Atmospheric retrieval is a research area within atmospheric science that focuses on the analysis and interpretation of remote sensing data to retrieve information about the composition, temperature, and other properties of Earth's atmosphere. This field involves developing algorithms and techniques to extract relevant atmospheric parameters from satellite or ground-based measurements, such as those obtained from spectrometers, radiometers, or lidar instruments. Atmospheric retrieval plays a crucial role in monitoring and understanding atmospheric processes, climate change, air quality, and weather forecasting.