The Sulfur Cycle: Water Quality and Biogeochemistry

This lecture covers the sulfur cycle, focusing on the largest reservoirs of sulfur in the Earth's crust and oceans, the biotic and abiotic processes involved, key sulfur compounds and their redox states, biological sulfur cycle processes, sulfur fluxes in the atmosphere, the human impact on the sulfur cycle, the role of DMS in cloud formation, and the atmosphere as a source of sulfur. The instructor compares modern and ancient atmospheres to understand the global cycles' importance in Earth's life.