Upwelling Case Study – Exploring Surface Currents
Investigating Physical Ocean Conditions
Surface ocean current data
These graphs show wind speed and direction measured at the M1 and M2 moorings during winter. Winds drive the the direction of surface ocean currents, shown below for the winter months; these data are from land-based high frequency (“HF”) radar systems.
Arrows show current directions. At the M1 and M2 sites, are relationships between winds and surface currents consistent with what you’ve learned about the Coriolis effect?
(To see the data in motion, click the image at left. For other winter current animations, click links below.)
Given these surface current patterns, do you think that upwelling occurred during the winter months?
If so, hit “GO!” to see water temperature data:
If not, choose another season to investigate: