Date : 24-07-2019
Time : 00:00:00
Speaker : Dr. Sachin Gunthe
Venue : K.R. Ramanathan Auditorium, PRL


Atmospheric aerosols form because of various emissions from industry, human activities and natural processes. They interact with incoming solar radiation directly by scattering and absorption and indirectly by changing cloud properties. Also, the changes in cloud properties lead to change in precipitation and Hydrological cycle on the Earth. Overall, aerosols are expected to counteract global warming by greenhouse gases but aerosol-cloud interaction and many biosphere-geosphere processes involving aerosols are poorly understood and therefore, they are cause for the largest uncertainty in understanding current and future climate changes. Aerosols of biological origin (bacteria, fungal spore, pollen grains, plant and animal fragments, etc.) are one of the least understood component of the climate system. An overview of changing aerosol properties including bioaerosols over India and their role in cloud and precipitation formation processes on regional and local scale will be given.