PM 2.5
PM2.5 predictions in a congested urban street using CAL3QHC model
In urban areas roads surrounded by high rise buildings cause trapping of respirable suspended particulate matter, PM2.5 in the lower regions. Under these situations it is very desirable to know the location of the trapped pollutants in order to find ways to mitigate their health effects. The present study focuses …Role of meteorology on urban air pollution dispersion: a 20yr analysis for Delhi, India
In order to assess the role of meteorology as a diffusing or non-diffusing agent, this paper presents a 20 year analysis of the effects of meteorology on air pollution and has considered Delhi for pilot analysis. The study will be extended to 10 more cities in 2010.Traffic-related air pollution: a critical review of the literature on emissions, exposure, and health effects
Motor vehicles are a significant source of urban air pollution and are increasingly important contributors of anthropogenic carbon dioxide and other greenhouse gases. As awareness of the potential health effects of air pollutants has grown, many countries have implemented more stringent emissions controls and made steady progress in reducing the …Estimated air pollution and health benefits of metro system in Delhi
The impact of air pollution on the human health and the ecosystem is increasingly been linked to the growing transport sector. A major intervention that Delhi is counting on is the extension of the metro rail system, to shift the motorized transport trends to the metro rail. The expected level …Public health benefits of strategies to reduce greenhouse-gas emissions: low-carbon electricity generation
In this report, the third in this Series on health and climate change, we assess the changes in particle air pollution emissions and consequent effects on health that are likely to result from greenhouse-gas mitigation measures in the electricity generation sector in the European Union (EU), China, and India. We …City air: from foul to critical- revised norms highlight violation
Calcutta began the week as a polluted city but will end it as a critically polluted city. The new standards for air quality announced by the environment ministry on Wednesday have pushed Calcutta firmly into the hall of shame, with the toxic count of at least two major pollutants being …Deadly pygmy called PM 2.5
The cityCoal's assault on human health
Physicians for Social Responsibility today released a groundbreaking medical report,Comparative toxicity of size-fractionated airborne particulate matter collected at different distances from an urban highway
During the last several decades, industrialization and urbanization have resulted in dramatic increases in vehicle-associated emissions. More than 50% of the total particulate matter (PM) emissions in urban areas are related to road traffic (Briggs et al. 1997). A number of studies have reported significant associations between traffic density or …Bars not stubbing out cigarettes: Survey
New Delhi: The hype surrounding ban on smoking at public places seems to have vanished into thin air. A recent survey shows that the ban has not been effectively implemented since it came into effect in October last year. The survey conducted by Voluntary Health Association of India (VHAI) found …Clean air for smaller cities: Philippines country profile
Air pollution levels in the megacities of Asia show a stabilizing trend but still exceed World Health Organization guidelines. Studies also show poor air quality, not only in the megacities of Asia, but also in smaller cities with populations of 200,000 to 1.5 million. While megacities often receive support for …Fine particles (PM2.5 ) in ambient air of Lucknow city due to fireworks on Diwali festival
People burn crackers world over on different occasions in different countries to express their happiness. Fireworks in large amounts aggravate the level of air pollutants and cause significant short-term air quality degradation with possible impact on human health. Fine particles (PM2.5 <2.5 μm), which may pose detrimental effects on human …Transport costs
Traffic pollution is known to cause chronic bronchitis and asthma, killing thousands every year. But that is not all. Simply living beside a busy road has its consequences. Particles in vehicular exhaust can stick to lungs for longer than was known, endanger the health of an unborn child, lead to …Postural changes in blood pressure associated with interactions between candidate genes for chronic respiratory diseases
Fine particulate matter [aerodynamic diameter ? 2.5 ?m (PM2.5)] has been associated with autonomic dysregulation. The authors hypothesized that PM2.5 influences postural changes in systolic blood pressure (?SBP) and in diastolic blood pressure (?DBP) and that this effect is modified by genes thought to be related to chronic lung disease.California wildfires of 2008: Coarse and fine particulate matter toxicity
During the last week of June 2008, central and northern California experienced thousands of forest and brush fires, giving rise to a week of severe fire-related particulate air pollution throughout the region. California experienced PM10?2.5 (particulate matter with mass median aerodynamic diameter > 2.5 ?m to < 10 ?m; coarse …Estimating regional spatial and temporal variability of PM2.5 concentrations using satellite data, meteorology, and land use
Studies of chronic health effects due to exposures to particulate matter with aerodynamic diameters ? 2.5 ?m (PM2.5) are often limited by sparse measurements. Satellite aerosol remote sensing data may be used to extend PM2.5 ground networks to cover a much larger area. This study examined the benefits of using …Moving toward clean vehicles and fuels - A global overview
Since the end of World War II, the worldA cohort study of traffic-related air pollution and mortality in Toronto, Ontario, Canada
Chronic exposure to traffic-related air pollution (TRAP) may contribute to premature mortality, but few studies to date have addressed this topic. This study assessed the association between TRAP and mortality in Toronto, Ontario, Canada.15,000 premature deaths a year: Dhakas air pollution level highest in the world
Air pollution in capital city Dhaka raised higher than Mexico and Mumbai killing thousands of people prematurely each year, health experts say. According to the Department of Environment (DoE) the density of airborne particulate matter (PM) reaches 463 micrograms per cubic metre (mcm) in the city during December-March period - …Experimentally determined human respiratory tract deposition of airborne particles at a busy street
Traffic is one of the major sources of harmful airborne particles worldwide. To relate exposure to adverse health effects it is important to determine the deposition probability of the inhaled particles in the human respiratory tract. The size-dependent deposition of 12?580 nm particles was measured with a novel setup in …