Multisite Scenarios of Black Carbon and Biomass Burning Aerosol Characteristics in India

Black Carbon (BC) aerosols are not only substantial climate-forcing drivers but also impact human health. The spatial distribution of BC depends on the combination anthropogenic activities and meteorological conditions. In this study, we used India Meteorological Department (IMD) Observational Network datasets to assess diurnal, seasonal, long-term trends for period, 2016–2021. majority IMD’s monitoring stations show an overall declining trend in mass concentration during study period India. Maximum concentrations observed post-monsoon winter seasons due stubble-burning activity lower values Atmospheric Boundary Layer Height (ABLH). Minimum at all monsoon season wet scavenging by rain. There is a clear decrease from months increase months. Regional emissions crop residue burning post-harvesting main contributing factor extremely high levels concentration. Low wind speed shallow mixed layer were found be reasons aerosol season. increasing Biomass Burning (BB) most except Thiruvananthapuram, where prominent decreasing noticed. present local parameters such as wind, temperature, rainfall investigated. results negative correlation with rainfall, relative humidity, speed, temperature ABL height. Both long-range transport each site responsible significant changes