81756 - Physical Oceanography

Learning outcomes

The student will deeping of knowdledge of ocean dynamics solving the classical problems of the wind driven ocean circulation for the world open ocean areas with attention to quasigeostrophic vorticity dynamics. The student will learn planetary gravity and Rossby wave motions in details as well as understanding of the overturning climatic circulation of the oceans.

Course contents

1. Structure of the ocean general circulation and its variability

2. The forcing of the ocean circulation: wind, heat and water fluxes at the air-sea interface

3. Primitive equations for the oceans

4. Reynolds theory of turbulence, parameterizations of turbulence in the ocean

5. Classical viscous solutions and ‘law of the wall’ for momentum stress at the air-sea interface

6. Boundary conditions for the ocean primitive equations

7. The planetary turbulent boundary layer: the Ekman currents at the surface and bottom of the water column

8. Brief overview of Ekman dynamics and large scale upwelling/downwelling areas of the ocean (Eastern Boundary Upwelling, Equatorial upwelling, eddy upwelling)

9. Shallow water equations

10. Gravity wave solutions for the shallow water equations: inertial, Poincare’, Kelvin waves

11. Equatorial Kelvin waves, Rossby waves

12. Fundamentals of Baroclinic and barotropic instability processes and concepts

13. Fundamentals of energy and enstrophy cascading: oceanic vortices and quasigeostrophic turbulence

14: Sub-mesoscale dynamics

15: Instability and mixing

16. Global Ocean Overturning circulation

17. Deep and intermediate water convection in the ocean

18. Sea level change in present and future climate

Readings/Bibliography

Talley, L., D., G.L.Pickard, W.J. Emery and J.H. Swift, 2011. Descriptive Physical Oceanography: An Introduction. Academic Press, Elsevier, ISBN: 978-0-7506-4552-2

Cushman-Roisin, B., Introduction to Geophysical Fluid Dynamics, Academic Press

N.Pinardi,2022. Notes in Physical Oceanography

Teaching methods

All lectures and exercises are done in the classroom (all frontal lectures)

Assessment methods

The assessment will be carried out by an oral exam: the first topic will be chosen by the student, then the next two questions by the teacher. The exam normally will be 45 minutes long.

Teaching tools

The lectures are given at the blackboard and other material is distributed through the web site "Teaching material"

Links to further information

http://www.sincem.unibo.it/

Office hours

See the website of Nadia Pinardi