Air pollution benefit-cost analyses depend on dispersion models to predict population exposures to pollutants, but it is difficult to determine the reasonableness of the model estimates. This is in part because validation with field measurements is not feasible for marginal concentration changes and because few models can capture the necessary spatial and temporal domains with adequate sophisti...

Air pollution is dispersion of the particulates, biological molecules, or other harmful materials into Earth’s atmosphere. Industrialization and urbanization are two major causes deteriorating air quality cities in Tamil Nadu, India. Coimbatore second most important commercial industrial city These activities can add significant levels heavy metals So, regular surveillance consistent monitoring...

Cooking is a major contributor to indoor particulate matter (PM) concentrations. Studies suggest that cooking-generated PM rapidly disperses even when range hood in operation, suggesting hoods fail perform sufficiently used isolation. However, the performance of can be improved by supply make-up air equivalent airflow rate hood. This study evaluates prevention dispersion and discharge ventilati...

The impact of regional emissions (e.g., domestic and international) on surface particulate matter (PM) concentrations in the Seoul metropolitan area (SMA), South Korea, and its sensitivities to meteorology and emissions inventories are quantitatively estimated for 2014 using regional air quality modeling systems. Located on the downwind side of strong sources of anthropogenic emissions, South K...

Short-term forecasts of air pollution levels in big cities are now reported in newspapers and other media outlets. Studies indicate that even short-term exposure to high levels of an air pollutant called atmospheric particulate matter can lead to long-term health effects. Data are typically observed at fixed monitoring stations throughout a study region of interest at different time points. Sta...

Air pollution is a complex mixture of solid and liquid particles suspended in the air (the so called particulate matter) that vary in size, composition and origin, and different types of gases such as ozone (O 3 ), nitrogen oxides (NO 2 ), volatile organic carbons, and carbon monoxide (CO). In the recent years there has been considerable interest on the long and short-term effects of exposure t...

assessment (EIA) has been focused primarily on the local impacts of projects, without considering regional environmental effects. Environmental clearances for proposed projects are based on reports of local impacts. However, any developmental project poses a potential risk to the environment as a whole, and not just in the immediate vicinity of the project. Recently, there has been increased co...

SPECIATE is the U.S. Environmental Protection Agency's (EPA) repository of volatile organic compounds (VOCs) and particulate matter (PM) speciation profiles of air pollution sources. These source profiles can be used to (1) provide input to chemical mass balance (CMB) receptor models; (2) verify profiles derived from ambient measurements by multivariate receptor models (e.g., factor analysis an...

Smoke plume rise is critically dependent on plume updraft structure. Smoke plumes from landscape burns (forest and agricultural burns) are typically structured into “sub-plumes” or multiple-core updrafts with the number of updraft cores depending on characteristics of the landscape, fire, fuels, and weather. The number of updraft cores determines the efficiency of vertical transport of heat and...

Geographic information system (GIS) based emission inventory of particulate matter of aerodynamic diameter less than 10 μm (PM10) for the base, 5 th and 10 th year was developed for Kanpur, an urban area in India. It has been observed that the 5 th and 10 th year will experience increased emission by factors of 1.5 and 2.2 of the base year. Twenty one control options (e.g. introduction of Euro ...