Earth Science Basics: What Determines the Level of the Sea?

Fathoming the forces that determine global sea levels can be daunting. We present a guide to the basics of ocean surface topography.

Video credit: NASA/JPL-Caltech

[juanvan]

If you can cool the ocean will that not have a overall temp drop
And by cooling the hot water to
Ice caps
Could you not place massive cooling cylinders in the ocean cooled by liquid nitrogen
If you place these in hot water currents before they reach the caps