Introduction to Marine Chemistry: Ocean Cycles and Climate Change

The ocean plays a critical role in regulating our planet's climate and supporting life, yet its complex chemical systems are undergoing rapid changes. Understanding these chemical processes is essential for anyone interested in environmental science, oceanography, or climate action. This text-based course guides you through the fundamental principles of chemical oceanography. You will gain a clear understanding of how chemical elements enter, circulate within, and leave the marine environment, equipping you with the knowledge to analyze real-world environmental challenges. What you'll learn: Understand the fundamental composition of seawater and the concept of residence times; Analyze the biogeochemical cycles of carbon, nitrogen, phosphorus, oxygen, and sulfur; Examine how oceans absorb anthropogenic carbon dioxide and the mechanics of ocean acidification; Explore chemical exchanges between the ocean, atmosphere, rivers, and seafloor; Learn how modern marine scientists use chemical sensors and modeling to track oceanic changes. The course begins with foundational definitions and reservoir models before exploring specific chemical cycles and ocean-atmosphere interactions. You will progress from basic chemical principles to studying complex modern issues like carbon sequestration and climate feedback loops through written explanations and clear examples. This course is designed for beginners, environmental enthusiasts, and aspiring scientists, with no prior advanced chemistry background required. Start exploring the chemical wonders of our oceans today.