ABSTRACT

The aerosol number concentration during morning, noon, and evening periods of the summer season has been analysed, and the daily variation of aerosol number concentration has been found related to some meteorological parameters such as relative humidity RH temperature, rainfall, and wind speed. The aerosol properties are also affected by metrological parameters and serve as a function of meteorological parameters such as temperature, RH, wind speed and direction, atmospheric pressure, rainfall, altitude, etc. The summer variation of atmospheric aerosol number concentration in different size bins for morning, noon, and evening periods, and their behaviour with some selected meteorological parameters, such as RH, temperature, rainfall, and wind speed have been studied. An analysis has been done for all the size ranges and the chosen observation period from April to July in the present study covers both pre-monsoon and monsoon activities. The fluctuation of aerosol number concentration depends on meteorological parameters.