Ocean Thermal Energy Conversion Water near the surface of tropical and subtropical seas is maintained by this solar radiation a higher temperatures than the water at greater depth or at higher latitudes Ocean Current The warm surface water From the equatorial regions either to the north or to the south Gulf Stream or Japanese Current 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan UniversityOcean Thermal Energy Conversion Water near the surface of tropical and subtropical seas is maintained by this solar radiation a higher temperatures than the water at greater depth or at higher latitudes. Ocean Current: The warm surface water From the equatorial regions either to the north or to the south. Gulf Stream or Japanese Current