Investigations of atmospheric pollution have recently reached a new stage. In addition to the estimation and the monitoring of pollutant concentrations in the air around their sources, by way of observational data and also by calcu lations on the basis of theoretical research, it is now possible to make short term forecasts of air pollution and to use them to regulate industrial emissions. Many countries are interested in such forecasts. In the Soviet Union the organizations of the State Committee of the USSR for Hydrometeorology (Goskomgidromet) are carrying out a wide-scale scientific programme on the devising of methods to forecast atmospheric pollution. Prognostic groups are organized in territorial hydrometeocenters; in essence a new forecasting service has been established. Nowadays, in more than 200 towns of the USSR predictions are made and transmitted to large enterprises for the purpose of taking the necessary steps to preserve air qua lity. To ensure an operative working of this service, Methodological Instruc (1979) have been issued, as well as other instructions and guides. Wide tions scale verifications of proposed calculating methods have been made. Prob lems of forecasting and regulating air pollution have become evident lately in other countries as well. Much attention to these problems is payed by the World Meteorological Organization (WMO). They have been widely dis cussed in a number of international conferences and meetings for modelling and investigating pollutant distribution in the atmosphere. The number of publications on this subject is rapidly increasing.

In 1969 the North Atlantic Treaty Organisation (NATO) established the Committee on Challenges of Modern Society (CCMS). The subject of air pol- tion was from the start, one of the priority problems under study within the fra- work of various pilot studies undertaken by this committee. The organization of a periodic conference dealing with air pollution modeling and its application has become one of the main activities within the pilot study relating to air pollution. The first five international conferences were organized by the United States as the pilot country; the second five by the Federal Republic of Germany; the third five by Belgium; the next four by The Netherlands; and the next five by Denmark; and with this one, the last three by Portugal. th This volume contains the papers and posters presented at the 27 NATO/CCMS International Technical Meeting on Air Pollution Modeling and Its Application held in Banff, Canada, 24-29 October 2004. The key topics at this ITM included: Role of Atmospheric Models in Air Pollution Policy and Abatement Strategies; Integrated Regional Modeling; Effects of Climate Change on Air Quality; Aerosols as Atmospheric Contaminants; New Developments; and Model Assessment and Verification. 104 participants from North and South America, Europe, Africa and Asia attended th the 27 ITM. The conference was jointly organized by the University of Aveiro, Portugal (Pilot Country) and by The University of Calgary, Canada (Host Country). A total of 74 oral and 22 poster papers were presented during the conference.

This book provides a strong interdisciplinary approach in presenting topics on Air Pollution by integrating chemistry, physics, meteorology, engineering, health effects, policy, and regulatory aspects. It addresses the requirements of undergraduate/graduate students in Science/Engineering opting Air Pollution courses at a basic level by dealing exhaustively the fundamental aspects of air pollution with suitable examples and worked out problems. Meteorological aspects of dispersion of air pollutants, modeling techniques for air quality assessment, prediction, health risks, up-to-date information on different air quality management approaches and regulatory preventive measures adopted by various countries are presented with supporting data. Present Global & National air pollution scenarios and latest developments in Preventive Measures for air pollution control, emissions inventory; Comparison with emission standards, assessment of emission flows and emission factors are presented with critical explanation. To provide technological perspectives for undergraduate /graduate Engineering students, the scientific and engineering aspects of air pollution monitoring, assessment predictive modelling, air pollution control technologies, air pollution from automobiles noise pollution and methodologies for frequently used in Air Permit Applications-Screening Techniques are discussed with applications which will expose the students to various software programs used in this area. The specialty of this book is that it extensively deals on various aspects of air pollution, providing up-to-date information on global air pollution trends, preventive measures adopted by different countries, latest modeling techniques for air quality assessment/prediction/management and state of art air pollution control technologies with suitable examples, illustrations and worked out problems. A Stronger systems approach is adopted in presenting the nature of air pollutants, their dispersion under different meteorological conditions, associated human health Risks, measures, models, and control technologies of air pollution at scale - starting at the individual/niche level and expanding to local /regional /global scale. The present book serves the needs of undergraduate/graduate students in Science and Engineering pursuing Air Pollution Course both as a basic introductory or as an advanced Core course and also as a resource material for researchers/practicing professionals in this important area.

Despite more than 20 years of regulatory efforts, concern is widespread that ozone pollution in the lower atmosphere, or troposphere, threatens the health of humans, animals, and vegetation. This book discusses how scientific information can be used to develop more effective regulations to control ozone. Rethinking the Ozone Problem in Urban and Regional Air Pollution discusses: The latest data and analysis on how tropospheric ozone is formed. How well our measurement techniques are functioning. Deficiencies in efforts to date to control the problem. Approaches to reducing ozone precursor emissions that hold the most promise. What additional research is needed. With a wealth of technical information, the book discusses atmospheric chemistry, the role of oxides of nitrogen (NOx) and volatile organic compounds (VOCs) in ozone formation, monitoring and modeling the formation and transport processes, and the potential contribution of alternative fuels to solving the tropospheric ozone problem. The committee discusses criteria for designing more effective ozone control efforts. Because of its direct bearing on decisions to be made under the Clean Air Act, this book should be of great interest to environmental advocates, industry, and the regulatory community as well as scientists, faculty, and students.