increased odds of low birth weight and 1-3% increased odds of being small for gestational age.
New research by UNC Chapel Hill shows that global GHG reductions will significantly benefit US air quality and human health in 2050. Foreign GHG mitigation efforts contribute substantially to reduced deaths from PM2.5 and O3-related mortality, with co-benefits estimated at $137 per ton CO2.
A new study published in Environmental Research Letters confirms China's clean air action has reduced PM2.5 concentrations by 21% since 2013. The study estimates that premature mortality related to PM2.5 pollution decreased by 9% due to improved air quality.
A review of over 60 studies found road pricing to be the most effective strategy to reduce emissions and traffic. Low-emission zones also encourage cleaner vehicles and reduce driving, leading to improved air quality.
Researchers propose switchgrass as a solution to China's poor air quality by reducing particulate emissions from soil erosion. The crop's ability to hold soil and produce biomass makes it an attractive alternative to coal, with potential for widespread adoption in the Loess Plateau region.
A new study found that deep-sea dispersant injection improved air quality for responders at the Deepwater Horizon disaster site. The subsea injection may have broken up petroleum into smaller droplets, reducing volatile toxic compounds in the air and allowing responders to work longer without respirators.
A recent survey reveals that air pollution has a significant impact on bird health, reproductive success, and diversity. Only two field studies have been conducted since 1950 on the topic, highlighting the need for further research.
A new AI-powered traffic management system called SimplifAI will be tested in Manchester, aiming to reduce congestion and improve air quality. The system, developed by Professor Lee McCluskey and his team, can analyze data and devise complex strategies in a fraction of the time required by human operators.
A new study found that installing 'cool roofs' in Southern California could lead to small increases in ozone and fine particulate pollution levels. The predicted increase can be minimized by requiring more comprehensive performance standards for cool-roofing materials.
Research from the University of Leicester and EarthSense reveals associations between air pollution and type 2 diabetes in a large cross-sectional study. Demographic factors largely explained the association, but the study suggests continued research into potential long-term exposure factors.
A new Harvard T.H. Chan School of Public Health study found that long-term exposure to certain air pollutants increases the risk of premature death among US seniors. The research suggests lowering levels of airborne fine particulate matter (PM2.5) and ozone could save up to 12,000 lives annually.
Air quality in China is improving due to better monitoring and regulation, leading to increased demand for electric cars and pollution-fighting technologies. The government's efforts have made China a major market for these devices, with suppliers experiencing a boon as the country transitions to cleaner energy sources.
A UM chemist will lead a three-year research project studying the chemical composition and evolution of western wildfire smoke. The study aims to improve understanding of the impact of VOCs on air quality, climate, and human health.
Researchers create most detailed and extensive local map of air pollution ever produced for an urban area, mapping air quality on a block-by-block basis. The study reveals air pollution can vary dramatically even within a single city block.
A new study by San Diego State University researchers found that cigarette smoke, marijuana smoking, and candles are significant sources of airborne particles in homes. The study also discovered that frying food and cleaning products increase fine particle levels, posing a risk to children's health.
A new study published in Atmospheric Environment suggests that low hedges can be more effective than taller trees in reducing urban air pollution. Strategically placed low hedges can help mitigate the impact of traffic emissions in cityscapes with large buildings close to roads.
Reduced natural dust from the Gobi Desert leads to increased man-made pollution over eastern China due to reduced temperature differential between sea and land, resulting in weaker winds and air stagnation. This has a profound effect on climate and air quality, with cleaner air observed two to three days after wind-borne dust arrives.
Researchers develop new method to calculate indoor CO2 concentrations more accurately, using established concepts from human metabolism and exercise physiology. The new approach considers body size, composition, diet, and physical activity to provide a more reliable estimate of CO2 generation rates.
A team of researchers led by Colorado State University is conducting a comprehensive study to better understand how wildfire smoke changes chemically with time, affecting air quality across the US. The study aims to improve predictions of air quality and weather patterns.
A new study found that Toronto's subways have the highest levels of airborne particulate matter in Canada, with average values up to 100 micrograms per cubic metre, compared to Montreal's 36 micrograms and Vancouver's 17 micrograms. The high metal content and abrasive wear on steel wheels may be contributing factors.
Experts predict that adopting and enforcing tighter air quality standards in China could save 3 million premature deaths each year, primarily due to a decrease in cardiorespiratory diseases. The study found that bringing PM10 levels to the WHO standard of 20 μg/m3 would have significant public health benefits.
A new study from UCI researchers finds that prolonged hot spells and poor air quality combine to worsen health impacts. The study analyzed 15 years of surface observations in the eastern US and Canada, finding a significant increase in adverse health effects when these factors overlap.