Characteristics of Black Carbon Aerosols and Their Changes in Wet Removal Processes over a Sub Urban Coastal Environment in India

Abstract

Aerosols are tiny particles in the form of solid or liquid phases present in the atmosphere. They are quite small in number in the atmosphere compared to other trace constituents. Aerosols play a crucial role in the earth atmospheric system by means of direct and indirect effects. Many studies focus on characterizing the BC aerosols across the world due to their increased contribution of radiative forcing in the earth s energy budget. The research in Black Carbon (BC) aerosols has attained a great importance. However, some of the characteristics of BC aerosols such as sea breeze effects on BC aerosols, fumigation of BC aerosols, and wet removal process of BC aerosols are not explored fully in Indian context. newlineIn the present study, we focused on the objectives with the sea breeze effect on BC aerosols using the measurements of weather data, BC aerosol mass concentration and Aerosol Optical Depth. Further, we focus on investigating the fumigation process for different seasons from the collocated measurements of BC mass concentration (using Aethalometer AE-31) and the height of Atmospheric Boundary Layer (ABL) (using Mini Micro Pulse Lidar). Furthermore, we study the BC and ABL relationships during wet removal processes of BC aerosols along with the theoretical and experimental scavenging ratios newline