1. Gulf stream, recirculation, and other western boundary layer currents

2. 1. the Gulf Stream
2. the coriolis force ant the gyre
3.the western boundary current layer

3. The Gulf Stream powerful, warm, and swift Atlantic ocean current
originates in the Gulf of Mexico, follows the eastern coastlines of the United States, and exits through the Strait of Florida.

4. The Gulf Stream
Modifying influence of the climate of the east cost of north America.
extension toward Europe,(North Atlantic drift): Western Europe warmer.
For example, in January, the temperature difference between coastal Norway and northern parts of continental Canada is approximately 30 °C on average, even if they are the same latitude.

5. The Gulf Stream
Finally, the Gulf Stream is one of the strongest ocean currents known:
transporting 1.4 petawatts of power.
moves at a rate of 30 million cubic meters per second.
The volume of the Gulf Stream dwarfs all rivers that empty into the Atlantic combined, which barely total 1 million cubic meters per second.

6. The Coriolis force and the Gyre

7. Historically
Some early writers thought the mighty Mississippi River empties in the Gulf of Mexico, and from there become the Gulf Stream
Later, Benjamin Franklin understood that winds were the supreme current-producing power in the sea.
In the middle of the 19th century, Commander M.F Maury understood, that the currents do not invariably follow the winds, but run at right angles, or even against the wind

8. The Coriolis Force
Every moving object responds to the "Coriolis force."
In the northern hemisphere the Coriolis force always deflects objects to the right.
In the southern hemisphere the Coriolis force deflect objects to the left.

9. The Gyre
Trade winds set up a large-scale gyre motion of surface waters in each ocean basin, centered roughly on the tropics of Cancer and of Capricorn.
Because of the Coriolis force, surface water is deflected toward the interior of the gyres
if the wind should cease, the water will attempt to run downhill from the center of the gyre, and be deflected by the Coriolis force
The gyre keeps turning, while balancing the forces of gravity with those of the Coriolis force

10. Western boundary current layer
The Gulf Stream is just a portion of the circle of the North Atlantic Current
Why is it so strong compared to its symmetric towards Europe costs?.  

11. The asymmetry Coriolis: f=2*W*sin(theta) Define Beta:
3 attemps to explain: limit condition in PDEs
Sverdrup
Stommel
Munk

12. Sverdrup’s theory of the Oceanic Circulation

13. Stommel theory of Western boundary currents
He adds a botom stress proportional to velocity
Coriolis depending or not on latitude explains Gulf Stream

14. Munk’s solution
He adds lateral friction

15. Thanks, may I help you?