Standard: API 4043
ATMOSPHERIC HAZE : A REVIEW
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INTRODUCTION AND OUTLINE OF FUTURE EFFORT
The recent acute Interest in atmospheric hazes and associated aspects of air pollution reflects a general awareness of the threat of diminishing air resources. Because of the complexity of the problem which involves industrial, scientific, and biological, as well as social aspects, there Is great dispersion of literature between these and other disciplines. In preparing this review we did not, therefore, aim at reviewing all the relevant publications; rather, the method was to identify the most important trends of haze research and to follow the development along these trends.
Most leading experts agree that the present state-of-the-art in haze research does not allow immediate formulation of a complete system for classifying and identifying various types of atmospheric haze. A further series of both laboratory and field studies appears necessary. If in the laboratory there is a tendency to consider simple systems which may not be readily relatable to the atmosphere, the object of field surveys, especially in urban regions, is so complex that the field studies rarely yield conclusive results. In view of this, the greatest importance should be attached to planning comprehensive complexes of identification measurements (combination of detailed direct analysis of aerosol samples with the scattering and transparency measurements, inclusion of the angular scanning techniques, polarization measurements, etc.).
|Organization:||American Petroleum Institute|
|Document Number:||api 4043|
|Most Recent Revision:||YES|