A monitoring investigation has been carried out in selected areas of northern India, viz. Agra, Mathura, Firozabad and Bharatpur. It reveals that Noise Level Standards and Guidelines are notified in the Environment (Protection) Rules, 1986 are yet to be compiled at almost all areas, particularly during night hours.

In this paper, an analysis of data from continuous ambient air monitoring station in Hyderabad is reported to better understand daily and seasonal trends of particulates and chemistry of ozone pollution in the atmosphere.

Meteorology plays an important role in the design, alignment and orientation of buildings, streets and urban colonies. Mitigative measures to ameliorate adverse impacts in tropical climates are suggested.

Conference on evolving strategies for improving the air quality of Indian cities New Delhi, 1st October 2008.

An aerosol is a suspension of fine particles in a gas, usually air, and is generally taken to include both solid and liquid particles with dimensions ranging from a few nanometers up to around 20 micrometers in diameter. This paper presents an overview of the various physical and chemical characteristics of aerosols.

An attempt has been made to quantify the relative abundance and size distribution of oily-droplets in the ambient air of Shillong using an optical microscope. The sampling was carried out at controlled, moderate traffic, high traffic, traffic intersections, industrial estates and elevated specific locations in different seasons during 1998-2000.

The purpose of the present study is to describe the pattern of pollutant dispersion in the neighbourhood of the thermal power station-II in Neyveli. Neyveli Lignite Corporation houses two mines and two thermal power stations. Thermal power station-II is designed for 7 numbers of boilers each producing electricity at 210 MW, using lignite as the fuel.

Chennai Metropolitan Area extends over 1180 sq. km and has a population of more than 8.5 million. Rapid increase in urbanization with vehicle congestion has increased menacingly on the roads of Chennai. As a result of this, gaseous pollutants and respirable and suspended particulate matter pollutants are continuously increasing in the ambient air of Chennai city. These pollutants have been assessed using high volume sampler at residential and traffic intersection sampling stations in Chennai City.

Air Quality Impact Assessment studies of Singoli Bhatwari Hydroelectric Power Plant are reported. The plant site is connected to the dam site via a road. Computations of four pollutants namely Carbon Monoxide, Sulphur Dioxide, Oxides of Nitrogen and Suspended Particulate Matter have been made at various sites around the plant using CALINE-3 model. Sources considered responsible for air pollution are vehicular traffic on road and construction activities around the plant site.

A study of automobile pollution in Kolkata has been made using CALINE 4 model. This model was selected as it offered several advantages over other models. It has been first used as the base model to develop the correction factors for the application of this model for the city of Kolkata, and then the modified model with the correction factors has been validated. Carbon Monoxide was chosen for the model because it is principally emitted from vehicular sources and daily background concentration data of this gas were available for a year for comparative studies.