Topic: oceans

The annual meeting brings together research on weather, climate, hydrology, oceans and related environmental systems. Its conferences and symposia cover atmospheric chemistry, climate variability, observing systems, satellite measurements, modelling and communication of scientific information. The 2027 theme emphasizes education and the use of Earth-system knowledge by people and communities. Scientific sessions, professional exchanges and short courses are offered alongside in-person and online participation.

This lecture introduces atmospheric aerosols from deserts, oceans, volcanoes, fires and human activities. It examines how these particles travel and are deposited far from their sources. Their climatic effects are discussed alongside the satellite and ground-based observing programmes used to measure them.