Meteorological Episodes of Slowest Dilution
Dr. Vennapu LakshmanaRao
Assistant Professor (C), Department of Meteorology & Oceanography, Andhra University, Visakhapatnam, India
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An episode of slowest dilution is defined as the continuous period during which no dispersion occurs and mainly depends on the flowing parameters. The aim of this study is the events of meteorological episodes and the atmospheric conditions resulting in slowest dilutions are important, especially over urban areas. In general the occurrence of fog, mist and haze near the coast is very common which an indicator of stagnant conditions is in general. The information may be utilized as a meteorological tool for proper guiding to both residents as well as industrialists. It is interesting and also worth mentioning here that the episode’s of the slowest dilutions were occurred on the month of March and June. The climatology of air flow reveals that the east- south – east in January, south – south – west in April, southwest in August, northwest in October are found in the most predominant wind directions. The highest wind speed is about 6m/s in normal conditions and found to be high in April and August.