Geophysical Fluid Dynamics (GFD) examines naturally occurring, large-scale flows on Earth and elsewhere, but mostly on Earth. This course generally encompasses the motions of both fluid phases: liquids (for example, waters in the oceans, molten rocks in the outer core) and gases (for example, air in the atmosphere, ionised gases or plasma at the surface of stars). In this respect, GFD comprises the large-scale motions of rotating-stratified fluid dynamics. The topics includes discussions on the physics principles of atmosphere and ocean dynamics, focusing upon the governing equations of fluid motion under consideration.