Relative amounts of heat transfered
Air circulates more rapidly than sea water but water has a higher heat capacity
Circulation of sea water, where it is well developed, carries heat from one place to another more effectively than circulation of air
Between 0°& 30°N or S, sea water circulation is well-developed, & oceanic currents are responsible for the bulk of the pole-ward transfer of heat
At higher latitudes, sea water circulation is less well organized, & atmospheric circulation accomplishes more pole-ward heat transfer