Organic aerosols are tiny particles suspended in the atmosphere that are composed of organic compounds such as hydrocarbons, oxygenated compounds, and nitrogen-containing compounds. These aerosols can be emitted directly into the atmosphere through sources like vehicle exhaust or industrial processes, or they can be formed through chemical reactions in the atmosphere. Organic aerosols play a significant role in a variety of atmospheric processes, including climate regulation, air quality, and cloud formation. They can directly absorb or scatter sunlight, affecting the Earth's radiation balance and climate. Additionally, organic aerosols can serve as cloud condensation nuclei, influencing cloud formation and properties. Research in the area of organic aerosols focuses on understanding their sources, chemical composition, transformation in the atmosphere, and their impacts on climate and air quality. This research is important for informing policies and strategies to mitigate the environmental and human health impacts of organic aerosols.