The question does not ask about how far can the eye see on a curving surface. The asker stated 'a flat surface' Since when in mathematics do we mix up a flat surface with a curved surface. You have turned a very simple question in to a complicated question by introducing a curved plane.
As one would expect, the further you travel from the Equator, the colder the ocean waters generally become. Near the Equator, surface water temperatures can be as high as 80Â° Fahrenheit (27Â° Celsius). Near the poles, the temperature drops to a chilly 28Â° Fahrenheit (-2Â° Celsius). The western side of oceans are usually warmer than the eastern side. This is due to the way in which both the atmospheric and oceanic currents move water from the equator towards the poles on the western side of oceans, and from the poles towards the equator on the eastern side of oceans.
Sea surface temperatureâthe average temperature of water at the surface of the global oceanâis a key indicator of the ocean's staus. Because the ocean is constantly interacting with the atmosphere, changes in sea surface temperature can have profound effects on other aspects of Earth's climate.rom 2011-2012, as a weak La Nina niÃ±a transitioned to more neutral, conditions average sea surface temperature for the global ocean warmed by about.0 1Âº. celsius